ReportIssue 1 | 12 November 2018
This report takes into account the particular
instructions and requirements of our client.
It is not intended for and should not be relied
upon by any third party and no responsibility
is undertaken to any third party.
Job number
Arup
| Issue 1 | 12 November 2018 | Arup
\\GLOBAL\EUROPE\CORK\JOBS\263000\263904-00\4. INTERNAL\4-04
REPORTS\4-04-03 INFRASTRUCTURE\FORSHORE LICENCE APPLICATION\ISSUE
1\ORIEL WIND FARM FORESHORE LICENCE ISSUE 1.DOCX
Document Verification
Document title Foreshore Licence Application for Marine Survey File
reference
Document ref
Draft 1 24 Sept
Name Gillian Madden Marie Murphy Michael Daly
Signature
2018
Filename Oriel Wind Farm foreshore license Draft 2.docx Description
Second draft
Prepared by Checked by Approved by
Name Gillian Madden Marie Murphy Michael Daly
Signature
2018
Filename Oriel Wind Farm foreshore licence Draft 3.docx Description
First Issue
Prepared by Checked by Approved by
Name Gillian Madden Marie Murphy Michael Daly
Signature
Filename
Description
Name
Signature
Issue Document Verification with Document
Oriel Windfarm Ltd Oriel Wind Farm Foreshore Licence Application
for Marine Survey
| Issue 1 | 12 November 2018 | Arup
\\GLOBAL\EUROPE\CORK\JOBS\263000\263904-00\4. INTERNAL\4-04
REPORTS\4-04-03 INFRASTRUCTURE\FORSHORE LICENCE APPLICATION\ISSUE
1\ORIEL WIND FARM
FORESHORE LICENCE ISSUE 1.DOCX
1.2 Marine Surveys 1
2 Description of the Proposed Survey Works 4
2.1 Survey Vessels 4
2.2 Geophysical Survey 6
2.3 Geotechnical Survey 10
2.4 Ecological Survey 13
2.5 Metocean Survey 14
3 General Requirements 15
3.1 Quality Assurance 15
3.2 Operating permits 15
3.4 PSDP/PSCS 15
Appendices
Example Survey Equipment Data Sheets
Oriel Windfarm Ltd Oriel Wind Farm Foreshore Licence Application
for Marine Survey
| Issue 1 | 12 November 2018 | Arup
\\GLOBAL\EUROPE\CORK\JOBS\263000\263904-00\4. INTERNAL\4-04
REPORTS\4-04-03 INFRASTRUCTURE\FORSHORE LICENCE APPLICATION\ISSUE
1\ORIEL WIND FARM
FORESHORE LICENCE ISSUE 1.DOCX
1.1 Project Background and Description
Oriel Windfarm Limited (Oriel) is an Irish renewable energy company
that has
been developing the proposed Oriel Wind Farm, which is located
offshore in the
North West Irish Sea, 22km off the coast of Dundalk, County Louth.
The
development will include an offshore substation and interlinking
cabling between
the turbines and the substation and between the substation to the
shore.
Oriel was granted a Foreshore Licence in October 2005 from the then
DCMNR,
giving permission to carry out a technical work plan to investigate
the suitability
of an area to the East of Dundalk Bay for the construction of an
offshore wind
farm. This included geotechnical site investigation, an engineering
assessment and
the completion of an Environmental Impact Statement (EIS), and
Natura Impact
Statement (NIS).
Following the completion of this work, Oriel applied for a
Foreshore Lease in
February 2007, for permission to construct an offshore wind farm of
up to
330MW potential within the surveyed area. This application is
pending. For a
number of reasons, the development of the project was delayed,
however, recent
policy announcements the project has been reignited. Oriel has
introduced
Parkwind NV as a strategic shareholder.
Oriel now need to initiate a set of surveys (both onshore and
offshore) to update
and complete the planning application and the environmental
assessments
previously undertaken.
This document forms part of a Foreshore Licence Application to the
Department
of Housing, Planning and Local Government seeking permission to
undertake
marine survey works within the proposed development site to support
the Oriel
Wind Farm project. These surveys will include the acquisition of
updated baseline
environmental data and updated seabed assessments, to establish the
optimum
design parameters for the wind farm and to enable the preparation
of an updated
Environmental Impact Assessment Report and Natura Impact
Assessment. The
scope and methodology of the works are described in this
document.
1.2 Marine Surveys
Oriel intend to carry out geophysical, geotechnical, ecological and
metocean
marine surveys of the proposed development area. The objective of
these site
investigation works is to build upon information gathered in
previous surveys by:
• Confirming the geological/geophysical model of the site,
• Determining the vertical and lateral variation in seabed
conditions,
• Providing the relevant geotechnical data for the design of the
offshore wind
farm, including description and index classification, strength
parameters,
deformation parameters, permeability and in-situ stress
conditions.
Oriel Windfarm Ltd Oriel Wind Farm Foreshore Licence Application
for Marine Survey
| Issue 1 | 12 November 2018 | Arup
\\GLOBAL\EUROPE\CORK\JOBS\263000\263904-00\4. INTERNAL\4-04
REPORTS\4-04-03 INFRASTRUCTURE\FORSHORE LICENCE APPLICATION\ISSUE
1\ORIEL WIND FARM
FORESHORE LICENCE ISSUE 1.DOCX
• Providing a detailed geological model of the site.
1.3 Schedule
It is anticipated that the survey works will commence in early 2019
subject to
approval of the Foreshore Licence Application, appointment of a
suitable
contractor, availability of vessels and suitable weather
conditions. In order to
allow for unforeseen delays we seek approval of a Foreshore Licence
for a period
until 31 December 2019.
Table 1 outlines the approximate durations for the survey works
required.
Table 1: Schedule of survey works.
Survey Time Conditions
Geotechnical Survey 1 month
Weather dependent; may be
existing data collected from
previous surveys
In parallel with the Geotechnical and Geophysical survey works,
ongoing Benthic
and Marine Mammal surveys will be undertaken.
1.4 Foreshore Application Area
This Foreshore Licence Application is for the survey area between
the Lowest
Astronomical Tide (LAT) and the 12-nautical mile limit. The survey
area includes
the proposed windfarm site and a proposed cable route corridor and
is
approximately 52.29km2. The cable route corridor extends from the
edge of the
windfarm site to the landfall location at Dunany Point, remaining
1km outside the
Dundalk Bay SPA. The coordinates of the survey area (to WGS 1984
and ITM)
are provided in Table 2. The extents of the survey area within the
foreshore limit
can be found in Figure 1. Further details of the application area
are shown on
drawings FL001 - FL006 which are included in this application
package.
Oriel Windfarm Ltd Oriel Wind Farm Foreshore Licence Application
for Marine Survey
| Issue 1 | 12 November 2018 | Arup
\\GLOBAL\EUROPE\CORK\JOBS\263000\263904-00\4. INTERNAL\4-04
REPORTS\4-04-03 INFRASTRUCTURE\FORSHORE LICENCE APPLICATION\ISSUE
1\ORIEL WIND FARM
FORESHORE LICENCE ISSUE 1.DOCX
Point
1 53°51'43.30" N 06°13'22.49" W 716891.98 791750.41
2 53°53'16.71'' N 06°05'25.07'' W 725536.54 794863.98
3 53°53'13.02'' N 06°02’54.22'' W 728293.88 794824.93
4 53°55'13.29'' N 06°01’38.52'' W 729572.58 798580.30
5 53°56'47.91'' N 06°02’28.34'' W 728582.84 801479.47
6 53°56'52.39'' N 06°05’32.27'' W 725225.64 801526.42
7 53°55'20.15'' N 06°06’30.24'' W 724244.85 798647.22
8 53°52’39.84'' N 06°13’15.36'' W 716978.47 793501.08
Figure 1: Extent of Survey Area within the Foreshore
Oriel Windfarm Ltd Oriel Wind Farm Foreshore Licence Application
for Marine Survey
| Issue 1 | 12 November 2018 | Arup
\\GLOBAL\EUROPE\CORK\JOBS\263000\263904-00\4. INTERNAL\4-04
REPORTS\4-04-03 INFRASTRUCTURE\FORSHORE LICENCE APPLICATION\ISSUE
1\ORIEL WIND FARM
FORESHORE LICENCE ISSUE 1.DOCX
2.1 Survey Vessels
The marine survey works will be carried out by a dedicated marine
spread,
suitable for the scope of work required, the water depth and the
anticipated
conditions of the survey area and the transit routes. The exact
equipment to be
used will be confirmed following a tender process to procure the
site investigation
contractor.
It is anticipated that two survey vessels will be required to
complete the works:
• A larger vessel suitable for offshore site investigation;
• A smaller vessel suitable for nearshore site investigation (in
more shallow
waters).
These vessels will be comparable to those typically used in the
industry for
carrying out similar technical work and will possess all relevant
classification
certificates.
The vessels will conform to the following minimum requirements as
appropriate:
1. Station-keeping and sea keeping capabilities required by the
specified work
at the proposed time of year; the appointed contractor may
provide
supplemental tug assistance if such assistance benefits the
operation;
2. Endurance (e.g. fuel, water, stores, etc.) to undertake the
required survey
works;
3. Staffing to allow all planned work to be carried out as a
continuous
operation (on a 24 hour per day basis for the offshore activities
and on a 12
hour per day basis for the inshore activities);
4. Equipment and spares with necessary tools for all specified
works;
5. Appropriate accommodation and messing facilities on board;
6. Adequate soil laboratory testing facility.
The vessels used for the surveys will be sound and capable of
remaining safely at
sea for a minimum of thirty (30) days under weather conditions
typically
encountered in the marine survey area at the time of year that the
operations are to
take place. The appointed contractor will be responsible for all
shipboard systems
and equipment calibration and re-calibration, including spares. For
every 30 days
of operations the vessels will accrue one day of maintenance
time.
Vessels shall have breadth and draft of suitable proportions to
provide adequate
stability for the duration of the intended operation. The vessels
shall be capable of
passage speeds in excess of ten (10) knots and extended survey
operations at
speeds less than two (2) knots.
In addition to AIS-A and Active Radar Enhancing Systems, the vessel
shall have
the following communications equipment as a minimum:
Oriel Windfarm Ltd Oriel Wind Farm Foreshore Licence Application
for Marine Survey
| Issue 1 | 12 November 2018 | Arup
\\GLOBAL\EUROPE\CORK\JOBS\263000\263904-00\4. INTERNAL\4-04
REPORTS\4-04-03 INFRASTRUCTURE\FORSHORE LICENCE APPLICATION\ISSUE
1\ORIEL WIND FARM
FORESHORE LICENCE ISSUE 1.DOCX
Page 5
• Multi-channel VHF and HF radio capable of working at all marine
frequencies
and with a dual watch facility
• Mobile phone
• Hand-held radios
• Frame and winch for the deployment of equipment and sensors,
sized for the
required equipment/sensors loads and pulling force. The winch speed
and size
must be compatible with planned surveys.
• Gyrocompass
• SATCOM facilities (phone/fax and e-mail)
• 2 independent DGPS systems, a primary and secondary system (DGPS
has a
greater degree of accuracy than GPS)
All survey vessels and marine support vessels will conform to the
relevant ISO
and API technical specifications for drilling equipment and will
maintain valid
class with the recognised Classification Society.
2.1.1 Offshore Vessel
The survey vessel used for offshore works will be either a jack-up
barge or a
Dynamic positioning (DP) vessel.
Jack-up barges utilise a fixed anchoring system in order to
maintain the required
position within the site. The vessel consists of a self-elevating
platform and
several “legs”, that are deployed to the ocean floor mooring the
vessel in place.
The survey works are carried out from the self-elevating platform,
which is raised
above the water’s surface. If used, the jack-up barge will meet
with the following
minimum requirements:
• The vessel will have at least four mooring points
• The self-elevating platform must be permanently manned (i.e.
off-shift
personnel to stay onboard even if the accommodation is not a
permanent
equipment of the jack-up);
• The platform must be provided with a class certificate verifying
the provision
of adequate safety equipment for the type of vessel and the number
of on-
board personnel;
• The platform should be certified in compliance with the MODU Code
and the
BWEA guideline;
Unlike jack-up barges, DP vessels maintain station via inputs from
satellite DGPS
signals, allowing the vessels to be positioned over any point on
the seabed and
maintain position without employing a fixed anchoring system. Using
thrusters or
propellers, a DP vessel can maintain position within a 2m to 0.5m
window
depending on the sea state/weather conditions and available power.
The vessel
may also transit under DP control along a given pre-determined
path.
If used, a DP vessel will meet the following minimum
requirements:
Oriel Windfarm Ltd Oriel Wind Farm Foreshore Licence Application
for Marine Survey
| Issue 1 | 12 November 2018 | Arup
\\GLOBAL\EUROPE\CORK\JOBS\263000\263904-00\4. INTERNAL\4-04
REPORTS\4-04-03 INFRASTRUCTURE\FORSHORE LICENCE APPLICATION\ISSUE
1\ORIEL WIND FARM
FORESHORE LICENCE ISSUE 1.DOCX
Page 6
• The vessel must be fully equipped with a Class II DP system as a
minimum
• Two DP certified operators with the necessary experience must be
members of
the crew
The offshore works will be carried out on a 24-hour shift basis,
with personnel
working two 12-hour shifts. This will allow the works to be
continuous.
2.1.2 Nearshore Vessel
The smaller, nearshore vessel will be used in locations where the
water depth is
too shallow for the larger, offshore vessel to carry out the works.
This vessel does
not need to have a dynamic positioning system, however must have
full DGPS
capability. The vessel is usually held on station by joy-stick
control and will
deploy an anchor to assist in maintaining station (depending on sea
state and
weather conditions). The smaller vessel will use similar equipment
to the larger
vessel to carry out the required survey works.
The nearshore works will be carried out on a 12 hour per day basis,
with the
vessel returning to port at the end of each day.
2.1.3 Survey Navigation
All navigation equipment and instrumentation will be calibrated and
used
correctly. Calibration and/or verification shall be repeated in the
event of any
equipment malfunction, which may nullify earlier calibrations
and/or
verifications.
Qualified surveyors will be used to operate the navigation and
positioning
equipment continuously throughout the survey while maintaining a
continuous log
of all navigation activities throughout the survey.
Sufficient survey and positioning spares and consumables will be
provided to
enable the survey to be completed without any degradation of
navigation and
positioning quality and effectiveness and without the need to
return to port to
acquire additional equipment.
2.2 Geophysical Survey
2.2.1 Scope of Work
The purpose of the geophysical survey is to determine the sediment
conditions
within the survey area in order to update the information gathered
in previous
survey works. This additional data will be used to better
understand the sub-
surface structure, in particular the sub-surface stratigraphy, and
to confirm the
bedrock elevation.
• Produce detailed bathymetric mapping;
• Obtain detailed seabed morphology;
Oriel Windfarm Ltd Oriel Wind Farm Foreshore Licence Application
for Marine Survey
| Issue 1 | 12 November 2018 | Arup
\\GLOBAL\EUROPE\CORK\JOBS\263000\263904-00\4. INTERNAL\4-04
REPORTS\4-04-03 INFRASTRUCTURE\FORSHORE LICENCE APPLICATION\ISSUE
1\ORIEL WIND FARM
FORESHORE LICENCE ISSUE 1.DOCX
• Identify the nature of the seabed;
• Acquire both shallow and deep geological cross-sections of the
wind farm site;
• Confirm the export cable route within the cable route
corridor.
The geophysical survey will include bathymetric, side scan sonar,
magnetometry
and seismic sounding of the proposed site, as shown in
Figure 1. Details of the exact survey equipment shall be made
available prior to
commencement of the works; however, it is envisaged that the
geophysical data
acquisition will involve the following acoustic-based
techniques:
• Multibeam Echosounder (MBES) system for detailed bathymetric
mapping;
• Side Scan Sonar for detailed seabed morphology and seafloor
mapping;
Magnetometer for detecting geomorphological anomalies and
ferrous
obstructions;
• Sub-bottom Profiling (SBP), both single and multi-sourcings, to
identify and
characterise the layers of sediment/rock underneath the seafloor
along the
cable route corridor.
characterise the layers of sediment/rock underneath the seafloor
within the
windfarm site.
The Contractor appointed will be responsible for performing
transects with a total
length of circa 84km and a distance of 1km between each transect.
The seismic
source shall detect the geological strata to a depth of 40m bsb
min. The transects
will be located within the survey area shown in Figure 1
above.
Oriel Windfarm Ltd Oriel Wind Farm Foreshore Licence Application
for Marine Survey
| Issue 1 | 12 November 2018 | Arup
\\GLOBAL\EUROPE\CORK\JOBS\263000\263904-00\4. INTERNAL\4-04
REPORTS\4-04-03 INFRASTRUCTURE\FORSHORE LICENCE APPLICATION\ISSUE
1\ORIEL WIND FARM
FORESHORE LICENCE ISSUE 1.DOCX
2.2.1.1 Multibeam Echosounder (MBES)
The MBES system will be used to provide detailed bathymetric
mapping
throughout the survey area. An MBES is a type of sonar (acoustic
surveying) used
in seabed mapping wherein acoustic waves are used to indicate
depth-to-seabed.
The device is typically affixed to a vessel’s hull or towed in its
wake. The process
is non-intrusive, and the device will not make contact with the
seabed at any
point. The Kongsberg EM710 may be taken as an indicative example of
a MBES
system to be used in the completion of these works and datasheet
for the
Kongsberg EM710 is included in Appendix B. The equipment will
operate within
a frequency range of 300-500kHz with sound pressure levels in the
range of 200-
228dB re1µPa at 1 metre range.
2.2.1.2 Side Scan Sonar
The side scan sonar will be used to achieve detailed seabed
morphology and
seafloor mapping of the survey area. The survey is carried out
using a sonar
device attached to a vessel that emits fan-shaped pulse down
towards the sea floor
across a wide-angle perpendicular to the path of the sensor through
the water. The
intensity of the acoustic reflections from the seafloor of this fan
shaped beam is
recorded in a series of cross-track slices.
When stitched together along the direction of motion, these slices
form an image
of the sea bottom within the swath (coverage width) of the beam.
The equipment
will operate within a frequency range of 100-500kHZ with source
levels at 235dB
re 1µPa at 1 metre range.
2.2.1.3 Magnetometer
A magnetometer detects ferrous objects and as such is used to
locate and identify
ferrous objects on or buried in the seabed within the range of the
magnetometer.
The device precisely measures the earth’s magnetic field and
detects any
anomalies, which represent ferrous objects such as lost anchors,
sunken ships and
buried piped. The magnetometer is typically towed behind a survey
vessel or
affixed to a vessel’s hull. The process is non-intrusive, and the
device will not
make any physical contact with the seabed at any point. The G-882
Marine
Magnetometer may be taken as an indicative example and datasheet
for this
device in included in Appendix B.
2.2.1.4 Sub-Bottom Profiler (SBP)
The SBP will be used along the cable route corridor only. This
device uses
reflection seismology to give a 2D image of the sub-seabed geology.
It is typically
towed behind the vessel during survey works or affixed to the
vessel’s hull. The
process is non-intrusive, and the device will not make any physical
contact with
the seabed at any point. The Innomar SES-2000 Quattro Parametric
SubBottom
Profiler may be taken as an indicative example and the datasheet
for this device is
included in Appendix B. The shallow sub-bottom profiler system will
be used
within the cable route corridor and will have the following general
specifications:
Oriel Windfarm Ltd Oriel Wind Farm Foreshore Licence Application
for Marine Survey
| Issue 1 | 12 November 2018 | Arup
\\GLOBAL\EUROPE\CORK\JOBS\263000\263904-00\4. INTERNAL\4-04
REPORTS\4-04-03 INFRASTRUCTURE\FORSHORE LICENCE APPLICATION\ISSUE
1\ORIEL WIND FARM
FORESHORE LICENCE ISSUE 1.DOCX
• A vertical resolution better than 0.2 metres
• Penetration of 5 metres
The profiler will be supplied with the following recorders and
peripheral
processing equipment:
2.2.1.5 Ultra-high-resolution multi-channel seismic (UHRS)
The UHRS will be used within the windfarm site only, commonly used
variants of
this technology are known as Sparkers and Boomers. It will have the
following
characteristics as a minimum:
• broadband width in excess of 2.5kHz at -10db,
• vertical resolution better than 0.5 metres,
• penetration 50 metres,
• record length suitable for the maximum depth required
(250ms),
• sampling rate 0.25ms.
A multi-channel hydrophone streamer shall be supplied. The streamer
should be
neutrally buoyant or controlled, well maintained and free of air
bubbles. The
hydrophone should have a response appropriate to the source used
but should
generally have a flat response between 500Hz and 10kHz. The
streamer should
have at least 16 channels and be 50m long.
Tail buoy with a radar reflector shall be used. A means of
detecting the feather
angle shall be available and recorded at regular intervals along
the line. Feather
angles for a streamer of this length (120m) will not exceed 8
degrees. Should the
vessel configuration dictate that the use of a trail buoy is not a
suitable option,
compass birds shall be used instead or in addition.
The cable shall have no more than 2 dead channels – these shall not
be
consecutive or within the first 5 channels of the streamer.
The UHRS should, as a minimum, be supplied with the following
record and
processing facilities:
• Online QC stack
Oriel Windfarm Ltd Oriel Wind Farm Foreshore Licence Application
for Marine Survey
| Issue 1 | 12 November 2018 | Arup
\\GLOBAL\EUROPE\CORK\JOBS\263000\263904-00\4. INTERNAL\4-04
REPORTS\4-04-03 INFRASTRUCTURE\FORSHORE LICENCE APPLICATION\ISSUE
1\ORIEL WIND FARM
FORESHORE LICENCE ISSUE 1.DOCX
2.3 Geotechnical Survey
2.3.1 Scope of Work
The purpose of the geotechnical survey is to provide relevant
information about
the soil to a depth below which possible existence of weak
formations will not
influence the safety or performance of the wind turbine and its
support structure.
The geotechnical survey will include up to 10 geotechnical
boreholes within the
proposed windfarm site and 13 cores within the cable route
corridor.
Figure 2 below shows the locations where these works will take
place. Drawing
number FL005 provides a more detailed overview of the geotechnical
works.
Oriel Windfarm Ltd Oriel Wind Farm Foreshore Licence Application
for Marine Survey
| Issue 1 | 12 November 2018 | Arup
\\GLOBAL\EUROPE\CORK\JOBS\263000\263904-00\4. INTERNAL\4-04
REPORTS\4-04-03 INFRASTRUCTURE\FORSHORE LICENCE APPLICATION\ISSUE
1\ORIEL WIND FARM
FORESHORE LICENCE ISSUE 1.DOCX
2.3.2 Boreholes
Ten geotechnical boreholes will be drilled at pre-defined locations
within the site
to a nominal target depth of 40m below the seabed.
Oriel Windfarm Ltd Oriel Wind Farm Foreshore Licence Application
for Marine Survey
| Issue 1 | 12 November 2018 | Arup
\\GLOBAL\EUROPE\CORK\JOBS\263000\263904-00\4. INTERNAL\4-04
REPORTS\4-04-03 INFRASTRUCTURE\FORSHORE LICENCE APPLICATION\ISSUE
1\ORIEL WIND FARM
FORESHORE LICENCE ISSUE 1.DOCX
Page 12
Figure 2 and drawing number FL005 show the locations of the
boreholes within
the windfarm site.
The equipment used to drill the boreholes will follow the ISO and
API technical
specifications for drilling equipment and at a minimum will
have:
• A heave motion compensator system on board (seabed frame and/or
drill
string) with a minimum heave compensation of 1.5m;
• Capability of mud production to different densities (when mud
production is
required for the works). The mud shall be water or bio-degradable
organic
polymer;
The boring log, a detailed description of the soil types, and the
in situ geotechnical
properties determined for the boreholes will be documented to
characterise the
strata.
Coring and sampling shall be done in general accordance with EN
ISO22475-1.
Rotary coring equipment, such as Geobor-S is expected to be
utilised.
In situ testing shall include the option of either down-hole
wireline piezocone
penetration testing (PCPT) associated to PS logging or down-hole
wireline
seismic cone testing (SCPT) over full length of borehole.
Alternate sampling and PCPT/SCPT shall be carried out throughout
the whole
borehole depth.
The boreholes are to be advanced by alternating PCPT/SCPT and
push/core
sampling; requirements will depend on the material type
encountered. Within a
granular deposit, the boreholes are to be advanced by alternating
PCPT/SCPT and
push sample. Where the sample recovery is poor using the push
sampler, a
hammer sampler shall be used instead. Blow counts measured during
hammer
sampling shall be recorded and presented on the Borehole Logs.
Within the
cohesive deposits, the boreholes are to be advanced by PCPT/SCPT
followed by
two push samples (repeat cycle). Rotary coring may be used instead
of push
sampling in suitable materials, in which case the CPT and cores
shall be
alternated.
The samples/cores shall be recovered in liners or in Shelby tubes
for all soil types
and the appropriate technique should be selected to minimise soil
disturbance and
maximize recovery.
SCPT tests shall be executed at a minimum of four of the locations,
which will be
confirmed following the results of the geophysical survey. Two
seismic
measurements shall be carried out during each SCPT stroke at a
depth interval of
1m; the envisaged volume is 40-60 SCPT tests in total.
2.3.3 Vibrocoring/Gravity Coring
The appointed contractor will be required to carry out 13
vibrocores/gravity cores
within the export cable route corridor as shown in Figure 2. The
cores will be
carried out along the line of the cable route which is still to be
defined. Drawing
number FL005 shows an indicative line for the cores.
Oriel Windfarm Ltd Oriel Wind Farm Foreshore Licence Application
for Marine Survey
| Issue 1 | 12 November 2018 | Arup
\\GLOBAL\EUROPE\CORK\JOBS\263000\263904-00\4. INTERNAL\4-04
REPORTS\4-04-03 INFRASTRUCTURE\FORSHORE LICENCE APPLICATION\ISSUE
1\ORIEL WIND FARM
FORESHORE LICENCE ISSUE 1.DOCX
Page 13
Vibrocoring is performed where cohesionless soil is expected. The
rig will be
fitted with a PVC liner, core catcher and cutting shoe. The
vibrocorer is lowered
onto the seabed, position and depth are noted, after which the
vibrocoring process
is started. Upon refusal or at target depth, the stop condition is
recorded and the
vibrocorer is recovered on deck where the recovery rate is
measured. If required, a
core catcher can be used to prevent the sample dropping out of the
PVC liner.
A cap must be fitted to the bottom end of the core and affixed with
electrical tape.
The core is cut into approximate 1 metre length sections from top
and capped as
well. All caps will be sealed with tape. All cores are examined and
tested offshore
before any sealing of the sample. Soil found in the vibrocoring
shoe is stored in a
bag.
Gravity core (wireline self-weight penetration sampler) is
performed where
cohesive soil is expected. The rig is equipped with a PVC liner.
The gravity corer
is lowered on the seabed and penetrates in the seabed under its own
weight. Upon
refusal or at target depth, the gravity core is recovered on deck
where the recovery
rate is measured.
A cap must be fitted to the bottom end of the core and affixed with
electrical tape.
The core is cut into approximate 1 metre length sections from top
and capped as
well. All caps will be sealed with tape. All cores are examined and
tested offshore
before any sealing of samples.
2.4 Ecological Survey
2.4.1 Scope of Work
The purpose of the ecological survey is to update the baseline
environmental data
collected from previous ecological surveys. This data will
primarily be used to
inform the environmental impact assessment (EIA), by describing
the
environmental conditions within the site, and subsequently
developing appropriate
mitigation measures for any potential environmental impacts. The
ecological
scope of work will include a marine mammal survey and a benthic
survey.
The marine mammal survey will be undertaken by the on-board Marine
Mammal
Observer. Three to four CPOD’s may also be installed for the
purpose of acoustic
monitoring on marine mammal activity within the wind farm area.
This will be
supplemented by the vessel-based sighting surveys.
The benthic survey will be used for the collection of sediment
sample for analysis
for benthic infauna, particle size, total organic carbon and
anthropogenic
contaminants. Benthic ecological assessments will be carried out
using drop down
cameras and grab samples. It is estimated that 10 Benthic stations
will be
examined for fauna and sediment. One grab will be taken to collect
data on the
fauna and a second to obtain a sample for sediment analysis. Grab
samples are
similar to grab buckets on land and tend to be either hydraulically
or manually
operated. There are many different tools used to recover samples;
the method used
will depend on the water depth, currents and sample size required.
Typical tools
include a Van Veen type grab sampler.
Oriel Windfarm Ltd Oriel Wind Farm Foreshore Licence Application
for Marine Survey
| Issue 1 | 12 November 2018 | Arup
\\GLOBAL\EUROPE\CORK\JOBS\263000\263904-00\4. INTERNAL\4-04
REPORTS\4-04-03 INFRASTRUCTURE\FORSHORE LICENCE APPLICATION\ISSUE
1\ORIEL WIND FARM
FORESHORE LICENCE ISSUE 1.DOCX
2.5.1 Scope of Work
The purpose of the metocean survey is to obtain site specific
atmospheric, wave
and wind data at the 10m and 120m water levels over a minimum
period of 12
months. All metocean survey works will occur at one location within
the marine
survey area which will be determined following the appointment of a
suitable
contractor.
The data will be collected via a floating weather station, which
will include a
wave rider and a wind measurement LiDAR current profiler. The wave
rider will
be used to collect wave height and current data across the site,
while the LiDAR
system will be used to measure the wind characteristics within the
site.
Oriel Windfarm Ltd Oriel Wind Farm Foreshore Licence Application
for Marine Survey
| Issue 1 | 12 November 2018 | Arup
\\GLOBAL\EUROPE\CORK\JOBS\263000\263904-00\4. INTERNAL\4-04
REPORTS\4-04-03 INFRASTRUCTURE\FORSHORE LICENCE APPLICATION\ISSUE
1\ORIEL WIND FARM
FORESHORE LICENCE ISSUE 1.DOCX
• Operate Quality and Environmental Management Systems based on
and
conforming to ISO9001:2008.
• Provide a Quality Management Plan for all the marine
operations.
• Provide operational procedures for all the marine
operations.
3.2 Operating permits
The marine survey Contractor shall obtain and comply with all
necessary marine
operational permits including routine and customary
vessel/crew/equipment
clearances from Customs Agencies, Port Authorities, Marine Survey
Office, etc.
3.3 Health and Safety
Health, Safety and Environmental protection shall be given
foremost
consideration in the execution of the work and shall be promoted in
a proactive
and highly visible manner throughout the workforce. The marine
survey
Contractor shall operate International Safety Management (ISM) and
Health
Environmental and Safety (HES) systems based on legislation
relevant to the
proposed activities. The marine survey Contractor shall have an
overall Health,
Safety, Security and Environmental (HSSE) plan for each stage of
all marine
operations. The plan shall cover all parties and operations.
Parkwind’s Health and Safety Protocols will be followed by both
survey and
ship's crew. Care will be taken to maintain contact with fishing
vessels operating
within the area of operations. The contractor will ensure
notifications of the
intended work and time lines are posted in the relevant press well
ahead of
schedule and a fisheries liaison officer will be employed.
All vessels shall operate under a certificated Safety Management
System (SMS)
that provides policies, procedures, and a framework for continuous
improvement
to ensure the safety of personnel on-board.
3.4 PSDP/PSCS
The appointed contractor will designate a competent PSDP and PSCS
under the
relevant legislation. Method Statements and Risk Assessments will
be submitted
to the Foreshore Unit following the appointment of a suitable
contractor and prior
to commencement of the Survey Works.
Oriel Windfarm Ltd Oriel Wind Farm Foreshore Licence Application
for Marine Survey
| Issue 1 | 12 November 2018 | Arup
\\GLOBAL\EUROPE\CORK\JOBS\263000\263904-00\4. INTERNAL\4-04
REPORTS\4-04-03 INFRASTRUCTURE\FORSHORE LICENCE APPLICATION\ISSUE
1\ORIEL WIND FARM
FORESHORE LICENCE ISSUE 1.DOCX
3.5 Environmental Protocols
Environmental factors will be taken into account in all decisions
during the survey
campaign. Environmental efforts should be preventative rather than
remedial;
where required as a condition of permitting, the Contractor shall
form and comply
with the obligations of an appropriate Environmental Management
Plan.
All vessels shall comply with the latest International Maritime
Organization
(IMO) and Safety of Life at Sea (SOLAS) and environmental
requirements for
their classification and with any national requirement of the
territorial or
continental / EEZ waters to be operated in. All vessels will follow
Parkwind’s
Vessel Management System.
The appointed contractor will take particular care when handling or
storing
hazardous materials, radiation sources and chemicals. All storage
and handling
must be carried out in accordance to accepted guidelines;
appropriate safety
precautions must be taken, and safety clothing must be worn as
necessary. Liquid
or non-liquid pollutants or waste material will not be dumped,
thrown or
otherwise disposed of into the sea. All refuse and materials shall
be kept onboard
the vessel and safely disposed of onshore according to the MARPOL
convention.
All substances handled and/or used whilst undertaking the works
will be handled,
used, stored and documented in accordance with assessments
and
recommendations of the Control of Substances Hazardous to Health
(COSHH)
Regulations 1994. Where Fuels, Oils and Lubes are required to
bestowed on
boats, suitable containers will be used and stowed to allow
ventilation and safe
dissipation of any accidental leaked gas and retention of any
leaked liquid. No
liquid will be discharged into the water at any stage of the work
on site. No
smoking will be permitted in the vicinity of fuel in storage or
when in use.
All survey works that involve the use of acoustic instrumentation
will follow the
Guidance to Manage the Risk to Marine Mammals from Man-made
Sound
Sources in Irish Waters, 2014. Measures to be implemented include
but are not
limited to:
• A qualified and experienced marine mammal observer (MMO) shall
be
appointed to monitor for marine mammals and to log all relevant
events using
standardised data forms
• Pre-start monitoring: If marine mammal species are detected
within 500m
distance of the sound source, seismic survey shall not
commence.
• Periods of peak sensitivity to survey operations for marine
mammals will be
avoided where possible.
• Ramp-up Procedures will be used - a controlled build-up of
acoustic energy
output shall occur in consistent stages to provide a steady and
gradual increase
over the ramp-up period.
Archaeological survey works will be carried out under licence from
the National
Monuments Service (NMS) which will be obtained in advance of the
survey. All
geophysical survey shall be undertaken to the specifications and
resolutions that
allow for the identification of underwater cultural heritage.
Oriel Windfarm Ltd Oriel Wind Farm Foreshore Licence Application
for Marine Survey
| Issue 1 | 12 November 2018 | Arup
\\GLOBAL\EUROPE\CORK\JOBS\263000\263904-00\4. INTERNAL\4-04
REPORTS\4-04-03 INFRASTRUCTURE\FORSHORE LICENCE APPLICATION\ISSUE
1\ORIEL WIND FARM
FORESHORE LICENCE ISSUE 1.DOCX
3.6 Access and Egress Arrangements
There will be no access to the foreshore from the landward side.
All works will be
carried out from a vessel. The offshore survey vessel may mobilise
directly to site
from its base or from a suitable facility such as Dublin
Port.
Oriel Windfarm Ltd Oriel Wind Farm Foreshore Licence Application
for Marine Survey
| Issue 1 | 12 November 2018 | Arup
\\GLOBAL\EUROPE\CORK\JOBS\263000\263904-00\4. INTERNAL\4-04
REPORTS\4-04-03 INFRASTRUCTURE\FORSHORE LICENCE APPLICATION\ISSUE
1\ORIEL WIND FARM
FORESHORE LICENCE ISSUE 1.DOCX
Oriel undertook an extensive public consultation campaign during
the original
Lease application process for the project in 2006 and 2007, to
ensure that all
members of the public and the many interested and relevant bodies
were kept
fully informed of its proposals. The following actions were
undertaken:
1. Statutory consultation was undertaken with a list of key
stakeholders as part
of the EIA scoping process and during the formal assessment phase
after an
EIA was submitted.
2. Over 360 consultees including statutory bodies, local and
national
community groups and individuals were contacted during the original
EIA
preparation process, with follow up meetings held with 90 of
these.
3. A public information office was also in the Renewable Energy
Centre at
Dundalk Institute of Technology throughout the EIA preparation
and
decision phase.
4. During the 2-month public consultation phase following the
submission of
the EIA all application documents were made available at Garda
stations,
council offices and Libraries around the coast from Newcastle Co.
Down to
Drogheda Co. Louth. The EIS was also made available for download on
the
project website.
Oriel propose to roll out an extensive stakeholder identification
and consultation
plan linked to the stages of the consent process. This will include
formal
consultation to comply with legislative requirements and additional
engagement
with stakeholder groups. Oriel’s intention is to ensure that all
members of the
public and the many interest groups and relevant bodies are kept
fully informed
and engaged during the project assessment and consents
processes.
Local groups and associations will be contacted during each phase
of the project
consent process to provide information on the latest project
developments and to
allow for opportunities to participate in the consent process and
provide feedback
on relevant issues of concern. Meetings will be arranged with these
groups on
request. A series of public open days will be scheduled at
locations around the
coast to coincide with key project milestones.
Oriel undertook extensive consultation with CRU and the Louth
County Council
during the original Lease application process for the project
during 2006 and
2007. Oriel intend to undertake similar consultations linked to the
stages of the
consent process.
Oriel undertook extensive consultation with all relevant
authorities during the
original Lease application process for the project during 2006 and
2007. Oriel
intend to undertake similar consultations linked to the stages of
the consent
process.
An email was sent to the DAU on 20th September 2018 notifying them
that this
application was to be submitted and requesting that they revert
with any input or
comment.
Oriel Windfarm Ltd Oriel Wind Farm Foreshore Licence Application
for Marine Survey
| Issue 1 | 12 November 2018 | Arup
\\GLOBAL\EUROPE\CORK\JOBS\263000\263904-00\4. INTERNAL\4-04
REPORTS\4-04-03 INFRASTRUCTURE\FORSHORE LICENCE APPLICATION\ISSUE
1\ORIEL WIND FARM
FORESHORE LICENCE ISSUE 1.DOCX
Page 19
An initial response was received on the 25th September and a letter
was received
from the Department of Culture, Heritage and the Gaeltacht on 2nd
November
2018. A copy of these emails and letter can be found in Appendix
A.
Appendix A
Consultation Correspondence
Oriel Windfarm Ltd Oriel Wind Farm Foreshore Licence Application
for Marine Survey
| Issue 1 | 12 November 2018 | Arup
\\GLOBAL\EUROPE\CORK\JOBS\263000\263904-00\4. INTERNAL\4-04
REPORTS\4-04-03 INFRASTRUCTURE\FORSHORE LICENCE APPLICATION\ISSUE
1\ORIEL WIND FARM
FORESHORE LICENCE ISSUE 1.DOCX
Page A1
From: Marie Murphy [mailto:
[email protected]] Sent: 21
September 2018 12:20 To: Manager Dau Cc: Garrett Connell; Michael
Daly Subject: Oriel Windfarm, Co. Louth
To whom it may concern
We act on behalf of Oriel Windfarm Limited (Oriel, an Irish
renewable energy company
which has been developing the proposed Oriel offshore wind farm
located in the North West
Irish Sea, 22km off the coast of Dundalk, County Louth. Oriel was
granted a Foreshore
Licence in October 2005 from the then DCMNR, giving permission to
carry out a technical
work plan to investigate the suitability of an area to the East of
Dundalk Bay for the
construction of an offshore wind farm. This included geotechnical
site investigation, an
engineering assessment and the completion of an Environmental
Impact Statement (EIS), and
Natura Impact Statement (NIS). Following the completion of this
work Oriel applied for a
Foreshore Lease to construct an offshore generating station in
February 2007. In Autumn
2008 the MLVC made a recommendation to grant a lease. Due to
government policy
changes the project was delayed however it is now coming back on
stream.
We are conscious of the time lapse since the previous
investigations and so wish
to undertake a new set of surveys which will comprise of
geophysical, environmental,
metocean and geotechnical marine surveys of the marine cable route
corridor and the
windfarm site.
The surveys are intended to aid the design by improving the
geological and geotechnical
understanding of the site. The data would also be used to inform
environmental appraisals by
providing information on the current situation and allowing impacts
to be predicted and
subsequently, appropriate mitigation to be developed.
We will be submitting an application fora foreshore licence for the
SI, including an AA
Screening shortly.
We are seeking input or comment from the DAU in respect of the
proposals as outlined. In
particular, if DAU has any specific requirements in respect of the
initial surveys, which it is
hoped to undertake early in 2019, then we would be grateful if a
response could be provided
as soon as possible.
Should you have any queries, please do not hesitate to contact
me.
Kind Regards,
t: +353 21 4223200 d: +353 21 4223372
—
Department of Culture, Heritage and the Gaeltacht
Aonad na nIarratas ar Fhorbairt Development Applications Unit
Bóthar an Bhaile Nua, Loch Garman, Contae Loch Garman Y35
AP90
Newtown Road, Wexford, County Wexford Y35 AP90
—
Development Applications Unit, Newtown Road, Wexford, Y35
AP90
[email protected]
www.chg.gov.ie
02 November 2018
Via email:
[email protected]
Re: Oriel Windfarm, located in the North West Irish Sea, 22km off
the coast of
Dundalk, County Louth
A chara
On behalf of the Department of Culture, Heritage and the Gaeltacht,
I refer to
correspondence received in connection with the above.
Outlined below are heritage-related observations/recommendations of
the Department
under the stated heading(s).
Nature Conservation
This Department notes that the applicant previously had a foreshore
lease in 2008 for an
offshore windfarm at Oriel which did not progress, and, due to the
lapse in time, now
wishes to conduct offshore site investigation work to an area east
of Dundalk Bay and will
be applying for a foreshore licence for same with an AA screening.
Please find below
comments on marine, birds, and appropriate assessment issues that
may assist.
Marine
The proposed development may be within and adjacent to Dundalk Bay
cSAC (site code:
IE000455). It would also be within and adjacent to Dundalk Bay SPA
(site code: 004026).
As noted in previous correspondence these sites are designated for
a range of habitats,
communities and species. In addition, there are a number of other
designations within a
distance of the proposed development.
According to Article 6(3) of Council Directive (92/43/EEC) (the
Habitats Directive) any plan
or project not directly connected with or necessary to the
management of the site but likely
to have a significant effect thereon, either individually or in
combination with other plans or
2
projects, shall be subject to appropriate assessment of its
implications for the site in view of
the site's conservation objectives. The provisions of this article
have been transposed into
the Irish Statute by Regulation 42 of the European Communities
(Birds and Natural
Habitats) Regulations (SI 477 of 2011).
It must be noted that all cetaceans are listed under Annex IV
(including those in Annex II) of
Council Directive 92/43/EEC (the Habitats Directive). Accordingly,
under Article 12 of that
Directive, it is an offence to deliberately capture, disturb or
kill a cetacean or take actions
that result in deterioration or destruction of their breeding sites
or resting places. This has
been transposed into Irish Law by Regulation 51 of the European
Communities (Birds and
Natural Habitats) Regulations. Introduction of certain sound
sources into the marine
environment, as may result from construction or surveys (e.g.
geophysical survey) over the
foreshore, have the potential to cause injury and possibly
mortality in these species. All
marine mammals are protected wild animals under the Fifth Schedule,
which includes all
cetacean and seal species, of the Wildlife Act (39 of 1976) and
Amendments. Under
Section 23 (as amended in 2000), it is an offence to kill, injure
or willfully interfere with or
destroy the breeding place or resting place of any protected wild
animal.
Details of the site synopses and qualifying interests of Natura
sites are available on
http://www.npws.ie/protected-sites. Further information related to
site specific conservation
objectives are also available at this location by entering the Site
Code (as in first
paragraph). Additional supporting information and referenced
publications are also
available to download from this resource. Site boundaries and
mapped habitat resources
are available to download from http://www.npws.ie/maps-and-data.
The proponent should
pay particular attention to the conservation objectives framed
around the Area, Range,
Structure & Function and Future Prospects for each qualifying
interest. It might also be
useful to review recent case law surrounding the development of
Article 6 of the Habitats
Directive and in particular the application of conservation
objectives for Natura sites.
In order to fulfil the Article 6 legal requirements the following
information should be supplied
within the application in relation to Annex I habitats:
A. Full description of proposed operation/activity
A full and finalised description of the proposed methodology
including the likely time-
scale of works. It is not currently clear what level of interaction
would occur within
Dundalk Bay SAC/SPA.
Are there similar operations/activities already in the locality? If
existing
operations/activities occur adjacently then a justification for
additional facilities should
be included. Would the proposed works act in conjunction with any
existing or planned
developments?
The facilities or licensing to be put in place to cope with both
biological and industrial
waste (e.g. extracted drill materials, etc.) generated during the
proposed survey work
should be detailed. Detailed contingency plans sufficient to
address potential negative
interactions with the marine environment e.g. oil spills.
B. Baseline description of relevant environment
A description of the biological environment over which the activity
would impact,
including the marine and terrestrial flora and fauna, must be
included if work is
envisaged with Dundalk Bay SAC.
Consideration should be given to whether the likely works would
result in disturbance or
loss to Annex I habitats. Any loss or interruption of normal
processes must be
quantified relative to the entire designated area not just within
the direct footprint of
development.
In addition to the information related to the Annex I habitats the
proponent should also
evaluate whether the operations would have a potential to interact
with marine mammals.
The proponent must ensure that the survey operations are compliant
with “Guidance to
Manage the Risk to Marine Mammals from Man-made Sound Sources in
Irish Waters”. The
latest version of this document was published in January 2014 and
is available to download
from http://www.npws.ie/marine/bestpracticeguidelines/.
Birds
No map has been supplied, but it seems likely that the proposed
site investigations could
be within and adjacent to Dundalk Bay SPA Special Protection Areas
(SPA) (site code:
004026) designated under the EC Birds Directive (Directive 2009/147
EC). In order carry
out an AA screening and to assess the likelihood of any impacts,
including ex-situ impacts,
on the SPA it would be necessary to have data on bird usage in the
vicinity of the proposed
site investigations.
Where bird surveys are necessary, surveys should be carried out by
suitably qualified
persons at an appropriate time of the year depending on the species
being surveyed for.
The AA screening should include the results of the surveys, and
detail the survey
methodology and timing of such surveys. It is expected by this
Department that in any
survey methodology used that best practice will be adhered to and,
if necessary, non Irish
methodology adapted for the Irish situation.
Baseline Data
With regard to the scope of baseline data, details of designated
sites can be found at
www.npws.ie/ . For flora and fauna the data of the National Parks
and Wildlife Service
(NPWS) should be consulted at www.npws.ie/ . Where further detail
is required on any
information on the website, a data request form should be
submitted. This can be found at
www.npws.ie/sites/default/files/general/Data%20request%20form.doc.
Further information
may be found at http://dahg.maps.arcgis.com/home/index.html. Other
sources of
information relating to habitats and species include that of the
National Biodiversity Data
BirdWatch Ireland (www.birdwatchireland.ie) and Bat Conservation
Ireland
(www.batconservationireland.org). Data may also exist at a County
level within the
Planning Authority.
Complete details of site investigations methodology
Complete details of the site investigations need to be provided in
order to allow an
adequate assessment to be undertaken. If necessary something
similar to an outline
construction management plan (CMP) may be necessary.
Appropriate Assessment (AA)
Guidance
Guidance on AA is available in the Departmental guidance document
on Appropriate
Assessment, which is available on the NPWS web site at:
www.npws.ie/sites/default/files/publications/pdf/NPWS_2009_AA_Guidance.pdf
and in the EU Commission guidance entitled “Assessment of plans and
projects
significantly affecting Natura 2000 sites. Methodological guidance
on the provisions of
Article 6(3) and (4) of the Habitats Directive 92/43/EEC” which can
be downloaded from
http://ec.europa.eu/environment/nature/natura2000/management/docs/art6/natura_2000_a
ssess_en.pdf.
However CJEU and Irish case law has clarified some issues and
should also be consulted.
Conservation objectives
In order to carry out the appropriate assessment screening, and/or
prepare the Natura
Impact Statement (NIS), information about the relevant Natura 2000
sites including their
conservation objectives will need to be collected. Details of
designated sites and species
and conservation objectives can be found on www.npws.ie/.
Site-specific, as opposed to
generic, conservation objectives are now available for some sites.
Each conservation
objective for a qualifying interest (QI) is defined by a list of
attributes and targets and are
often supported by further documentation. Where these are not
available for a site, an
examination of the attributes that are used to define site-specific
conservation objectives for
the same QIs in other sites can be usefully used to ensure the full
ecological implications of
a proposal for a site’s conservation objective and its integrity
are analysed and assessed.
It is advised, as per the notes and guidelines in the site-specific
conservation objectives,
that any reports quoting conservation objectives should give the
version number and date,
so that it can be ensured and established that the most up-to-date
versions are used in the
preparation of Natura Impact Statements and in undertaking
appropriate assessments.
5
Where further detail is required on any information on the website
a data request form
should be submitted. This can be found at:
www.npws.ie/sites/default/files/general/Data%20request%20form.doc.
Cumulative and ex situ impacts
A rule of thumb often used is to include all Natura 2000 sites
within a distance of 15 km. It
should be noted however that this will not always be appropriate.
In some instances where
there are hydrological connections a whole river catchment or a
groundwater aquifer may
need to be included. Similarly where bird flight paths are involved
the impact may be on an
SPA more than 15 km away.
Other relevant Local Authorities should be consulted to determine
if there are any projects
or plans which, in combination with this proposed development,
could impact on any Natura
2000 sites.
The above observations/recommendations are based on the papers
submitted to this
Department on a pre-planning basis and are made without prejudice
to any observations
that the Minister may make in the context of any consultation
arising on foot of any
development application referred to the Minister, by the planning
authority/ies, in her role as
statutory consultee under the Planning and Development Act, 2000,
as amended.
You are requested to send further communications to this
Department’s Development
Applications Unit (DAU) at
[email protected] (team monitored);
if this is not
possible, correspondence may alternatively be sent to:
The Manager
Newtown Road
Data Sheets
Oriel Windfarm Ltd Oriel Wind Farm Foreshore Licence Application
for Marine Survey
| Draft 2 | 2 October 2018 | Arup
\\GLOBAL\EUROPE\CORK\JOBS\263000\263904-00\4. INTERNAL\4-04
REPORTS\4-04-03 INFRASTRUCTURE\FORSHORE LICENCE APPLICATION\ISSUE
1\ORIEL WIND FARM
FORESHORE LICENCE ISSUE 1.DOCX
Top 3-axis receiver element
Bottom 3-axis receiver element
FUGRO DIGITAL SEISMIC CONE SYSTEM The seismic cone penetration test
(SCPT) provides in-situ seismic wave velocities as well as
piezo-cone penetration test (PCPT) parameters.
Seismic wave velocities give high-value
information about in-situ ground
modulus for use in earthquake design
studies and analysis of dynamically loaded
foundations.
Cone System are:
two 3-axis receiver set at a fixed
spacing of 0.5 m (downhole mode) and
one 3-axis receiver set (seabed mode)
Seismic source with trigger
Digital seismic trigger module
the seismic source activation
The signals are digitized inside the
penetrometer, reducing the number of wires
in the cable and reducing noise pickup and
cross talk in (long) cables.
In downhole mode a dual element seismic
penetrometer has the advantage of a single
source activation being recorded at two
depths simultaneously. This enhances
dependency on source reproducibility.
hydraulic underwater Shearwave Hammer
remotely operated.
WWW.FUGRO.COM 1
Digital Seismic Cone Penetrometer
10 cm2, 15 cm2
0.5 m
28 Hz
EQUIPMENT FLYER
sequence of the following steps:
Interrupting the standard CPT
test level
cycles to permit stacking
the preliminary depth profile within the
data acquisition software
as required.
traces for, usually multiple, test depths. The
use of data filtering techniques is common.
Data processing includes calculation of
seismic wave velocities, with additional
options such as:
maximum cross-correlation of
law of refraction for ground layers
showing abrupt changes in density
or stiffness
Fugro Tool Data Sheet
1005 Four Arm Calliper Instrument The 4 arm calliper has two pairs
of arms which give two orthogonal hole diameters plus an average
borehole diameter. This tools works in most borehole conditions and
will function above and below the water table. General Data Supply
Voltage 80-150VDC Supply Current 30-60mA Current with motor
150-200mA Type of Top-Sub ANTARES 14-pin Length 2.177m Diameter
52mm Weight 15kg Pressure Rating 40MPa Max Temp 70°C Sensor Data
Calliper 1-3 Cal13 in mm Calliper 2-4 Cal24 in mm Cable Head
Voltage CHV in V Electronics Temp Temp in °C Sensor Position
Calliper 1-3 and 2-4 2.10m below top of top sub Measuring Range
Calliper 1-3 and 2-4 50 to 800mm +/- 2% Rec. Min. Bh. Di 75mm Rec.
Max. Bh. Di 800mm
Fugro Tool Data Sheet
Application The calliper is used to measure the diameter of the
borehole. It can be used in both open and cased boreholes. This
tool is usually deployed before any other tool to check the
integrity and condition of the borehole. The 4 arm calliper has 2
pairs of interdependent arms which measure the X and Y diameter of
the borehole. This gives a measure of the ovality of the borehole
which can indicate differential squeezing of the formation. The
tool is normally deployed before any other tools to check the
integrity and condition of the borehole. The calliper curves
indicate the location of different casing types and breakages,
fractures and fissures, and borehole caving and squeezing. It can
also be used for the identification of soft and hard formations
which can be correlated with other measurements to further refine
lithological interpretations. As borehole condition can affect the
quality of many other geophysical readings the calliper log is very
important for quality control of other survey data and is required
for environmental corrections to other measurements.. The curves
can also be used to calculate borehole fluid, cement or backfill
volumes. Example Log
O ffsh
High Performance Corer - HPCTM
Fugro Alluvial has developed a High Performance CorerTM to cope
with the demand for longer sample
recovery in dense granular and stiff cohesive materials.
Application
sample barrel design. The new motor technology allows an
optimisation of excitation frequency and vibration amplitude
to suit any particular soil conditions. At it’s most powerful
settings the HPCTM can apply more than twice the power and
five times the vibration amplitude of a standard vibrocorer.
All of this translates into much longer sample recovery.
The HPCTM may also be used with a newly developed low area
ratio sample barrel which minimises the sampling disturbance
in
clay soils.
Optional Features
• Umbilical spooler for deep water projects
• Easily transported by road, sea or air
• Real time penetration and base tilt registration
Applications
• Offshore oil and gas pipeline geotechnical investigations
Specification
• 3m to 6m core barrel (8m optional)
• Mild steel barrels 101.6 mm o.d. 93.6 mm i.d.
• PVC Liners Sample diameter 84mm
High Performance Corer - HPCTM
Fugro Alluvial Offshore Limited Morton Peto Road
Gapton Hall Industrial Estate
[email protected]
High Performance Corer - HPCTM
This document includes technical information. Reasonable effort has
been made to verify its
correctness at the time of compilation but details may change with
the passage of time and
without prior notice. Fugro does not accept any liability for loss
or damage of any kind arising
from use of the information.
The HPCTM penetration and soils data may be used in
combination
with CPT data to further refine stratigraphic and soils
parameter
logging along pipelines or in discrete location seabed soil
engineering projects.
Example of HPC™ data set:
FUGRO EXCALIBUR Excalibur is the largest in the Fugro fleet of
jack-up barges, in class with Germanischer Lloyd. This 8-legged
barge is capable of working in water depths up to 40 m and has been
used extensively for installing foundations for offshore wind farm
projects and also can be equipped with an integral foundation
drilling unit.
The jack-up provides a very stable working
platform with accommodation for up to 40
personnel.
Galley
Navigation and communication
WWW.FUGRO.COM 1
EQUIPMENT FLYER
Classification society: DNVGL Notation: Non propelled
self-elevating unit Full refurbishment: 2018 Year of last class
survey: 2018 (renewal every 5 years) Flag: The Republic of Vanuata
Jacking system: Pneumatic/hydraulic Power pack configuration:
Diesel hydraulic Max. separation: 45 m (length of leg below hull)
Draft: 2.73 m Max. payload: 1031 t Max. deck load: 785 t @ 10 t/m2
Gross tonnage: 2390 Net tonnage: 717 Deck construction: Steel
monohull
Length: 60 m Breadth: 32 m Moulded depth: 4.24 m Number of legs: 8
Max. operating water depth: 37.1 m (dependant on environmental
conditions) Main crane: Huisman Max. boom length: 62.4 m Max.
platform lift: 230 t @ 17.5 m Marine lift (min. radius): 190 t @ 9
m Auxiliary crane: Hydralift (5 t) Max. leg length: 55 m Leg dia.:
1.8 m Number accommodation: 40
SPECIFICATIONS Excalibur Jack-up Barge
L
[email protected]
WWW.FUGRO.COM
FUGRO FUGRO 1200 The Fugro 1200 is a sturdy jack-up platform for
support of geotechnical investigation, foundation piling and
general heavy lift marine construction operations. The fast jacking
speeds and the wide envelope of the pile gate complete a package
which, for the class of vessel, is hard to beat.
Fugro purchased this vessel in 2010 and
upgraded the jacking system from a 0.25 m
jacking ram stroke to an impressive 3.0 m,
as well as installing a cantilvered pile gate
currently set up for installing vertical and
raked piles up to 1.8 m diameter.
The vessel has been mobilised for a
number of projects including jetty piling and
superstructure installation, wave energy pile
installations and offshore desalination
geotechnical investigation drilling in deeper
water where smaller modular jack-up
barges are not able to operate. Fugro own
EQUIPMENT FLYER
over 7.0 m diameter.
to support drilling operations up to 3.5 m
diameter. The vessel is able to operate in
water depths up to 30 m and has a design
payload of 1000 t with category four storm
survivability in suitable water depths.
WWW.FUGRO.COM 1
EQUIPMENT FLYER
Jacking System
Type: Fugro / De long hydraulic system with pneumatic
grippers
Stroke: 3 m Legs: 4 Leg length: 55 m Leg diameter: 1.8 m Leg
weight: 100 t each - new in 2016
SPECIFICATIONS Fugro 1200 Jack-up Barge
WWW.FUGRO.COM 2
Other
Fuel capacity: 100 000 l Fresh water capacity: 100 000 l Reverse
osmosis and sewage treatment plant
Dimensions
Barge length: 50 m Beam: 24 m Depth: 4.3 m
Legs / jacking system: 4 no. new 55 m legs, 1800 mm dia with Fugro
gripper/ bladder system - 2016
Payload: 1000 t Deck loading: 15 tm2
© FU
Constant penetration rate of 20 mm/s
independent from required thrust.
High CPT data quality
by varying penetration rates.
Improved safety, reduced
the system safer to service and easier
to deploy.
maintain. Due to the improved force
transmission, the rods, either coiled or
built from conventional 1m sections,
will have a longer operational lifespan.
Coiled rods can easily been replaced.
FUGRO SEACALF®
MKIV – CONTINUOUS DRIVE The Fugro SEACALF® MkIV is a novel seabed
deployed Cone Penetration Test (CPT) system, employing a coiled
push rod and a compact continuous thrust machine.
COMPACT AND EFFICIENT CPT SYSTEM By using a novel combination
of
techniques, the new SEACALF® MkIV
provides higher efficiency, a smaller system
to handle and improved reliability compared
to conventional seabed CPT systems.
This new continuous drive system (CDS)
has been developed to improve reliability, to
ease handling and to reduce build- and
maintenance costs. Special clamping
the rod, resulting in an efficient system with
a push- and pull capacity of 200kN and a
very constant penetration rate, resulting in
higher quality of CPT data. The drive
system consists of simple components,
EQUIPMENT FLYER
volume and easy to maintain.
Traditional seabed CPT systems of this
order typically employ manually assembled
1m push rods. The SEACALF® MkIV can
employ such a conventional rod but can
also be equipped with a coiled push rod.
The coiled rod allows for compact storing
and safe handling and can, thanks to an
advanced straitening- and recoiling device,
be coiled and stored inside a small frame.
The use of a coiled rod eliminates the need
for manual rod handling, it creates a safer
work environment and enables a significant
reduction in deployment time.
EQUIPMENT FLYER
General
Weight submerged max 260 kN Height 5.5 m Footprint 3 x 3 m Rated
water depth 3000 m Push capacity 0 – 200 kN Pull capacity 0 – 200
kN Penetration length 0 – 55 m Penetration rate 20 mm/s
Sensors
Communication Fibre Optic Seabed System Sensors Roll and Pitch
Thrust Machine Sensors Thrust, displacement, velocity
System Diagnostics Various pressure and displacement sensors
Sensors and communication
Electrical Conductivity cone Electrical conductivity (S/m)
Temperature Cone Temperature (°C) Seismic Cone Shear wave velocity
(m/s) Natural Gamma cone Natural gamma ray (CPS)
Magnetometer cone Magnet flux density, magnetic field horizontal
and vertical angle (T, °)
Piezoprobe Pore pressure (MPa)
COMPONENTS The Fugro SEACALF® MkIV system
comprises the following components:
used for advancing the penetrometer to the
required test depth. Coiled during transport
and storing, straightened by mechanical
device upon CPT testing. Or, also possible,
built from conventional 1m sections.
SEACALF® MKIV- CONTINUOUS DRIVE TECHNICAL SPECIFICATIONS
Piezocone penetrometer (CPTU or PCPT) -
Cylindrical terminal body mounted on the
lower end of the push rod, including a cone,
a friction sleeve, a filter and internal sensing
devices for the measurement of cone
resistance, sleeve friction, pressure and
inclination. By default, a standard 15 cm2
piezocone penetrometer is employed, but
other penetrometer sizes can also be used.
Continuous Drive System - Machine
required constant rate of penetration is
controlled. The thrust machine provides a
nominal force of 200 kN. Nominal
penetration and retraction rate is 20 mm/s.
Cyclic testing is also possible.
Deployment frame – Frame for mounting
and handling, providing reaction weight for
the thrust machine. Weight and size of the
frame may be adjusted to suit expected soil
conditions, vessel and handling options.
Data acquisition and control system -
Apparatus and software, including sensors,
data transmission apparatus, recording
FUTURE DEVELOPMENTS Sea trials were successful and indicated
that the requirements set in the original
design philosophy are met. The SEACALF®
MkIV system proved to be efficient and
robust, providing similar or better
performance compared to existing systems.
The current design of the SEACALF® MkIV
mainly focusses on servicing the offshore
wind industry and traditional oil and gas
industry, but the concept offers many
opportunities for a wide range of
General description
Fugro gathers high quality soil data with the help of
experienced personnel and state of the art techniques.
With the geotechnical information Fugro consults in
foundation engineering, interpretation, scientific projects
and geohazard advice.
The data is collected in-situ by performing Piezo Cone
Penetration
Tests (PCPT), or other probe tests, and by taking (core)
samples.
The samples are tested in the laboratory and combined with
the PCPT results, provide a detailed profile describing the
soil
characteristics.
downhole operation and seabed operation. This folder
describes
the seabed operation.
During seabed deployment operations, PCPT’s and other probe
tests can be performed to a maximum of 40 m below seabed
(bsb), and soil can be sampled to 25 m bsb, depending on the
system and the soil conditions. Seabed operations are well
suited
for investigations for shallow foundation types.
A geotechnical site investigation is generally performed from
a
specialised geotechnical vessel or a vessel of opportunity
such
as a survey or supplier vessel. The vessel is positioned
above
the testing location and the seabed unit or sampling system
is
deployed with the aid of an A-frame, a crane, through the
ship’s
moonpool or with a special deployment structure over the side
of
the vessel. After the seabed unit or sampling device is placed
on
the seabed, the test is performed and/or a sample is taken.
The
approach and programme is adapted to client requirements and
site conditions, such as water depth, heave, current, seabed
slope
and weather conditions. Two basic subsystems can be
identified
in seabed operation mode: systems using hydraulic thrust and
gravitational systems.
FUGRO SMARTPIPE® is developed for in-situ testing to model
flow
lines and pipe-soil interaction with very soft soils in water
depths
to 2,500 m. By reducing uncertainty in pipe-soil
interactions,
pipeline design can be more effective, leading to cost
reduction
and risk mitigation for the overall project. It is an in-situ
testing
system which consists of an instrumented pipe segment. This
pipe segment directly measures the interaction forces and can
be
moved in vertical, axial and lateral dimensions. In addition,
pore
water pressure is measured at several discrete points along
the
underside of the pipe.
The seabed frame is also equipped with a T-bar, mini T-bar,
camera, frame settlement gauge and a roll and pitch sensor. It
can
be deployed from a specialised geotechnical vessel or a vessel
of
opportunity.
investigations. Both systems use the same base reaction frame
which is controlled through a combined power and data
umbilical
cable, which also is used for hoisting the frame.
Systems using hydraulic thrust
The SEACALF® system is an electronic testing platform able to
perform continuous PCPT’s and other probe tests to 40 m bsb
in water depths to 2,500 m and is mainly used for
geotechnical
site investigation for seabed structures, jack-up rigs,
production
platforms and other offshore structures.
The SEACALF® system consists of Fugro’s Seabed Frame (SBF)
with an integrated drive unit. The drive unit uses two or
four
hydraulic powered wheels which are pushed against a sounding
rod (string) using hydraulic cylinders. The rod, equipped with
a
cone or probe, is pushed into the soil by the rotating wheels at
a
controlled rate. If additional thrust is desired, two drive units
can
be stacked. Electric power, data and real-time communication
are
transmitted via an Underwater Power Cable (UPC) with the
vessel.
The SEACALF® system is usually deployed from the moonpool of
the vessel and can also be equipped with additional equipment
such as a camera and a frame settlement gauge.
SEAROBIN®
The SEAROBIN® is a conical lightweight reaction frame,
designed
to perform 3 m PCPT’s using a small drive unit. An integrated
push
and grab sampler allows soil sampling during the same
deployment.
Deployment time is short, thus this system is particularly
suited
for investigations involving a high number of test runs, such as
for
pipeline and cable routes. The maximum water depth in which
the
SEAROBIN® can operate is 2,500 m.
The SEAROBIN® is controlled through a combined power and
data umbilical cable, which also is used for hoisting the
frame.
The SEAROBIN® can be deployed from specialised geotechnical
vessels or vessels of opportunity.
SEAROBIN®
The SMARTSURF is used for geotechnical investigations to
2,500
m water depth. The SMARTSURF can performe PCPT’s and other
probe tests, mini T-bar and take a sample in a single deployment.
It
has the same deployment frame as the FUGRO SMARTPIPE® and
a change to SMARTSURF can be quickly made and complement
the data necessary for flow lines and cable routes.
SEASCOUT¹
The SEASCOUT is a lightweight in-situ test system that is
primarily
used for cable route investigations. It has a very small, fast
deployed
spread and can even be used from a ROV and therefore can test
in hard to reach places, for example underneath an oil platform
or
within pipeline trenches.
A 5 cm2 piezo-cone is attached to a coiled rod that is pushed
into
the soil with a drive unit to 10 m bsb. The SEASCOUT can be
deployed using an A-frame or crane in 2,500 m water depth.
Roson Seabed system¹
The Roson seabed frame is equipped with one or more stacked
Roson drive units used to perform PCPT’s and other probe tests
to
15 m bsb in 500 m water.
Gravitational systems
Fugro uses a range of seabed sampling systems such as corers
and
bulk samplers. The sample systems are used to retrieve high
quality
and relatively undisturbed samples in very soft to soft soils. Only
the
High Performance Corer - HPC™ (Vibrocorer) can be used in
harder
soils. Some of the systems are lowered fast on the wire to
retrieve
the sample; others have a trigger release mechanism that
allows
the corer to free-fall once the corer is suspended a couple of
meters
above the seabed. Most of the corers also have a stationary
piston
that prevents the sample flush away when the corer is
retrieved.
STAtionary Piston Gravity CORer - STACOR®¹
The STACOR® is a piston sample corer able to retrieve, large
diameter (105 mm) and long samples in very soft to soft soils.
It
can sample in water depths to 3,000 m and the maximum sample
length is 25 m.
The STACOR® has a trigger release mechanism and is deployed
with a specialised deployment system.
Kulemberg Piston Corer
The Kulemberg Piston Corer can retrieve very soft to soft
soil
samples in water depths to 3,000 m. It also has a trigger
release
mechanism. The maximum sample length is 6 m. It can be
deployed
either from the side or the back of the vessel with an
A-frame.
Variable Weight Gravity Corer
The Gravity Corer can retrieve soft to stiff soil samples in
water
depths to 3,000 m; the maximum sample length is 6 m. The mass
of the Gravity Corer can be adjusted by adding weight blocks
to
the corer for different soil conditions. The tool does not
free-fall
but is lowered on a wire and uses the winch speed to
penetrate
the seabed. It can be deployed either from the side or the back
of
the vessel with an A-frame.
SMARTSURF deployment
2264 SG, Leidschendam
© Fugro 2011/300
Seabed Operation
Jumbo Piston Corer¹
The Jumbo Piston Corer is a large trigger release corer used
to
retrieve large diameter and long samples in very soft to soft
soils. It
can sample in water depths to 3,000 m and the maximum sample
length is 20 m.
It can be deployed either from the side or the back of the
vessel
with an A-frame.
High Performance Corer - HPC™ (Vibrocorer)¹
The HPC™ is a sampling device with an electric motor that
creates
vibrations which drives the core barrel into the soil. The
working
water depth is 450 m and it can retrieve 6 m samples in
stiff,
granular soils.
Box Corer¹
The Seabed Box Corer is a bulk, sampling device for sampling
the seabed top soil. These samples of the very soft, cohesive
top
layer are very suitable for sub-sampling, laboratory testing and
mini
T-bar testing. A bar with weight blocks pushes a square box
into
the ground. When the box corer is lifted, a lid closes below
the
sample box.
Grab Sampler
The grab sampler is also a bulk sampler which is triggered
when
touching the seabed. Grab samples are disturbed and are used
for examining mineral deposits, aggregate prospecting and
environmental and pre-dredging research. When the sampler is
lifted, the scoops close around the soil.
¹:For detailed information of this seabed system please
consult the specific brochure.
Very soft/soft soils
SMARTSURF
2.5 tons
25 kN
approx. 4” sample tube
barrel witch core catcher,
core diameter 86.4 mm
capacity: 30 liter
THE SEABED UNIT The penetration force for this evolution of the
SEACALF is provided by the Fugro BLOCK- DRIVE system. The rods are
driven from a power pack mounted on the seabed frame. The frame is
3.4 m high and the base is 3 m x 3 m. It weighs approximately 25
tonnes in air. For extra reaction this can be increased by the
addition of ballast blocks. The unit can be set up to provide 100
kN (10 tonnes) or 200 kN (20 tonnes) of penetration thrust, by
using one or two block-drives systems.
PERFORMING A TEST An electronic cone penetrometer, connected to a
string of rods, is pushed into the seabed at a controlled rate. As
it penetrates the variations in cone resistance, sleeve friction
and pore pressure (or other parameters) are continuously recorded.
Signals from the sensors pass through a control and data
transmission module on the seabed frame are then transmitted, in
digital form, to the surface via a combined power and signal
umbilical. The results are displayed graphically on the monitor and
simultaneously recorded. The operator main-
tains complete control of the seabed unit through the
computer.
Block-Drive Seacalf CPT
The BLOCK-DRIVE SEACALF is a further development of the SEACALF
system, which has been in use for offshore geotechnical
investigations since 1972. It is an underwater rig for performing
continuous static cone penetration tests (CPT) from the seabed in
water depths ranging from 10 m to 500 m. Tens of thousands of tests
have been performed with the SEACALF to investigate sites for
wind-turbines, jackup rigs, production platforms, pipelines and
other offshore structures.
BlockDrive.qxd:3D_Mapping_Pro2.qxd 13-10-2008 11:01 Pagina 1
TEST PENETRATION The amount of penetration that can be achieved at
a specific site depends on upon the soil con- ditions and the
available reaction force. In 200 kN mode with full ballast,
penetration typically ranges from about 20 m in dense sands and
hard gravely clays to between 30 and 60 m in softer ‘normally
consolidated’ clays. Any length test rod can be built into the rig
prior to deploy- ment. The rod is kept vertical by means of ten-
sioned wire connected to the rigging system.
INSTRUMENTATION Standard instrumentation incorporated on the seabed
frame includes a dual axis inclinometer and a water pressure
transducer. A CCTV cam- era can be attached to the frame and the
sig- nals transmitted via the main umbilical. The system can also
be adapted to perform vane shear tests, plate load tests or push
other instrumented probes into the seabed including:
• seismic cone • thermal and electrical conductivity cones • full
displacement pressuremeter • dilatometer • nuclear density probe •
model caisson structures
DEPLOYMENT VESSELS The BLOCK-DRIVE SEACALF can be used from any of
the Fugro geotechnical drilling ships or can be modified for
deployment from other suit- able vessels. It can be deployed on
twin line through a moonpool or via crane or A-Frame over the side
of the vessel. The system is installed on our own specialised
geotechnical investigation vessel – the Fugro Commander.
EQUIPMENT SPECIFICATION Thrust capacity Weight in air Height Base
size Power supply
Fugro Alluvial Offshore Limited Morton Peto Road, Gapton Hall
Industrial Estate, Great Yarmouth, NR31 0LT UK Tel : +44 (0) 1493
650484 Fax : +44 (0) 1493 440319l Web: www.alluvial.co.uk /
www.fugro.com
Fugro Alluvial Offshore Limited is a member of the Fugro Group,
with offices throughout the world
Oktober 2008
200 kN 250 kN 4.9 m 3m x 3m 20-40 kVA
BlockDrive.qxd:3D_Mapping_Pro2.qxd 13-10-2008 11:01 Pagina 2
TM
High Performance Corer - HPCTM
The HPCTM utilises innovative electric motor technology and sample
barrel design. The new motor technology allows an optimisation of
excitation frequency and vibration amplitude to suit any particular
soil conditions. At it’s most powerful settings the HPCTM can apply
more than twice the power and five times the vibra- tion amplitude
of a standard vibrocorer. All of this translates into much longer
sample recov- ery.
The HPCTM may also be used with a newly developed low area ratio
sample barrel which minimises the sampling disturbance in clay
soils.
• Umbilical spooler for deep water projects • Easily transported by
road, sea or air • Real time penetration and base tilt
registration
Applications • Pre-dredge surveys • Environmental investigations •
Mineral/Aggregate prospecting • Inshore civil engineering site
investigations • Offshore oil and gas pipeline geotechnical
investigations
Specification • 415V, minimum 45 kVA power supply • 3m to 6m core
barrel (8m optional) • Mild steel barrels 101.6 mm o.d. 93.6 mm
i.d. • PVC liners 88.9 mm o.d. 84.14 mm i.d.
Optional sample sizes available
High Performance Corer - HPCTM
CORE BARREL(m)
Optional Features
Fugro Alluvial has developed a High Performance Corer to cope with
the demand for longer
HEIGHT(m) BASE(m) WEIGHT(kg) • Maximum working water depths of 350
m
Fugro Alluvial Offshore Limited Morton Peto Road Gapton Hall
Industrial Estate GreatYarmouth NR31 OLT UK Tel : +44 (0) 1493 650
484 Fax : +44 (0) 1493 440 319 www.alluvial.co.uk
[email protected]
February 2008 274
The specification of the equipment in this data sheet may be
subject to modifications without prior notice
The HPCTM penetration and soils data may be used in combination
with CPT data to further refine stratigraphic and soils parameter
logging along pipelines or in discrete location seabed soil
engineering projects.
Example of HPC™ data set:
q q g
Introduction
cone) for performing a piezo-cone penetration test (PCPT
or CPTU). Fugro has developed a range of state of the art,
in-house designed and built piezo-cones.
Application
A PCPT involves the measurement of the resistance of the soil
to
steady and continuous penetration of the piezo-cone equipped
with
internal sensors. The measurements comprise penetration
depth,
cone resistance, sleeve friction, pore pressure and inclination
from
vertical.
during penetration, as well as the hydrostatic pore pressure.
The transient pore pressures can be significant for some low-
permeability soils. Measurement of the dissipation of the
transient
pore pressure is feasible during a penetration interruption.
The
dissipation measurements permit the estimation of the in-situ
coefficient of consolidation.
ground conditions, provide a stratigraphic profile and thus
an
accurate knowledge of the soil layering which is essential to
a
geotechnical study.
Fugro Piezo-cone-penetrometer
2264 SG, Leidschendam
© Fugro 2011
Piezo-cone penetrometer
Instrument Details
The basic and most commonly used piezo-cone measures three
parameters: the cone resistance (qc), the sleeve friction (fs) and
the
pore pressure (u). The cone and the friction sleeve consist of
high-
quality steel that is resistant to corrosion and abrasion. It has
a