New EN 13852-1 Offshore Cranes Edition 2013

Svein Harald Hetland, MSc, BP Lifting Technical Authority

New revision of EN13852-1 expected in 2013

Status of the work

Hearing and implementation schedule

Some changes proposed by the working group

2

CEN/TC147 Crane safety

4 25 April

2013

TC147

WG1 Terminology and harmonisation WG2 Crane Safety Design - General

WG3 Crane Safety Design Requirements for equipment WG4 Crane Safety Requirements for health and safety

WG5 Crane Safety Requirements for inspection and safe use

WG

11

Mob

ile c

rane

s

WG

18

Load

er c

rane

s

WG

19

Cab

le c

rane

s

WG

20

Han

d op

erat

ed c

rane

s

WG

12

Tow

er c

rane

s

WG

13

Sle

win

g jib

cra

nes

WG

14

Brid

ge a

nd g

antry

WG

15

Offs

hore

cra

nes

WG

16

Floa

ting

cran

es

WG

17

Win

ches

and

hoi

sts

WG

22

Man

ipul

atin

g de

vice

s

WG

21

Non

fixe

d at

tach

men

ts

Existing EN13852-1 May 2004 is revised due to:

5

More than 5 years since publication

Two amendments, numerous recommendations for use

Reference standards being replaced

Alignment with other crane standards necessary

The New Machinery Directive into force on 29 Dec 2009

May 2004 edition is no longer harmonised

Design requirements revised to be more general for all kind of boom configurations

New revision of EN13852-1 expected in 2013, revision time schedule

2004

Firs

t edi

tion

Har

mon

isat

ion

2005 2009 2011

New

wor

k ite

m

2010 2013 2013

Form

al V

ote

2nd

CE

N E

nqui

ry

Com

men

t re

solu

tion

mee

tings

2

Pub

licat

ion

1st C

EN

Enq

uiry

C

omm

ent

reso

lutio

n m

eetin

gs

1

2007

7

Summary from the revision work (According to Microsoft Word): 25001 words (94 pages) 4630 revisions are done 1621 new insertions 1489 formatting 271 moves other

Principle of safety integration

8

Vibrations

Electrical hazards

Harm: List of significant hazards:

New revision of EN13852-1 expected in 2013 Main draft changes strength and stability

Implementation of EN13001 series to replace FEM Sec.I reference EN13001-1 Crane safety General design

Part 1: General principles and requirements Part 2: Load actions

CEN/TS 13001 Crane safety General design Part 3-1: Limit states and proof of competence of steel structures Part 3-2: Limit states and proof of competence of wire ropes in

reeving systems Part 3-3: Limit states and proof of competence of wheel/rail

contacts Part 3-4: Machinery (missing , FEM 1.001 still to be used) Part 3-5: Limit states and proof of competence of forged hooks

9

Amendments 1

Scope does not cover: (new / amended list)

operations at an ambient temperature above 45 C;

hand powered cranes and other cranes with a rated capacity less than 2 t or outreach less than 8 m;

accidental loads due to collisions;

emergency rescue operations; (except training)

Scope does not cover: (deleted items)

loads due to earthquake

cranes on seagoing vessels, excluded from the scope of the Machinery Directive

10

Amendments 2B

Some new definitions: 3.20 off-board lift lifting operation between the offshore installation and a floating unit or the sea 3.22 offshore crane crane mounted on an offshore installation and used for off-board and on-board lifts 3.23 offshore installation structure supported by the seabed or floating unit, exposed to an offshore marine environment 3.24 on-board lift lifting operation within the offshore installation 3.30 rated capacity limiter (RCL) device or system that automatically prevents the rated capacity from being exceeded during on-board lifts or personnel lifts

11

Amendments 5 Figure 3 Off-board lifts

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Key:

1 Deck velocity

5 Boom tip velocity

9 Wind

2 Offlead 6 Snow and ice

10 Sideload

3 Installation inclination (trim and heel)

7 Vertical installation acceleration

11 Actual hook load

4 Hoisting velocity

8 Horizontal installation acceleration

Non-electro technical equipment shall in addition to the requirements of this standard, be in accordance with EN 13135-2:2004+A1:2010. Safety related parts of control systems shall conform to the required performance level in accordance with ISO 13849-1:2008, see Annex K.

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5.3.2 Non-electrotechnical equipment

5.3.7 Winches and brakes

Brakes shall be in accordance with Annex I. In addition to the normal working brake, luffing winches shall be equipped with a mechanically and operationally independent back-up brake, with separate control circuits.

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New revision of EN13852-1 expected in 2013 Some other main changes

Preferred location of MOPS on left hand

Preferred location of Emergency stop on right hand

Rated capacity limiter, RCL

Winch motor overspeeding protection

Fire protection

Secondary motion limiters for

personnel lifting

Static Wire Rope Design Factors

2

3

4

5

6

0 50,000 100,000 150,000 200,000 250,000 300,000 350,000 400,000

SWL (lb)

Des

ign

Fact

or

API 7th EditionAPI 6th EditionEN 13852-1DNVLloyds

Note: API 7th Edition, EN 13852-1, DNV and Lloyds curves are all overlapping

API 6th Edition

10t SWL 160t

1,50

2,00

2,50

3,00

3,50

25,7

1

23,2

3

21,1

8

19,4

6

18,0

0

SF

Dyn

D/d-ratio

Dynamic safety factor running rigging new EN 13852-1:2013

160t

EN13852-1:2013

Dynamic safety factor reduced by D/d-ratio bending factor according to CEN/TS 13001-3-2.

DNV 2.22 & API 2c

d

2.3

DNV 2.22 & API 2C: SF = 2.3 = dynamic factor for the crane SWL = Safe Working Load (kN).

1,5

2

2,5

3

3,5

SF D

yn

Rated capacity tonnes

Dynamic safety factor running rigging

DNV 2.22 & API 2c

New EN13852-1

EN 13862-1:2004

New load reference factor reduction to align with the existing practice in EN13852-1:2004 for reduction of safety factor up to 160t.

New EN ISO 13849-1

A crane with a life time of 20.000 operating hours: PLr= c Probability for critical failure in the lifetime is >= 2% til < 6% PLr= d Probability for critical failure in the lifetime is >= 0.002 til < 2%

Requirement for Performance Level:

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New revision of EN13852-1 expected in 2013 Main draft changes lifting of persons, 5.10

Lifting of persons is defined as a high risk application

50% reduction of the rated capacity for the lifting of persons is replaced by applying a risk coefficient n = 1.5 (Gives still approx. 50% reduction of in-board rated capacity, but utilize the passive shock absorbers for off-board MOB boat lifts.)

EN 13001-2:2004 clause 4.3.2 states how the risk coefficient shall be used in the proof calculations

The risk coefficient shall also be included in the wire rope safety factors, ref. Annex G of EN13852-1

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5.9.2 Emergency Operation System 1/2

General-purpose offshore cranes shall be equipped with an emergency operation system (EOS). The EOS shall make it possible to operate the crane with reduced speeds in the following emergencies:

1.Single point failure or interruption of the main power supply

2.Single point failure in the main power unit 3.Single point failure in the control system

The main parts of power and control system and the EOS are shown in Figure 6.

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EOS - Emergency Operation System 2/2

23

It shall be possible to make the EOS operational without undue delay taking into consideration the following; location of the crane (fixed or floating installation) mode of operation (load handling or lifting of personnel) operational limitations (environmental conditions)

The minimum hook velocity for all main functions of the EOS shall be10 % of the magnitudes specified in Annex B.

0

5

10

15

20

25

30

35

40

45

0 5 10 15 20 25 30Time, t [min]

Swing

angle

[deg

]

DS10000Tz = 8.2sTp = 10.5sHsig = 2mHeading = 15 degreesLswing = 27 mDamping = 0% vs 0.5%JONSWAP spectrum

Within few minutes, the wire with forerunner (typical pendulum length between 10-40m) end up in to resonance with vessels motions at typical wave length periods of 8-12 sec.

New revision of EN13852-1 expected in 2013 B.4.1 Hoisting and lowering velocity

( )22 CDHH VVKV +=

VH

where KH is a velocity factor according to table B.3

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Table B.3 - Velocity factor KH

Single fall reeving Multiple fall reeving

No hook load 0,65 0,40

At rated capacity 0,50 0,28

0,00

0,50

1,00

1,50

2,00

2,50

3,00

1,00 1,50 2,00 2,50 3,00 3,50 4,00 4,50 5,00 5,50 6,00

m/s

New min. hoisting speed, single fall, no load

Fixed

Semi

FPSO

EN13852-1:2004/API 2c 6th/DNV2.22

DNV 2.22 floaters

Significant waveheight in meters

New revision of EN13852-1 expected in 2013 B.4.2 Horiziontal hook velocity

( )22 CDRR VVKV +=

With and without load

VH VR

VL

where KR and KL is a velocity factor according to table B.4

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( )22 CDLL VVKV +=

Horizontal speed

Slewing FACTOR 0,60 Radius 22 000 mm

RPM SWH Fixed Semi FPSO Fixed Semi FPSO

m 1,00 0,40 0,43 0,50 0,17 0,19 0,22 1,50 0,57 0,61 0,72 0,25 0,27 0,31 2,00 0,72 0,78 0,94 0,31 0,34 0,41 2,50 0,86 0,94 1,14 0,37 0,41 0,49 3,00 0,98 1,08 1,33 0,43 0,47 0,58 3,50 1,10 1,21 1,52 0,48 0,53 0,66 4,00 1,20 1,34 1,70 0,52 0,58 0,74 4,50 1,30 1,46 1,87 0,56 0,63 0,81 5,00 1,38 1,57 2,04 0,60 0,68 0,89 5,50 1,47 1,68 2,21 0,64 0,73 0,96 6,00 1,54 1,79 2,37 0,67 0,78 1,03

Luffing FACTOR 0,10

Required speed SWH Fixed Semi FPSO

m 1,00 0,07 0,07 0,08 1,50 0,09 0,10 0,12 2,00 0,12 0,13 0,16 2,50 0,14 0,16 0,19 3,00 0,16 0,18 0,22 3,50 0,18 0,20 0,25 4,00 0,20 0,22 0,28 4,50 0,22 0,24 0,31 5,00 0,23 0,26 0,34 5,50 0,24 0,28 0,37 6,00 0,26 0,30 0,40

Luffing FACTOR 0,25

Required speed SWH Fixed Semi FPSO

m 1,00 0,17 0,18 0,21 1,50 0,24 0,25 0,30 2,00 0,30 0,33 0,39 2,50 0,36 0,39 0,47 3,00 0,41 0,45 0,55 3,50 0,46 0,51 0,63 4,00 0,50 0,56 0,71 4,50 0,54 0,61 0,78 5,00 0,58 0,66 0,85 5,50 0,61 0,70 0,92 6,00 0,64 0,74 0,99

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Required speed [m/s]

2

Knuckle boom/lattice cranes horizontal luffing:

Horizontal luffing speed of knuckle boom Versus Lattice boom crane with existing requirements.

2

Calculation of horizontal luffing speed Valhall PH crane (55m):

Skarv cranes (knuckle boom 48m) = luffing speed of 0,5 m/s at 30m radius

ACTUAL LUFFING SPEED Valhall PH crane 55m boom Nominal load kg 15 000 Power kW 300 Max. rope speed m/s 2,00 Radius mm 10 000 15 000 20 000 25 000 30 000 35 000 40 000 45 000 50 000 55 000 Boom speed degr./s 2,367 2,023 1,789 1,624 1,503 1,419 1,360 1,326 1,319 1,369 Horizontal speed m/s 2,250 1,890 1,626 1,419 1,248 1,095 0,950 0,802 0,630 0,373

New revision of EN13852-1 expected in 2013 Annex M Excursion envelopes

Legend: A: Excursion envelope for failure mode

analysis (elliptic) (Side- and offlead in 1m significant wave height)

B: Excursion envelope for offshore lift mode (elliptic) (Side- and offlead in 6m significant wave height)

C: Excursion envelope for entanglement situation within the offshore lift mode (Circle radius 50m) (Full capacity end termination may be used if outside radius.)

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AOPS/Gross Overload Conditions (From Supply Boat Entanglement)

API 7th Edition

Considers supply boat entanglement an extremely rare but serious event with special attention required

Equipment damage considered acceptable in this rare catastrophic event

Accomplished through failure mode assessment showing structure holding operators cabin will not be first to fail in any condition

Considers hazards created by AOPS to be worse than the potential benefits

If there is a risk of failure of components during activation of AOPS, e.g. winch motor bursting due to over speeding, the resulting forces shall not exceed significant damage load, and adequate protection shall be provided to prevent harm to personnel due to bursting or ejected parts etc.

When the system is activated, the crane shall maintain a retaining force at the hook sufficient to suspend a load corresponding to the rated capacity for on-board lift. ~=110% SWL

EN 13852-1:2013

Risk for entanglement situations during off-board lifts

Response time EN13852-1:2013

EN13852-1:2004:

3

The maximum response time for the main motions shall be as given in Table 2.

Table 2 Maximum response time

Hoisting Luffing, folding, telescoping Slewing

2 s 3 s 4 s

Table 1 Maximum response time

Hoisting Luffing, folding, telescoping Slewing

2s 2s 2s

EN13852-1:2013:

Questions?

New EN 13852-1 Offshore Cranes Edition 2013New revision of EN13852-1expected in 2013Lysbildenummer 3CEN/TC147 Crane safetyExisting EN13852-1 May 2004 is revised due to:Design requirements revised to be more general for all kind of boom configurations New revision of EN13852-1 expected in 2013, revision time schedule Principle of safety integrationNew revision of EN13852-1 expected in 2013Main draft changes strength and stabilityAmendments 1Amendments 2BAmendments 5 Figure 3 Off-board liftsLysbildenummer 13Lysbildenummer 14New revision of EN13852-1 expected in 2013Some other main changes Static Wire Rope Design FactorsLysbildenummer 17Lysbildenummer 18New EN ISO 13849-1 New revision of EN13852-1 expected in 2013 Main draft changes lifting of persons, 5.105.9.2 Emergency Operation System 1/2Lysbildenummer 22EOS - Emergency Operation System 2/2New revision of EN13852-1 expected in 2013B.4.1 Hoisting and lowering velocityNew revision of EN13852-1 expected in 2013B.4.2 Horiziontal hook velocityHorizontal speedKnuckle boom/lattice cranes horizontal luffing:Lysbildenummer 28New revision of EN13852-1 expected in 2013Annex M Excursion envelopesAOPS/Gross Overload Conditions(From Supply Boat Entanglement)Risk for entanglement situations during off-board lifts Response time EN13852-1:2013Questions?