Spoolbase processl

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OPERATIONS BRIEFING

For

Onshore Spoolbase Fabrication

Pipeline Technique Ltd Ref: OSSB-001

Created: December 2006


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Ref: OSSB-001 Rev 1

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This document has been produced with the intention to show how the process of Spoolbase

Fabrication takes place.

The facility and equipment shown was originally mobilised to cater for Helix Energy Solutions(ESG) 2006 Reeled Pipelines 2006 Campaign.

The facility was located at the port of Hartlepool in the UK, and was initially in production during

the 3rd

and 4th

quarters of 2006.

1. On completion and acceptance of the pipe joint inspection,the pipe is relocated along the ready racks into the productionline front end for preparation and inclusion into the pipe stalk

production line.

2. Factory bevelled pipes will be cleaned using a powered wirebrush or re-bevelled to comply with the project WPS. Square

cut end supplied pipe will be bevelled in accordance with the

approved WPS. If any bevel is considered outside of the

acceptable limits after inspection it will be re-bevelled in

accordance with the approved WPS.

3. In some cases, a factory supplied bevel could be considereddamaged beyond effective repair. The pipe joint would be

removed from the ready rack and therefore not inserted into

the production line.

4. The QC Discipline Inspector shall verify the following priorto releasing the joint into the production line.

The pipe bevels are in accordance with the approved project

WPS.

Identify the joints unique identification number and record

acceptance of the joint into the PTS Mainline Welding

Inspection Report (MWSR).

5. All mainline production welding activities take place on theSpoolbase production line under the control of the Welding

Foreman in cooperation with the QC Supervisor and QCDiscipline Inspector to ensure that WPS requirements are

adhered to.


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Ref: OSSB-001 Rev 1

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6. Mainline production welding verification activities include:Welding consumables type, batch/lot number and size

Pipe alignment, fit-up and clamping

Minimum preheat

All welding passes

7. During mainline production welding the QC DisciplineInspector shall carry out the inspections in accordance with

the project ITP to ensure the requirements of the approved

project WPS are adhered to. Typical inspection activities are

as follows:Alignment fit up and clamping

Preheat and inter-pass temperatures (and gas purge level

where applicable in the range of the approved WPS)

Travel speed and heat input

Verification of welder identity number, stalk/weld number,

WPS number, pipe joint number

On completion of the first (root bead) pass and the initial

check by the welder(s), visually inspect the partially

completed joint. Any remedial work identified at this point

shall be immediately re-worked by the welder(s) per pre-

approved procedures and shall be re-inspected

Following acceptance of first pass welding, prior to and

during subsequent welding monitor inter-pass temperature

On completion of the welded joint and the initial check by

the welder(s), visually inspect the completed joint

The initial check, visual inspection and any required

remedial work identified at this point must be completed

whilst the joint remains above the minimum pre-heat

temperature of the accepted WPS

QC Discipline inspector shall complete the information on

the MWSR in accordance with the ITP.

8. The PTL or QC Discipline Inspector shall carry out awelding audit on the production line. The frequency of theaudit shall be stipulated in the ITP, but as minimum it shall

be carried out at least once during each shift verifying detail

on the MWSR.


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Ref: OSSB-001 Rev 1

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9. All mainline production welds shall be subjected to 100%on line NDE in accordance wit the approved project

supplied procedures.

10. All NDE reports shall be signed and approved by theevaluating NDE Technician and PTL or QC NDE

representative. At the end of each shift the original NDE

documentation for the production shift shall be submitted by

the NDE supervisor to the Spoolbase QC Supervisor for

review.

11. Field Joint Coating sub-contractor activities shall be carriedout in accordance with approved project procedures. Field

Joint Coating Supervisor shall report to the Spoolbase

Assistant Manager / Superintendent.

12. If required by the project, Pipe stalks will be marked withpaint at each weld location using 2 high stencils. The

relevant stalk number and weld number will be marked on

the pipe at 2 locations 180 degrees apart on each side of the

joint. Numbers will be marked prior to completion of field

joint coating.

Any sacrificial or non-permanent pipe strings (i.e.

straightening trial, Lead & Tail Strings) shall be uncoated.

These pipe sections will not be included as part of the

permanent pipeline.

13. The completed pipe string (stalk) will then be lifted from theoutbound rollers, to the stalk rack to await Vessel

Mobilisation.

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Spoolbase processl