Pre Mob Checklist

AB Mobilisation Checklist for Offshore Survey Operations

International Marine Contractors Association

www.imca-int.com

IMCA S 016 March 2011

AB

The International Marine Contractors Association (IMCA) is the international trade association representing offshore, marine and underwater engineering companies. IMCA promotes improvements in quality, health, safety, environmental and technical standards through the publication of information notes, codes of practice and by other appropriate means. Members are self-regulating through the adoption of IMCA guidelines as appropriate. They commit to act as responsible members by following relevant guidelines and being willing to be audited against compliance with them by their clients. There are two core activities that relate to all members:  Competence & Training  Safety, Environment & Legislation The Association is organised through four distinct divisions, each covering a specific area of members’ interests: Diving, Marine, Offshore Survey, Remote Systems & ROV. There are also five regional sections which facilitate work on issues affecting members in their local geographic area – Asia-Pacific, Central & North America, Europe & Africa, Middle East & India and South America.

IMCA S 016

www.imca-int.com/survey

The information contained herein is given for guidance only and endeavours to reflect best industry practice. For the avoidance of doubt no legal liability shall attach to any guidance and/or recommendation and/or statement herein contained. © 2011 IMCA – International Marine Contractors Association

Mobilisation Checklist for Offshore Survey Operations IMCA S 016 – March 2011

Introduction ................................................................................................................... 1 Aim .................................................................................................................................................................................... 1 Framework ............................................................................................................................................................................ 1 Glossary ................................................................................................................................................................................. 2

1

Checklist Details .................................................................................................... 3

2

Personnel ................................................................................................................ 4 2.1 2.2 2.3

3

HSE.......................................................................................................................... 5 3.1 3.2 3.3 3.4

4

Online Computer Systems................................................................................................................................... 7 Offline Computer Systems................................................................................................................................... 7 Communications ..................................................................................................................................................... 7 Surface Positioning Systems and Vessel Survey Sensors .............................................................................. 8 Subsurface Positioning – USBL............................................................................................................................ 8 Subsurface Positioning – LBL ............................................................................................................................... 8 Offsets and GPR Calibrations ............................................................................................................................. 9 ROV System Sensors Checklist .......................................................................................................................... 9 Survey System Comments ................................................................................................................................... 9

Procedures and Reporting .................................................................................. 10 6.1 6.2 6.3 6.4

7

Specified Survey Systems ...................................................................................................................................... 6 Online and Offline Survey Computer Systems ............................................................................................... 6 Field Background Data .......................................................................................................................................... 6 Positioning Systems ................................................................................................................................................ 6 Acoustics .................................................................................................................................................................. 6 Procedures and Specifications ............................................................................................................................. 6 Reporting and Charts ............................................................................................................................................ 6 Scope for Minimal Checklist – Comments ...................................................................................................... 6

Survey Systems ...................................................................................................... 7 5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.8 5.9

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PPE ............................................................................................................................................................................. 5 Housekeeping .......................................................................................................................................................... 5 Safety Procedures, Precautions and Practices ................................................................................................ 5 HSE – Comments ................................................................................................................................................... 5

Scope for Minimal Checklist ................................................................................. 6 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8

5

Survey Personnel .................................................................................................................................................... 4 IMCA Competence Guidelines ........................................................................................................................... 4 Personnel – Comments ........................................................................................................................................ 4

Procedures ............................................................................................................................................................ 10 Log and Record Keeping ................................................................................................................................... 10 Reporting ............................................................................................................................................................... 10 Procedures and Reporting – Comments ...................................................................................................... 10

References and Further Reading........................................................................ 11

Introduction Aim This document is a mobilisation checklist for offshore survey operations, for example, a pipeline survey by an ROV. Survey contractors, ROV contractors, pipeline installation contractors and clients have a variety of in-house checklists. This document seeks to provide a standard framework for such a checklist. The intent is that it can be used by the contractors themselves and presented to a client or used by the client acting separately. In both cases it seeks to improve efficiency: 

It should act as a prompt to ensure the equipment, personnel and procedures are fit for purpose, able to do the work and ready to deliver the contemplated operation to the satisfaction of all parties;



It should act as a catalyst towards a ‘no surprises situation’. Surprises usually mean delays in mobilisation which can be expensive for all parties;



It should help to deliver safe and efficient operations.

Framework The document provides a framework to build either a brief or detailed mobilisation checklist for survey support operations. The document could be expanded to cover any offshore survey operation; the extent of the checklist developed depends on the complexity of the survey operations which could include: 

Pipeline/subsea architecture condition surveys;



Pipeline/subsea architecture post installation surveys;



Pipeline/subsea architecture installation support observations (and installation/construction support).

For specific LBL acoustic and INS operations additional information may be required to reflect specific technical requirements and survey specifications. The person completing the checklist may require access to the complete scope of work, survey specification, tolerances and procedural documentation required by the survey team to perform the tasks required. The comments sections – 2.3, 3.4, 4.8, 5.9 and 6.4 – can be used for additional comments or observations not covered by the checklists.

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Glossary CD

Compact disc

CTD

Conductivity, temperature and depth

DPO

Dynamic positioning system operator

DVD

Digital versatile disc

GPR

Ground penetrating radar

HSE

Health & Safety Executive (UK)

INS

Inertial navigation system

LBL

Long baseline

MRU

Motion reference unit

PPE

Personal protective equipment

QC

Quality control

ROV

Remotely operated vehicle

SIMOPS Simultaneous operations

2

UPS

Uninterruptible power supply

USBL

Ultra-short baseline

VHF

Very high frequency

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Checklist Details Date:

Author:

Role or Position:

Employer:

Engaging Company:

Vessel:

Vessel Operator:

Client:

Survey Party Chief:

Survey Procedure:

Survey Scope of Work (Tasks):

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2

Personnel

Description 2.1

Yes

No

Remarks/Signature

Survey Personnel

Is there sufficient survey crew onboard to perform the survey tasks according to project procedures and specifications Are all survey crew trained and familiarised with the onboard survey operation Is the experience level of the survey crew sufficient to meet the job requirements 2.2

IMCA Competence Guidelines

Is there an appropriate way for personnel to demonstrate competence, for example, a company scheme based upon the IMCA competence guidelines (IMCA C 004 – Guidance document and competence tables: Offshore Survey Division) 2.3

4

Personnel – Comments

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HSE

Description 3.1

Yes

No

Remarks/Signature

PPE

Is PPE appropriate, available and worn by survey crew as a matter of practice 3.2

Housekeeping – is the general housekeeping in good order

At online and offline survey stations At survey stores and spares Are all standard templates (e.g. survey/ dive log) onboard 3.3

Safety Procedures, Precautions and Practices

Is there existing evidence that risk assessments are being actively undertaken as a normal practice by the survey team Is there existing evidence that toolbox talks are being actively undertaken as a normal practice by the survey team Have all survey crew been given a vessel and project induction Are the survey crew aware of the electrical isolation procedure and process used onboard Are adequate and appropriate precautions taken when working at height (e.g. installing antennas on mast) Do the survey crew carry out manual handling assessments where relevant Does the survey crew participate in incident reporting and investigations Are the survey crew familiar with the permit-to-work system and any site standards 3.4

HSE – Comments

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4

Scope for Minimal Checklist

Where only a minimal checklist is required, the HSE section (section 3) can be completed and the following technical items checked. Any technical concerns should be discussed between the survey party chief and the relevant client representatives and appropriate sections of the more detailed checklists in sections 5 and 6 completed where relevant. Description 4.1

Yes

No

Remarks/Signature

Specified Survey Systems

Are all survey systems installed, interfaced and calibrated Is the accuracy of the survey instrumentation onboard sufficient to meet the project specifications Is all hardware and software, including sufficient spares, onboard to perform the scope of work 4.2

Online and Offline Survey Computer Systems

Are online and offline survey computer systems installed and operational 4.3

Field Background Data

Are field background data as well as any proposed route(s) confirmed to be latest version 4.4

Positioning Systems

Are surface positioning systems checked/calibrated 4.5

Acoustics

Is there an acoustic management plan in place covering any issues such as seabed array planning, SIMOPS 4.6

Procedures and Specifications

Are survey procedures and specifications in place and are survey crew briefed 4.7

Reporting and Charts

Are survey reporting requirements, digital data delivery and chart formats agreed 4.8

6

Scope for Minimal Checklist – Comments

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Survey Systems

Description 5.1

Yes

No

Remarks/Signature

Online Computer Systems

Latest software updates and licenses installed and tested Data logging and (digital) video recording set up and tested Latest field background and proposed route(s) available Helmsman displays and spare computer systems and monitors available Runline computations tested Geodetic parameters checked Peripheral equipment such as printer/ copier/scanner with consumables available and functional Clean power supply available and functional UPS systems tested All equipment and cables secure Job parameters stored and hard copies filed 5.2

Offline Computer Systems

Latest software updates and licenses installed and tested Spare computer systems and monitors and storage devices available Printer copier/scanner, plotter, tape drive, etc. available with consumables (cartridges, CD/DVDs, tapes, etc.) Example deliverables available for approval Data storage and backup facilities function tested 5.3

Communications

Communication protocol and emergency response understood Full duplex communication system operational for survey/bridge/ROV, etc. Helmsman displays set up for bridge/ DPO/ROV, etc. VHF communications operational (e.g. bridge/deck/ROV/survey) Telephone installed and working at survey desk Data telemetry to/from other vessel, if required

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Description

Yes

No

Remarks/Signature

Video telemetry to/from other vessel, if required 5.4

Surface Positioning Systems and Vessel Survey Sensors

Surface positioning systems fully functional and operating per specifications Antenna/dome locations checked for masking and multipath effects Antenna offsets measured and checked Interfacing to online system tested Positioning comparisons and QC checks performed Most recent installation and health check reports available onboard (dates) 5.5

Subsurface Positioning – USBL

USBL system meets project specifications Transponders (/responder(s)) and charger checked Code frequency management in place Depth rating of transponders suitable USBL hydrophone XYZ offsets measured and checked Most recent installation and calibration report available onboard (date) Transponder deployment method evaluated and approved GPR sensor(s) interfaced to USBL system Full calibration required or position check only 5.6

Subsurface Positioning – LBL

LBL system meets the project specifications Array layouts agreed/as per survey procedure Depth rating transponders and collars suitable for working area Transponder deployment method evaluated and approved LBL system function tested, including interface to vessel survey sensors Transponder status checked and correctly configured (e.g. battery status, code settings, etc.) Anodes, shackles, collars, roping, etc. checked on transponders LBL software and calibration package tested and interfaced to online system 8

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Description

Yes

No

Remarks/Signature

LBL installation aids (e.g. frames/gravel bags/rope/shackles/acoustic/hydrostatic releases) onboard 5.7

Offsets and GPR Calibrations

Vessel/ROV/structure sensor XYZ offsets measured and checked Vessel/ROV/structure gyro calibrations completed and comparisons logged Latitude and speed settings for gyros correct Ongoing daily gyrocompass comparisons planned and documented Gyros and MRUs operational and with valid calibrations All XYZ vessel/ROV/structure offsets and corrections entered and verified in the online computer systems 5.8

ROV System Sensors Checklist – ROV system/sensors interfaced/checked (include additional systems/sensors as required); tick off as appropriate



Altimeter



Depth sensor



Swathe profilers/multi-beam



Doppler velocity log



INS



Sound velocity meter



Gyro, pitch, roll sensor



Current meter



Pipe/cable tracker



Video overlay

  Depth rating ROV survey sensors suitable for working area Calibration certificates valid for depth sensors and sound velocity/CTD probes 5.9

Survey System Comments

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6

Procedures and Reporting

Description 6.1

Yes

No

Remarks/Signature

Procedures

Relevant procedures and drawings available to survey team Equipment operating procedures and manuals available Management of change system in place and understood All survey team briefed and aware of work scope Target and route coordinated available and checked 6.2

Log and Record Keeping

Detailed survey log maintained All results independently checked and signed Filing system set up for results and calibrations Mobilisation and calibration report prepared 6.3

Reporting

Project reporting requirements understood Chart formats and content agreed Provisional reporting and chart schedule for checking/review 6.4

10

Procedures and Reporting – Comments

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References and Further Reading



IMCA C 004 – Guidance document and competence tables: Offshore Survey Division



IMCA M 149 – Common Marine Inspection Document



IMCA M 189/IMCA S 004 – Marine inspection checklist for small workboats



IMCA M 204 – Vessel assurance



IMCA M 205 – Guidance on operational communications



IMCA R 009 – ROV mobilisation

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