pre mob checklist

Mobilisation Checklist for

Offshore Survey Operations

IMCA S 016

March 2011

International MarineContractors Association

www.imca-int.com

AB

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 Survey Personnel .................................................................................................................................................... 4

2.2 IMCA Competence Guidelines ........................................................................................................................... 4

2.3 Personnel Comments ........................................................................................................................................ 4

3 HSE .......................................................................................................................... 5

3.1 PPE ............................................................................................................................................................................. 5

3.2 Housekeeping .......................................................................................................................................................... 5

3.3 Safety Procedures, Precautions and Practices ................................................................................................ 5

3.4 HSE Comments ................................................................................................................................................... 5

4 Scope for Minimal Checklist ................................................................................. 6

4.1 Specified Survey Systems ...................................................................................................................................... 6

4.2 Online and Offline Survey Computer Systems ............................................................................................... 6

4.3 Field Background Data .......................................................................................................................................... 6

4.4 Positioning Systems ................................................................................................................................................ 6

4.5 Acoustics .................................................................................................................................................................. 6

4.6 Procedures and Specifications ............................................................................................................................. 6

4.7 Reporting and Charts ............................................................................................................................................ 6

4.8 Scope for Minimal Checklist Comments ...................................................................................................... 6

5 Survey Systems ...................................................................................................... 7

5.1 Online Computer Systems................................................................................................................................... 7

5.2 Offline Computer Systems................................................................................................................................... 7

5.3 Communications ..................................................................................................................................................... 7

5.4 Surface Positioning Systems and Vessel Survey Sensors .............................................................................. 8

5.5 Subsurface Positioning USBL............................................................................................................................ 8

5.6 Subsurface Positioning LBL ............................................................................................................................... 8

5.7 Offsets and GPR Calibrations ............................................................................................................................. 9

5.8 ROV System Sensors Checklist .......................................................................................................................... 9

5.9 Survey System Comments ................................................................................................................................... 9

6 Procedures and Reporting .................................................................................. 10

6.1 Procedures ............................................................................................................................................................ 10

6.2 Log and Record Keeping ................................................................................................................................... 10

6.3 Reporting ............................................................................................................................................................... 10

6.4 Procedures and Reporting Comments ...................................................................................................... 10

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

IMCA S 016 1

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.

2 IMCA S 016

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

UPS Uninterruptible power supply

USBL Ultra-short baseline

VHF Very high frequency

IMCA S 016 3

1 Checklist Details

Date:

Author:

Role or Position:

Employer:

Engaging Company:

Vessel:

Vessel Operator:

Client:

Survey Party Chief:

Survey Procedure:

Survey Scope of

Work (Tasks):

4 IMCA S 016

2 Personnel

Description Yes No Remarks/Signature

2.1 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 Personnel Comments

http://www.imca-int.com/documents/core/ct/docs/IMCAC004.pdf

IMCA S 016 5

3 HSE


3.1 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

6 IMCA S 016

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.


4.1 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 Scope for Minimal Checklist Comments

IMCA S 016 7

5 Survey Systems


5.1 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

8 IMCA S 016


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

IMCA S 016 9


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

10 IMCA S 016

6 Procedures and Reporting


6.1 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 Procedures and Reporting Comments

IMCA S 016 11

7 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

http://www.imca-int.com/documents/core/ct/docs/IMCAC004.pdfhttp://www.imca-int.com/documents/divisions/marine/docs/IMCAM149.pdfhttp://www.imca-int.com/documents/divisions/marine/docs/IMCAM189.pdfhttps://members.imca-int.com/documents/divisions/survey/docs/IMCAS004.pdfhttp://www.imca-int.com/documents/divisions/marine/docs/IMCAM204.pdfhttps://members.imca-int.com/documents/divisions/marine/docs/IMCAM205.pdfhttps://members.imca-int.com/documents/divisions/rov/docs/IMCAR009.pdf

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