pr-1002 - operations excavation procedure

Petroleum Development Oman L.L.C.

Document Title: Excavation Certificate

Document ID PR-1002

Document Type Procedure

Security Unrestricted

Discipline Operations and Engineering

Owner Functional Operations Manager - UOP

Issue Date January 2012

Revision 6.0 (IA0913-01)

Petroleum Development Oman LLC Revision: 6.0Effective Jan-12

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PR-1002 - Excavation Certificate Printed 10/01/12

The controlled version of this CMF Document resides online in Livelink®. Printed copies are UNCONTROLLED.

Copyright: This document is the property of Petroleum Development Oman, LLC. Neither the whole nor any part of this document may be disclosed to others or reproduced, stored in a retrieval system, or transmitted in any form by any means (electronic, mechanical, reprographic recording or otherwise) without prior written consent of the owner.


i Document AuthorisationAuthorised For Issue – January 2012




ii Revision HistoryThe following is a brief summary of the 4 most recent revisions to this document. Details of all revisions prior to these are held on file by the issuing department.

Revision No. Date Author Scope / Remarks

6.0 Jan-12 Robin Norman UOP6/ Dell Ellbec UOP7

Full review by Custodian. Main change inclusion of Omanatel/Nawras as External Party

5.0 Aug-10 Robin Norman UOP6 Full review and revalidation. Changed Custodian to UOP7. Added 3.1.6 Confined Space Entry

4.1 May-09 Robin Norman UOP6 Minor changes to Section 2.3 - deletion of “White Original”

4.0 May-07 UEV11 Reformat & General Review

1.0 Dec-98 BOT/5 SI-20 Rewritten on new format, close out PDOTRACK action item 12.2.3.1B (Dec. 97)

iii Related Business Processes

Code Business Process (EPBM 4.0)

EP.72 Maintain and Assure Facilities Integrity

iv Related Corporate Management Frame Work (CMF) Documents

The related CMF Documents can be retrieved from the CMF Business Control Portal.

CP-114 Maintenance and Integrity Management CoP

CP-115 Operate Surface Product Flow Assets CoPPR-1172 Permit to Work System

SP-1279 Specification for Civil & Building Construction – Excavation & Earthworks




TABLE OF CONTENTS

1 Introduction....................................................................................................................... 6

1.1 Background................................................................................................................. 6

1.2 Purpose....................................................................................................................... 6

1.3 Distribution / Target Audience......................................................................................6

1.4 Changes to the Document............................................................................................6

1.5 Step-out Approval........................................................................................................6

2 Roles and Responsibilities.................................................................................................7

3 Excavation Certificate Process..........................................................................................9

3.1 Precautions to be Observed when Carrying Out Excavation Work................................9

3.1.1 Detection of Buried Services...................................................................................9

3.1.2 Mechanical Digging.................................................................................................9

3.1.3 Heavy Machinery Excavation..................................................................................9

3.1.4 Rock Breaking.......................................................................................................10

3.1.5 Vehicle Movements...............................................................................................10

3.1.6 Confined Space Entry...........................................................................................10

3.1.7 Shoring Excavations..............................................................................................10

3.2 Excavation Certificate................................................................................................10

3.3 Excavation Certificate Process...................................................................................11

Appendix 1 – Excavation Certificate........................................................................................14

Appendix 2 – Abbreviations....................................................................................................16

Appendix 3 - User Feedback Page.........................................................................................17

Interim Ammendment IA0613-01............................................................................................18

Interim Ammendment IA0913-01............................................................................................19




1 Introduction

1.1 BackgroundIn compliance with the Permit to Work system requirements excavation and earth work undertaken in a ‘process’ and ‘hydrocarbon’ area shall only be permitted on completion and approval of an Excavation Certificate.

NOTE: Excavation work on a ‘green field site’ where it can be demonstrated that underground services are not present may not require an Excavation Certificate to be completed. However this should be Risk Assessed. The Risk Assessment may identify additional controls that require to be put in place.

1.2 PurposeThe purpose of this procedure is to provide a consistent method for undertaking excavation and earth works where underground services are or maybe present i.e. within process and hydrocarbon areas, to ensure compliance to the PTW system requirements and safeguard asset integrity and personnel safety.

1.3 Distribution / Target AudienceThis procedure shall be referenced by the Responsible Supervisors, Area Authorities, Permit Applicants, Permit Holders and Contract personnel undertaking excavation and earth moving works.

1.4 Changes to the DocumentResponsibility for the upkeep of the Document shall be with the Functional Production Manager UOP, the Owner. Changes to this document shall only be authorised and approved by the Owner.

Users of the Document who identify inaccuracy or ambiguity can notify the Custodian or his/her delegate and request changes be initiated. The Requests shall be forwarded to the Custodian using the “User Feedback Page” provided in this Document.

The Document Owner and the Document Custodian should ensure review and re-verification of this procedure every 3 years.

1.5 Step-out ApprovalThis procedure is mandatory and shall be complied with at all times. Should compliance with the procedure be considered inappropriate or the intended activity cannot be effectively completed or safely performed, then step out authorisation and approval must be obtained in accordance with PR-1001e – Operations Procedure Temporary Variance, prior to any changes or activities associated with the procedure being carried out.

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2 Roles and Responsibilities

Role ResponsibilityProduction Coordinator Accountable for all works undertaken within his / her area

of control

Knowledge of the Procedure

Responsible Supervisor / Production Supervisor

Knowledge of the Procedure

Review and ensure that the Excavation Certificate details are correct and authorise its application

Inspect work site with Permit Applicant when required to ensure proposed hazard /precautions are adequately identified

Ensure ‘As-Built’ drawings are available and marked up to identify all buried services

NOTE: This may include drawings for Omantel / Nawras underground services within the area

Check the Job Safety Plan and Method Statement are complete for work being undertaken

Area Authority Knowledge of the Procedure

Validate the PTW and ensure the Excavation Certificate is correctly completed and attached to the Permit

Ensure that all safety equipment is available

Ensure TRIC talk has been conducted and TRIC card is completed

Perform and / or check any isolations that are required prior to works being carried out

Perform frequent audits and safety checks and ensure PTW system is complied with

Permit Applicant Complete Excavation Certificate

Ensure ‘As-Built’ drawings are available for ‘underground services

NOTE: This may include drawings for Omantel underground services within the area

Carryout site visit with Responsible Supervisor ensure proposed hazard /precautions are adequately identified

Prepare Job Safety Plan and Method Statement

Obtain authorisation for the Excavation Certificate.Permit Holder Sign for acceptance of the Excavation certificate

Conduct the TRIC talk and complete the TRIC

Ensure that the Job Safety Plan, the method Statement and TRIC are adhere to during the execution of the work

If the conditions or the risks of the work change reassess the job and suspend if considered necessary.




Role ResponsibilityDepartment Supervisor(s) Review Excavation Certificate

Endorse the Excavation Certificate

Cross check (to best knowledge) accuracy of As-Built drawings for underground services, including those of other external parties such as Omantel / Nawras

Add comment and / or precautions to be observed when carrying out the excavation work




3 Excavation Certificate Process

3.1 Precautions to be Observed when Carrying Out Excavation Work

3.1.1 Detection of Buried ServicesCable and metal detection equipment and hand digging (no-metallic piping) shall be used in conjunction with the As-Built drawings to confirm / locate buried services prior to any mechanical excavations or when crossing a line.

If As-Built drawings are not available all initial line tracing will be done by hand excavation and the route clearly indentified.

IMPORTANT: The non-presence of underground pipework should not be assumed even outside the perimeter fencing. Consideration must also be given to external partes e.g Omantel / Nawras

3.1.2 Mechanical DiggingFor excavation that requires to be carried out by mechanical digging and where the proposed route is adjacent to existing lines or services, then the closest existing pipe / service shall be exposed by hand digging every three (3) meters to confirm its alignment below ground.

NOTE: Hand digging is permitted right up to existing lines, but care should be exercised when using pick axes.

3.1.3 Heavy Machinery Excavation‘Heavy Machinery Excavation’ shall be defined as those excavations by which the removal of loose rock and rubble is carried out by remotely operated electric, hydraulic or pneumatic equipment such as a JCB front end loader with a rear mechanical excavator or an articulated front end loader used to transfer material from the excavation to the dumper truck.

Where ‘heavy machinery excavation’ be required, the proposed site or route shall be checked by the Permit Holder prior to the commencement of work. The following will be adhered to;

‘Heavy machinery excavation’ work may only carried out up to one (1) meter either side of live flowlines and shall employ a banksman during all operations. On no account shall permission be given for such excavation to proceed at a distance less than one (1) meter from a live line.

If ‘heavy machinery excavation’ is essential at a distance less than one (1) meter from an existing live line then it shall be necessary to ensure that the line is isolated and depressurised prior to the commencement of work. Heavy machinery excavation work may than proceed to within 0.5 meter of a depressurised line.

A full documented Risk Assessment shall be completed to support the activity.




3.1.4 Rock BreakingThe breaking of hard rock by means of a rock breaker or hand held pneumatic tool1

may proceed to within 1 meter of a live line or 0.5 meter of a depressurised line provided that the tool bit is visible at all times and not allow it to become submerged in rubble.

WARNING: BLASTING SHALL NOT BE PERMITTED.Whilst removing rock any soft areas encountered should be checked to confirm that there is not another services trench crossing the route of the trench being excavated.

3.1.5 Vehicle MovementsAll heavy vehicles, such as crane, excavator or dumper truck, must have a banksman to guide the driver while the vehicle is being manoeuvred within 3 meters of any lines, services or excavations.

All heavy vehicles must have a banksman to guide the driver while the vehicle is being reversed anywhere within the plant, construction or excavation area.

3.1.6 Confined Space EntryAll proposed excavations shall be Risk Assessed for the requirement of a Confined Space Entry Certificate. As a minimum a Confined Space Entry Certificate shall be required where the excavation is deeper that 1.5m.

3.1.7 Shoring ExcavationsThe excavation Contractor may carryout the excavation to a maximum depth of 1.2 m without any shoring protection. If the excavation exceeds this depth then it shall be undertaken in accordance with SP-1279 - Specification for Civil & Building Construction – Excavation & Earthworks C2.5.6 – Shoring Excavations.

3.2 Excavation CertificateThe Excavation Certificate is completed by the Permit Applicant who shall be responsible for ensuring all signatures are obtained before it is submitted to the Responsible Supervisor for Authorisation.

The ‘Original’ shall be attached to the PTW with all ‘As-Built’ drawings.

NOTE: A copy of the certificate and the ‘As-Built’ drawings may be retailened if considered necessary by the Responsible Supervisor.

The Permit Holder shall sign to accept the Excavation Certificate. The Permit Holder MUST ensure he / she understand completely the nature of the work and all precautions and requirements to undertake the work before he / she accepts and signs the certificate.

1 Pneumatic tools may include ‘jack hammers’ PR-1002 - Excavation Certificate Printed 10/01/12





3.3 Excavation Certificate ProcessThe following process shall be followed when preparing the excavation certificate.




1. The Permit Applicant shall raise the Excavation Certificate and complete the required Sections. The numbers of all associated Permits shall be included. As-Built drawings of the area with regards to systems both underground and above ground shall be attached to the Excavation Certificate and written details of all underground services in vicinity of the excavations (Section 3).

NOTE: Excavation work where Heavy Equipment is to be used will require a fully documented Risk Assessment

The completed Excavation Certificate and As-Built drawings will be submitted to the Responsible Supervisor for review.

2. The Responsible Supervisor shall review the Excavation Certificate and conduct an inspection of the site with the Permit Applicant. During the inspection all hazards and area of importance shall be identified and recorded.

3. Following the site visit and based on the review of the Excavation Certificate the Responsible Supervisor will nominate the Departments that require to be consulted with regards to the work. These departments may be one or all of the following;

Telecommunications;

Electrical;

Instrumentation and;

Pipelines.

4. The Permit Applicant shall prepare the Excavation Certificate and all As-Built drawings, and distribute for review.

NOTE: Excavation work where Heavy Equipment is to be used will require a fully documented Risk Assessment

5. The nominated departments representatives shall review the Excavation Certificate and the attached As-Built drawings and supply remarks, conditions and observations where applicable.

NOTE: Remarks etc, that cannot be incorporated on the Excavation Certificate shall be clearly marked and attached to the Certificate.

Each department representative that has commented shall sign and date the certificate (Section 4) before returning to the Production Supervisor.

6. In Section 5 of the Excavation Certificate the Responsible Supervisor will indicate from the list which precautions require to be observed / implemented to carry out the work. There is space provided to add precautions not included in the standard list. Based on the Risk Assessment findings a Confined Space Entry Certificate will / may be required to be completed.

If a ‘Banksman’ is required the check box MUST be checked. .

7. The Responsible Supervisor shall discuss the Excavation Certificate with the Permit Applicant and the Permit Holder to ensure that they understand all recommendation and requirements before authorising the Excavation Certificate.

When authorising the Excavation Certificate the responsible Supervisor shall add an expiry date which must not be later that that of the PTW.

8. The Permit Holder shall sign for Acceptance of the Excavation Certificate.

9. The Permit Holder shall nominate a ‘Bankman’ and ensure that he understands his roles and responsibilities..




10. The Permit Holder shall hold a TRIC discussion and complete a Toolbox Talk Risk Identification Card (TRIC).

The Area Authority will have awareness of the work being undertaken and review the Excavation Certificate to familiarise with the precautions required.

11. The Area Authority shall validate the PTW and ensure that the Excavation Certificate and As-Built drawings are attached..

12. The excavation work will be carried out in accordance with the Job Safety Plan, Method Statement and TRIC. The Permit Holder shall oversee the work and ensure that all precautions stated on the Excavation Certificate are adhered to.

NOTE: If the job changes the TRIC should be revisited.

13. On completion of the excavation work the Area Authority and the Permit Holder shall inspect that the site is safe and clean.

The PTW shall be closed out and archived. The Excavation Certificate shall be retained with the archived PTW.




Appendix 1 – Excavation Certificate

Move the cursor over the image of the form and use Ctrl – Click to open the link to the Master Form



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Appendix 2 – Abbreviations

The following abbreviations are used in this Procedure.

PTW Permit to Work

TRIC Toolbox Talk Risk Identification Card




Appendix 3 - User Feedback Page

PR-1002 – Excavation Certificate User Feedback Page

Any user who identifies an inaccuracy, error or ambiguity is requested to notify the custodian so that appropriate action can be taken. The user is requested to return this page fully completed, indicating precisely the amendment(s) recommended.

Name:

Ref ID Date:

Page Ref: Brief Description of Change Required and Reasons

Surface Operations and Integrity Team Leader (Custodian) Date:




Interim Amendment IA0613-01

The following amendment has been requested following the HSE Level 1 Audit to address ACTION ID: 681011:

Short description: Conduct a comprehensive analysis to ensure that proposed standards are applicable for major accident.

A specific bullet which can be actioned is:

Excavations without shoring with no evidence of assessments of soil conditions and was not a requirement in the excavation procedure (i.e. one excavation observed which the soil condition was sandy)

Upon investigation, PDO does have a standard which specifies the shoring requirements (SP-1279). However, this standard is not referenced in PR-1002 ‘Operations Excavation Procedure’. Please will you update PR-1002 to include the link to SP-1279.

To address this request the following has been added to the Procedure.

3.1.7 Shoring ExcavationsThe excavation Contractor may carryout the excavation to a maximum depth of 1.2 m without any shoring protection. If the excavation exceeds this depth then it shall be undertaken in accordance with SP-1279 - Specification for Civil & Building Construction – Excavation & Earthworks C2.5.6 – Shoring Excavations.

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Interim Amendment IA0913-01

An Interim Amendment has been added to PR-1002 and shall be fully incorporated into the document at the next scheduled review.

The Following minor changes have been made to the procedure.

Section 3.3 Excavation Certificate Process

Added Geomatics to the list of disciplines

Section 3.2 This section has been changed to remove all reference to ‘Yellow’ and ‘Green’ copies of the Excavation Certificate. The Certificate is now stored on LiveLink and can be obtained using the link in the document.

