PR-1522_Procedure_for_Analysis_of_Pipeline_Road_Crossings_Rev.doc

Petroleum Development Oman

UNRESTRICTED October 2002

Document ID: PR-1522 !l!n" #e$: ED%S

Procedure for Analysis of Pipeline Road Crossings Rev 0

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PR-1522

Procedure for Analysis of Pipeline Road Crossings

form by any means (electronic, mechanical, reproraphic recordin or otherwise! without prior written consent of the owner.

Rev 0 (Oct 2002)

PR-1522

Procedure for Analysis of Pipeline Road Crossings

form by any means (electronic, mechanical, reproraphic recordin or otherwise! without prior written consent of the owner.

Rev 0 (Oct 2002)

T)IS P*+E INTENTION*,, .,*N#/

PR-1522

Procedure for Analysis of Pipeline Road Crossings

Authorised for Issue:

"ined# $$$$$$$$$$$ %obert &oulstride 'L ) C*D+ Pipelines

The followin is a brief summary of the  most recent revisions to this document. Details of all revisions  prior to these are held on file by the issuin department. Rev!(!on No/ %ev -

Date

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TTP/0

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ScopeRemar(

New document

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PR-1522

Procedure for Analysis of Pipeline Road Crossings

T)IS P*+E INTENTION*,, .,*N#/

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PR-1522

Procedure for Analysis of Pipeline Road Crossings

Contents 1/

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INTRODUCTION//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// //3

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PR-1522

Procedure for Analysis of Pipeline Road Crossings

T)IS P*+E INTENTION*,, .,*N#/

Rev 0 (Oct 2002)

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PR-1522

1.

Introduction

1.1

Background

Procedure for Analysis of Pipeline Road Crossings

The passae of a vehicle over a buried pipeline will result in additional stress on the  pipeline. The international pipeline desin codes reconise this and specific calculation methods and allowable stress criteria are established to avoid the possibility of failure under this condition. 6n eneral a pipeline will euires a specialist pipeline enineerin bac=round to ensure that it is used properly, and that its results are interpreted correctly. 'L/0 has historically provided this service, althouh the pipeline LD"C (Local Desin "ervice Contractor! and other locally established Pipeline desin consultants reistered under CC.470- (Desin Pipelines! are also authorised to run the  proram. The ma@ority of proposed pipeline crossins are satisfactory. 6n an attempt to improve the response time to >ueries on proposed new crossins, a number of eneric curves have been produced which are intended to be used by non)pipeline specialists for initial screenin of crossin locations of oil pipelines desined to 1N"6 &0.7 and 3as Pipelines desined to 1N"6 &0.5. *or multiphase lines, the as pipelines curves shall  be used. 6f the curves indicate the proposed crossin is satisfactory then no further action is re>uired. 6f the curve indicates a potential difficulty then the issue should be referred to 'L/0 or directly to the Pipelines LD"C for further action. Printin of the raphs shall be done in colour in order to avoid mista=es in D/t curve selection.

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PR-1522

1.2

Procedure for Analysis of Pipeline Road Crossings

Purpose The purpose of this procedure is to describe the process to be followed in the assessment of a vehicle in e