ICEPIMICEPIM--20152015 NATURALGAS PIPELINENATURAL GAS

ICEPIMICEPIM--20152015

NATURAL GAS PIPELINENATURAL GAS PIPELINENATURAL GAS PIPELINE NATURAL GAS PIPELINE INTEGRITY MANAGEMENT IN INTEGRITY MANAGEMENT IN

INDIAN SCENARIOINDIAN SCENARIO

AUTHOR & PRESENTER CO‐AUTHOR CO‐AUTHOR

RAJNISH BAJAJRAJNISH BAJAJ K. P. SINGHK. P. SINGH G. V. WALIMBEG. V. WALIMBE

DESIGN ENGINEERDESIGN ENGINEER AGMAGM Jt. GMJt. GM

MECON LIMITED A House of Engineering Excellence

MECON LIMITED, DELHIMECON LIMITED, DELHI MECON LIMITED, DELHI MECON LIMITED, DELHI MECON LIMITED, DELHIMECON LIMITED, DELHI

New Delhi13‐14th Mar 20151

CONTENTS

INTRODUCTION

INTEGRITY MANAGEMENT PROGRAM (IMP)

TYPES OF IMPs

ELEMENTS OF INTEGRITY MANAGEMENT SYSTEM (IMS)( )

CLASSIFICATION OF PIPELINE THREATS

INTEGRITY ASSESSMENT TECHNIQUESINTEGRITY ASSESSMENT TECHNIQUES

REGULATORY & CODAL ASPECTS IN INDIA

STATUS OF INTEGRITY MANAGEMENT IN INDIASTATUS OF INTEGRITY MANAGEMENT IN INDIA

ISSUES IN IMPLEMENTATION OF IMP IN INDIA


CONCLUSION

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COMPANY PROFILE

MECON Limited is a premier engineering consultancy

organization under the Ministry of Steel, Govt. of India

4 Strategic Business Units

Metals

Oil & GOil & Gas

Infrastructure

Power


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INTRODUCTION

• Pipelines are the cheapest, safest, reliable & most efficient

way to transport oil & natural gasway to transport oil & natural gas

• Inherent hazards associated with transportation of

hydrocarbons by pipelines such as leaks, etc.

• Ageing issues‐ about 33% of hydrocarbon pipelines in India

have been operating for more than 25 years

• Recent pipeline incidents have emphasized the need forRecent pipeline incidents have emphasized the need for

pipeline integrity management


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INTEGRITY MANAGEMENT PROGRAM (IMP)

IMP symbolizes the concept of failure prevention

I l th t id tifi ti i k i iti ti i diInvolves threat identification, risk prioritization, periodic

assessments & timely mitigation to avoid mishaps

Main objective is to ensure that pipeline is sound & capable

of performing the tasks for which it was designed.

Should not be limited to ageing pipelines

h ld b d d &Should be incorporated in design, construction & operation

stages of pipeline.


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IMP…. (Contd.)

CONSTRUCTIONDESIGN

OPERATION


HEALTHY & SAFE PIPELINE6

BALANCE IN MAINTENANCE MEASURES & FINANCES

The possibility of creating a balance between pipeline

maintenance measures & the resulting finances depends mainly


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on knowledge of the network status

TYPES OF IMPs

• Reduced data requirement• Reduced data requirement• Pre‐determined conditions• Expected worst case indication

Prescriptive Based

indication

• Data intensive • Risk management & risk Performance gassessment based on actual data

Based


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ELEMENTS OF IMS

IMPQuality Control Plan

PerformanceManagement Performance plan

gof Change

Plan

Communication Plan


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CLASSIFICATION OF PIPELINE THREATS

• External corrosion

Time Dependent ThreatsTime Dependent Threats

• External corrosion • Internal corrosion• Stress corrosion cracking

• Manufacturing related defectsWeldin / fabri ation related

Stable ThreatsStable Threats

• Welding/ fabrication related• Equipment related

Time Independent ThreatsTime Independent Threats

• Third party damage• Incorrect operational procedures

Time Independent ThreatsTime Independent Threats


• Weather related & outside force

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INTEGRITY ASSESSMENT TECHNIQUES

In‐line Inspection (ILI)p ( )

Hydro testing

Direct Assessment (DA)

Other Proven Techniques


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IN‐LINE INSPECTION (ILI)

ILI assessment interval should not be more than 10 years


ILI assessment interval should not be more than 10 years

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HYDROTESTING

Hydro test is a method to test pipelines for strength as well

as leakageas leakage

Usually water is used as test medium

In operating pipelines, fluid medium may also be used for

testing pipeline integrity


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Direct Assessment (DA)

Since only about 50% of the pipelines in the world are

conventionally piggable, DA techniques were developed as an

alternative to ILI & pressure testing.

Generally there are 3 types of DA:

External Corrosion Direct Assessment (ECDA)

Internal Corrosion Direct Assessment (ICDA)Internal Corrosion Direct Assessment (ICDA)

Stress Corrosion Cracking Direct Assessment

(SCCDA)


(SCCDA)

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REGULATORY & CODAL ASPECTS IN INDIA

PNGRB Regulation INFRA/IM/NGPL/12010

PNGRB Regulation INFRA/IMP/CGD/1/2013

OISD‐ STD‐226

OISD SOP

ASME B31.8

ASME B31G


ASME B31G

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STATUS OF INTEGRITY MANAGEMENT IN INDIA

Relatively new concept in India

R l ti f I t it M t (IM) l d i lRegulations for Integrity Management (IM) already in place.

However, it is usually a documentary obligation as safety has

no visible returns on the balance sheets.

Currently prescriptive based IM, i.e., not based on actualCurrently prescriptive based IM, i.e., not based on actual

parameters, being practiced.

di l i l d f i h i lIndian regulations rely on ASME codes for various technical

issues


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ISSUES IN IMPLEMENTATION OF IMP IN INDIA

1. Lack of baseline data

2 Role of HCAs2. Role of HCAs

3. Defect Classification

4. Response Time

5 Repair Methods5. Repair Methods

6. Implementation

7. Transition from Prescriptive to Performance based IMP

8. Sample / Model IMP Plan


p

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CONCLUSION

Integrity Management is a relatively new concept in India

IMP is the need of the hour to ensure pipeline safety

IMP helps maintain the right balance between maintenance

measures and resulting finances

There are various issues in implementation of IMP in IndiaThere are various issues in implementation of IMP in India

Operators need to collect adequate baseline data and switch to

performance based IMPs


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Questions??Questions??MECON LIMITED

A House of Engineering Excellence19

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ICEPIMICEPIM--20152015 NATURALGAS PIPELINENATURAL GAS