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ASME B31.8S-2020
M00050438
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ASME B31.8S-2020 Managing System Integrity of Gas Pipelines
standard by ASME International, 06/21/2021
Full Description
ASME's B31.8S Managing System Integrity of Gas Pipelines covers on-shore, gas pipeline systems constructed with ferrous materials, including pipe, valves, appurtenances attached to pipe, compressor units, metering stations, regulator stations, delivery stations, holders and fabricated assemblies. Its principles, processes and approaches apply to the entire system for all pipeline systems.
B31.8S is specifically designed to provide the operator with the information necessary to develop and implement an effective integrity management program utilizing proven industry practices and processes. Effective system management can decrease repair and replacement costs, prevent malfunctions, and minimize system downtime.
Key changes to this version include updates to the potential impact area requirements section and non-mandatory appendix A.
Intended for manufacturers, users, constructors, designers, and others concerned with the design, fabrication, assembly, erection, examination, inspection, and testing of piping, plus all potential governing entities.
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Managing System Integrity of Gas Pipelines
ASME Code for Pressure Piping, B31 Supplement to ASME B31.8
AN INTERNA TIONAL PIPING C ODE ®
ASME B31.8S-2020
(Revision of ASME B31.8S-2018)
ASME B31.8S-2020
(Revision of ASME B31.8S-2018)
Managing
System Integrity of Gas Pipelines
ASME Code for Pressure Piping, B31 Supplement to ASME B31.8
AN INTERNATIONAL PIPING CODE®
Two Park Avenue • New York, NY • 10016 USA
Date of Issuance: June 21, 2021
The next edition of this Code is scheduled for publication in 2022.
ASME issues written replies to inquiries concerning interpretations of technical aspects of this Code. Interpretations are published on the Committee web page and under https://go.asme.org/Interpretations. Periodically certain actions of the ASME B31 Committee may be published as Cases. Cases are published on the ASME website under the B31 Committee Page at https://go.asme.org/B31committee as they are issued.
Errata to codes and standards may be posted on the ASME website under the Committee Pages of the associated codes and standards to provide corrections to incorrectly published items, or to correct typographical or grammatical errors in codes and standards. Such errata shall be used on the date posted.
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This international code or standard was developed under procedures accredited as meeting the criteria for American National Standards and it is an American National Standard. The Standards Committee that approved the code or standard was balanced to assure that individuals from competentand concerned interestshave had an opportunity to participate. The proposed code or standard was made available for public review and comment that provides an opportunity for additional public input from industry, academia, regulatory agencies, and the public-at- large.
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ASME does not take any position with respect to the validity of any patent rights asserted in connection with any items mentioned in this document, and does not undertake to insure anyone utilizing a standard against liability for infringement of any applicable letters patent, nor assume any such liability. Users of a code or standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, is entirely their own responsibility.
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without the prior written permission of the publisher.
The American Society of Mechanical Engineers Two Park Avenue, New York, NY 10016-5990
Copyright © 2021 by
THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS
All rights reserved Printed in U.S.A.
CONTENTS
Foreword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Committee Roster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Correspondence With the B31 Committee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Summary of Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | v vi ix xi | |
1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 1 | |
2 Integrity Management Program Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 2 | |
3 Consequences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 7 | |
4 Gathering, Reviewing, and Integrating Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 9 | |
5 Risk Assessment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 12 | |
6 Integrity Assessment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 17 | |
7 Responses to Integrity Assessments and Mitigation (Repair and Prevention) . . . . . . . . . | 21 | |
8 Integrity Management Plan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 28 | |
9 Performance Plan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 29 | |
10 Communications Plan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 34 | |
11 Management of Change Plan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 34 | |
12 Quality Control Plan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 35 | |
13 Terms, Definitions, and Acronyms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 36 | |
14 References and Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 42 | |
Nonmandatory Appendices | ||
A | Threat Process Charts and Prescriptive Integrity Management Plans . . . . . . . . . . . . . . . . . . . | 45 |
B | Direct Assessment Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 63 |
C | Preparation of Technical Inquiries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 64 |
Figures | ||
2.1-1 | Integrity Management Program Elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 3 |
2.1-2 | Integrity Management Plan Process Flow Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 4 |
3.2.4-1 | Potential Impact Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 9 |
7.2.1-1 | Timing for Scheduled Responses: Time-Dependent Threats, Prescriptive Integrity Management Plan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 26 |
13-1 | Hierarchy of Terminology for Integrity Assessment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 36 |
A-2.1-1 | Integrity Management Plan, External Corrosion Threat (Simplified Process: Prescriptive) . . . . | 46 |
A-3.1-1 | Integrity Management Plan, Internal Corrosion Threat (Simplified Process: Prescriptive) . . . . | 48 |
A-5.1-1 | Integrity Management Plan, Manufacturing Threat (Pipe Seam and Pipe; Simplified Process: Prescriptive) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 52 |
A-6.1-1 | Integrity Management Plan, Construction Threat (Pipe Girth Weld, Fabrication Weld, Wrinkle Bend or Buckle, Stripped Threads/Broken Pipe/Coupling; Simplified Process: Prescriptive) . . . . | 54 |
A-7.1-1 | Integrity Management Plan, Equipment Threat (Gasket and O-Ring, Control/Relief, Seal/Pump Packing; Simplified Process: Prescriptive) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 56 |
A-8.1-1 | Integrity Management Plan, Third-Party Damage Threat [Third-Party Inflicted Damage (Immediate), Vandalism, Previously Damaged Pipe; Simplified Process: Prescriptive] . . . . . | 58 |
A-9.1-1 | Integrity Management Plan, Incorrect Operations Threat (Simplified Process: Prescriptive) . . | 60 |
A-10.1-1 | Integrity Management Plan, Weather-Related and Outside-Force Threat (Earth Movement, Heavy Rains or Floods, Cold Weather, Lightning; Simplified Process: Prescriptive) . . . . . . . . . . . . | 61 |
Tables | ||
4.2.1-1 | Data Elements for Prescriptive Pipeline Integrity Program . . . . . . . . . . . . . . . . . . . . . . . . . . | 10 |
4.3-1 | Typical Data Sources for Pipeline Integrity Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 11 |
5.6.1-1 | Integrity Assessment Intervals: Time-Dependent Threats, Internal and External Corrosion, Prescriptive Integrity Management Plan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 14 |
7.1-1 | Acceptable Threat Prevention and Repair Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 23 |
8.3.4-1 | Example of Integrity Management Plan for Hypothetical Pipeline Segment (Segment Data: Line 1, Segment 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 30 |
8.3.4-2 | Example of Integrity Management Plan for Hypothetical Pipeline Segment (Integrity Assessment Plan: Line 1, Segment 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 30 |
8.3.4-3 | Example of Integrity Management Plan for Hypothetical Pipeline Segment (Mitigation Plan: Line 1, Segment 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 31 |
9.2.3-1 | Performance Measures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 32 |
9.4-1 | Performance Metrics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 33 |
9.4-2 | Overall Performance Measures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 34 |
A-4.4-1 | SCC Crack Severity Criteria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 51 |
A-4.4.1-1 | Actions Following Discovery of SCC During Excavation . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 51 |
FOREWORD
Pipeline system operators continuously work to improve the safety of their systems and operations. In the United States, both liquid and gas pipeline operators have been working with their regulators for several years to develop a more systematic approach to pipeline safety integrity management.
The gas pipeline industry needed to address many technical concerns before an integrity management standard could be written. A number of initiatives were undertaken by the industry to answer these questions; as a result of two years of intensive work by a number of technical experts in their fields, 21 reports were issued that provided the responses required to complete the 2001 edition of this Code. (The list of these reports is included in the reference section of this Code.)
This Code is nonmandatory and is designed to supplement ASME B31.8, Gas Transmission and Distribution Piping Systems. Not all operators or countries will decide to implement this Code. This Code becomes mandatory if and when pipeline regulators include it as a requirement in their regulations.
This Code is a process code that describes the process an operator may use to develop an integrity management program. It also provides two approaches for developing an integrity management program: a prescriptive approach and a performance- or risk-based approach. Pipeline operators in a number of countries are currently using risk-based or risk-management principles to improve the safety of their systems. Some of the international standards issued on this subject were used as resources for writing this Code. Particular recognition is given to API and their liquids integrity management standard, API RP 1160, which was used as a model for the format of this Code.
The intent of this Code is to provide a systematic, comprehensive, and integrated approach to managing the safety and integrity of pipeline systems. The task force that developed this Code hopes that it has achieved that intent.
The 2020 Edition of the Supplement is a compilation of the 2018 Edition and the revisions that have occurred since the issuance of the 2018 Edition. ASME B31.8S-2020 was approved by the American National Standards Institute on September 1, 2020.
ASME B31 COMMITTEE
Code for Pressure Piping
(The following is the roster of the Committee at the time of approval of this Code.)
STANDARDS COMMITTEE OFFICERS
H. Eskridge, Jr., Chair
K. A. Vilminot, Vice Chair
J. Oh, Secretary
STANDARDS COMMITTEE PERSONNEL
D. Anderson, TransCanada
R. J. Appleby, Consultant
K. C. Bodenhamer, TRC Pipeline Services
R. Bojarczuk, Retired
M. R. Braz, MRBraz and Associates, PLLC
M. Burkhart, The Burkhart Group, Inc.
R. D. Campbell, Bechtel
J. S. Chin, TC Energy
D. D. Christian, Victaulic
R. P. Deubler, Becht Engineering Co., Inc.
D. Diehl, Retired
M. Engelkemier, Cargill
H. Eskridge, Jr., Worley ECR
J. Fetzner, BP Exploration (Alaska), Inc.
D. R. Frikken, Becht Engineering Co., Inc.
R. A. Grichuk, S&B Engineers and Constructors, Ltd.
R. W. Haupt, Pressure Piping Engineering Associates, Inc.
G. A. Jolly, Samshin, Ltd.
K. B. Kaplan, Consultant
C. Kolovich, Quest Integrity
W. J. Mauro, Consultant
J. E. Meyer, CDM Smith — Industrial Division
T. Monday, Team Industries, Inc.
J. Oh, The American Society of Mechanical Engineers
D. W. Rahoi, Consultant
R. Reamey, Turner Industries Group, LLC
M. J. Rosenfeld, RSI Pipeline Solutions, LLC
J. T. Schmitz, Southwest Gas Corp.
S. K. Sinha, Lucius Pitkin, Inc.
W. J. Sperko, Sperko Engineering Services, Inc.
F. W. Tatar, FM Global
K. A. Vilminot, Commonwealth Associates, Inc.
P. Flenner, Contributing Member, Flenner Engineering Services
M. Nayyar, Contributing Member, NICE
B31.8 EXECUTIVE COMMITTEE
D. D. Anderson, Chair, TransCanada
P. D. Stumpf, Secretary, The American Society of Mechanical Engineers
R. J. Appleby, Consultant
K. B. Kaplan, Consultant
K. G. Leewis, Leewis and Associates, Inc.
M. T. Reed, TC Energy
V. Romero, Southern California Gas Co.
M. J. Rosenfeld, RSI Pipeline Solutions, LLC
B31.8 GAS TRANSMISSION AND DISTRIBUTION PIPING SYSTEMS SECTION COMMITTEE
D. D. Anderson, Chair, TransCanada
M. J. Rosenfeld, Vice Chair, RSI Pipeline Solutions, LLC
P. D. Stumpf, Secretary, The American Society of Mechanical Engineers
R. J. Appleby, Consultant
B. W. Bingham, T. D. Williamson, Inc.
P. M. Dickenson, Elk Petroleum
S. A. Frehse, Southwest Gas Corp.
R. W. Gailing, Consultant
M. W. Gragg, ExxonMobil Development Co.
D. W. Haim, EnSiteUSA
M. E. Hovis, Energy Transfer
K. B. Kaplan, Consultant
M. Kieba, U.S. DOT — PHMSA
R. W. Kivela, Consultant
K. G. Leewis, Leewis and Associates, Inc.
K. Moore, Trout Hydrodynamics, Inc.
K. Newton, Southern California Gas Co.
G. E. Ortega, Ventura Global LNG
M. T. Reed, TC Energy
E. J. Robichaux II, Atmos Energy Corp.
R. A. Schmidt, Canadoil
L. C. Thronson, Tecorp International, PLLC
H. Tiwari, TechnipFMC
F. R. Volgstadt, Volgstadt and Associates, Inc.
W. J. Walsh, EN Engineering
D. W. Wright, Wright Tech Services, LLC
C. A. Bullock, Contributing Member, Integrity Solutions, Ltd.
J. S. Chin, Contributing Member, TC Energy
A. M. Clarke, Contributing Member, Consultant
D. J. Fetzner, Contributing Member, BP Exploration (Alaska), Inc.
R. D. Huriaux, Contributing Member, Richard D. Huriaux, PE LLC
M. D. Huston, Contributing Member, Oneok Partners, LP
M. P. Lamontagne, Contributing Member, Lamontagne Pipeline Assessment Corp.
M. J. Mechlowicz, Contributing Member, Southern California Gas Co.
J. K. Wilson, Contributing Member, G2 Integrated Solutions
J. Zhou, Contributing Member, TransCanada Pipelines, Ltd.
B31.8 SUBGROUP ON DESIGN, MATERIALS, AND CONSTRUCTION
M. J. Rosenfeld, Chair, RSI Pipeline Solutions, LLC
K. B. Kaplan, Vice Chair, Consultant
W. J. Walsh, Secretary, EN Engineering
Akmal, Southern California Gas Co.
Albers, Fluor
R. J. Appleby, Consultant
B. W. Bingham, T. D. Williamson, Inc.
D. Chairez, Consultant
J. S. Chin, TC Energy
A. M. Clarke, Consultant
D. C. D’Eletto, National Grid
P. M. Dickinson, Elk Petroleum
A. Esmaeili, APA Group
D. J. Fetzner, BP Exploration (Alaska), Inc.
S. A. Frehse, Southwest Gas Corp.
R. W. Gailing, Consultant
D. W. Haim, EnSiteUSA
M. Kieba, U.S. DOT — PHMSA
J. Mauritz, WeldFit
E. K. Newton, Southern California Gas Co.
G. E. Ortega, Venture Global LNG
E. J. Robichaux II, Atmos Energy Corp.
R. A. Schmidt, Canadoil
L. C. Thronson, Tecorp International, PLLC
H. Tiwari, TechnipFMC
F. R. Volgstadt, Volgstadt and Associates, Inc.
J. Zhou, TransCanada Pipelines, Ltd.
H. M. Al-Muslim Contributing Member, Saudi Aramco
M. A. Boring, Contributing Member, DNV GL
J. W. Fee, Contributing Member, Consultant
R. D. Huriaux, Contributing Member, Richard D. Huriaux, LLC
M. D. Huston, Contributing Member, Oneok Partners, LP
M. J. Mechlowicz, Contributing Member, Southern California Gas Co.
B31.8 SUBGROUP ON DISTRIBUTION
V. Romero, Chair, Southern California Gas Co.
B. Tansey, Secretary, American Gas Association
D. Chairez, Consultant
J. Elder, Atmos Energy Corp.
S. A. Frehse, Southwest Gas Corp.
M. Kieba, U.S. DOT — PHMSA
E. K. Newton, Southern California Gas Co.
J. Robichaux II, Atmos Energy
R. Volgstadt, Volgstadt and Associates, Inc.
M. J. Mechlowicz, Contributing Member, Southern California Gas Co.
B31.8 SUBGROUP ON EDITORIAL REVIEW
K. G. Leewis, Chair, Leewis and Associates, Inc.
K. B. Kaplan, Vice Chair, Consultant
C. Maier, Secretary, TC Energy
R. W. Gailing, Consultant
D. W. Haim, EnSiteUSA
B31.8 SUBGROUP ON OFFSHORE PIPELINES
K. B. Kaplan, Chair, Consultant
R. J. Appleby, Consultant
R. Dotson, ROSEN USA, Inc.
K. K. Emeaba, National Transportation Safety Board
M. W. Gragg, ExxonMobil Production Co.
H. Tiwari, TechnipFMC
B31.8 SUBGROUP ON OPERATION AND MAINTENANCE
M. T. Reed, Chair, TC Energy
M. E. Hovis, Vice Chair, Energy Transfer
R. W. Kivela, Secretary, Consultant
D. D. Anderson, TransCanada
R. Dotson, ROSEN USA, Inc.
K. K. Emeaba, National Transportation Safety Board
E. Kostelka, Enable Midstream Partners
M. P. Lamontagne, Lamontagne Pipeline Assessment Corp.
K. G. Leewis, Leewis and Associates, Inc.
Maier, TC Energy
K. Moore, Trout Hydrodynamics, Inc.
V. Romero, Southern California Gas Co.
D. Spillers, U.S. DOT
D. W. Wright, Wright Tech Services, LLC
A. Bhatia, Contributing Member, Det Norske Veritas (Canada), Ltd.
A. Bullock, Contributing Member, Integrity Solutions, Ltd.
R. Thornton, Contributing Member, The Equity Engineering Group
J. K. Wilson, Contributing Member, G2 Integrated Solutions