1、BRITISH STANDARDBS EN ISO 16708:2006Petroleum and natural gas industries Pipeline transportation systems Reliability-based limit state methodsThe European Standard EN ISO 16708:2006 has the status of a British StandardICS 75.200g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g
2、53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN ISO 16708:2006This British Standard was published under the authority of the Standards Policy and Strategy Committee on 28 April 2006 BSI 2006ISBN 0 580 48156 5Nation
3、al forewordThis British Standard is the official English language version ofEN ISO 16708:2006. It is identical with ISO 16708:2006.The UK participation in its preparation was entrusted by Technical Committee PSE/17, Materials and equipment for petroleum, petrochemical and natural gas industries, to
4、Subcommittee PSE/17/2, Transmission pipelines, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related internationa
5、l and European developments and promulgate them in the UK.A list of organizations represented on this subcommittee can be obtained on request to its secretary.Cross-referencesThe British Standards which implement international or European publications referred to in this document may be found in the
6、 BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online.This publication does not purport to include all the necessary provisions of a contract. Users are responsible fo
7、r its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations.Summary of pagesThis document comprises a front cover, an inside front cover, the EN ISO title page, the EN ISO foreword page, the ISO title page, pages ii to v, a blank page, page
8、s 1 to 57 and a back cover.The BSI copyright notice displayed in this document indicates when the document was last issued.Amendments issued since publicationAmd. No. Date CommentsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 16708April 2006ICS 75.200English VersionPetroleum and natural gas
9、industries - Pipeline transportationsystems - Reliability-based limit state methods (ISO16708:2006)Industries du ptrole et du gaz naturel - Systmes detransport par conduites - Mthodes aux tats-limitesbases sur la fiabilit (ISO 16708:2006)Erdl- und Erdgasindustrie - Rohrleitungstransportsysteme- Zuve
10、rlssigkeitsanalysen (ISO 16708:2006)This European Standard was approved by CEN on 3 March 2006.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-dat
11、e lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the res
12、ponsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Irelan
13、d, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-
14、1050 Brussels 2006 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 16708:2006: EForeword This document (EN ISO 16708:2006) has been prepared by Technical Committee ISO/TC 67 “Materials, equipment and offshore structures for petro
15、leum and natural gas industries“ in collaboration with Technical Committee CEN/TC 12 “Materials, equipment and offshore structures for petroleum, petrochemical and natural gas industries“, the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national stand
16、ard, either by publication of an identical text or by endorsement, at the latest by October 2006, and conflicting national standards shall be withdrawn at the latest by October 2006. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries ar
17、e bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switze
18、rland and United Kingdom. Endorsement notice The text of ISO 16708:2006 has been approved by CEN as EN ISO 16708:2006 without any modifications. EN ISO 16708:2006Reference numberISO 16708:2006(E)INTERNATIONAL STANDARD ISO16708First edition2006-04-01Petroleum and natural gas industries Pipeline trans
19、portation systems Reliability-based limit state methods Industries du ptrole et du gaz naturel Systmes de transport par conduites Mthodes aux tats-limites bases sur la fiabilit EN ISO 16708:2006ii EN ISO 16708:2006iiiContents Page Foreword iv Introduction v 1 Scope . 1 2 Normative references . 1 3 T
20、erms and definitions. 1 4 Symbols and abbreviated terms . 5 4.1 Symbols . 5 4.2 Abbreviated terms 6 5 Principles for design and operation . 7 6 Reliability based limit state methods 9 6.1 General. 9 6.2 Design and operational data basis Data gathering 9 6.3 Safety requirements target 9 6.4 Failure m
21、ode analysis 10 6.5 Uncertainty analysis . 10 6.6 Reliability analysis 11 6.7 Safety and risk assessment. 11 7 Design and operational requirements 12 7.1 General. 12 7.2 Design and construction 12 7.3 Operation and maintenance 12 7.4 Re-qualification . 13 7.5 Hazards 13 8 Acceptance criteria and saf
22、ety classes 13 8.1 Safety requirements . 13 8.2 Classification of limit states 14 8.3 Categorization of fluids 14 8.4 Pipeline location and consequence categorization 15 8.5 Safety classes . 16 9 Target safety levels and risk levels. 17 10 Failure modes 17 10.1 General. 17 10.2 Internal pressure ind
23、uced failure modes . 17 10.3 External pressure induced failure modes 18 10.4 Failure due to external load effects 18 10.5 Failure due to third-party activity 19 10.6 Corrosive environment induced failure modes . 19 10.7 Failure due to combined loads 19 11 Pipeline operational management 20 11.1 Gene
24、ral. 20 11.2 Operational management procedures 20 Annex A (informative) Uncertainty and reliability analysis Method description. 23 Annex B (informative) Statistical database Uncertainty values 43 Annex C (informative) Target safety levels Recommendations 49 Bibliography . 56 EN ISO 16708:2006iv For
25、eword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a tech
26、nical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
27、 electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated t
28、o the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for
29、 identifying any or all such patent rights. ISO 16708 was prepared by Technical Committee ISO/TC 67, Materials, equipment and offshore structures for petroleum, petrochemical and natural gas industries, Subcommittee SC 2, Pipeline transportation systems. vIntroduction The International Standard ISO
30、13623 allows the use of innovative techniques and procedures such as reliability-based limit state methods providing the minimum requirements of ISO 13623 are satisfied. This International Standard provides the supplement to ISO 13623 in giving recommendations and specifying the framework and princi
31、ples for the application of the probabilistic approach, i.e. “reliability-based limit state methods”. Pipeline integrity management during design and operation are performed by the following two limit state approaches: a deterministic approach, with the use of safety or usage factors applied to char
32、acteristic loads and resistances; and a probabilistic approach, based on structural reliability analysis applied to the relevant limit states, e.g. reliability-based limit state methods. Both approaches satisfy the safety requirements; implicitly by the deterministic approach (via earlier-calibrated
33、 safety factors) and explicitly by the probabilistic approach (a direct check on the actual safety level) as illustrated in Figure 1. Significant differences exist among member countries in the areas of public safety and protection of the environment. Within the safety framework of this Internationa
34、l Standard, such differences are allowed for and individual member countries can apply their national requirements for public safety and the protection of the environment to the use of this International Standard. EN ISO 16708:2006blank1Petroleum and natural gas industries Pipeline transportation sy
35、stems Reliability-based limit state methods 1 Scope This International Standard specifies the functional requirements and principles for design, operation and re-qualification of pipelines in the petroleum and natural gas industries using reliability-based limit state methods as permitted by ISO 136
36、23. Reliability-based limit state methods provide a systematic way to predict pipeline safety in design and operation. This International Standard supplements ISO 13623 and can be used in cases where ISO 13623 does not provide specific guidance and where limit states methods can be applied, such as,
37、 but not limited to, qualification of new concepts, e.g. when new technology is applied or for design scenarios where industry experience is limited, re-qualification of the pipeline due to a changed design basis, such as service-life extension, which can include reduced uncertainties due to improve
38、d integrity monitoring and operational experience, collapse under external pressure in deep water, extreme loads, such as seismic loads (e.g. at a fault crossing), ice loads (e.g. by impact from ice keels), situations where strain-based criteria can be appropriate. This document applies to rigid met
39、allic pipelines on-land and offshore used in the petroleum and natural gas industries. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of
40、 the referenced document (including any amendments) applies. ISO 13623:2000, Petroleum and natural gas industries Pipeline transportation systems 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 basic variable load or resistance variable enter
41、ing the limit state function including the variable accounting for model uncertainty in the limit state function itself 3.2 characteristic load nominal value of a load to be used in determination of load effects NOTE Characteristic load is normally based upon a defined fractile in the upper end of t
42、he distribution function of the load. EN ISO 16708:20062 3.3 characteristic resistance nominal value of a strength parameter to be used in determination of capacities NOTE Characteristic resistance is normally based on a defined fractile in the lower end of the distribution function of the resistanc
43、e. 3.4 characteristic value nominal value to characterize the magnitude of a stochastic variable NOTE Characteristic value is normally defined as a fractile of the probability distribution of the variable. 3.5 commissioning activities associated with the initial filling of a pipeline with the fluid
44、to be transported ISO 13623 3.6 construction phase comprising installation, pressure testing and commissioning 3.7 design life period of time selected for the purpose of verifying that a replaceable or permanent component is suitable for the anticipated period of service ISO 13623 3.8 design point m
45、ost probable outcome of the basic variables when failure occurs NOTE The design point is the point on the limit-state surface with the highest probability density. 3.9 design value value to be used in the deterministic design procedure, i.e., characteristic value multiplied by the safety factor 3.10
46、 failure loss of ability of a component or a system to perform its required function 3.11 fluid category categorization of the transported fluid according to hazard potential 3.12 importance factor dimensionless number between zero and one describing the contribution of a random variable to the over
47、all uncertainty 3.13 inspection processes for determining the status of items of the pipeline system or installation and comparing it with the applicable requirements EXAMPLE Inspection can be by measuring, examination, testing, gauging or other methods. EN ISO 16708:200633.14 limit state state beyo
48、nd which the pipeline no longer satisfies the design requirements NOTE Categories of limit states for pipelines include serviceability limit state (SLS) and ultimate limit state (ULS). 3.15 limit-state design structural design where specific limit states relevant for the actual case are explicitly a
49、ddressed NOTE A limit-state design check can be made both using the deterministic approach or using the probabilistic approach where uncertainties are modelled. 3.16 limit state function function of the basic variables, which has negative values when the structure fails and positive values when the structure is safe 3.17 load any action causing deformation, displacement, motion, etc. of the pipeline 3.18 load combination set of loads acting simultaneously 3.19 load effect effect of a single load or load combi
