1、BSI Standards PublicationBS EN ISO 19905-1:2016Petroleum and natural gasindustries Site-specificassessment of mobile offshoreunitsPart 1: Jack-ups (ISO 19905-1:2016)BS EN ISO 19905-1:2016 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO19905-1:2016. It supers
2、edes BS EN ISO 19905-1:2012 which iswithdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee B/525/12, Design of offshore structures.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to incl
3、ude all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2016. Published by BSI StandardsLimited 2016ISBN 978 0 580 89173 1ICS 75.180.10Compliance with a British Standard cannot confer immunity fromlegal obligations.This Briti
4、sh Standard was published under the authority of theStandards Policy and Strategy Committee on 29 February 2016.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORMEN ISO 19905-1 February 2016 ICS 75.180.10 Supersedes EN ISO 19905-1:2012English Versi
5、on Petroleum and natural gas industries - Site-specific assessment of mobile offshore units - Part 1: Jack-ups (ISO 19905-1:2016) Industries du ptrole et du gaz naturel - valuation spcifique au site dunits mobiles en mer - Partie 1: Plates-formes auto-lvatrices (ISO 19905-1:2016) Erdl- und Erdgasind
6、ustrie - Beurteilung von mobilen Offshore Einheiten bezglich ihres Einsatzgebietes - Teil 1: Hubinseln (ISO 19905-1:2016) This European Standard was approved by CEN on 2 January 2016. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving
7、this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three officia
8、l versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Au
9、stria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Swe
10、den, Switzerland, Turkey andUnited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for CE
11、N national Members. Ref. No. EN ISO 19905-1:2016 EBS EN ISO 19905-1:2016EN ISO 19905-1:2016 (E) 3 European Foreword This document (EN ISO 19905-1:2016) has been prepared by Technical Committee ISO/TC 67 “Materials, equipment and offshore structures for petroleum, petrochemical and natural gas indust
12、ries“ 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 standard, either by publication o
13、f an identical text or by endorsement, at the latest by August 2016, and conflicting national standards shall be withdrawn at the latest by August 2016. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not
14、be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 19905-1:2012. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgari
15、a, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turke
16、y and the United Kingdom. Endorsement notice The text of ISO 19905-1:2016 has been approved by CEN as EN ISO 19905-1:2016 without any modification. BS EN ISO 19905-1:2016ISO 19905-1:2016(E) ISO 2016 All rights reserved iiiContents Page Foreword v Introduction . vii 1 Scope 1 2 Normative references .
17、 2 3 Terms and definitions 2 4.1 Symbols 134 Symbols and abbreviated terms . 13 4.2 Abbreviated terms 155 Overall considerations 165.1 General . 165.2 Assessment approach 165.3 Selection of limit states . 195.4 Determination of assessment situations . 205.5 Exposure levels 215.6 Analytical tools 256
18、 Data to assemble for each site . 256.1 Applicability 256.2 Jack-up data 256.3 Site and operational data 256.4 Metocean data 266.5 Geophysical and geotechnical data . 276.6 Earthquake data 277 Actions 277.1 Applicability 277.2 General . 287.3 Metocean actions . 287.4 Functional actions . 297.5 Displ
19、acement dependent effects 297.6 Dynamic effects 297.7 Earthquakes 297.8 Other actions 298 Structural modelling 308.1 Applicability 308.2 Overall considerations 308.3 Modelling the leg . 318.4 Modelling the hull . 318.5 Modelling the leg-to-hull connection 328.6 Modelling the spudcan and foundation .
20、 328.7 Mass modelling 338.8 Application of actions 349 Foundations 379.1 Applicability 379.2 General . 379.3 Geotechnical analysis of independent leg foundations 379.4 Other considerations . 41 BS EN ISO 19905-1:2016ISO 19905-1:2016(E) iv ISO 2016 All rights reserved10 Structural response 43 10.2 Ge
21、neral considerations 4310.1 Applicability 43 10.3 Types of analyses and associated methods . 4310.4 Common parameters 4410.5 Storm analysis 4610.6 Fatigue analysis 4810.7 Earthquake analysis . 4810.8 Accidental situations 4910.9 Alternative analysis methods 4911 Long-term applications 5011.1 Applica
22、bility 5011.2 Assessment data . 5011.3 Special requirements . 5111.4 Survey requirements 5112 Structural strength 5212.1 Applicability 5212.2 Classification of member cross-sections 5312.3 Section properties of non-circular prismatic members 5412.4 Effects of axial force on bending moment 5512.5 Str
23、ength of tubular members 5512.6 Strength of non-circular prismatic members . 5512.7 Assessment of joints . 5513 Acceptance criteria . 5513.1 Applicability 5513.2 General formulation of the assessment check . 5613.3 Leg strength assessment . 5713.4 Spudcan strength assessment 5713.5 Holding system st
24、rength assessment 5713.6 Hull elevation assessment 5813.7 Leg length reserve assessment 5813.8 Overturning stability assessment 5813.9 Foundation integrity assessment . 5913.10 Interaction with adjacent infrastructure . 6013.11 Temperatures . 60Annex A (informative) Additional information and guidan
25、ce 61 Annex B (normative) Summary of partial action and partial resistance factors . 249 Annex C (informative) Additional information on structural modelling and response analysis . 251 Annex D (informative) Foundations Recommendations for the acquisition of site-specific geotechnical data 261 Annex
26、 E (informative) Foundations Additional information and alternative approaches . 267 Annex F (informative) Informative annex on Clause A.12 Structural strength . 280 Annex G (informative) Contents list for typical site-specific assessment report . 295 Annex H (informative) Regional information 302 B
27、ibliography 311 BS EN ISO 19905-1:2016ISO 19905-1:2016(E) ISO 2016 All rights reserved vForeword 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
28、through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and nongovernmental, in liaison with ISO, also take part in the work. ISO colla
29、borates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approv
30、al criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives). Attention is drawn to the possibility that some of the elements of this document may be the su
31、bject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents). Any tr
32、ade name used in this document is information given for the convenience of users and does not constitute an endorsement. For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the
33、Technical upplementary informationBarriers to Trade (TBT) see the following URL: Foreword S The committee responsible for this document is ISO/TC 67, Materials, equipment and offshore structures for petroleum, petrochemical and natural gas industries, Subcommittee SC 7, Offshore structures. 1:2012),
34、 which has been technically revised. This second edition cancels and replaces the first edition (ISO 19905ISO 19905 consists of the following parts, under the general title Petroleum and natural gas industries Site-specific assessment of mobile offshore units: Part 1: Jack-ups Part 2: Jack-ups comme
35、ntary and detailed sample cThe following parts are under preparation: alculation Technical Report Part 3: Floating units ISO 19905 is one of a series of International Standards for offshore structures. The full series comprises the following: and natural gas industries General requirements for offsh
36、ore structures ISO 19900, Petroleum ISO 19901 (all parts), Petroleum and natural gas industries Specific requirements for offshore structures BS EN ISO 19905-1:2016ISO 19905-1:2016(E) vi ISO 2016 All rights reserved Petroleum and natural gas industries Fixed steel offshore structures ISO 19902, trol
37、eum and natural gas industries Fixed concrete offshore structures ISO 19903, Pe ISO 199041, Petroleum and natural gas industries Floating offshore structures Part 1: Monohulls, semi-pars submersibles and s ISO/TR 199052, Petroleum and natural gas industries Site-specific assessment of mobile offshor
38、e units ry and detailed sample calculation Part 2: Jack-ups commenta ISO 199053, Petroleum and natural gas industries Site-specific assessment of mobile offshore units Part 3: ts Floating uni ISO 19906, Petroleum and natural gas industries Arctic offshore structures BS EN ISO 19905-1:2016ISO 19905-1
39、:2016(E) ISO 2016 All rights reserved viiIntroduction The series of International Standards applicable to types of offshore structure, ISO 19900 to ISO 19906, addresses design requirements and assessments for all offshore structures used by the petroleum and natural gas industries worldwide. Through
40、 their application, the intention is to achieve reliability levels appropriate for manned and unmanned offshore structures, whatever the type of structure and the nature or combination of the materials used. It is important to recognize that structural integrity is an overall concept comprising mode
41、ls for describing actions, structural analyses, design or assessment rules, safety elements, workmanship, quality control procedures and national requirements, all of which are mutually dependent. The modification of one aspect of design or assessment in isolation can disturb the balance of reliabil
42、ity inherent in the overall concept or structural system. The implications involved in modifications, therefore, need to be considered in relation to the overall reliability of offshore structural systems. The series of International Standards applicable to types of offshore structure is intended to
43、 provide a wide latitude in the choice of structural configurations, materials and techniques, without hindering innovation. Sound tengineering judgement is therefore necessary in the use of hese International Standards. This part of ISO 19905, which has been developed from the Society of Naval Arch
44、itects and Marine Engineers (SNAME) Technical it is intended to be used for assessment and not for design. NOTE For the exposure level 1(L1) assessment and, where appropriate, the exposure level 2 (L2) assessment prior to evacuation being effected, this part of ISO 19905 requires the use of 50 year
45、independent or 100 year joint probability metocean extremes, together with associated partial action factors. It is based on extensive benchmarking and best practice in the international community. Sitespecific assessment is normally carried out when an existing jackup unit is to be installed at a s
46、pecific site. The assessment is not intended to provide a full evaluation of the jackup; it assumes that aspects not addressed herein have been addressed using other practices and standards at the design stage. In some instances, the original design of all or part of the structure could be in accord
47、ance with other standards in the ISO 19900 series, if and in some cases, d ferent practices or standards could have been applied. The purpose of the site assessment is to demonstrate the adequacy of the jackup and its foundations for the assessment situations and defined limit states, taking into ac
48、count the consequences of failure. It is important that the results of a sitespecific assessment be appropriately recorded and communicated to those persons required to know or act on the conclusions and recommendations. Alternative approaches to the sitespecific assessment can be used, provided tha
49、t they have been shown to give a level of structural reliability equivalent, or superior, to that implicit in this part of ISO 19905. Annex A provides background to and guidance on the use of this part of ISO 19905. The clause numbering in Annex A is the same as in the normative text in order to facilitate crossreferencing. ISO/TR 199052 provides additional background to some clauses and a detailed sample goby calculation. Annex B summarizes the partial factors. Supplementary informati
