EN ISO 10438-4-2007 en Petroleum petrochemical and natural gas industries - Lubrication shaft-sealing and control-oil systems and auxiliaries - Part 4 Self-acting gas seal support .pdf

1、BRITISH STANDARDBS EN ISO 10438-4:2007Petroleum, petrochemical and natural gas industries Lubrication, shaft-sealing and control-oil systems and auxiliaries Part 4: Self-acting gas seal support systemsThe European Standard EN ISO 10438-4:2007 has the status of a British StandardICS 75.180.20g49g50g3

2、g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN ISO 10438-4:2007This British Standard was published under the authority of the Standards Policy and St

3、rategy Committee on 31 January 2008 BSI 2008ISBN 978 0 580 54489 7National forewordThis British Standard is the UK implementation of EN ISO 10438-4:2007. It supersedes BS EN ISO 10438-4:2003 which is withdrawn.The UK participation in its preparation was entrusted by Technical Committee PSE/17, Mater

4、ials and equipment for petroleum, petrochemical and natural gas industries, to Panel PSE/17/-/6, Processing equipment and systems for petroleum and natural gas industries.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purpo

5、rt to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.Amendments/corrigenda issued since publicationDate CommentsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN IS

6、O 10438-4December 2007ICS 75.180.20 Supersedes EN ISO 10438-4:2003 English VersionPetroleum, petrochemical and natural gas industries -Lubrication, shaft-sealing and control-oil systems and auxiliaries- Part 4: Self-acting gas seal support systems (ISO 10438-4:2007)Industries du ptrole, de la ptroch

7、imie et du gaz naturel -Systmes de lubrification, systmes dtanchit, systmesdhuile de rgulation et leurs auxiliaires - Partie 4:Systmes de soutien pour les tanchits au gaz auto-actionnes (ISO 10438-4:2007)Erdl-, petrochemische und Erdgasindustrie - Schmierl-,Sperrl- und Regellversorgungsanlagen und H

8、ilfsanlagen- Teil 4: Sperrgasversorgungsanlagen (ISO 10438-4:2007)This European Standard was approved by CEN on 14 December 2007.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

9、 without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other langu

10、age made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,F

11、rance, Germany, Greece, Hungary, Iceland, Ireland, 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

12、NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2007 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 10438-4:2007: EForeword This document (EN ISO 10438-4:2007) has been prepared by Technical Committee ISO/TC 67 “Ma

13、terials, equipment and offshore structures for petroleum 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 St

14、andard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by June 2008, and conflicting national standards shall be withdrawn at the latest by June 2008. Attention is drawn to the possibility that some of the elements of this

15、 document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 10438-4:2003. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countr

16、ies are bound to implement this European Standard: Austria, Belgium, Bulgaria, 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

17、, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 10438-4:2007 has been approved by CEN as a EN ISO 10438-4:2007 without any modification. BS EN ISO 10438-4:2007Reference numberISO 10438-4:2007(E)INTERNATIONAL STANDARD ISO10438-4Second edition2007-12-15Petroleum, petro

18、chemical and natural gas industries Lubrication, shaft-sealing and control-oil systems and auxiliaries Part 4: Self-acting gas seal support systems Industries du ptrole, de la ptrochimie et du gaz naturel Systmes de lubrification, systmes dtanchit, systmes dhuile de rgulation et leurs auxiliaires Pa

19、rtie 4: Systmes de soutien pour les tanchits au gaz auto-actionnes BS EN ISO 10438-4:2007ii iiiContents Page Foreword iv Introduction v 1 Scope . 1 2 Normative references . 1 3 Terms, abbreviated terms and definitions . 1 4 General. 2 4.1 System selection. 2 4.2 Basic design 2 4.3 Gas filters 4 4.4

20、Transfer valves 4 4.5 Condensate traps 4 5 Piping and tubing 5 6 Instrumentation, control and electrical systems. 5 6.1 General. 5 6.2 Alarms and shutdowns 5 6.3 Instrumentation. 6 7 Inspection, testing and preparation for shipment. 7 7.1 General. 7 7.2 Inspection 7 7.3 Testing . 7 7.4 Preparation f

21、or shipment . 8 8 Vendors Data 8 8.1 Proposal. 8 8.2 Spare parts 8 Annex A (informative) Datasheets 9 Annex B (informative) Piping and instrument diagrams 10 Annex C (informative) Inspectors checklist 25 Annex D (informative) Dry-gas-seal connection terminology and configurations 27 Bibliography . 3

22、0 BS EN ISO 10438-4:2007iv Foreword 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

23、 in a subject for which a technical 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 Comm

24、ission (IEC) on all matters of 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 technic

25、al committees are circulated to 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 sha

26、ll not be held responsible for identifying any or all such patent rights. ISO 10438-4 was prepared by Technical Committee ISO/TC 67, Materials, equipment and offshore structures for petroleum, petrochemical and natural gas industries, Subcommittee SC 6, Processing equipment and systems. This second

27、edition cancels and replaces the first edition (ISO 10438-4:2003), which has been technically revised. ISO 10438 consists of the following parts, under the general title Petroleum, petrochemical and natural gas industries Lubrication, shaft-sealing and control-oil systems and auxiliaries: Part 1: Ge

28、neral requirements Part 2: Special-purpose oil systems Part 3: General-purpose oil systems Part 4: Self-acting gas seal support systems BS EN ISO 10438-4:2007vIntroduction This International Standard was developed jointly with API 614, 5th edition. ISO 10438 is divided into four parts corresponding

29、to the four chapters of API 614. Users of this part of ISO 10438 should be aware that further or differing requirements might be needed for individual applications. This part of ISO 10438 is not intended to inhibit a vendor from offering, or the purchaser from accepting, alternative equipment or eng

30、ineering solutions for the individual application. This may be particularly appropriate where there is innovative or developing technology. Where an alternative is offered, the vendor should identify any variations from this part of ISO 10438 and provide details. It is intended that this part of ISO

31、 10438 be used in conjunction with 10438-1. This part of ISO 10438 requires the purchaser to specify certain details and features. A bullet () at the beginning of a clause or subclause indicates that either a decision is required or further information is to be provided by the purchaser. This inform

32、ation or decision should be indicated on the datasheet(s); otherwise it should be stated in the quotation request or in the order. In this International Standard, US customary (USC) units are included in brackets for information. BS EN ISO 10438-4:2007blank1Petroleum, petrochemical and natural gas i

33、ndustries Lubrication, shaft-sealing and control-oil systems and auxiliaries Part 4: Self-acting gas seal support systems 1 Scope This part of ISO 10438 in conjunction with ISO 10438-1 specifies requirements for support systems for self-acting gas seals (dry gas seals), for example as described in I

34、SO 10439 and ISO 10440-1. These systems can serve equipment such as compressors, gears, pumps and drivers. NOTE For the purposes of this statement of scope, API 617 is equivalent to ISO 10439 and API 619 is equivalent to ISO 10440-1. 2 Normative references The following referenced documents are indi

35、spensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 10438-1:2007, Petroleum, petrochemical and natural gas industries Lubrication, shaft-sea

36、ling and control-oil systems and auxiliaries Part 1: General requirements ISO 15649, Petroleum and natural gas industries Piping API RP 520, Sizing, Selection, and Installation of Pressure-Relieving Devices in Refineries Part I: Sizing and Selection API RP 520, Sizing, Selection, and Installation of

37、 Pressure-Relieving Devices in Refineries Part II: Installation API 526, Flanged Steel Pressure Relief Valves ANSI/ASME B31.3, Process Piping 3 Terms, abbreviated terms and definitions For the purposes of this document, the terms, abbreviated terms and definitions given in ISO 10438-1 apply. BS EN I

38、SO 10438-4:20072 4 General 4.1 System selection Datasheets for system specifications are provided in Annex A. Annex B provides schemas of typical system components and diagrams of typical, complete dry gas seal support systems and modules. These schemas and diagrams illustrate the general philosophy

39、 and requirements of this part of ISO 10438 and are included to assist the purchaser in the selection of an appropriate system. The purchaser and the vendor shall mutually agree upon an acceptable system. Annex C provides an inspector checklist of typical items reviewed by the purchaser. 4.2 Basic d

40、esign 4.2.1 The equipment (including auxiliaries) covered by this part of ISO 10438 shall be designed and constructed for a minimum service life of 20 years and at least 5 years of uninterrupted operation. NOTE It is recognized that this is a design criterion. z 4.2.2 If specified, the purchaser may

41、 specify the vendor responsible for each portion of the design, scope of supply, installation and performance of the dry gas seal system. If the purchaser is not the end user, then the end user shall approve the vendors specified. z 4.2.3 The purchaser shall specify the equipments normal operating p

42、oint and all other operating points. Other parameters required for the design of the seal support system, such as gas composition, maximum and minimum flare pressure, maximum and minimum sealing pressure and settle-out pressure shall also be specified. 4.2.4 Unless otherwise specified, the lube-oil

43、console and the dry gas seal module shall be mounted on separate skids. 4.2.5 The dry gas seal system shall be designed to serve the full range of equipment operating conditions specified. These conditions may include but are not limited to the following: a) settle-out pressures; b) process relief-v

44、alve settings; c) shop test and field run-ins; d) start-up conditions; e) gas composition. NOTE This requires a detailed system review with the equipment suppliers, purchaser and owner, and is normally finalized at the coordination meeting. 4.2.6 Control systems shall provide adequate gas velocity a

45、cross the labyrinths at all clearances, including minimum labyrinth clearance to twice the maximum design labyrinth clearance to prevent migration of contaminents from the process gas. NOTE In a flow-control system, velocity across the labyrinths decreases as clearances increase. 4.2.7 All gas strea

46、ms (including alternate, backup, start-up sources) into the seal shall be provided at a temperature of at least 20 K (35 R) above their dew point in order to preclude the possibility of liquid entering the dry gas seal. BS EN ISO 10438-4:20073NOTE 1 On some systems, the discharge temperature of the

47、compressor gas stream might not provide this dew-point margin. NOTE 2 In some cases, this can require heaters and/or heat tracing by the owner. The dew-point margin shall be maintained throughout the seal and not just at the supply connections. In some cases, alternate gases to the process gas shoul

48、d be considered for start-up or dew-point reasons. z 4.2.8 If specified, additional provision for seal-gas conditioning as specified by the purchaser shall be furnished. NOTE Gas conditioning can involve heat tracing, alternate seal-gas sources, coalescing filters, or other provisions. 4.2.9 Valved

49、vents, drains and piping shall be furnished to permit draining, cleaning and refilling of idle components, such as filter elements, while the equipment is in operation. 4.2.10 Seal-gas module piping shall be arranged such that it can be manually drained prior to start-up to avoid the possibility of condensed liquids entering the seals. This is also a requirement for interconnecting piping that shall be followed by the packager or installation contractor. z 4.2.11 The purchaser shall specify when and wh