EEMUA PUB NO 208-2010 Guide to life-cycle management of Pressure relief systems (Edition 1)《泄压系统生命周期管理指南(第2版)》.pdf

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1、 Guide to life-cycle management of Pressure relief systems PUBLICATION 208 Edition 1 Released by IHS. NOT FOR RESALE ENGINEERING EQUIPMENT AND MATERIALS USERS ASSOCIATION Guide to life-cycle management of Pressure relief systems PUBLICATION 208 Copyright 2010 The Engineering Equipment and Materials

2、Users Association A company limited by guarantee. Registered in England. Company number 477838. ISBN 978 0 85931 173 1 Imprint reference 02-2010 Registered and Trading Address 10-12 Lovat Lane London EC3R 8DN Telephone: +44 (0)20 7621 0011 Fax: +44 (0)20 7621 0022 E-mail: saleseemua.org Website: www

3、.eemua.org EEMUA Publication 208 Guide to life-cycle management of pressure relief systems EEMUA ii ENGINEERING EQUIPMENT AND MATERIALS USERS ASSOCIATION The Engineering Equipment and Materials Users Association, more commonly known as EEMUA, is a European non-profit membership Association helping c

4、ompanies that own or operate industrial facilities - the users of engineering equipment and materials. EEMUA aims to improve the safety, environmental and operating performance of industrial facilities in the most cost-effective way, thereby demonstrating and pursuing leadership in asset management.

5、 EEMUA Members pursue these aims through collaboration for mutual benefit, sharing engineering experiences and expertise and by promoting their distinct interests as the users of engineering products. Specifically, the aims of EEMUA Member companies are achieved by: providing the organisation within

6、 which networking, information sharing and collaboration on non-competitive technical matters can take place; influencing the way written regulations are interpreted and applied in practice; presenting and promoting Members views, and encouraging the application of good, sound engineering practices;

7、 developing user guides, specifications, training and competency schemes; facilitating Members participation in national and international standards making; influencing relevant national and European legislation and regulations. Formed in 1949 as the Engineering Equipment Users Association, and re-n

8、amed in 1983 (as a result of taking over the materials association, OCMA), EEMUA has for more than fifty years given companies that own and operate process plants, power stations and other significant industrial facilities, a collaborative voice in addressing technical and engineering related issues

9、 that impact on good integrity management and asset management practices. The Association is open to companies of all sizes that meet its engineering user criteria. Further details of current Members of EEMUA is available on the Associations website, www.eemua.org. EEMUA activities often lead to the

10、 production of publications. These are prepared for Members use and are often offered for sale as well. A list of EEMUA publications for sale is given at the end of this Publication. The full list is also on the Associations website, including details of on-line shopping facilities. To enquire about

11、 corporate Membership, write to enquirieseemua.org or call +44 (0)20 7621 0011. EEMUA Publication 208 Guide to life-cycle management of pressure relief systems EEMUA iii ABOUT THIS PUBLICATION Legal Aspects All rights, title and interest in this Publication shall belong to EEMUA. All rights are rese

12、rved. No part of this Publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means: electronic, mechanical, photocopying, recording or other, without the express prior written agreement of the EEMUA Executive Director. Infringement of copyright is illegal a

13、nd also reduces the Associations income thereby jeopardising its ability to fund the production of future publications. It has been assumed in the preparation of this Publication that: the user will ensure selection of those parts of its contents appropriate to the intended application; and that suc

14、h selection and application will be correctly carried out by appropriately qualified and competent persons for whose guidance this Publication has been prepared. EEMUA and the individual members of the Work Group that prepared this EEMUA Publication do not, and indeed cannot, make any representation

15、 or give any warranty or guarantee in connection with material contained herein. EEMUA and the individual members of the Work Group that prepared this EEMUA Publication expressly disclaim any liability or responsibility for damage or loss resulting from the use or reliance on this Publication. Any r

16、ecommendations contained herein are based on the most authoritative information available at the time of writing and on current good engineering practice, but it is essential for the user to take account of pertinent subsequent developments and/or legislation. Any person who encounters an inaccuracy

17、 or ambiguity when making use of this Publication is asked to notify EEMUA without delay so that the matter may be investigated and appropriate action taken. Consultation and Feedback EEMUA encourages constructive comments on this Publication from both Members of the Association and others. Comments

18、 should be sent on the standard feedback form, a copy of which is provided towards the end of this Publication. An electronic version of the feedback form is available from EEMUA - e-mail your request for a copy to enquirieseemua.org, telephone your request to +44 (0)20 7621 0011, or download the fo

19、rm from the EEMUA website at www.eemua.org. Submit comments by e-mail (preferred) or post. Comments will be considered by the relevant EEMUA Technical Committee and may be incorporated in future editions of this Publication. New editions will be publicised on the EEMUA website. EEMUA Publication 208

20、 Guide to life-cycle management of pressure relief systems EEMUA iv EEMUA Publication 208 Guide to life-cycle management of pressure relief systems EEMUA v Contents Foreword 1 1. Introduction . 3 2. Life-cycle Management Issues . 5 2.1 Introduction . 5 2.2 Relief System Design . 6 2.3 Installation a

21、nd Commissioning . 6 2.4 Operation and Maintenance 7 2.5 Modifications 7 2.6 Documentation . 7 3. Relief System Design and Specification 9 3.1 General . 9 3.2 Pressure System Analysis . 11 3.3 Relieving Devices 14 3.4 Sizing the Relieving Device 19 3.5 Specification and Selection of the Relieving De

22、vice . 21 3.6 Location and Layout: Safety Valves . 21 3.7 Disposal/Discharge Systems . 22 4. Installation and Commissioning . 25 4.1 Introduction . 25 4.2 Contract Management 25 4.3 Pre-commissioning Checks and other Actions 25 4.4 Post-Overhaul Commissioning . 29 4.5 Records . 30 4.6 Establishing I

23、nitial Safe Operating Periods 30 5. Operation and Maintenance 31 5.1 Introduction . 31 5.2 Operation 31 5.3 Maintenance and Inspection of Relief Devices 35 5.4 Maintenance Requirements for other Equipment and Devices . 45 6. Definitions and Abbreviations . 49 6.1 Definitions 49 6.2 Abbreviations 49

24、7. References . 51 7.1 References 51 7.2 Related Documents 51 Appendix A Example Specifications 52 Appendix B Limiting the Relief Load . 54 Appendix C Operation and Maintenance Checklists 56 EEMUA Publication 208 Guide to life-cycle management of pressure relief systems EEMUA vi Photographs Photo 1

25、Safety valve isolation by using isolation valves along with a key operated interlock system . 3 Photo 2 Safety valves showing local venting to atmosphere 11 Photo 3 Balanced bellows safety valve with local bonnet vent . 16 Photo 4 Typical example of a bursting disc . 18 Photo 5 Low pressure safety d

26、evices on refrigerated storage duty . 19 Photo 6 Steam drum safety valve discharge pipework showing inlet route to silencers . 23 Photo 7 Bursting disc and safety valve in series, with interspace vent and pressure gauge 28 Photo 8 Safety valve on steam duty showing vented bonnet, lift lever and disc

27、harge expansion chamber 31 Photo 9 Steam drum safety valves showing open bonnet style of construction. . 33 Photo 10 Steam safety valve showing butt welded inlet connection, and open bonnet construction 36 Photo 11 Safety valve on steam duty showing lift lever . 41 Photo 12 Steam drum discharge sile

28、ncers. . 47 Photo 13 Typical example of a storage tank vent 47 EEMUA Publication 208 Guide to life-cycle management of pressure relief systems EEMUA 1 Foreword The Publication provides advice on the full range of activities involved in the successful management of pressure relief systems. It also ai

29、ms to fill the gaps in the current design guides and provide assistance in interpreting some of the standards and code issues and topics that are known to cause difficulties. This Publication has been prepared as it is considered that there is currently no industry guide that addresses the primary a

30、spects of pressure relief system management throughout the full life-cycle from design through construction, commissioning and operation. It is applicable to any industry operating a pressure relief system and it is intended for use by those who have responsibility for any aspect of such systems. It

31、 provides an overall view of the management of pressure relief and links the design process with the operation and life-cycle issues which are the concern of plant management. The Publication does not attempt to set out detailed design and operating methodologies. These are available in Internationa

32、l and American standards and other industry documents, including EEMUA publications. In the absence of any specific company standards, the user is referred to the list of references in Chapter 7. These for the most part reflect industry best practice and provide some direction for addressing key are

33、as of design and installation. The intent of the Publication is to avoid repetition of advice that can be found in industry standards and codes. However, in important areas where guidance is lacking or does not exist, some suggested approaches are put forward based on the general practices of EEMUA

34、members. This Publication has been developed by the EEMUA Pressure Relieving Safety Systems Technical Committee from the experience and practices of its member companies in the petroleum, chemicals and power industries. Note: The photographs included are for illustrative purposes and are not indicat

35、ive of conformance with particular Codes and Standards. EEMUA Publication 208 Guide to life-cycle management of pressure relief systems EEMUA 2 EEMUA Publication 208 Guide to life-cycle management of pressure relief systems EEMUA 3 1. Introduction The pressure relief system serving a process unit or

36、 utility is the ultimate safety system for protecting against overpressure when other means of protection have failed. In its simplest form, it may consist of a single relief device protecting a pressure system and independently discharging a non-hazardous fluid to atmosphere. Alternatively, it may

37、be a complex, closed system into which a number of relief devices, each protecting a separate pressure system, discharge flammable or toxic fluids. These relief devices may discharge at varying rates and in different combinations in different overpressure scenarios. Unlike most process systems, and

38、irrespective of the degree of complexity, the performance of many relief systems cannot be fully proven in advance of a real event. Therefore, any deficiencies could go undetected for the life of the facility. It follows that the system should be designed, operated and maintained to ensure operation

39、al integrity appropriate to its critical role. EEMUA members have extensive experience in all aspects of relief system design, operation and maintenance in a number of different environments, and recognise the importance of a structured, rather than a fragmented, approach to the subject. This Public

40、ation is presented in a number of Chapters, each of which addresses key aspects of pressure relief system management. These are: Chapter 2 - management issues; Chapter 3 - design and specification; Chapter 4 - installing and commissioning; Chapter 5 - operation and maintenance. Photo 1 Safety valve

41、isolation by using isolation valves along with a key operated interlock system EEMUA Publication 208 Guide to life-cycle management of pressure relief systems EEMUA 4 EEMUA Publication 208 Guide to life-cycle management of pressure relief systems EEMUA 5 2. Life-cycle Management Issues 2.1 Introduct

42、ion This Chapter deals with general issues with respect to life-cycle management of pressure relief devices, including training and competency, and the need to manage adequately any of the processes of, and interfaces between, design, installation, operation, maintenance and subsequent modification.

43、 In order to ensure that the appropriate level of integrity is built into the system and sustained throughout its life, a visible management system is required which links and controls each of these activities. Design, operation and maintenance are interdependent aspects of the life-cycle and should

44、 not be treated as a series of fragmented, unrelated activities. A number of different parties are involved in this process, making it particularly important to manage the resulting interfaces. Whilst a safety valve or pressure relieving safety system may only be part of a new plant or project, it i

45、s essential to ensure that the correct level of attention is paid to these critical systems, and that in the process of procurement appropriate provisions are made to clarify responsibilities and for the adequate transfer of information and records. Organisations may adopt different strategies for:

46、procurement; construction; operations; maintenance. The parties involved may be wholly in-house or may involve contractors. It is incumbent on all such parties to ensure adequate records, communications and transfer of relevant information relating to such systems is maintained. This Publication hig

47、hlights those issues that need to be addressed whatever the contractual arrangements adopted. The management of pressure relief systems should be included as part of a formal overall management system, which defines the appropriate design and maintenance standards and operational procedures. Many re

48、lief-related incidents have been attributed to deficiencies in the design process. Managing the design process effectively is, therefore, an important area in ensuring the safety of the pressure system. A range of standards, codes and practices are available to the user to follow. They differ in det

49、ail and approach, and it is important that those selected are compatible and appropriate to a particular process. A company needs to decide on the ones most appropriate to their application and whether they need to be supplemented by company standards and procedures. To ensure a consistent approach, written procedures should be developed to control the important activities. The procedures should clearly define responsibilities for key activities and address the issues relating to the interfaces between different groups and