1、 NOTICE OF COPYRIGHT This is a copyright document and may not be copied or distributed in any form or manner without the permission of ISA. This copy of the document was made for the sole use of the person to whom ISA provided it and is subject to the restrictions stated in ISAs license to that pers
2、on. It may not be provided to any other person in print, electronic, or any other form. Violations of ISAs copyright will be prosecuted to the fullest extent of the law and may result in substantial civil and criminal penalties. STANDARD ISA-84.00.01-2004 Part 1 (IEC 61511-1 Mod) Functional Safety:
3、Safety Instrumented Systems For the Process Industry Sector Part 1: Framework, Definitions, System, Hardware and Software Requirements Approved 2 September 2004 ISA-84.00.01-2004 Part 1 (IEC 61511-1: Mod) Functional Safety: Safety Instrumented Systems for the Process Industry Sector Part 1: Framewor
4、k, Definitions, System, Hardware and Software Requirements ISBN: 978-1-55617-919-8 Copyright 2004 by IEC and ISA. All rights reserved. Not for resale. Printed in the United States of America. Nopart of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by
5、 any means (electronic, mechanical, photocopying, recording, or otherwise), without the prior written permission of the Publisher). ISA 67 Alexander Drive P.O. Box 12277 Research Triangle Park, North Carolina 27709 USAISA-84.00.01-2004 Part 1 (IEC 61511-1 Mod) 3 Copyright 2004 ISA. All rights reserv
6、ed. Preface This preface, as well as all footnotes, is included for information purposes and is not part of ,6$84.00.01-2004 Part 1 (IEC 61511-1 Mod). This document has been prepared as part of the service of ISA the Instrumentation, Systems, and Automation Society toward a goal of uniformity in the
7、 field of instrumentation. To be of real value, this document should not be static but should be subject to periodic review. Toward this end, the Society welcomes all comments and criticisms and asks that they be addressed to the Secretary, Standards and Practices Board; ISA; 67 Alexander Drive; P.
8、O. Box 12277; Research Triangle Park, NC 27709; Telephone (919) 549-8411; Fax (919) 549-8288; E-mail: standardsisa.org. The ISA Standards and Practices Department is aware of the growing need for attention to the metric system of units in general, and the International System of Units (SI) in partic
9、ular, in the preparation of instrumentation standards. The Department is further aware of the benefits to USA users of ISA standards of incorporating suitable references to the SI (and the metric system) in their business and professional dealings with other countries. Toward this end, this Departme
10、nt will endeavor to introduce SI-acceptable metric units in all new and revised standards, recommended practices, and technical reports to the greatest extent possible. Standard for Use of the International System of Units (SI): The Modern Metric System, published by the American Society for Testing
11、 any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non-governmental organizations liaising with the IEC also participate in this preparation. The IEC collaborates closely with the International Organization for S
12、tandardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of the IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committe
13、e has representation from all interested National Committees. 3) The documents produced have the form of recommendations for international use and are published in the form of standards, technical specifications, technical reports or guides and they are accepted by the National Committees in that se
14、nse. 4) In order to promote international unification, IEC National Committees undertake to apply IEC International Standards transparently to the maximum extent possible in their national and regional standards. Any divergence between the IEC Standard and the corresponding national or regional stan
15、dard shall be clearly indicated in the latter. 5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in conformity with one of its standards. 6) Attention is drawn to the possibility that some of the elements of this Int
16、ernational Standard may be the subject of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 61511-1 has been prepared by subcommittee 65A: System aspects, of IEC technical committee 65: Industrial-process measurement and co
17、ntrol. The text of this standard is based on the following documents: FDIS Report on voting 65A/368/FDIS 65A/372/RVD Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. This publication has been drafted in accordance wit
18、h the ISO/IEC Directives, Part 2. 12 ISA-84.00.01-2004 Part 1 (IEC 61511-1 Mod) Copyright 2004 ISA. All rights reserved. IEC 61511 ANSI/ISA-84.00.01-2004 (IEC 61511 Mod) consists of the following parts, under the general title Functional safety: Safety instrumented systems for the process industry s
19、ector (see Figure 1): Part 1: Framework, definitions, system, hardware and software requirements Part 2: Guidelines in the application of IEC 61511-1 ANSI/ISA-84.00.01-2004 Part 1 (IEC 61511-1 Mod) . Part 3: Guidance for the determination of the required safety integrity levels The committee has dec
20、ided that the contents of this publication will remain unchanged until 2007. At that date, the publication will be reconfirmed; withdrawn; replaced by a revised edition, or amended. A bilingual version of this standard may be issued at a later date. ISA-84.00.01-2004 Part 1 (IEC 61511-1 Mod) 13 Copy
21、right 2004 ISA. All rights reserved. INTRODUCTION Safety instrumented systems have been used for many years to perform safety instrumented functions in the process industries. If instrumentation is to be effectively used for safety instrumented functions, it is essential that this instrumentation ac
22、hieves certain minimum standards and performance levels. This international standard addresses the application of safety instrumented systems for the Process Industries. It also requires a process hazard and risk assessment to be carried out to enable the specification for safety instrumented system
23、s to be derived. Other safety systems are only considered so that their contribution can be taken into account when considering the performance requirements for the safety instrumented systems. The safety instrumented system includes all components and subsystems necessary to carry out the safety in
24、strumented function from sensor(s) to final element(s). This international standard has two concepts which are fundamental to its application; safety lifecycle and safety integrity levels. This standard addresses safety instrumented systems which are based on the use of electrical/electronic/program
25、mable electronic technology. Where other technologies are used for logic solvers, the basic principles of this standard should be applied. This standard also addresses the safety instrumented system sensors and final elements regardless of the technology used. This International Standard is process
26、industry specific within the framework of IEC 61508 (see Annex A). This International Standard sets out an approach for safety life-cycle activities to achieve these minimum standards. This approach has been adopted in order that a rational and consistent technical policy is used. In most situations
27、, safety is best achieved by an inherently safe process design If necessary, this may be combined with a protective system or systems to address any residual identified risk. Protective systems can rely on different technologies (chemical, mechanical, hydraulic, pneumatic, electrical, electronic, pr
28、ogrammable electronic) To facilitate this approach, this standard requires that a hazard and risk assessment is carried out to identify the overall safety requirements; requires that an allocation of the safety requirements to the safety instrumented system(s) is carried out; works within a framewor
29、k which is applicable to all instrumented methods of achieving functional safety; details the use of certain activities, such as safety management, which may be applicable to all methods of achieving functional safety. This International Standard on safety instrumented systems for the process indust
30、ry addresses all safety life-cycle phases from initial concept, design, implementation, operation and maintenance through to decommissioning; enables existing or new country specific process industry standards to be harmonized with this standard. 14 ISA-84.00.01-2004 Part 1 (IEC 61511-1 Mod) Copyrig
31、ht 2004 ISA. All rights reserved. This International Standard is intended to lead to a high level of consistency (for example, of underlying principles, terminology, information) within the process industries. This should have both safety and economic benefits. In jurisdictions where the governing a
32、uthorities (for example, national, federal, state, province, county, city) have established process safety design, process safety management, or other requirements, these take precedence over the requirements defined in this standard. ISA-84.00.01-2004 Part 1 (IEC 61511-1 Mod) 15 Copyright 2004 ISA.
33、 All rights reserved. Clauses 9 and 10Design phase forsafetyinstrumentedsystemsClause 11Design phase forsafetyinstrumentedsystem softwareClause 12Allocation of the safety requirements tothe safety instrumented functions anddevelopment of safety requirementsspecificationDevelopment of the overall saf
34、etyrequirements (concept, scope definition,hazard and risk assessment)Clause 8Factory acceptance testing,installation and commissioning andsafety validation of safetyinstrumented systemsClauses 13, 14, and 15Operation and maintenance,modification and retrofit,decommissioning or disposal ofsafety ins
35、trumented systemsClauses 16, 17, and 18SupportpartsTechnicalrequirementsPART 1PART 1PART 1PART 1PART 1ReferencesClause 2PART 1Definitions andabbreviationsClause 3PART 1ConformanceClause 4PART 1Management offunctional safetyClause 5PART 1InformationrequirementsClause 19PART 1DifferencesAnnex “A”PART
36、1Guideline for theapplication of part 1PART 2Guidance for thedetermination of therequired safetyintegrity levelsPART 3Safety life-cyclerequirementsClause 6PART 1VerificationClause 7PART 1Figure 1 Overall framework of this standard IEC 3240/02 This page intentionally left blank.ISA-84.00.01-2004 Part
37、 1 (IEC 61511-1 Mod) 17 Copyright 2004 ISA. All rights reserved. FUNCTIONAL SAFETY SAFETY INSTRUMENTED SYSTEMS FOR THE PROCESS INDUSTRY SECTOR Part 1: Framework, definitions, system, hardware and software requirements 1 Scope This International Standard gives requirements for the specification, desi
38、gn, installation, operation and maintenance of a safety instrumented system, so that it can be confidently entrusted to place and/or maintain the process in a safe state. This standard has been developed as a process sector implementation of IEC 61508. In particular, this standard a) specifies the r
39、equirements for achieving functional safety but does not specify who is responsible for implementing the requirements (for example, designers, suppliers, owner/operating company, contractor); this responsibility will be assigned to different parties according to safety planning and national regulati
40、ons; b) applies when equipment that meets the requirements of IEC 61508, or of 11.5 of IEC 61511-1 ANSI/ISA-84.00.01-2004 Part 1 (IEC 61511-1 Mod), is integrated into an overall system that is to be used for a process sector application but does not apply to manufacturers wishing to claim that devic
41、es are suitable for use in safety instrumented systems for the process sector (see IEC 61508-2 and IEC 61508-3); c) defines the relationship between IEC 61511 ANSI/ISA-84.00.01-2004 (IEC 61511Mod), and IEC 61508 (Figures 2 and 3); d) applies when application software is developed for systems having
42、limited variability or fixed programmes but does not apply to manufacturers, safety instrumented systems designers, integrators and users that develop embedded software (system software) or use full variability languages (see IEC 61508-3); e) applies to a wide variety of industries within the proces
43、s sector including chemicals, oil refining, oil and gas production, pulp and paper, non-nuclear power generation; NOTE Within the process sector some applications, (for example, off-shore), may have additional requirements that have to be satisfied. f) outlines the relationship between safety instru
44、mented functions and other functions (Figure 4); g) results in the identification of the functional requirements and safety integrity requirements for the safety instrumented function(s) taking into account the risk reduction achieved by other means; h) specifies requirements for system architecture
45、 and hardware configuration, application software, and system integration; i) specifies requirements for application software for users and integrators of safety instrumented systems (clause 12). In particular, requirements for the following are specified: safety life-cycle phases and activities tha
46、t are to be applied during the design and development of the application software (the software safety life-cycle model). These 18 ISA-84.00.01-2004 Part 1 (IEC 61511-1 Mod) Copyright 2004 ISA. All rights reserved. requirements include the application of measures and techniques, which are intended t
47、o avoid faults in the software and to control failures which may occur; information relating to the software safety validation to be passed to the organization carrying out the SIS integration; preparation of information and procedures concerning software needed by the user for the operation and mai
48、ntenance of the SIS; procedures and specifications to be met by the organization carrying out modifications to safety software; j) applies when functional safety is achieved using one or more safety instrumented functions for the protection of personnel, protection of the general public or protectio
49、n of the environment; k) may be applied in non-safety applications such as asset protection; l) defines requirements for implementing safety instrumented functions as a part of the overall arrangements for achieving functional safety; m) uses a safety life cycle (Figure 8) and defines a list of activities which are necessary to determine the functional requirements and the safety integrity requirements for the safety instrumented systems; n) requires that a hazard and risk assessment is to be carried out to define the safety fun
