IEEE Std 494-1974 IEEE standard methods for identification of documents related to class 1E equipment and systems for nuclear power generating stations.pdf
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1、ANSI/IEEE Std 494-1 974 (Reaffirmed 1983) - IEEE Standard Method for Identification of Documents Related to Class 1E Equipment and Systems for Nuclear Power Generating Stations Published by The Institute of Electrical and Electronics Engineers, Inc 345 East 47th Street, New York, NY 10017, USA SH049
2、45 .%.mwihY+ 19, 1974 n ,- An American National Standard IEEE Standard Method for Identification of Documents Related to Class 1E Equipment and Systems for Nuclear Power Generating Stations 1. Scope This document establishes criteria for the uniform identification of documents signifi- cant to desig
3、n, construction, testing, oper- ation, and maintenance of Class 1E equip- ment and systems for nuclear power gener- ating stations. It includes recommendations for identification of specific parts of these doc- uments. Criteria are also established for iden- tification on documents of redundant port
4、ions of Class 1E equipment and systems. The quality assurance program, as applied to Class 1E equipment procurement, should provide records sufficient to meet the needs and requirements of IEEE Std 279-1971, Cri- teria for Protection Systems for Nuclear Pow- er Generating Stations (ANSI N42.7-1972).
5、 and IEEE Std 308-1974, Standard Criteria for Class 1E Power Systems for Nuclear Power Generating Stations. Additional identifica- tion on procurement documents is, therefore, not required. h 2. Purpose The purpose of this document is to provide a method for identification of documents re- lating to
6、 Class 1E equipment and systems such that users of the documents will be able to recognize those systems which must meet the requirements set forth in IEEE Std 279- 1971 (ANSI N42.7-1972) and IEEE Std 308- 1974. ment and reactor heat removal, or otherwise are essential in preventing significant rele
7、ase of radioactive material to the environment. ment. documents. Drawings and other records sig- nificant to the design, construction, testing, maintenance, and operation of Class 1E equipment and systems for nuclear power gen- erating stations. NOTE: Within the context of this standard, documents i
8、nclude: (1) Drawings such as instrument diagrams, functional control diagrams, one line diagrams, schematic diagrams, equipment arrangements, cable and tray lists, wiring dia- grams (2) Instrument data sheets (3) Design specifications (4) Instruction manuals (5) Test specifications, procedures, and
9、reports (6) Device lists Not to be included as documents within the context of this standard are: project schedules, financial reports, meeting minutes, correspondence such as letters and memoranda, and equipment procurement documentation covered by quality assurance programs. nuclear safety related
10、. That term used to call attention to safety classifications incorporat- ed in the body of the document so marked. NOTE: As used in this document, the term calls atten- tion to the safety classification Class 1E. redundant equipment or systems. A piece of equipment or a system that duplicates the es
11、- sential function of another piece of equipment or a system to the extent that either may per- form the required function regardless of the state of operation or failure of the other. significant. Demonstrated to be important by the safety analysis of the station. 3. Definitions Class 1E. The safet
12、y classification of the elec- tric equipment and systems that are essential to emergency reactor shutdown, containment isolation, reactor core cooling, and contain- 4. Requirements 4 . 1 Document Identifiation 4.1.1 Any document, as defined in Section 3, for Class 1E equipment and systems, in -. 7 I
13、EEE Std 494-1974 METHOD FOR IDENTIFICATION OF DOCUMENTS RELATED TO whole or in part, shall be identified with the term nuclear safety related. 4 . 1 . 2 The term nuclear safety related shall be placed conspicuously on the title or first page. Drawings for Class 1E equipment and systems shall have th
14、ese words located in or immediately adjacent to the title block. 4 . 1 . 3 The term nuclear safety related shall be displayed in a character size equal to or larger than the largest size used in words in the body of the document. 4.2 Additional Identification of Specific Parts of Nuclear Safety Rela
15、ted Documents 4 . 2 . 1 Except as provided in Section 4.2.2, documents that are only in part nuclear safety related shall have the nuclear safety related or the non-nuclear safety related information identified to differentiate the two. 4 . 2 . 2 Documents in the form of written de- scriptions in wh
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