Document: NUREG-0800
Document ID: 478329d7-b28f-4334-99e3-c149e19d1cdd
Document Type: srp
Title: ENVIRONMENTAL QUALIFICATION OF MECHANICAL AND ELECTRICAL EQUIPMENT
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340658.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.11
CFR Part: 
CFR Title: 

Content:
d Inside the Containment of Nuclear Power Generating Stations" (augmented by Regulatory Guide 1.40); IEEE Std 382, nGuide for Type Test of Class I Electric Valve Operators for Nuclear Power Generating Stations" (augmented by Regulatory Guide 1.73); and IEEE Std 383, "Standard for Type Test of Class lE Electric Cables, Field Splices, and Connections for Nuclear Power Generating Stations" (augmented by Regulatory Guide 1.131), are specific with regard to type test qualification of the equipment identified in their titles. The detailed criteria contained in these documents as they relate to environmental qualifi- cation should be used in conjunction with the more comprehensive criteria of NUREG-0588 for evaluating the respective equipment environmental qualifications. IEEE Std 317, "Electric Penetration Assemblies in Containment Structures for Nuclear Power Generating Stations" (augmented by Regulatory Guide 1.63), contains general guidance for qualification of. penetration assemblies. Therefore, this document as it relates to environmental qualification should be used in conjunction with NUREG-0588 for evaluating the environmental qualification of this equipment. In addition, IEEE Standards 381, 535, 627, 649, and 650 can be used for guidance purposes even though NRC has not formerly endorsed these standards through the issuance of a Regulatory Guide. The effects of the chemicals should be addressed for the equipment qualification. The concentration of chemicals used for qualification should be equivalent to or more severe than that resulting from the most limiting mode of plant opera- tion (e.g., containment spray, ECCS initiation, or recirculation phase). If the chemical composition of the chemical spray can be affected by equipment malfunctions, the most severe chemical environment that results from a single failure in the spray system should be assumed. If only demineralized water 3.11-4 Rev. 2 - July 1981 spray is used then the effect of the demineralized water