Document: NUREG-0800
Document ID: 1add33e8-ea1c-46d8-9e11-29944f57ca8a
Document Type: srp
Title: Revision 6 – August 2016
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1601/ML16019A184.pdf
Revision Date: 2023-06
Chapter: 7
Section ID: 7
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Attention: Reproduction and Distribution Services Section by fax to (301) 415 2289; or by email to DISTRIBUTION@nrc.gov. Electronic copies of this section are available through the NRC public Web site at http://www.nrc.gov/reading rm/doc collections/nuregs/staff/sr0800/, or in the NRC Agencywide Documents Access and Management System (ADAMS), at http://www.nrc.gov/reading rm/adams.html under ADAMS Accession No. ML16019A184. NUREG-0800 U.S. NUCLEAR REGULATORY COMMISSION STANDARD REVIEW PLAN BRANCH TECHNICAL POSITION 7-11 GUIDANCE ON APPLICATION AND QUALIFICATION OF ISOLATION DEVICES REVIEW RESPONSIBILITIES Primary - Organization responsible for the review of instrumentation and controls Secondary - None Review Note: The revision numbers of Regulatory Guides (RG) and the years of endorsed industry standards referenced in this branch technical position (BTP) are centrally maintained in Standard Review Plan (SRP) Section 7.1-T, “Regulatory Requirements, Acceptance Criteria, and Guidelines for Instrumentation and Control Systems Important to Safety,” (Table 7-1). Therefore, the individual revision numbers of RGs (except RG 1.97) and years of endorsed industry standards are not shown in this BTP. References to industry standards incorporated by reference into regulation (IEEE Std 279-1971 and IEEE Std 603-1991) and industry standards that are not endorsed by the agency do include the associated year in this BTP. See Table 7-1 to ensure that the appropriate RGs and endorsed industry standards are used for the review. BTP 7-11-2 Revision 6 – August 2016 A. BACKGROUND This branch technical position (BTP) provides guidelines for reviewing the use of electrical isolation devices to allow connections between redundant portions of safety systems or between safety and nonsafety systems. This BTP deals with the criteria and methods used to confirm that the design of isolation devices ensures that credible failures in the connected nonsafety or redundant channels will not