ML20214R648

for Comment Issue of Draft Reg Guide,Task Ee 404-4, Environ Qualification of Connection Assemblies for Nuclear Power Plants

ML20214R648
Person / Time
Issue date:	05/31/1987
From:	NRC OFFICE OF NUCLEAR REGULATORY RESEARCH (RES)
To:
Shared Package
ML20214R651	List: ML20214R648 ML20214R661
References
RTR-REGGD-1.156, TASK-EE-404-4, TASK-RE REGGD-01.XXX, REGGD-1.XXX, NUDOCS 8706080234
Download: ML20214R648 (7)

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[ U.S. NUCLEAR REGULATORY COMMISSION 0FFICE OF NUCLEAR REGULATORY RESEARCH Di io f Task EE 404

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) DRAFT REGULATORY GUIDE AND VALUE/ IMPACT STATEMENT

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Contact:

S. K. Aggarwal (301)443-7840 ENVIRONMENTAL QUALIFICATION OF CONNECTION ASSEMBLIES l FOR NUCLEAR POWER PLANTS o

A. INTRODUCTION ^

Criterion III, " Design Control," of Appendix B, " Quality ssurance Criteria for Nuclear Power Plants and Fuel Reprocessing Plants," to'1,0w CFR Part 50, . .

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" Domestic Licensing of Production and Utilization Facilities',": requires, among

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other things, that, where a test program is used to verify'the adequacy of specific design features, it include suitable qualification testing of a proto-typeunitunderthemostadversedesignconditionh.. -

Section 50.49, " Environmental Qualification _ of Ele'ctric Equipment Important

/O to Safety for Nuclear Power Plants," of 10 CFR P' art'50 requires that certain electric equipment important to safety be qualified for its application and specified performance.

Section 50.49 also states requirements for establishing environmental qualification methods and qualification parameters.

This regulatory guide describes a method acceptable to the NRC staff for f complying with the Commission's regulations with regard to the environmental qualification of quick-disconnect connection assemblies and environmental seals in combination with cables or wires as assemblies for service in nuclear power plants.

The environmentalfq'ualification

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is to ensure that connection assemblies can perform their safety functions during and after a design basis event.

Any information c011ection activities centioned in this draft regulatory guide are contained as; requirements '~

in 10 CFR Part 50, which provides the regulatory basis for;this guide. The information collection requirements in 10 CFR Part 50 have been cleared under OMB Clearance No. 3150-0011.

8706080234 870531 PDR REGGD 01.XXX R PDR This regulatory guide and the associated value/ impact statement are being issued in draft form to involve the public in the early stages of the development of a regulatory position in this area. They have not received complete staff review and do not represent an official NRC staf f position.

f Pubitc comunents are being solicited on both drafts the guide (including any implementation schedule) and the value/ impact

\ statement. Coaunents on the value/ impact statement should be accompanied by supporting data. Written coannents may be sutaitted to the Rules and Procedures Branch. ORR. Adit. U.S. Nuclear Regulatory Coannission. Washington. DC 20555. Copenents may also be delivered to Room 4000. Nryland National Banit Bu11 din 2. 7735 Old Georgetown Road. Bethesda. Nryland from 8:15 a.m. to 5:00 p.m. Copies of coarients received may be examined at the RRC Public Document Room.1717 H 5treet NW.,

Washington. DC. Cosaments will be most helpful if received by August 7,1987 Requests for single copies of draft guides (which may be reproduced) or for placement on an automatic distribution list for single copies of future draft guides in specittc divistoas should be arde in writing to the U.S. Nuclear Regulatory Conunission.

Washington. DC 20555. Attention: Director. Division of Technical Information and Document Control.

i B. DISCUSSION IEEE Std 572-1985 " Qualification of Class 1E Connection Assemblies for Nuclear Power Generating Stations,"* published in September 1985, was prepared by Subcommittee 2, " Qualification," of the Nuclear Power Engineering Committee of the Institute of Electrical and Electronics Engineers (IEEE) and was approved by the IEEE Standards Board on December 13, 1984. This standard describes basic procedures for qualifying connection assemblies (for example, quick-disconnect connection assemblies and environmental' seals in combination with cables as assemblies).

Guidance on seismic and dynamic qualification for this equipment is pro-vided in Regulatory Guide 1.100, " Seismic Qualification of Electric Equipment for Nuclear Power Plants."

Section 50.49 of 10 CFR Part 50 defines three categories of electric equip-ment that are required te be environmentally qualified: (1) safety-related l equipment, (2) nonsafety-related equipment whose failure could adversely affect safety-related equipment, and (3) certain post-accident monitoring equipment.

This regulatory guide provides an acceptable method of qualifying quick-disconnect connection assemblies and environmental seals in combination with cables or wires as assemblies for all three categories of equipment.

IEEE Std 572-1985 contains references to other national standards. Those standards that are referenced but not endorsed by NRC are expected to be used in a manner consistent with regulatory practice.

C. REGULATORY POSITION When used in conjunction with Regulatory Guide 1.89, " Environmental Qualification of Certain Electric Equipment Important to Safety for Nuclear Power Plants," the procedures described by IEEE Std 572-1985 are acceptable to the NRC staff for satisfying the Commission's regulations pertaining to the environmental qualification of quick-disconnect connection assemblies and environmental seals in combination with cables or wires as assemblies for service in nuclear power plants to ensure that th: connection assemblies can perform their safety functions.

^ Copies may be purchased from the Institute of Electrical and Electronics Engineers, O\

345 East 47th Street, New York, NY 10017.

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l D. IMPLEMENTATION The purpose of this section is to provide information to applicants and licensees regarding the NRC staff's plans for using this regulatory guide.

Except in those cases in which the applicant or licensee proposes an accept-able alternative method for complying with specified portions of the Commission's regulations, the methods described herein will be used in the evaluation of the qualification of connection assemblies, within the scope of this guide, for nuclear power plants as follows:

1. Plants for which the construction permit is issued after the issue date of the final guide,

2. Plants for which the operating license application is docketed 6 months or more after the issue date of the final guide,

3. Plants for which the applicant or licensee voluntarily commits s to the provisions of this guide.

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