ML20237D793

Requests Addl Info in Order to Complete Review of 870622 Request for Amend to Nbs Reactor Tech Specs Re Cold Neutron Facility

ML20237D793
Person / Time
Site:	National Bureau of Standards Reactor
Issue date:	12/17/1987
From:	Michaels T Office of Nuclear Reactor Regulation
To:	Rozier Carter NATIONAL INSTITUTE OF STANDARDS & TECHNOLOGY (FORMERL
References
NUDOCS 8712240193
Download: ML20237D793 (4)

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k UNITED STATES g- j NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 fo December 17, 1987 _

Docket No. 50-184 1

Dr. Robert S. Carter, Chief )

Reactor Radiation Division National Bureau of Standards U.S. Department of Commerce Gaithersbug, Maryland 20899

Dear Dr. Carter:

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SUBJECT:

' REQUEST FOR ADDITIONAL INFORMATION REGARDING CHANGES RELATING TO COLD NEUTRON FACILITY In order to complete our review of your request for an amendment to the NBSR Technical Specifications, submitted by letter dated June 22, 1987, we request that you provide the following information:

An analysis which shows how the isolation valves will meet the leakage requirement for the confinement as specified in the Technical. Specifications.

With regard to the confinement building control system, as related to the isolation valves, provide the following:

Show how all controls will be redundant up to the motor starters or final solenoid valve for each isolation valve.

How will the isolation valves be actuated by sensing instruments (radiation and pressure detectors) and master relays and how these instruments and relays will be duplicate and independent.

How sufficient indication and control will t<! available in the emergency control center to indicate the status of each vital component and to allow manual control should its automatic control malfunction. This manual backup shall be in addition to the redundant automatic controls.

A discussion of surveillance procedures that help assure the capability of the isolation valves.

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Dr. Robert J. Carter, Chief .

A diagram and discussion of valve response in the event of a need for emergency actuation.

Sincerely, 4 8.

Theodore S. Michaels, Project Manager Standardization and Non-Power Reactor Project Directorate Division of Reactor Projects III, IV, V and Special Projects Office of Nuclear Reactor Regulation I

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original. signed by Theodore S. Michaels, Project lianager

, ,. Standardization ano Non-Pewer Reactor-Project Directorate Division 'of Reactor. Projects III, IV, V and Special. Projects Of.fice of Nuclear Reactor Regulation.

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' DISTRIBUTION:

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. National Bureau of Standards Docket No. 50-184 cc: Montgomery County Executive County Off. ice Building Rockville, Maryland 20858 l Director -

Department of State Planning )

301 West Preston Street Baltimore, Maryland 21201' Director .

Department of Natural Resources  !

Power Plant Siting Program j

- Energy & Coastal Zone Administration Tawes State Office Building ,

Annapolis, Maryland 21401  ;

Mr. Tawfik Raby Reactor Supervisor Reactor Radiation Division L National Bureau of Standards U.S. Department of Commerce Washington, D.C. 20234

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