ML20073E012

Responds to NRC Re Violations Noted in IE Insp Rept 50-020/83-01.Corrective Actions:Detailed Procedure Prepared for Use in Calibr Containment Differential Pressure Instrument & Verifying Interlock Trip Point

ML20073E012
Person / Time
Site:	MIT Nuclear Research Reactor
Issue date:	03/23/1983
From:	Lisa Clark MASSACHUSETTS INSTITUTE OF TECHNOLOGY, CAMBRIDGE
To:	Starostecki R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20073D992	List: ML20073E012
References
NUDOCS 8304140315
Download: ML20073E012 (2)

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7 NUCLEAR REACTOR LABORATORY ,f j

" AN INTERDEPARTMENTAL CENTER OF hyg#

MASSACHUSETTS INSTITUTE OF TECHNOLOGY O K. HARLING 138 Albany Street Cambridge, Mass. 02139 L. CLARK, JR.

Director (017)253-4 2 11 Directorof ReactorOperations March 23, 1983 U. S. Nuclear Regulatory Commission, Region #1 Attn: Mr. Richard W. Starostecki, Director Division of Project and Resident Programs 631 Park Avenue King of Prussia, PA 19406 Subj ect: Inspection No. 50-20/83-01 Gentlemen:

This letter is submitted in response to USNRC Region #1 letter of March 3,1983 forwarding inspection Report No. 50-20/83-01 and notifying MIT that two of the activities inspected were not in full compliance with NRC require-ments, as described in Appendix A to the letter.

In accordance with the instructions contained in Appendix A, MIT provides the following information to the Commission:

1) Relative to the first activity that was not in full compliance:

a) A detailed written procedure has been prepared and approved for use in calibrating the containment differential pressure instru-ment and verifying its interlock trip point. The instrument has been calibrated and its interlock trip point verified using this procedure. The calibration showed that the interlock's trip point did in fact occur within the acceptance criteria.

This was as expected since, while the differential pressure in-strument itself had not been calibrated, other related instru-ments were regularly calibrated and routine operation of the containment ventilation system would have disclosed any gross miscalibration.

b) This procedure has been added to the master list of test and calibrations. This will insure that the unit is calibrated at the specified frequency in the future.

c) Full compliance with NRC requirements has been achieved.

2) Relative to the second activity that was not in full compliance; a) The individual involved has now performed sufficient manipulations so that the record is in full compliance with the requirements of the Requalification Program for Licensed Personnel.

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USNRC March 23, 1983 l Page 2 '

3 b) The reactor control manipulation records of all other licensed personnel were reviewed and found to be in- compliance. Never-l theless, all licensed personnel have been reminded both verbally-and in writing of the importance of performing the required .

number of reactor control manipulations. This should insure

future compliance.

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c) -Full compliance with NRC requirements has been achieved.

Please contact the undersigned.if you require any further information j in connection with this response.

1 l Sincerely, f

j J. A. Bernard

-Reactor Superintendent j

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- d' Lincoln Clark, Jr.

hrw d Director of Reactor Operations

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