ML20155A054
| ML20155A054 | |
| Person / Time | |
|---|---|
| Site: | McGuire, Mcguire  |
| Issue date: | 03/27/1986 |
| From: | Tucker H DUKE POWER CO. |
| To: | Grace J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| NUDOCS 8604080194 | |
| Download: ML20155A054 (3) | |
Text
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k DUKE Powen Gonem P.O. IMix 33180 CHAMLOTTE, N.O. 282 52 HALH.TUCKEN TE REPHOME p04 2MMI vesa reessme=v
.F 31 P2: 03 March 27, 1986 PDr."JT Nelsea5drace[ Regional Administrator "U.S'.' Nuclear Regulatory Commission - Region II 101 Marietta Street, NW, Suite 2900 Atlanta, GA 30302
Subject:
McGuire Nuclear Station Docket No. 50-369, 50-370
Reference:
RII:
NRC/0IE Inspection Report 50-369/85-39, 50-370/85-40
Dear Dr. Grace:
In response to Mr. V.L. Brownlee's letter of February 21, 1986, please find attached a supplemental response to the deviation which was identified in the above referenced Inspection Report.
Very truly yours, Ms. G L.pfs Hal B. Tucker JBD/jgm Attachment xc:
Mr. W.T. Orders Senior Resident Inspector - NRC McGuire Nuclear Station DR t.
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McGUIRE NUCLEAR STATION RESPONSE TO DEVIATION 50-369/85-39-01 & 370/85-40-01 Deviation McGuire FSAR Section 6.4.3 and Table 6.2.3-4 stipulate that inplace testing of the Control Room Area Ventilation Systems (CV) were in compliance with Regulatory Guide 1.52 (Revision 2, March 1978) which in turn obligates the licensee to ANSI N510-1975.
Contrary to those commitments, a review of completed preoperational tests performed on McGuire Control Room Area Ventilation Trains A and B revealed that Regulatory Guide 1.52 and/or ANSI N510-1975 were not adhered to in
-that the air-aerosol uniformity tests were not performed as specified.
This deviation is applicable to Units 1 and 2.
Response
In response to the notice of deviation regarding the lack of preoperational
' tests for Control Room Area Ventilation Trains A and B, a temporary test was written and conducted on 11/6-7/85 to determine air / aerosol mixing uniformity. Results of this testing met the acceptance, and have been previously reported. McGuire Nuclear Station was in full compliance as of 11/7/85.
The missing preoperational tests resulted from a miscommunication between station and vendor testing personnel, regarding applicable revisions of ANSI N510. Preoperational tests will be required again only in the case of system modifications, and testing will be performed by Duke personnel.
Through our awareness of FSAR commitments, further deviations will be avoided.
NRC Concern The response statement "through awareness of FSAR commitments, further deviations will be avoided" did not provide sufficient detail to determine that your actions are sufficient to assure future compliance.
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-a, Supplemental Response:
Preoperational tests will be required to be performed again only in :he event of a system modification, Nuclear Station Modifications are implemented under the direction of the Projects group. In processing an NSM, the Projects group draws up an implementation plan, which provides a detailed description of the modification and its impact. Post modification testing is also briefly addressed.
A post modification test (PNT) procedure is followed by the Projects group in implementing an NSM.
Under this procedure, meetings are conducted by the responsible Projects Engineer, involving plant and/or design personnel most knowledgeable about a given system. At this time, the appropriate FSAR commitments would be identified, and testa devised to demonstrate compliance with the applicable standards.
Through these administrative controls involving the review of modifications by Duke personnel familiar with FSAR commitments and applicable codes, future deviations involving ventilation system preoperational testing will be avoided.
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