ML19324B332

Submits Supplemental Info in Response to Violations Noted in Insp Repts 50-282/88-16 & 50-306/88-16.Corrective Actions: Air Test Connections Will Be Added to Allow Pressurization of Containment Spray Piping Between Stated Motor Valves

ML19324B332
Person / Time
Site:	Prairie Island
Issue date:	10/13/1989
From:	Larson C NORTHERN STATES POWER CO.
To:	Wright G NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
NUDOCS 8911060066
Download: ML19324B332 (3)

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y' L Nonhem States Power Company

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, , 414 Nicol 6et Mall Minneapohs, Minnesota 554011927 '

Tolophone (612) 330-5500 i Le 1 October 13, 1989 l

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, I Mr G C Wright, Chief  !

Operations Branch, Region III  ;

i U S Nuclear Regulatory Commission '

799 Roosevelt Road I Glen Ellyn Illinois 60137 [

PRAIRIE ISLAND NUCLEAR GENERATING PLANT I Docket Nos. 50 282 License Nos. DPR 42 50 306 DPR 60 l l

Type C Testing of the Containment Spray System, i Supplemental Information in Response to  !

Inspection Reports No. 50-282/88016(DRS) and 50-306/88016(DRS) [

The purpose of this letter is to inform you that the Containment Spray System t will be modified in order to comply with Appendix J to 10 CFR Part 50.

Inspection Reports 50 282/88016 and 50 306/88016, transmitted by your letter dated November 21, 1988, contained a notice of violation for failure to i perform Type C testing on the Containment Spray System in accordance with the  !

requirements of Appendix J to 10 CFR Part 50. Specifically, the inspection i report identified out failure to Type C test Unit I containment spray valves

.MV 32103 and MV-32105 for penetrations 29A and 29B as a violation of Appendix f J requirements. In our December 21, 1988 response to this notice of violation, we stated that motor valves MV 32103 and MV-32105 could not be Type  ;

C tested in compliance with Appendix J in the present configuration. We committed to resolve this issue prior to the refueling outages scheduled in  ;

1990.

Air test connections will be added to allow pressurization of the containment spray piping between motor valves MV 32103 and MV-32105 and the down stream ,

manual isolation valves (See attached figure). This modification will be made t to the corresponding Unit 2 valves. These modifications will be completed during..the next refueling outages, now scheduled for January 1990 for Unit 1  ;

and September 1990 for Unit 2. Following completion of the modifications, &

motor valves MV-32103 and MV-32105 (and the corresponding Unit 2 valves) will  !

be Type C tested in accordance with Appendix J.  !

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.: C C Wright h he h Conveny October 13, 1989

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E Please contact us if you have any questions related to our response to the subject inspection reports,

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C E Lars in Vice Pres Nuclear Generation c: Regional Administrator III, NRC Senior Resident Inspector. NRC NRR Project Manager, NRC G Charnoff Attachment o

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