ML19320A810

Status Deficiency Rept 2 Re Mod to Dragon Valve Manifolds. Review of Application of Valve Manifolds & safety-related Impact Still Under Investigation.Final Rept Will Be Forwarded by 800702

ML19320A810
Person / Time
Site:	Grand Gulf
Issue date:	06/02/1980
From:	Mcgaughy J MISSISSIPPI POWER & LIGHT CO.
To:
References
AECM-80-19, DEFER-800602, NUDOCS 8007020640
Download: ML19320A810 (2)

Text

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l MISSISSIPPI PO'NER & LIGHT COMPANY

] Helpin.' Build Mississippi metRMdd P. O. B O X 1640] Jgpy S QQ,. gly SIS SIP PI 3 9 2 0 5 PRODUCTlON DEP ARTN ENT June 2, 1980 Office of Inspection & Enforcement ,,

U. S. Nuclear Regulatory Comission Region II 101 Marietta St., N. W., Suite 3100 Atlanta, Georgia 30303 Attention: Mr. J. P. O'Reilly, Director

SUBJECT:

Grand Gulf Nuclear Station Units 1 and 2 Docket Nos. 50-416/417 File 0260/15525/15526 PRD-80/06, Status Report #2,

' Modification to Dragon Valve Manifolds AECM-80/119 The deficiency described in this report concerns modifications to certain two and five valve manifolds supplied by Dragon Valves, Inc. The deficiency was investigated in L y of 1977 and filed under Bechtel MCAR-GGNS No. 26. That investigation concluded that the deficiency was not reportable under 10 CFR 50.55(e).

In a recent site inspection, Mr. M. Gouge of your office reviewed the above referenced MCAR. In that inspection of March 6, 1980, Mr. Gouge conclud-ed that this deficiency concerning Dragon Valves was improperly evaluated.

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This inspection and questioning of the rationale used to determine reportability i reopened this issue.

The background information and history of this deficiency was provided to you in our report, AECM-80/69, dated A'pril /.,1980. Our re-evaluation of this matter is as yet incomplete. Valve manifolds involved in this matter are desig-ated with Mark Nos. J-21-2N and J-21-5N, two end five valve manifolds, respec-

tively. Our findings indicate that none of the five valve manifolds are employed in safety related systems. Our findings also indicate that some of the suspect j

l two valve manifolds are employed in the Standby Liquid Control (SLC) System, I a safety related system. We are currently investigating the application of these l valve manifolds at GGNS and the related safety impact of this deficiency. g ll0

. OFFICIAL COPY 80070s Ud .6 ember Middle South Utilities System 3

,a MISSISSIPPI POWER & LIGHT COMPANY ,

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Office of Inspection & Enforcement AECM-80/119 U. S. Nuclear Regulatory Commission Page 2 This matter is being tracked under Bechtel MCAR-GGNS No. 26 and PRD-80/06.

We expect to provide our final report on this matter no later than July 2, 1980.

Yours truly, p J. P. McGaughy, Jr.

Assistant Vice President

' Nuclear Production JGC/JDR:gks cc: Mr. N. L. Stampley e Mr. R. B. McGehee Mr. T. B. Conner Mr. Victor Stello, Jr. , Director Division of Inspection & Enforcement U. S. Nuclear Regulatory Commission Washingt::n, D. C. 20555 i

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