ML19254C627

Responds to NRC 790713 Ltr Re Violations Noted in IE Insp Repts 50-416/79-10 & 50-417/79-10.Corrective Actions: Eccentric Tapered Reducer in Suction Piping to West Diesel Fire Pump Has Been Changed

ML19254C627
Person / Time
Site:	Grand Gulf
Issue date:	09/21/1979
From:	Dale L MISSISSIPPI POWER & LIGHT CO.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19254C624	List: ML19254C627
References
NUDOCS 7910170045
Download: ML19254C627 (2)

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9 MISSISSIPPI POWER & LIGHT COMPANY Helping Build Mississippi P. O. B O X 16 4 0, J A C K S O N, MISSISSIPPI 3920Q p  ;.

encouction oceaaT"NT m' 2:

September 21, 1979 @  :-]>

h Offwe of Inspection and Enforcement (o U. S. Nuclear Regulatory Commission ** ~

Region 11 C .,

101 Marietta Street - Suite 3100 D Atlanta, Georgia 30303 ATTENTION: Mr. J. P. O'Reilly, Director

SUBJECT:

Grand Gulf Nuclear Station File 0272/0490/15521/9920 RII: WHM 50-416/417 Supplemental Response to NRC Site Inspection Report 79-10 AECM-79/108 The attached response is additional information to supplement our re-port regarding IE Inspection Report 79-10, submitted to you on July 13, 1979.

Yours truly,

,,4 L &

L. F. Dale Nuclear Project Manager JRF/JDR:pa cc: Mr. N. L. Stampley Mr. R. B. McGehee Mr. T. B. Conner Mr. G. G. Buxton Mr. Victor Stello, Jr., Director Division of Inspection & Enforcement U. S. Nuclear Regulatory Commission Washington, D. C. 20555 i qi, (0

d ' ' '

7910170 i T90.s/o

- Member Middle South Utilities System CIAL COPY

S ADDITIONAL RESPONSE FOR INSPECTION REPORT 79/10 Sa. Deviation item 416/79-10-01 and 417/79-10-01, " Substandard Fire Pump Suction Piping". The eccentric tapered reducer in the suction piping to the west diesel fire pump has been changed to conform to NFPA 20.

Sb. Deviation item 416/79-10-02 and 417/79-10-02, " Unapproved Fire Doors and Fire Barriers of Fire Pump House." Fire rated doors and fire rated f rames have been installed between each fire pump.

Sc. Fire Pump Automatic Sprinkler System. Deviation item 416/79-10-03 and 417/79-10-03, " Standard Sprinkler Ittstallation for Fire Pump House and Diesel Generator Building." We have completed our evaluation of this deviation and estimate the sprinkler system to be extended to cover the entire diesel fire pump rooms by February 1,1980.

Sprinkler protection will be extended to provide 100% coverage in the Unit 1 Diesel Generator Building by February 1,1980.

The work to extend the riser sprinkler head to the ceiling of the elec-tric fire pump room should be completed by February 1,1980.

5d. Deviation item 416/79-10-05: " Smoke Detection Systems Installation De-ficiencies." Our evaluation of the smoke detection system has been completed. We have identified approximately one hundred (100) detec-tors improperly located and expect them to be re-located by December 1, 1979.

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