05000416/LER-1997-003, Forwards LER 97-003-01 Re CR Envelope Leakage Potentially Exceeding License Condition 2.C(38) Limit

Forwards LER 97-003-01 Re CR Envelope Leakage Potentially Exceeding License Condition 2.C(38) Limit

ML20211H806
Person / Time
Site:	Grand Gulf
Issue date:	09/30/1997
From:	Hagan J ENTERGY OPERATIONS, INC.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20211H811	List: 05000416/LER-1997-003, Forwards LER 97-003-01 Re CR Envelope Leakage Potentially Exceeding License Condition 2.C(38) Limit
References
GNRO-97-00090, GNRO-97-90, NUDOCS 9710070139
Download: ML20211H806 (2)

LER-2097-003, Forwards LER 97-003-01 Re CR Envelope Leakage Potentially Exceeding License Condition 2.C(38) Limit

Event date:
Report date:
4162097003R00 - NRC Website

text

i Entergy oportions. Inc.

[ l =Entergy g,.?w Fax 001437 2795 ,

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September 30, 1997 Dibi , u,,

U.S. Nuclear Regulatory Commission Mall Station P137 Washington, D.C. 20555 Attention: Document Control Desk

SUBJECT:

Grand Gulf Nuclear Station Docket No. 50-416 License No. NPF 29 Control Room Envelope Leakage Potentially Exceeding

- License Condition 2.C(38) L'mit Final Report

- LER 97-003-01 GNRO 97/00090 '

Gentlemen:

_ By letter dated July 17,1997, GGNS submitted an interim report docketing that License Condition

2.C(38), which govems the Control Room Envelope (CRE) in-leakage rate may have previously been violated <This potential license condition violation was believed to result from missing inner.

seals within electrical conduits that penetrate the CRE boundary. This interim report was submitted based on prudent and conse,vative interpretation of conduit seal field inspection data available at the time, for certain electrical conduits that penetrate the CRE boundary. ' -

Our interim response stated that conduit seal inspection activities were ongoing and were

- expected to be completed by August 29,1997. Upon completion of these inspection activities, we comniitted to supplement the interim report with a follow up report containing the latest information identified from the inspection activities. in accordance with the requirement of License Condition 2.F the follow up report, which is a final report concoming this issue is attached.

Revised text incorporated subsequent to submittal of the interim report is denoted by revision bars in the right-hand margin.

- We have completed inspection of 100% of the inner seals for electrical conduits that penetrate the CRE boundary. Areas where a seal was either missing or presence of a seal could not be - -

- confirmed due to obstructions were conservatively. sealed. As previously stated in our interim I report,'no current safety or habitability concems exist or are believed to have previously existed due to this condition, y wm mar S

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Should you have any questions or require additional clarification of the information herein, please contact the licensee's representative listed on the attached report.

Yours truly, JJH/CEB hSYY1 attachment Report 50-416/37 03 01

- cc: Ms. J. L. Dixon-Herrity, GGNS Senior Resident (w/a)

Mr L J. Smith (Wise Carter)(w/a)

Mr. N. S. Reynolds (w/a)

Mr. H. L. Thomas (w/o)

Mr. J. W. Yelverton (w/a) ,

Mr. Ellis W. Merschoff(w/a)

Regional Administrator U.S. Nuclear Regulatory Commission Region IV 611 Ryan Plaza Drive Suite 400 Arlington,TX 76011 Mr. J. N. Donohew, Project Manager (w/2)

Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Mall Stop 13H3 Washington, D.C. 20555

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