ML20059E671

Submits Confirmatory Response to NRC Bulletin 93-003 Re Resolution of Issues Related to Reactor Vessel Water Level Instrumentation in BWRs

ML20059E671
Person / Time
Site:	Hope Creek
Issue date:	12/28/1993
From:	Hagan J Public Service Enterprise Group
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
IEB-93-003, IEB-93-3, NLR-N93205, NUDOCS 9401120138
Download: ML20059E671 (3)

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company l l Joseph J. Hagan Public Sentice Electric and Gas Company P.o. Box 236, Hancocks Bridge, NJ 08038 609-339-1200 wce e,ewient waw opecons

! DEC 2 81993 NLR-N93205 United States Nuclear Regulatory Commission Document Control Desk

Washington, DC 20555 l

Gent)emen; i l 1 CONFIRMATORY RESPONSE TO BULLETIN 93-03 '

RESOLUTION OF ISSUES RELATED TO REACTOR VESSEL j WATER LEVEL INSTRUMENTATION IN BWRs FACILITY OPERATING LICENSE NPF-57

HOPE CREEK GENERATING STATION DOCKET NO. 50-3S4 1

NRC Bulletin 93-03 requested that licensees complete hardware modifications to address the potential for level instrumentation system errors due to the presence of noncondensable gases in level instrumentation reference legs. The Bulletin requested that hardware modifications be implemented at the next cold shutdown beginning after July 30, 1993. Bulletin 93-03 further requested-that licensees submit a report "within 30 days of completion of the requested hardware modifications." The report should describe the modifications and confirm their completion.

This letter fulfills this reporting requirement.

Hope Creek Station was brought to cold shutdown on December 1, 1993. This was the first cold shutdown since May 16, 1993. In accordance with Bulletin 93-03, a hardware modification was implemented to address the potential for noncondensable gas buildup in level instrumentation reference legs. A "Back-fill" system was installed which provides a feed from the Control Rod Drive (CRD) system to each of the four Reactor Water Level Instrumentation reference legs. The flow injected from the CRD system will serve to purge noncondensable gases from the reference legs during normal operation to prevent loss of inventory in the reference legs during postulated rapid depressurization events. Post-installation testing has been successfully completed and Hope Creek Station has returned to power operation.

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Document Control Desk- 2 NLR-N93205 i

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Should you have any further questions in this regard,'please do not hesitate to contact us.

Sincerely,

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Attachment (1)

Affidavit C Mr. J. Stone (Acting Hope Creek Licensing Project Manager)

U. S. Nuclear Regulatory Commission ~ ,

one White Flint North 11555 Rockville Pike Rockville, MD 20852 Mr. C. Marschall USNRC Senior Resident Inspector Mr. T. T. Martin, Administrator. : Region I U. S. Nuclear Regulatory. Commission 475 Allendale Road King of Prussia, PA 19406 Mr. K. Tosch, Manager IV NJ Department of Environmental Protection Division of Environmental Quality Bureau of Nuclear Engineering CN 415 Trenton, NJ 08625

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. REF: NLR-N93205 STATE OF NEW JERSEY

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COUNTY OF SALEM )

J. J. Hagan, being duly sworn according to law' deposes and says:

I am Vice President - Nuclear Operations of Public Service Electric and Gas Company, and as such, I find.the matters set forth in the above referenced letter,'concerning the Hope Creek Generating Station, are true to the best of my knowledge, information and belief.

Subscribed and Sworn to before me l thisc _ day of)lArcanh/A ,1993 -

v bH A bel _)h m tt n hotaryPublicofNewJersey .

KIMBERLY JO BROWN My Commission expires on f}0JARY PUDilC OF NEWJERSEY_ _ _

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