ML20141M356
| ML20141M356 | |
| Person / Time | |
|---|---|
| Site: | Grand Gulf  |
| Issue date: | 08/06/1992 |
| From: | Cottle W ENTERGY OPERATIONS, INC. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| GNRO-92-00100, GNRO-92-100, NUDOCS 9208110388 | |
| Download: ML20141M356 (4) | |
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Entergy Opsrations,Inc.
ENTERGY m.m a i G De-an, M5 M '50
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August 6, 1992 wo
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U.S. Nuclear Regulatory Commission Mail Station P1-137 Washington, D.C.
20555 Attention:
Document Control Desk Subj ect:
Grsnd Gulf Nuclear Station Unit 1 Docket No. 50-416 License No. NPF-29 Quarterly Status Report for Period Ending June 30, 1992 -
Degraded Core Accident Hydrogen Control Program GNRO-92/00100 Centlemen The Grand Gulf Nuclear Station (GGNS) Unit 1 Opersting License requires Entergy Operations, Inc. to submit quarterly reports on the status of the
" Degraded Core Accident Hydrogen Control Program." In response to that-requirement, Entergy Operations, Inc. submits he att sened report covering the period April 1,1992 throuEh June 30, 1992.
Should you have an:r questions concerning this report, please contcet Jewel Summers at (601) 437-2149.
Yours truly, wy M
WTC/JS/mtc attachment: Quarterly Status Report for Period Ending June 30, 1992 cc:
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s August 6, 1992 GNRO-92/00100 Page 2 of 3 cci Mr. D; C. Hintz (w/a)-
Mr. J. L. Mathis (wla)'
Mr. R. 3. McGehee-(w/a)
Mr. N. S. Reynolds (w/a)
Mr. H. L. Thomas.(w/o)-
Mr. Stewart D. Ebnetcr (w/a)
Regional Administrator
- i U.S. Nuclear Regulatory. Commission Region II
.101 Marietta St., N.W..--Suite 2900-
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i Atlanta, Geord a 30323; Mr. P. V. O'Connor, Project Manager (w/2) -
Office of Nuclear Reactor' Regulation-U.S. Nuclear Regulatory Commission ~
Mail Stop 13H3 Washington. D.C. ;20555.
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Attachment to GN.10-92/00100-e Quarterly Status Report for Period _Ending June 30, 1992
" Degraded Core Accident Hydrogen Control Program" 1.0 Introduction 3-This quarterly status report is submitted-to comply with the Grand Gulf Nuclear Station (GGNS) Unit 1 Operating License.
This-requirement-specifies that Entergy Operations Inc.-should provide quarterly raports outlining the status _of the ongolag research program to address degraded core hydrogen control requirements.
This report covers the second calendar quarter of 1992,Eending June 30, 1992.
This report normally includes' brief summaries 1of t..y submittals made by Entergy-Operstions, Inc. during the quarter, along with summaries of any meetings between the-NRC Staff and Entergy Operations. _Entergy.
Operations, Inc. is part icipating:in the-Hydrenen Control Owners' Group (HCOG) which is conducting genaric research and analyses _to-
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. resolve the degraded core hydrogen control' issue.- Since:the work completed by HCOG psrallels Entergyioperations' program-to resolve this issue, this report also includes summaries of meetings between the HCOG and the NRC. Any meetings summatized in this report do not e
reflect a formal HC00 position with respect to any issue,-but represent Entergy Operations' interpretation of those meetings. -
2.0 Summary of Entergy Operationc ; Inc. =Submittals Entergy Operations made no submittals to the.NRC on the Degraded Core-Accident Hydrogen Control Program during this calendar; quarter of
.1992.
3.0 Summary of HCOG and -NRC Meetings No formal meetings were held between Entergy Operations or HCOG and.
the NRC_during this quarter.--
'4.0 Hydrogen Lontrol' Program Status The-generic research and generic analyses conducted by'HCOG to resolve-the degraded core hydrogen control: issue are-complete..In accordance witn this, the NRC' issued atSafety_ Evaluation Report (SER) on the genaric Hydrogen Control Program <on-August 10,'1990. LThe SER
' documented F e NRC's review of the_ generic Hydrogen Control Program and delinr ed which issues were considered closed by.the-JRC and' which required additional' action by-_the HCOG and/or the individual:
utilities.
Cu 8051/SNLICFLR --4
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Attachment to GNRO-92/00100 l'
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The Hydrogen Control 0wners' Group-submitted documents HGN-137 and
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HGN-138,Ldated. April 29 and 30, 1991,.respectively, in response to NRC concerns.
The issues involved certain criteria :for pressure survivability evaluations, acceptable accident sequence for Hydrogen Generation. Events (HGEs), and theLavailability of containment sprays or unit coolers during an HGE.. In July 1991, the. staff indicated that review of these submittals had been initiated.
5.0 Status of Significant Issues The HCOG still awaits formal acceptance of the submittals referenced in Section 4.0 above so that the Final _ Generic Hydrogen Control Accepted Topical ~ Report may'be issued.
Issuance of the-Topical Report-is necessary to suable each'HCOG cnember to submit"its. plant-specific.
l-Hydrogen Firal-Analysis, as required by 10CFR50.44.
l 6.0' Planned Activities for'the-Third Quarter 1992-Following acceptable resolution"of--issuesErelating:to the' generic SER, Entergy Operations will review its. schedule for submittal of the'GGNS:
Final Hydrogen yontrol-Repott, : identify -_the remaining work necessary.
-for this submittal, and initiate work on the remaining-plant-specific tasks.
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