ML20053E758
| ML20053E758 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 05/27/1982 |
| From: | Burwell S Office of Nuclear Reactor Regulation |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| TASK-2.B.3, TASK-TM NUDOCS 8206100020 | |
| Download: ML20053E758 (5) | |
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NAY 2 71981 Docket Nos.:
50-445 and 50-446 j
APPLIC ANT: Texas Utilities Generating Company FACILITY:
Comanche Peak Steam Electric Station, Units 1 and 2 i
SUBJECT:
SUMMARY
OF EETING ON POST-ACCIDENT SA@ LING SYSTEM -
TMI ACTION PLAN ITEM II.B.3 l
Sumary A meeting was held at NRC Headquarters, 7920 Norfolk Avenue, Bethesda, Maryland on Tuesday, April 27, 1982. The meeting was requested by the applicant to seek clarification on the staff requirements concerning the post-accident sampling systems (PASS); THI Action Plan Item II.B.3.
Specifically, the applicant requested a discussion on the staff requirements concerning availability of power for electrically powered components of the PASS and the assumption of a loss of of fsite power.
The meeting attendance is given in Enclosure 1.
i Meeting Minutes i
The applicant requested a discussion on the staff statement in NUREG-0797, l
Supplement No. 2 of the SER page 22-3, item 2, which states:
"2.
Verify that all electrically powered components associated with post-accident sampling are capable j
of being supplied with power and operated, within i
30 minutes of an accident in which there is core degradation, assuming loss of of fsite power."
The staff responded that the requirement could better be stated as follows:
i "2.
Verify that the post-accident sampling system is capable i
of acquiring the samples and completing an analysis on these samples within three hours after a decision to j
sa'wple is made, assuming a loss of offsite power."
j In most stations this becomes a requirement that electrical power be available j
to draw the samples and to operate the analysis system.
i The applicant described the Comanche Peak PASS system. The power recuirements for the sample acquisition systen and the laboratory are presently supplied by l
the balance-of-plant power supply. The power requirements for the sample omerp
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o Texas utilities Generating company MAY 2 71982 acquisition system are minimal and may be supplied by a battery system. The power requirements for the laboratory are greater, and the applicant questions the wisdom of loading this on the station diesel generators. This design change would also be a major backfit to the as-built design.
The staf f responded that it had no requirement that the PASS must be provided with a safety grade power source. The staff only assumes that in the event of a :najor accident, both turbine generators may be out of service or may be lost, and that the grid they supply may also be lost.
In that event, the PASS should retain the capability to take and analyze samples.
In further discussion, the staff commented it would have an open mind to arguments that the 138 kv offsite source might not be lost or might be restored within an acceptable time. We also discussed developing an alternate analysis capability, blacking-eut non-essential circuits in the laboratory, and the use of mobile generating units.
The applicant will study how the staff requirements may impact the Comanche Peak PASS design and either submit a response or request further discussion.
At the close of the meeting the staff gave the applicant two papers for i nformation.
- 1) Post-Accident Sampling Guide for Preparation of a Procedure to Estimate Core Damage, prepared by the NRC staff.
- 2) Evaluation of GE and SEC Chemical Procedures for Postaccident Analysis of Reactor Coolant Samples, Novent>er 1981, prepared by Exxon Nuclear Idaho Company for the HRC.
Original signcd by:
Spottswood Burtoll S. B. Burwell, Project Manager Licensing Branch No.1 Division of Licensing Encl osure:
Attendince List cc w/ encl.: See next page
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OFFICIAL RECORD COPY usam mi-swuo gac ronu sis oo*> Nncu oua
.c Mr. R. J. Gary' Executive Vice President and General Manager Texas Utilities Generating Company 2001 Bryan Tower i
Dallas,. Texas 75201 Mr. Robert G. Taylor cc: Nicholas S. Reynolds, Esq.
Resident Inspector / Comanche Peak Debevoise & Liberman Nuc. lear Power Station 1200 Seventeenth Street, N. W.
c/o U. S. Nuclear Regulatory Washington, D. C.
20036 Commission P. O. Box 38 -
Spencer C. Relyea, Esq.
Glen Rose, Texas 76043 Worsham, Forsythe & Sampels 2001 Bryan Tower Mr. John T. Collins
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Dallas, Texas 75201 U. S. NRC, Region IV-611 Ryan Plaza Drive Mr. Homer C. Schmidt Suite 1000 Manager - Nuclear Services Arlington, Texas 76011 Texas Utilities Services, Inc.
2001 Bryan Tower Dallas, Texas 75201 Mr. H. R. Rock Gibbs and Hill, Inc.
393 Seventh Avenue New York, New York 10001 Mr. A. T. Parker Westinghouse Electric Corporation P. O. Box 355 i
Pittsburgh, Pennsylvania 15230 David J. Preister
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l Assistant Attorney General Environmental Protection Division P. O. Box 12548, Capitol Station Austin, Texas 78711 Mrs. Juanita Ellis, President Citizens Association for Sound Energy 1426 South Polk Dallas, Texas 75224 b
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ENCLOSURE 1 MEETING ATTENDANCE MEETING ON COMANCHE PEAK POST-ACCIDENT SAMPLING SYSTEM NRC Staff Texas Utilities Services, Inc.
S. B. Burwell H. C. Schmidt V. Benaroya F. W. Madden C. McCracken R. W. Haskovec J. Wi ng D. M. Rohrer 1
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a; MEETING
SUMMARY
MAY 2 71982 (Doculie~ntTontrol (50-445)&[50-14D o
t fRC PDR L PDR TERA NSIC LBil Rdg.
MRushbrook Project Manager S. B. Burwell Attorney, OELD OIE Regional Administrator, Region IV PARTICIPANTS (NRC):
S. B. Burwell V. Benaroya C. McCracken J. Wing C. Rohrer a