ML20151X337
| ML20151X337 | |
| Person / Time | |
|---|---|
| Site: | Quad Cities  |
| Issue date: | 08/16/1988 |
| From: | Ross T Office of Nuclear Reactor Regulation |
| To: | Bliss H COMMONWEALTH EDISON CO. |
| Shared Package | |
| ML20151X342 | List: |
| References | |
| RTR-REGGD-01.097, RTR-REGGD-1.097 GL-82-33, TAC-51124, TAC-51125, NUDOCS 8808250326 | |
| Download: ML20151X337 (4) | |
Text
1 s...,jo, UNITED STATES 8
NUCLEAR REGULATORY COMMISSION g
r a WASHINGTON, D, C,20665 g
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August 16, 1988 Docket Nos.:
50-254 and 50-265 Mr. Henry E. Bliss Director af Nuclear Licensing Comonwealth Edison Company Post Office Box 767 Chicago, Illinois 60690
Dear Mr. Bliss:
SUBJECT:
CONFORMANCE OF POST ACCIDENT MONITORING INSTRUMENTATION AT QUAD CITIES WITH REGULATORY GUIDE 1.97 (TAC N05. 51124 & 51125)
Re:
(a) Letter from J.R. Wojnarowski (CECO) to D.B. Vassallo (NRC) dated August 1, 1985 (b) LetterfromT.M.Ross(NRC)toL.D.Butterfield(Ceco) dated Septe.aber 3,1987 (c) letterfromI.M. Johnson (CECO) tot.E.Murley(NRC) dated December 17, 1987 (d) Letter T.M. Ross (NRC) to L.D. Butterfield (CECO) dated January 14, 1988 In response to Generic Letter 82-33, Comonwealth Edison Company (CECO) submitted reference (a) and several other letters which addressed Quad Cities compliance with Regulatory Guide (R.G.) 1.97, "Instrumentation for Light-Water Cooled Nuclear Power Plants to Assess Plant and Environs Conditions During and Following an Accident." A detailed review of these letters was initially conducted by EG&G Idaho, Inc. and issued as an interim report by reference (b),
which also requested CECO comments. CECO replied with additional infonnation and/or consnents in reference (c) to each of the reference (b) open items. A final technical review of all relevant correspondence to date was performed by EG&G Idaho Inc. and docu:nented in Technical Evaluation Report (TER)
EGG-NTA-7761 (March 1988). This TER is provided as Attachment 1 to of this letter. We have reviewed EG&G's TER and concur with the conclusion that Ceco either confonns to, or has adequately justified deviations from, R.G.1.97 (Revision 2), except for the neutron flux variable.
Our Safety Evaluation Report (SER) is provided as Enclosure 1.
Existing neutron flux inonitoring instrumentation at Quad Cities conforms to the Category 1 criteria of R.G.1.97 except for seismic and environmental qualification.
It is the NRC staff's position that the infonnation provided by neutron flux monitoring instrumentation is needed by operators to properly evaluate reactivity control. Consequently, CECO should install neutron flux monitoring instrumentetion which fully complies with the Category 1 criteria p=m many 1
o Auaust 16, 1988
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. [
3 of R.G. 1.97.
However, based upon the availability of alternate irstrumentation, we concur that the existing neutron flux monitoring instrumentation is acceptable for interim operation pending satisfactory implementation of a fully qualified system. Within sixty days after receipt of this letter, CECO will develop and submit to us an appropriate implementation schedule which addresses seismic and environmental qualification of post accident neutron monitoring instrumentation. This submittal shall also address the concerns broached by the staff regarding power supplies in reference (d).
Sincerely, J3 Thierry Ross, Project Manager Project Directorate III-2 Division of Rea tor Projects - III, IV, Y and Special Projects i
Enclosures:
i As stated cc:
See next page Barry Marcus 1
DISTRIBUTION:
NJ BGrimes NRC & Local PDRs TBarnhart(8)
PDIII-2 r/f WJones WForney EButcher GHolahan NTrehan
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DCrutchfield JStewart LLuther ACRS (10)
TRoss GPA/PA PDIII-2 plant file ARM /LFMB l
OGC-Rockville EJordan DHagan O Fol
- See previous concurrences i
PDI!!-2"LA PDIII-2:PM eJIII-2:AD
- Lluther
- TRoss WForney l
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8/12/88 8/12/88 f//$/88
r of R.G. 1.97. However, based upon the availability of alternate
-instrumentation, we concur that the existing neutron flux monitoring instrumentation is acceptable for interim operation pending satisfactory implementation of a fully qualified system. Within sixty days after receipt of this letter, Ceco will develop and submit to us an appropriate implementation schedule which addresses seismic and environmental qualification of post accident neutron monitoring instrumentation. This submittal shall also address the concerns broached by the staff regarding power supplies in reference (d).
Sincerely, h
M Thierry Ross, ect Manager l}
Project Directorate III-2 Division of Reactor Projects - III, IV, Y and Special Projects
Enclosures:
As stated cc: See next page Barry Marcus
r 4
4 Mr. Henry E. Bliss Quad Cities Nuclear Power Station Coninonwealth Edison Company Units 1 and 2 CC:
Mr. Stephen E. Shelton Vice President Iowa-Illinois Gas and Electric Company P. O. Box 4350 Davenport, Iowa 52808 Michael I. Miller, Esq.
Sidley and Austin One First National Plaza Chicago, Illinois 60603
)
Mr. Richard Bax Station Manager Quad Cities Nuclear Power Station j
22710 206th Avenue North Cordova, Illinois 61242 Resident Inspector U. S. Nuclear Regulatory Comission 22712 206th Avenue North Cordova, Illinois 61242 Chainnan Rock Island County Board of Supervisors 1504 3rd Avenue l
Rock Island County Offfice Bldg.
l Rock Island, Illinois 61201 l
l Mr. Michael E. Parker, Chief l
Division of Engineering Illinois Depsrtment of Nuclear Safety 1035 Outer Park Drive, Springfield, Illinois 62704 Regional Akinistrator, Region III U. S. Nuclear Regulatory Coasnission 799 Roosevelt Road, Bldg. f4 Glen Ellyn, Illinois 60137 I
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