ML19350A861
| ML19350A861 | |
| Person / Time | |
|---|---|
| Site: | Big Rock Point File:Consumers Energy icon.png |
| Issue date: | 02/27/1981 |
| From: | Crutchfield D Office of Nuclear Reactor Regulation |
| To: | Hoffman D CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| References | |
| LSO5-81-02-065, LSO5-81-2-65, NUDOCS 8103170222 | |
| Download: ML19350A861 (5) | |
Text
'
',, s
- e...
"r.
IINITI D STATCr 1111L : L/ it REGUL ATORY CO:.. 'IS0 TON d/l i'
~;
,g q
W A% HIP.'Gi f '*J. Il C. 2CES~
4 5
~
Docket No. 50-155 FEB 2 71981 LS05-81-02-065 Mr. David P. Hoffman Nuclear Licensing Administrator Consumers Power Company 1945 W. Parnall Road Jackson, Michigan 49201
Dear Mr. Hoffman:
We are continuing our review of the mechanical operability of containment purge and vent valves for the Big Rock Point Plant and have found that additional information described in the enclosure to this letter is needed. We request your response within 45 days of the receipt of this letter.
Sincerely, A :1 Dennis M. Crutchfield, ief Operating Reactors Branch #5 Division of Licensing
Enclosure:
Request for Additional Information cc w/ enclosure:
See next page 1
'$ \\*
C f r\\\\
C e,t e%
003 u
\\
j 1
1910817 0 W9
E" Mr. David P. Hoffman cc Mr. Paul A. Perry, Secretary U. S. Environ:nental Protection Consumers Power Cogany Agency 212 West Michigan Avenue Federal Activities Branch Jackson, Michigan 49201 Region V Office ATTN: EIS COORDINATOR Judd L. Bacon, Esquire 230 South Dearborn Street Consumers Power Co@any Chicago, Illinois 60604 212 West Michigan Avenue
' Jackson, Michigan 49201 Herbert Grossman, Esq., Chairman Atcmic Safety and Licensing Board Joseph Gallo, Esquire U. S. Nuclear Regulatory Comission Isham, Lincoln & Beale Washington, D. C.
20555 1120 Connecticut Avenue Room 325 Dr. Oscar H. Paris Washington, D. C.
20036 Atomic Safety and Licensing Board U. S. Nuclear Regulatory Comission Peter W. Steketee, Esquire Washington, D. C.
20555 505 Peoples Building Grand Rapids, Michigan 49503 Mr. Frederick J. Shon Atomic Safety and Licensing Board Alan S. Rosenthal, Esq., Chairman U. S. aclear Regulatory Comission Atomic Safety & Licensing Appeal Board Washmston, D. C.
20555 U. S. Nuclear Regulatory Comission Washington, D. C.
20555 Big Rock Point Nuclear Power Plant ATTN: Mr. C. J. Hartman Mr. John O'Ne.ill,11 Plant Superintendent Route 2, Box 44 Charlevcix, Michigan 49720 Maple City, Michigan 49664 Christa-Maria Charlevoix Public Library Koute 2, Box 100C 107 Clinton Street Charlevoix, Michigan 49720 Charlevoix, Michigan William J. Scanlon, Esquire Chairman 2034 Pauline Boulevard Caunty Board of Supervisors Ann Arbor, Michigan 48103 Charlevoix County Charlevoix, Michigan 49720 Resident Inspector -
Big Rock Point Plant Office of the Governor (2) c/o U.S. NRC Room 1 - Capitol Building RR 63, Box 600 Lansing, Michigan 48913 Charlevoix, Michigan 49720 Director, Criteria and Standards Mr. Jim E. Mills Civision Route 2, Box 108C Office of Radiation Programs Charlevoix, Michigan 49720 5 (ANR-460)
U. 5. Environmental Protection Thomas S. Moore Agency Atomic Safety & Licensing Appeal Board Washington, D. C.
20460 U. S. Nuclear Regulatory Comission Washington, D. C.
20555 b
.m
V' S.' 7 jyi Mr. David P. Hoffman
\\
t CC Dr. John H. Buck Atomic Safety and Licensing Appeal Board U. S. Nuclear Regulatory Comission Washington, D. C.
20555 Ms. JoAnn Bier 204 Clinton Street
'Charlevoix, Michigan 49720 l
l 9
4 4
4 l
l t
l f
1
.,_.,,,,--..,,._4
~,,....-,,,_.,,,,,-_,,-._,,.,,n,,
i e
ENACSME REQUEST FOR ADDITIONAL INFORMATION BIG ROCK POINT NUCLEAR PLANT CONTAINMENT PURGING DURING NORMAL PLANT OPERATION MECHANICAL OPERABILITY DEMONSTRATION 1.0 Allis Chalmers 24.0 Butterfly Valves 1.1 Describe the extent to which the valve assembly is seismically qualified?
1.2 Describe the extent to which the pilot solenoid valves are seismically qualified and environnentally qualified for long tern exposure to the normal plant environment. If the purge valves are to be operative post-LOCA, describe the extent to which the solenoid valves are environmental-ly cualified for the LOCA environment. Do the elastomeric parts, sole-noids, etc. have a qualified design life where par 1 odic replacement of parts is required?
1.3 Describe the extent to which the operators are seismically qualified and environmentally qualified for long term exposure to the normal plant en-vi ronment? If the purge valves are to be operative cost-LOCA, describe the extent to which the operators are environmentally qualified for the LOC A environment. Do the elastomeric parts in the coerator have a quali-fied design life where periodic replacement is required?
1.4 Do the elastoneric parts in the valve body have a qualified design life?
Are they required to be replaced periodically?
1.5 Have the manufacturer's recommended preventive maintenance instructions (lubrication, etc.) beer, reviewed for the valve, operator and solenoids and are they being followed?
1.6 Provide an assessnent of the structural capability of any ducting or pip-ing in the purge system which is upstrecn or downstream of the valves and is exposed to the flow condi~ tion associated with the LOCA and the seismic ev er.t.
The staff is particularly interested in the effects that loose debris from the pipe or duct system may have on the closure capability of these valves.
2.0 Atwood & Morril 24.0" Swina Check Valves 2.1 Describe the extent to which the valve assembly is seismically qualified?
2.2 Describe the extent to which the pilot solenoid valves are seismically cualified and environmentally qualified for long term exposure to the normal plant environnent. If the purge valves arg to be operative post-LOCA, describe the extent to whi~ch the solenoid valves are environmental-ly cualified for the LOCA environment. Do the elastomeric parts, sole-noids, etc. have a qualified design life where periodic replacement of parts is required?
T 2.3 Describe the extent to which the operators are seismically qualified and environeentally qualified for long term exposure to the normal plant en-vi ron:nent? If the purge valves are to be operative pos+ LOCA, describe the extent to which the operators are environmentally qualified for the LOCA environment. Do the elastomeric parts in the operator have a cuali-fied design life where periodic replacement is required?
2.4 Do the elastomeric parts in the valve body have a qualified design life?
Are they required to be replaced periodically?
2.5 Have the manufacturer's recommended preventive maintenance instructions (lubrication, etc.) been reviewed for the valve, operator and solenoids and are they being followed?
2.6 Provide an assessment of the structural capability of any ducting or pip-ing in the purge system which is upstream or downstream of the valves and is exposed to the flow condition associated with the LOCA and the seismic event. The staff is particularly interested in the effects that loose debris from the pipe or duct system may have on the ::losure capability of these valves.
{
-ew-
,_ _