ML17207A821
| ML17207A821 | |
| Person / Time | |
|---|---|
| Site: | Saint Lucie  |
| Issue date: | 02/04/1980 |
| From: | Reid R Office of Nuclear Reactor Regulation |
| To: | Robert E. Uhrig FLORIDA POWER & LIGHT CO. |
| References | |
| NUDOCS 8002190821 | |
| Download: ML17207A821 (6) | |
Text
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Docket No. 50-335 Please provide the informaHon as requested in the enclosure within 30 days of your receipt of this letter.
Sincerely, Distribution:
et fi 8XIWIK NRC PDR RReid FEBRUARY 0 4 ~
L PDR PErickson TERA RIngram NSIC ACRS (16)
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DEisenhut, BGrimes Dr. Robert E. Uhrig Vice President Florida Power 8 Light Company Advanced Syqtqms-8I Technology TJC t
." 0:"Box 529100 '~
Miami, Florida 33152
- Attorney, OELD
Dear Dr. Uhrig:
JHe1temes, AEOD During our review of your December 13, 1979 letter (L-79-347)I on containment purge and venting at St. Lucie, Unit t<o. 1, we determined that additional information was needed.
Original signed bg Robert VII. Reid ~
Robert M. Reid. Chief Operating Reactors Branch ¹4 Division of Operating Reactors
Enclosure:
Request for Additional'nformation cc w/enclosure:
See next page OFFICE $
SURNAME DATE$
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UNITEDSTATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 February 4, 1980 Docket No. 50-335 Dr. Robert E. Uhrig Yice President Florida Power 8 Light Company Advanced Systems Im Technology P. 0.
Box 529100 Miami, Florida 33152
Dear Dr. Uhrig:
During our.review of your December 13, 1979 letter (L-79-347) on containment purge and venting at St. Lucie, Unit No. 1, we determined that additional information was needed.
Please provide the information as requested in the enclosure within 30 days of your receipt of this letter.
Sincene1y,
Enclosure:
Request for Additional Information cc w/enclosure:
See next page Robert W. Beid, Chief Operating Reactors Branch III4 Division of Operating Reactors
Florida Power 8 Lig~Conpany CC:
Robert Lowenstein, Esquire Lowenstein,
- Newman, Reis 5 Axelrad 1025 Connecticut
- Avenue, N.W.
Mashington, D. C, 20036 Norman A. Coll., Esquire t1cCarthy, Steel, Hector 8 Davis 14th Floor, First National Bank Bui1 ding Miami, Florida 33131
-Mr. Jack Shreve Office of the Public Counsel Room 4, Holland Bldg.
Tallahassee, Florida 32304
, Indian River Junior College Library 3209 Virginia Avenue Fort Pierce, Florida 33450
~
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0 REQUEST FOR ADDITIONAL INFORMATION FOR CONTAINMENT PURGE SYSTEM AND CONTAINMENT VENTING SYSTEM FOR ST.
LUCIE DOCKET NO. 50-335 Enclosure 1.
The docketed information as to the design of the purge system, contain-ment venting system, and other Engineered Safety Features (ESF) does not adequately address the following areas.
Please discuss how these designs conform with each item below:
a.
The overriding* of one type of safety actuation signal (e.g.,
radiation) should not cause the blocking of any other type of safety actuation signal (e.g., pressure) to the isolation valves.
b.
Sufficient physical features (e.g.,
key lock switches) should be provided to facilitate adequate administrative controls.
C.
d.
e.
The system-level annunciation of the overridden status should be provided for the containment isolation system and for every safety impacted when an override is active.
Diverse signals should be provided(to initiate isolation of the contaC'nment ventilation system.
S/ecifically, containment high radiation, safety injection actuati".on, and containment high pressure should automatically initiate Containment Ventilation Isolation (CVI).
The instrumentation and control systerh'rovided to initaite ESF should be designed and qualified as safety-grade equipment.
iII The overriding or resetting* of the isolation actuation signal should not cause the automatic motion of any ESF valve.
2.
Provide the process and instrumentation (PAID) and schematic drawings of your purge and vent system and control room heating, ventilation and air conditioning (CRHVAC) system.
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hi Override - The signal is still present, and it is blocked in order to perform a function contrary to the signal.
Reset
- The signal has come and gone, and the circuit is being cleared to return to the normal condition.
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