ML20213E542
| ML20213E542 | |
| Person / Time | |
|---|---|
| Site: | Columbia  |
| Issue date: | 08/09/1983 |
| From: | Houston R Office of Nuclear Reactor Regulation |
| To: | Novak T Office of Nuclear Reactor Regulation |
| References | |
| CON-WNP-0628, CON-WNP-628, TASK-2.K.3.18, TASK-TM NUDOCS 8308170160 | |
| Download: ML20213E542 (2) | |
Text
,
AUG 0 91983 Docket No.:
50-397 MEMORANDUM FOR: Thomas Novak, Assistant Director for Licensing. DL FROM:
R. Wayne Houston, Assistant Director for Reactor Safety, DSI
SUBJECT:
SUPPLEMENTAL SAFETY EVALUATION REPORT (WNP-2)
Plant Name:
WPPSS Nuclear Project No. 2 Docket Number:
50-397 Licensing Stage:
OL Responsible Branch:
Licensing Branch f2 Project Manager:
R. Auluck DSI Branch Involved: Reactor Systems Branch Enclosed is the Reactor Systems Branch SSER with regard to THI Action Plan Item II.K.3.18 at WNP-2. The conceptual design proposed by the applicant is acceptable.
R. Wayne Houston, Assistant Director for Reactor Safety Division of Systems Integration
Enclosure:
As stated DISTRIBUTION cc:
R. Mattson N
D. Eisenhut RSB Rdg.
A. Schwencer RSB Plant R. Auluck TCollins Section 8 Members, RSB Collins Rdg.
RSB Section Leaders WHodges BSheron AD/RS Rdg.
CONTACT:
T. Collins, x24478 l
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SAFETY EVALUATION REP,0RT WNP-2 TMI ITEM II.K.3.18 In a letter dated July 26, 1983, from G.
Bouchey to the Director, NRR, the Washington Public Power Supply System committed to modifying the Automatic Depressurization System (ADS) at the WNP-2 plant.
The design modification will bypass the high dry-well pressure trip portion of the existing ADS logic and also add a manually operated inhibit switch.
This modification is Option 2 of the BWR Owners Group Report provided in reference 1 and has been approved by the staff as discussed in reference 2.
The applicant's conceptual design is acceptable to us with the following conditions:
(1) Use of the manual inhibit switch must be addressed in the plant emergency procedures; (2) surveillance requirements for the inhibit switch must be included in the plant technical specifications; and (3) the modifications must b e c o m--
plete prior to startup f'o l l o w i n g the first refueling outage.
References 1.
Letter from T.
J.
Dente toD. G.
Eisenhut, "NUREG-0737 Item II.K.3.18e Modification of Automatic Depressurization System Logier" dated October 28, 1982 2.
Memorandum from R.
W.
Houston to G.
Lainase " Evaluation of BWR Owners Group Generic Response to Item II.K.3.18 of NUREG-0737, Modification of Automatic Depressurization System Logic," dated April 1,
1983