ML20213E610
| ML20213E610 | |
| Person / Time | |
|---|---|
| Site: | Columbia  |
| Issue date: | 09/26/1983 |
| From: | Houston R Office of Nuclear Reactor Regulation |
| To: | Novak T Office of Nuclear Reactor Regulation |
| References | |
| CON-WNP-0656, CON-WNP-656 NUDOCS 8310060589 | |
| Download: ML20213E610 (3) | |
Text
Cistribution
.euemanum RSB R/F RSD P/F: WNP-2 TCOLLins R/F SEP26 y03 AD/Rs Rdg.
BSheron WHodges 85MMXMNX TCottins Docket No.:
50-397 MEMORANDUM FOR:
Thoir.as flovak, Assistant Director for Licensing, DL FR0!!:
R. Wayne Houston, Assistant Director for Reactor Safety, DSI
SUBJECT:
SUPPLEME!TAL SAFETY EVALUATI0tl REPORT (WNP-2)
Plant Name:
WPPSS Nuclear Project No. 2 Docket Nis::ber:
50-397 Licensing Stage:
OL Responsible Branch:
Licensing Branch #2 Project Manager:
R. Auluck DSI Branch Involved:
Reactor Systems Branch Enclosed is the Reactor Systems Branch SSER with regard to deactivation of the steam condensing mode of the RHR at WNP-2. The applicant's proposal is acceptable.
CritalSigned 8y E Wayne Houstcn R. Wayne Houston, Assistant Director for Reactor Safety, DSI l
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I SAFETY EVALUATION REPORT WNP-2 5.4.7 Residual Heat Removal System In a letter dated June 22, 1983 from G.D. Bouchey to the Director, NRR, the Washington Public Power Supply System (WPPSS) stated its intention to deactivate the, steam condensing mode of the RHR system at WNP-2.
The applicant also requested that specific technical specifications which refer to the steam condensing mode of operation be deleted.
The steam condensing mode of the RHR is non-safety related at WNP-2 and no credit is taken for this mode of operation in any safety analyses.
Furthermore, deactivation will not impede the safety function of other safety related I
modes of the RHR system.
Deactiviation of the steam condensing mode is therefore acceptable to us.
The technical specifications related to the steam condensing mode of operation include limiting condition for operation 3.3 4 Tables 3.3.2-1, 3.3.2-2, 3.3.2-3, and 4.3.2.1-1 (item 5 of each table).
These specificati.ons are related to isolation actuation instrumentation which operate valve group 12.
Valve group 12 consists of only one valve, E51-F064 Deactiviation of the steam condensing node invclves locking closed-and remoiing
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power from valve ES1-F064.
This obviates the need for automatic isolation and, therefore deleting t h e se s p e c i f i c a t i o rs i s acceptable.
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