ML20084C122
| ML20084C122 | |
| Person / Time | |
|---|---|
| Site: | Wolf Creek, Callaway, 05000000 |
| Issue date: | 04/23/1984 |
| From: | Petrick N STANDARDIZED NUCLEAR UNIT POWER PLANT SYSTEM |
| To: | Harold Denton Office of Nuclear Reactor Regulation |
| References | |
| SLNRC-84-72, NUDOCS 8404270101 | |
| Download: ML20084C122 (2) | |
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O SNUPPS Stenderdiaed Nuclear Unit Power Plant System s choke cherry Road Nicholas A. Petrick 88ad N Executive Director April 23,1984 SLNRC 84-72 FILE: 0543 SUBJ:
SNUPPS Technical Specifications use of RHR Suction Relief Valves for Cold Overpressurization Protection Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, D.C. 20555 Docket Nos. STN 50-482 and STN 50-483 Ref: 1. SLNRC 84-29, 2/10/84: SNUPPS Technical Specifications
- 2. ULNRC 792, 4/9/84: Callaway Technical Specifications
- 3. ULNRC 787, 4/5/84: Callaway Plant Technical Specifications - Appeals
Dear Mr. Denton:
~
The referenced letters forwarded changes requested by the SNUPPS '(Callaway and Wolf Creek) utilities to the Standard Technical Specifications that would allow use of the RHR Suction Relief Valves for cold overpressure protection in Modes 4, 5, and 6..Since these submittals, the SNUPPS util-ities and the NRC Reactor Systems Branch have discussed this request on two occasions, a telecon on April 10, 1984 and a meeting on April 13, 1984.
These discussions resulted in the following agreements:
- 1) Technical Specifications: 3.4.9.3 and its associated surveillances, 3.8.1.2, 3.8.2.2, 3.8.3.2, Bases 3/4.1.2, and 83/4.4.9 will be accepted as submitted on a temporary basis until the startup following the first refueling outage (except that the basis will be revised to provide more information on cold overpressure protection).
- 2) The SNUPPS utilities will incorporate administrative controls to independently verify proper RHR suction valve alignment prior to exceeding a primary pressure of 600psig.
The controls will be incor-porated into the Plant Operating Procedures.
- 3) The SNUPPS utilities will evaluate permanent measures to comply with Branch Technical Position 5-1. including but not limited to the fol-lowing:
a) evaluating the use of 2/3 pressure logic signals on each RHR
, suction valve to provide redundancy, f
8404270101 840423 POR ADOCK 05000482 g
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a
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SLNRC 84 72 Page Two b.
evaluating the use of a second interlock such that if both valves in a train are either open or closed, a high pressure signal to one valve will not cause isolation, c.
and evaluating the use of administrative controls for ensuring proper valve alignment based on plant conditions.
The evaluation will be discussed with and submitted formally to the NRC prior to January 1,1985~ and the resulting decision implemented prior to the startup following the first refueling outage.
Very truly yours,
\\<New(
Nicholas A. Petrick JHR/dck/2b1 Attachment cc: J.'Neisler/B. Little, USNRC/ CAL
- W.- Schum/A. Smith, USNRC/WC J. Konklin, USNRC Region.III.
G. L. Koester, KGE D. T. McPhee, KCPL D. F. Schnell, UE d
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