ML17278B165
| ML17278B165 | |
| Person / Time | |
|---|---|
| Site: | Columbia  |
| Issue date: | 01/06/1987 |
| From: | Sorensen G WASHINGTON PUBLIC POWER SUPPLY SYSTEM |
| To: | Adensam E Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML17278B166 | List: |
| References | |
| GO2-87-002, GO2-87-2, TAC-64358, NUDOCS 8701140436 | |
| Download: ML17278B165 (10) | |
Text
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ACCESSION NBR: 8701 140436 DQC. DATE: 87/01/06 NOTARIZED: YES DOCKET FACIL:50-397 WPPSS Nuclear Pro Ject Unit 2 Washington Publi c Powe 05000397 AUTH. NANE AUTHOR AFFILIATION SORENSEN, Q.'C.
Washington Public Power Supply System RECIP. NANE RECIPIENT AFFILIATION OPFice oF Nuclear Reactor Regulations Direc tor (post 851125 ADENSAN E. Q.
BWR Prospect Direc+orate 3
SUBJECT:
Application for amend to License NPF-21 I changing Tech Sp c
3/4. f. 5> Figures
- 3. 1. 5-1 5 3. 1. 5-2 re standby liquid control sos to re(zlect increase in sodium pentaborate decahgdrate solution concentrations.
Fee paid.
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Washington Public Power Supply System P.O. Box 968 3000 George Washington Way Richland, Washington 99352 (509) 372-5000 January 6, 1987 G02-87-002 Docket No.
50-397 Director of Nuclear Reactor Regulation Attn:
Ms.
E.
G.
- Adensam, Project Director BWR Project Directorate No.
3 Division of BWR Licensing U.S.
Nuclear Regulatory Comission Washington, D.C.
20555 Dear Ms.
Adensam:
Subject:
NUCLEAR PLANT NO.
2 OPERATING LICENSE NPF-21, REQUEST FOR AMENDMENT TO TECHNICAL SPECIFICATION 3/4.1.5, FIGURE 3.1. 5-1 AND 3.1.5-2, STANDBY LIQUID CONTROL SYSTEM
References:
- 1) Letter, G02-86-565, G.
C.
Sorensen (SS) to E.
G.
Adensam (NRC), "Anticipated Transient Without Scram Implementation Schedule",
dated June 19, 1986
- 2) Letter, G02-85-718, G.
C. Sorensen (SS) to W.
R.
Butler (NRC),
Same Subject, dated October 14, 1985
- 3) NEDE-31096P, "Anticipated Transient Without Scram,
Response
to NRC ATWS Rule 10CFR50.62",
dated December 1985
- 4) Letter, G. Lainis (NRC) to T.
A. Pickens (BWR Owners'roup),
"Acceptance for Referencing of Licensing Topical Report NEDE-31096P; Anticipated Transient Without Scram;
Response
to NRC ATWS Rule, 10CFR50.62",
dated October 21, 1986 In accordance with the Code of Federal Regulations, Title 10, Parts
- 50. 90 and
- 2. 101, the Supply System hereby
} equests an amendment to the WNP-2 Technical Specifications.
Specifically, the Supply 'System is requesting an increase to the sodium pentaborate decahydrate solution concentrations as specified in 3/4. 1.5, Standby Liquid Control System (SLC) Surveillance Requirements.
As committed to in Reference 2, the Supply System will be upgradi ng the SLC System at the next refueling outage in order to comply with the ATWS rule requirements 10CFR50.62(c),
4.
The ATWS requirements are that the SLC System be capable of injecting at a minimum flow capacity and boron content equivalent in control capacity to 86 gpm of 13 weight percent sodium pentaborate solution.
Accordingly, Section 3/4. 1. 5 of the WNP-2 Technical Specifications must be changed as attached.
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E.
G.
Adensam Page Two January 6,
1987 RE(VEST FOR AMEND. TO TS - STANDBY LI(UID CONTROL SYSTEM This request is submitted in anticipation of the work being started and completed during the Spring 1987 refueling outage.
The intent is to allow adequate time for Staff review and approval and arrange for release of the changed specification upon completion of the modification.
The Supply System has been utilizing the BWR. Owners'roup Licensing Topical Report (Reference
- 3) in determining equivalency to satisfy the requirements of 10CFR50.62(c),4 and ensure reliability of operation.
The modifications of the WNP-2 SLC System design are in compliance with the recommendations from the referenced Topical Report which provides a
justification for determining equivalency and design basis requirements.
The Licensing Topical Report has been reviewed by the NRC and an SER issued (see Reference 4).
The SLC System design modification at WNP-2 will result in increased injection rate by simultaneous operation of both SLC pumps and increase of the sodium pentaborate decahydrate concentration.
The higher concen-tration levels proposed by the changes to Figure 3. 1.5-2 are necessary to meet the equivalency requirements at the minimum flow rate presently allowed by the Technical Specifications.
Increasing the sodium pentaborate decahydrate concentration and provision for two-pump operation are planned for implementation during the Spring 1987 refueling outage.
The Supply System has reviewed this request per 10CFR50.59 and 50.92 and has determined that no unreviewed safety questions or significant hazards will result relative to the proposed change because it does not:
1)
Involve a significant increase in the probability or consequences of an accident previously evaluated because the SLC sodium pentaborate solution requirement accepted by the NRC for flow and concentration equivalency exceeds the values previously presented in the Technical Specification and the change does not affect the possibility of an ATWS.
2)
Create the possibility of a new or different kind of accident from an accident previously evaluated because the increase in the SLC tank solution concentration provides sufficient boron to achieve a cold plant shutdown and the temperature limits are increased to accommo-date the maximum allowable concentrations to preclude solution preci-pi tati on.
0 ~
K.
G.
Adensam Page Three January 6,
1987 REQUEST FOR AMEND. TO TS - STANDBY LIQUID CONTROL SYSTEM 3)
Involve a significant reduction in a margin of safety because a higher minimum SLC tank solution concentration actually increases the boron available to achieve a cold shutdown over the entire range of permissible tank volumes.
This change has be'en reviewed and approved by the WNP-2 Plant Operations Committee and the Supply System Corporate Nuclear Safety Review Board.
In accordance with 10CFR170.21, an application fee of One hundred fifty dollars
($150.00) accompanies this request.
In accordance with 10CFR 50.91, the State of Washington has been provided a copy of this letter.
If you have any questions, please contact Mr.
P.
L. Powell,
- Manager, WNP-2 Licensing.
Very truly your, G.
C.
S
- ensen, Manager Regula ory Programs S IS/DLW/tmh Attachments cc:
JO Bradfute -
NRC C
Eschels -
NRC RV E
Revell BPA NS Reynolds - BLCP8R NRC Site Inspector
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STATE OF WASHINGTON
)
)
County of Benton
)
Subject:
7 8 i. 6-z
~~~0K I, G.
C. Sorensen, being duly sworn, subscribe to and say that I am the
- Manager, Regulatory Programs for the WASHINGTON PUBLIC POWER SUPPLY
- SYSTEM, the applicant herein; that I have full authority to execute this oath; that I have reviewed the foregoing; and that to the best of my knowledge, information and belief the statements made in it are true.
~
~. Sorens
, Manager Regulatory rograms
, 1987.
On this day personally appeared before me G.
C. Sorensen to me known to be the individual who executed the foregoing instrument and acknowledge that he signed the same as his free act and deed for the uses and purposes therein mentioned.
GIVEII under my hand and seal this ~d~ day of otary Pub ic i a
d or the State of Washington Residing at B~f
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