ML16341F235
| ML16341F235 | |
| Person / Time | |
|---|---|
| Site: | Diablo Canyon  |
| Issue date: | 07/05/1989 |
| From: | Shiffer J PACIFIC GAS & ELECTRIC CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| Shared Package | |
| ML16341F236 | List: |
| References | |
| DCL-89-182, GL-85-16, NUDOCS 8907130036 | |
| Download: ML16341F235 (6) | |
Text
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II REGULATORY 'INFORMATION DISTRIBUTION SYSTEM (RIDS)
ACCESSION NBR:8907130036 DOC.DATE: 89/07/05.
NOTARIZED: YES DOCKET FACXL:50-275 Diablo Canyon, Nuclear Power Plant, Unit 1, Pacific Ga 05000275 50-323 Diablo Canyon Nuclear Power, Plant, Unit 2, Pacific Ga, 05000323 AUTH.NAME
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AUTHOR AFFILIA'TION SHIFFER,J.D.
Pacificas
&.Electric go.
RECIQ.'NAME
'ECIPIENT AFFIL'IATION'"'ocumentControl Branch (Document Control Desk)
SUBJECT:
Forwards application for amends to Licenses DPR-'80 G.DPR-,82, consisting of License Amend Request 89-08.
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Paclflc Gas and Electric Company 77 Beale Street San Francisco, CA 94t06 4151972.7000 TWX910.372 6587 James D. Shiffer Vice President Nuclear Power Generation July 5, 1989 PG&E Letter No. DCL-89-182 U.S. Nuclear Regulatory Commission ATTN:
Document Control Desk Hashington, D.C.
20555 Re:
Docket No. 50-275, OL-DPR-80 Docket No. 50-323, OL-DPR-82 Diablo Canyon Units 1
and 2
License Amendment Request 89-08 Revision of Technical Specifications 3.1.1.1, 3.1.1.2, 4.1.2.1, 4.1.2.2, 3.1.2.5, 3.1.2.6, 3.5.5, 3.9.1, 3.10.1, and Associated Bases Reduce Boron Concentration in the Boric Acid System Gentlemen:
Enclosed is an application for amendment to Facility Operating License Nos.
The enclosed License Amendment Request (LAR) proposes to revise the Technical Specifications associated with the Boric Acid System to reduce the boron concentration from 12 to 4 weight percent.
As discussed in Generic Letter 85-16, there have been i ncidents at operating plants in which boric acid crystallization in safety-related system components has been sufficient to render the systems inoperable.
The changes proposed in this LAR will reduce the potential for such incidents at Diablo Canyon and reduce routine maintenance and operations problems associated with the boric acid storage and transfer systems.
Based on the potential safety risk associated with use of high concentration boric acid, PG&E believes the priority for NRC review and approval of this LAR is high and desires timely issuance of the requested license amendment.
PG&E presently plans to implement the required plant modifications and reduce the boron concentration in the Boric Acid System during the Unit 2 third refueling outage (February 1990) and the Unit 1
fourth refueling outage (February 1991).
To include the proposed changes in the 1990 Unit 2 outage, PG&E needs to have a license amendment issued approving the requested changes prior to December 1,
1989.
To provide flexibilityfor implementation of the technical specification revisions, PG&E suggests that the NRC make the revised technical specifications effective for each unit "following the refueling outage in which the modifications are implemented."
PG&E will inform the NRC before restart of each unit r
8907%30036 85'0705 PDR ADOCK.OS000275 F
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Document Control Desk PGhE Letter No. DCL-89-182 July 5, 1989 following implementation of the plant modifications and boron concentration reduction.
Kindly acknowledge receipt of this material on the enclosed copy of this letter and return it in the enclosed addressed envelope.
Sincerely, D. Shi er cc:
J.
B. Hartin H. H. Hendonca P.
P. Narbut H.
Rood P. A. Szalinski B. H. Vogler CPUC Diablo Distribution 11 1
Enclosure 2773S/0069K/RL3/2252
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