IR 05000323/1986004
| ML16341D612 | |
| Person / Time | |
|---|---|
| Site: | Diablo Canyon  |
| Issue date: | 01/23/1986 |
| From: | Dodds R, Mendonca M NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| To: | |
| Shared Package | |
| ML16341D611 | List: |
| References | |
| 50-323-86-04-EC, 50-323-86-4-EC, NUDOCS 8602190596 | |
| Download: ML16341D612 (6) | |
Text
U. S.
NUCLEAR REGULATORY COMMISSION
REGION V
Report No.
Socket No.
50-323/86-04 50-323 Iicense No. DPR-82 Licensee:
Pacific Gas and Electric Company 77 Beale Street,,Room 1451 San Francisco, California 94106 Facility Name:
Diablo Canyon Unit 2 Location:
Diablo Canyon Site, San tuis Obispo County, California Conference conducted:
January 10, 1986 Prepared by:
M. M. Mendonca Senior Resident Inspector Approved by:
R. T. Dodds Chief, Reactor Projects Section
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Date Signed
/az fZ Dat S gned
~Sammar Enforcement Conference on January 10, 1986 (Report No. 86-04)
The following matters were discussed:
1.
NRC concerns regarding inoperability of'he train A main steam line isolation valve actuation logic when required for Unit 2 operations in modes 1 through 3!,.
2.
Licensee corrective actions.
3.
NRC enforcement policy.'his enforcement conference involved a total of 18 hours2.083333e-4 days <br />0.005 hours <br />2.97619e-5 weeks <br />6.849e-6 months <br /> by nine NRC representatives.
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ENFORCEMENT CONFERENCE Conference Attendees Pacific Gas and Electric Com an (PGGE)
I G. A. Maneatis, Executive Vice President J.
D. Shiffer, Vice President, Nuclear Power Generation J.
C. Carroll, Manager,,
Nuclear Operation Support W. A. Raymond, Assistant to the'Vice President R.
C. Thornberry, Plant Manag'er '
W. X'. Rapp, Chairman, Onsite Review Gro'p R. Patterson, Assistant, Plant Manager, Plant Superi'ntendent J.
M. Gisclon, Assistant Plant Manager, for Techni'cal Services J.
A. Sexton, Operatio'ns,Manager'.
B. Miklish, Maintenance Manager W.
C. Crockett, Instrument and Control Manager L. F.
Womack, Engineering Manager S. R. Fridley, Senior Operations Super'visor NRC Re ion V J.
B.
A. D.
R. T.
M. M.
T. J.
M. L.
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M.
J. F.
G ~ N.
Martin, Regional Administrator Johnson, Enforcement Officer Dodds, Chief, Reactor Projects Section
Mendonca, Senior Resident Inspector Polich, Resident Inspector Padovan, Resident Inspector Ross, Resident Inspector Melfi, Reactor Inspector Cook, Public Affairs Officer Conference Summa The enforcement conference convened at 10:00 a.m. in Room 122 of the PGSZ Training Building at the Diablo Canyon site.
Mr. Martin made opening remarks and discussed the purpose of the conference.
Mr. Mendonca discussed the findings of the special inspection, involving the inoperability, due 'to miswiring, of one train of the Main Steamline Isolation Valve (MSIV) Engineered Safety Features Actuation System logic.
Specific concerns were discussed, as identified in NRC Inspection Report 50-323/85-45.
An apparent violation of NRC requirements was identified.
The meeting discussion then centered on the NRC concerns related to the event and apparent causal factors as perceived based upon the NRC's inspection activities.
The concerns addressed included the following:
Several groups within the licensee's organization missed opportunities to identify and correct the inoperability of the MSIV Train A, and similar miswiring on a feedwater isolation valv f b
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The licensee's problem resolution efforts appeared to be using limited and'incomplete information.
There have been indicators of-a lack of attention to detail in licensee performance since i'ssuance of the Unit 2 license.
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, I rt NRC representatives made "it clear that ensuring quality performance is the prime responsibility of PGEiE's'top management.,
Further, the need for personal involvement by PGSE's top management to assure that problems are aired and resolved in'
thorough manner was discussed.
Messrs.
Maneatis and Shiffer discussed the licensee's perception of the identified problem.
They agreed that more attention to detail was needed and would be given.
Mr. Fridley presented the scenario of events related to the inoperability of the MSIV Train A actuation logic.
Mr. Shiffer discussed corrective actions taken and being taken by PGSZ to address the identified weaknesses.
This corrective action includes
'independent assessment of the licensee's problem resolution efforts by the Onsite Safety Review Group.
In response to a question from Mr. Johnson, licensee representatives stated that they had no questions regarding the NRC enforcement policy (as provided in 10 CFR 2, Appendix C).
Mr. Martin presented concluding remarks, and the conference adjourned at 12:00 noo I I
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