ML17299A624
| ML17299A624 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 09/20/1985 |
| From: | Martin J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| To: | Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR |
| Shared Package | |
| ML17299A623 | List: |
| References | |
| CAL, NUDOCS 8509270070 | |
| Download: ML17299A624 (4) | |
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UNITED STATES NUCLEAR REGULATORY COMMISSION REGION V 1450 MARIALANE,SUITE 210 WALNUTCREEK, CALIFORNIA94596 gyp 20 ~986 Docket No. 50-528 License No. NPF-41 CONFIRMATORY ACTION LETTER Arizona Nuclear Power Project Post Office Box 52034 Phoenix, Arizona 85072-2034 Attention:
Mr. E. E. Van Brunt, Jr.
Executive Vice President
Subject:
Return of Palo Verde 1 to Power Operations from Current Outage Gentlemen:
In my letter to you of September 17, 1985, I confirmed Arizona Nuclear Power Project's (ANPP) agreement that prior to restart of the Unit from its current
- shutdown, you would ensure that the issue of appropriate design criteria for the auxiliary spray system was resolved to the satisfaction of the NRC staff.
By letter dated September 18,
- 1985, you discussed the unscheduled shutdown of September 12, 1985 and briefly addressed NRC concerns relating to the auxiliary spray system and interfacing equipment.
In response to these
- concerns, you proposed certain short term compensatory measures for continued operation of the facility.
In a meeting with the NRC staff on September 20,
- 1985, you provided a more in-depth description of the September 12, 1985 event, including the sequence of
- events, design characteristics of the auxiliary spray system, and a further discussion of the short term compensatory measures for continued operation.
At the conclusion of the meeting, Mr. J. Haynes, Vice President for Nuclear Production, ANPP, committed to the following short term compensatory measures:
(1) ".Monitor the reference leg of the volume control tank level indicator on a daily basis.
If the data obtained justify a less frequent monitoring
- interval, ANPP may propose a different interval to the NRC staff.
(2)
Revise the appropriate procedures to require alignment of the refueling water tank to charging pump suction promptly on loss of offsite power.
(3)
Institute procedural cautions on restart of the charging pumps.
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(4)
Examine the post-trip review process in light of the September 12, 1985 event to assure that off-normal events are adequately evaluated, particularly with respect to their potential safety significance.
(5)
Examine the process for vendor reviews of the remaining power ascension tests to assure that, for equipment particularly sensitive to the test being conducted, appropriate vendor input has been provided in the test development.
(6)
Review the shift complement for the remaining power ascension tests to determine if additional staffing may be appropriate.
On the basis of the above commitments, we are satisfied that adequate short-term compensatory measures are in place for restart of the Unit from its current shutdown.
Long term measures to assure the continued reliability of the auxiliary spray system will be the subject of future correspondence.
If our understanding concerning the above measures is not correct, you should promptly notify this office in writing.
J.
B. Martin Regional Administrator Distribution:
Standard J. Axelrad, IE J. Lieberman, OELD
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