ML20080K026
| ML20080K026 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 02/08/1984 |
| From: | Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR |
| To: | Martin J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| References | |
| NOLD-84-70, NUDOCS 8402150271 | |
| Download: ML20080K026 (2) | |
Text
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Arizona Public Service Company Po 00X 2tf46. DHOENiX. A91ZON A 8503S February 8, 1984 NOLD 84-70 Mr. John B. Martin Office of Inspection and Enforcement Region V U. S. Nuclear Regulatory Commission 1450 Maria Lane, Suite 210 Walnut Creek Plaza Walnut Creek, CA 94596
Subject:
Palo Verde Nuclear Generating Station Units 1, 2, and 3 Fire Protection System: Post Indicator Valves Docket Nos. STN-50-528/529/530 File: 84-019-026
Reference:
Incoming letter from T. W. Bishop to G. C. Andognini dated December 13, 1983. same subject.
Dear Mr. Martin:
The above referenced letter identified several concerns which warranted APS management's attention.
Following is APS's respcnse to these items:
1.
The unit 1 fire protection loop was transferred from Bechtel startup to APS preoperational testing in June 1983. The inspector saw correspondence from the insuring firm to APS stating acceptance of the underground fire protection system. The Ictter also identified the need for future prevent-tative maintenance (PM) work to keep the levels of rust and corrosion to a minimum. A review of the APS maintenance program for the valves and hydrants disclosed that system surveillances were still being developed and no preventative maintenance had been conducted on the valves and hydrants as yet.
The Preventative Maintenance Program for the Fire Protection System utilized by the Operations and Maintenance Department has been based upon the ANI/MAELP recommended Fire Equipment Inspection, Testing, and Maintenance frequency schedule as well as the various technical manual recommendations of the vendors supplying the equipment.
Preventative Maintenance activity is occurring on the Fire Protection System and the post indicator-vnivesjPIV's) are specified in a surveillance test for an annual cycling frequency which conforms to the above recommended testing frequency.
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Mr. John B. Martin
,4 Fire Protection System: Post Indicator Valves NOLD 84-70 Page 2 2.
A potential problem with the fire loops has been identified by Bechtel Startup in that the amount of valve seat leakage of the.various (PIV's) has been questioned.
Although the initial Startup recommendations involved Prevent-ative Maintenance recommendations, a review of previous activities and documentation has raised a concern relative to the initial flushing adequacy of the system, the water chemistry of the water and the corrosion rates within the system. A concerted effort by Startup, Operations Engineering, Maintenance and Operations is underway to develop answers to these questions. Since the Unit III piping loop is just now being transferred, a complete, high volume flush is being developed which will be followed by tests to identify any further PIV leakage problems. A completion date of April 30, 1984 has been established for the development of procedures by APS Startup to address the leakage problem.
3.
A question relative to the transition of startup phase PM to opera *lonal phase PM has been raised.
The Preventive Maintenance Program for PVNGS is addressing this issue by combining the Startup and Operations PM programs together under a single administrative organization.
This group is presently reviewing the programs for potential breakdowns in PM coverage and will make these results available by March 31, 1984.
We feel that the completion of these activities will address the concerns identified in the referenced letter.
If you have any further questions, please contact Todd Bloom at (602)-943-7200 extention 6159.
Sincerely,
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E. E. Van Brunt, Jr.
APS Vice President, Nuclear ANPP Project Director EEVBJr/SRF/TJB/mb cc:
Director, Office of Nuclear Reactor Regulation Director, Office of Inspection and Enforcement NRC Resident Inspector - PVNGS NRC Project Manager - PVNGS