ML17298B141

Confirms 840625 Telcon Re Outcome of 840531 Appeal Meeting Re Alternate Shutdown Capability.Appeal Granted,Based on Listed Design Features for Plant & Commitment to Perform Confirmatory PRA Analysis

ML17298B141
Person / Time
Site:	Palo Verde
Issue date:	07/30/1984
From:	Novak T Office of Nuclear Reactor Regulation
To:	Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
References
NUDOCS 8408130160
Download: ML17298B141 (4)

Text

Docket Nos.:

50-528/50-529 and 50-530 Mr. E.

E.

Van Brunt, Jr.

Vice President - Nuclear Projects Arizona Public Service Company Post Office Box 21666 Phoenix, Arizona 85036

Subject:

Results of Appeal Meeting Concerning the Palo Verde Alternate Shutdown Capability The purpose of this letter is to confirm the telephone discussions we had with you on June 25, 1984 regarding the outcome of the subject appeal meeting held on May 31, 1984.

The issue involved whether a source range neutron flux monitor would be required for the Palo Verde remote shutdown panel.

As we stated, your appeal has been granted based on the following design features for the Palo Verde plant and your commitment to perform a confirmatory probabilistic risk assessment (PRA) analysis for this issue; (1) the extra worth of the control rods in comparison to other typical PWR

plants, (2) the larger coolant inventory in the primary system, (3) the ability to measure boron concentration with the boron meter in the line downstream of the letdown isolation valve, and (4) the remote shutdown panel instrumentation includes a log power meter and direct indication of reactor collant system temperature and pressure.

The purpose of the PRA is to provide further confidence that a source range neutron flux monitor is not necessary to perform and control the required plant functions outside the control room for the Palo Verde plant.

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Please advise us as to when you will provide the requested PRA analysis.

If you have any questions regarding this letter, you should contact Manny Licitra, the Licensing Project Manager.

Sincerely, cc:

See next page Thomas M. Novak, Assistant Director for Licensing Division of Licensing DISTRIBUTION CDocket F'ile+

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