ML16340C374

Responds to to President Reagan Re Delays in Licensing of Plants.Nrc Suspended Low Power OL on 811119 & Requested That Addl Info Be Submitted to Assure That Piping & Component Restraints Were Properly Designed

ML16340C374
Person / Time
Site:	Diablo Canyon
Issue date:	02/16/1982
From:	Berkow H Office of Nuclear Reactor Regulation
To:	Draper D AFFILIATION NOT ASSIGNED
References
NUDOCS 8203100584
Download: ML16340C374 (8)

Text

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February 16, 1982

,Qi" Docket Nos. 50-275 and 50-323 h1r. Dennis D. Draper Rt. 1, Box 53A Arcata, California 95521

Dear h1r. Draper:

This is in response to your recent message to President Reagan regarding the delay in licensing of the Diablo Canyon Nuclear Power Plant.

Extensive public hearings have been held before an Atomic Safety and Licensing Board (ASLB) on various matters concerning the status of Diablo Canyon.

The Hosgri Fault, which is located 24 miles offshore from the Diablo Canyon plants, was discovered in 1971 and has been the subject of intensive investigation by the Pacific Gas

& Electric Company (PGSE), the U.S. Geological Survey (USGS) and the Nuclear Regulatory Commission.

As a principal geological advisor for the Commission, the USGS in 1975 suggested that a magnitude of 7.5 be assigned as a potential seismic value for the Hosgri Fault.

On September 26, 1979, the ASLB assigned to conduct the licensing hearings issued its partial initial decision which found that a

7.5 magnitude earthquake is reasonable and meets regulatory requirements.

On July 17, 1981, the Board issued its findings, concluding that operation of the Diablo facility at power levels not to exceed 5X rated power would not pose an undue risk to the health and safety of the general public.

The NRC issued a low power license on September 22, 1981.

On September 28, 1981, PGRE notified the NRC staff that incorrect vertical response spectra were used in the design of seismic restraints for certain piping and components.

The Commission suspended the low power operating license on November 19, 1981, and requested that additional information be submitted to assure that the piping and components restraints have been properly designed prior to a decision on re-instating the low power license.

OFFICE/

SURNAI4EP

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lie appreciate your interest in the Oiablo Canyon project and understand your frustration at the delays in its licensing.

Please be assured that the NRC is taking every reasonable action to expedite the licensing

process, consistent with our commitments to ensure the public health and safety.

Sincerely,

'Original Signed by, Herbert N. Berkow Herbert N. Berkow, Chief Management Analysis Branch Planning and Program Analysis Staff Office of Nuclear Reactor Regulation OFFICE/

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IDENTICAL LETTERS SENT TO:

Hr. Dennis'.

Draper Rt. 1, Box 53A Arcata, California 95521 Ms. Susan Dogherra 2257.Juan Pablo,Lane Santa Cruz, California 95062 Mr. Paul A. Randolph 156 Blueberry Hill Los Gatos, California.

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