ML19260D885
| ML19260D885 | |
| Person / Time | |
|---|---|
| Site: | Rancho Seco |
| Issue date: | 02/01/1980 |
| From: | Mattimoe J SACRAMENTO MUNICIPAL UTILITY DISTRICT |
| To: | Reid R Office of Nuclear Reactor Regulation |
| References | |
| RTR-NUREG-0578 NUDOCS 8002120553 | |
| Download: ML19260D885 (2) | |
Text
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-bST1SMUD SACRAMENTO MUNICIPAL UTILITY DISTRICT C 6201 s street, Box 15830. Sacra nento, California 95813; (916) 452-3211 February 1, 1980 Director of Nuclear Reactor Regulation Attent;on:
Mr. Robert 14 Peid, Chief Operating Reactors, Branch 4 U.S. Nuclear Regulatory Commission Washington, D.C.
20555 Docket No. 50-312 Rancho Seco Nuclear Generating Station, Unit No. 1
Dear Mr. Reid:
On flovember 22, 1978, the Sacramento Municioal Utility District requested an exemption from 10 CFR 50.46 until further imorovements to the ECCS can be made.
These improvements consist of modifications which will eliminate any requirement for operator action following a small break.
On December 4,1978, the District provided additional information on the equipment to be used in the modification.
At that time the DC motors used to replace the AC motors on the high pressure injection valve operators were the items controlling schedule with an exoected expedited delivery date of September 1,1979.
In June 1979, the Limitorque Company, suppliers of the existing valve operators, informed the District that contrary to their original assurances, the DC motors, then on order, would not be compatible with the existing valve operators.
This then made it necessary to buy new motors and operators as a designed package.
At this point, the Sacramento Municipal Utility District, which is a public agency, was required by law to prepare a specification and receive public bids for the motor-operator design package. The specification was prepared and issued in July 1979.
After initially receiving no bids, a valid bid was received, and award was made in September 1979, to the Limitorque Company.
At the time of award, the limiting item was the supply of the DC motors which was scheduled for May 21, 1980. This schedule has been advanced to March 31, 1980, by spending an additional $1,100 for each unit.
The current schedule indicates that Rancho Seco could comolete this refueling outage and return to power on March 1,1980.
Therefore, the District requests continuation of the exemption with this item to be treated on the same basis as other TMI modifications subject to delay in delivery, that is, that the District would commit to installing the modification within thirty days af ter receipt, or in no event later than June 1, 1980.
1950 183
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Mr. Reid February 1, 1980 The District also wishes to reiterate that it continues to be our position that Rancho Seco, Unit No.1, ECCS is currently acceptable and wholly in conformance with 10 CFR 50.46, and the District would not have filed the reauest for exemption in the absence of a specific request from your staff.
This reouest for continuation of the exemption is in the public interest, because the absence of this exemption would result in the loss of a large block of power and reduction of electrical power reliability in the District's service area.
If you have any further questions concerning this request, please contact us.
Sincerely yours, NhL v
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John Mattimoe Assistant General Manager and Chief Engineer 1950 184