ML20024A521
| ML20024A521 | |
| Person / Time | |
|---|---|
| Site: | Rancho Seco |
| Issue date: | 06/06/1983 |
| From: | Reinaldo Rodriguez SACRAMENTO MUNICIPAL UTILITY DISTRICT |
| To: | Eisenhut D Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML20024A522 | List: |
| References | |
| RJR-83-475, TAC-52607, NUDOCS 8306170402 | |
| Download: ML20024A521 (2) | |
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a SACRAMENTO MUNICIPAL UTILITY DISTRICT O 6201 S street, P.O. Box 15830, Sacramento, CA 95813; (916) 452 3211 AN ELECTRIC SYSTEM SERVING THE HEART OF CAllFORNIA RJR 83-475 June 6, 1983 DIRECTOR OF NUCLEAR REACTOR REGULATION ATTN DARRELL G EISENHUT DIRECTOR DIVISION OF LICENSING US NUCLEAR REGULATORY COMMISSION WASHINGTON DC 20555 DOCKET NO. 50-312 PROPOSED AMENDMENT NO. 94 In accordance with 10 CFR 50.59, the Sacramento Municipal Utility District hereby proposes to amend its Operating License DFR-54 for Rancho Seco Nuclear Generating Station, Unit No.1; enclosed are forth (40) copies of this proposal entitled Proposed Amendment Number 94.
The purpose of this proposal is to revise Item 3 of Technical Specifications, Table 4.1-1.
Currently, this item requires Nuclear Instrumentation (N.I.)
calibration whenever the heat balance measured power level differs from the N.I. measured power level by more than two(2) percentage points of full power; this item also requires N.I. calibration daily during non-steady-state operation. This revision would only require N.I. calibration whenever the heat balance measured power level exceeds the N.I. measured power level by more than two (2) percentage points of full power. That is, whenever the N.I. measured power level is greater than the heat balance measured power level, calibration of the N.I. would not be required.
The basis for this proposal is as follows: Transient data has shown that transients from high to low power always cause the N.I. to read high (a conservative error).
Thus, when the N.I. is then calibrated at low power (as currently required), the N.I. will indicate a non-conservative error when the reactor is brought back to high power. Of course, this nonconservative error is corrected with another calibration. However, this revision would eliminate the need for both calibrations.
Since this proposal involves a single issue, it is per 10 CFR 170.22, a Class III Amendment. A check for the required fee of $4,000 is enclosed.
IW I
l 8'306170402 930606 DR ADOCK 05000 gd 60
Darrell'G..Eisenhut' -June 6, 1983
. If you have any questions 'concerning this proposal, please contact Mr. Ron Colombo at the Rancho Seco Nuclear Generation Station.
R. J. Rod guez Executive Directo Nuclear-Enclosures Subscribpd and sworn to before me this frC day of June,1983.
Notary Public
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OFFICIAL SEAL l
PATRf CIA K. G,ommEISLER em nau asfsesia My Commissmo bpres Nove.ber 22,1933 l
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