ML19247A347
| ML19247A347 | |
| Person / Time | |
|---|---|
| Site: | Haddam Neck File:Connecticut Yankee Atomic Power Co icon.png |
| Issue date: | 05/24/1979 |
| From: | Counsil W CONNECTICUT YANKEE ATOMIC POWER CO. |
| To: | Brunner E NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| Shared Package | |
| ML19247A346 | List: |
| References | |
| CYH 79-156, CYH-79-156, NUDOCS 7907310008 | |
| Download: ML19247A347 (2) | |
Text
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P.O. BOX 270 H ARTFORD. CON N ECTICUT 06101 L.
T E L t PMOst t May 24, 1979 CYH 79-156 DOCKET No. 50-213 U. S. Nuclear Regulatory Commission Region 1 Office of Inspection d Enforcement 631 Park Avenue King of Prussia, Pennsylvania 19406 Attn:
Mr. E. J. Brunner, Chief Reactor Operations and Nuclear Support Branch
Reference:
Letter, E. J. Brunner to W. G. Counsil, dated Fby 9, 1979 Inspection 50-213/79-08
Dear Mr. Brunner:
The following explanation concerning the item of non-compliance described in the above reference is submitted to your office pursuant to the provisions of Section 2.201 of the Nuclear Regulatory Commissions " Rules of Practice", Part 2, Title 10, Code of Federal Regulations.
Deficiency Based on the results of an NRC inspection conducted on March 20-23, 1979, it appears that one of your activities was not conducted in full compliance with conditions of your NRC Facility License No.
DPR-61 as indicated below.
This iten is a deficiency.
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Technical Specification 6.8.1 states, in part, " Written procedures and administrative policies shall be established, imolemented and maintained..." Procedure QA 1.2-6.4, Temporary Procedure Change, Step 5.1, stas m, "Uhen a deviation from a procedure is required a temporary procedure change shall be utilized."
Contrary to the above, during the performance of Surveillance Procedure, SUR 5.2-19, Refueling Water Storage Tank Level Calibration, on January 11, 1979, a deviation from the procedure was made in that the low level alarm setpoint was changed from equal to or greater than 230,000 gallons to 227,000 gallons with no procedure change being utilized.
Response
The Refueling Water Storage Tank when operable contains between 230,000 and 250,000 gallons of borated water.
The level is continuously monitored and the level indication pneumatically transmitted to the Primary Auxiliary Building Operating Control Panel and to the Control Room Panel.
Both high and low le'rel alarm capability is provided by pneumatic / electric mercoid switches.
Because of the type of switch used the reset range covered approximately 21,000 gallons.
In order to achieve a low level alarm reset at a value less than the tank overflow level it was necessary to set the alarm point at 227,000 gallons.
With the calibration procedure calling for a setpoint equal to or greater than 230,000 gallons, a Temporary Procedure Change or a procedure revision should have been initiated to allow the lower setpoint.
This item has been discussed with the cognizant department foreman and will be implemented accordingly when applicable.
A new alarm mercoid was installed on May 22, 1979 which has a much smaller reset range and was set to alarm at 230,000 gallons.
Corrective steps have been taken and the activity is now in full compliance with the NRC's requirements.
Very truly yours, CONNECTICUT YANKEE ATOMIC POWER COMPANY 7
i H&L W. G. Counsil, Vice-President Lj 9 2, 167
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