ML19341B800

Requests 14 Day Extension of Implementation Date Re Order Requiring Installation of Control Rod Driveline Air Header Dump to Coincide w/810426 Shutdown for Refueling

ML19341B800
Person / Time
Site:	Cooper
Issue date:	02/23/1981
From:	Pilant J NEBRASKA PUBLIC POWER DISTRICT
To:	Ippolito T Office of Nuclear Reactor Regulation
References
LQA8100041, NUDOCS 8102270618
Download: ML19341B800 (2)

Text

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9-r GENERAL OFFICE

8. O. So X 499. CoLUVBUS. NES A ASKA 68601 Nebraska Public Power Distr.ic t rete ~o~ E = se.....

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LQA8100041 Feb ruary 23, 1981 Director, Nuclear Reactor Regulation Attention: Mr. Thomas A. Ippolito, Chief

-Operating Reactors Branch No. 2 i Division of Licensing l U.S. Nuclear Regulatory Commission Washington, DC 20555

Subject:

NRC Order on CRD Air Header. Dump Nebraska Public Power District Cooper Nuclear Station NRC Docket No. 50-298, DPR-46

Dear Mr. Ippolito:

On January 9,1981, the NRC ' issued an Order requiring that Cooper Nuclear Station install a system which would dump the air in the CRD scram valve air header once air pressure had decreased to a particular setpoint.

The Order was issued requiring installation by April 9,1981 or the plant would be required to shut down within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> (April 12, 1981). since Cooper Nuclear Station is scheduled to be shut down for refueling on April 26, 1981, Nebraska Public Power District respectively requests an extension of the implementation date (14 days) to coincide with the scheduled shut down.

We do not believe that an. extension of the requested short duration would pose an undue risk to the health and safety of the public inasmuch as the staff, in the Order, indicated that such an event (1) is of low probability, and (2) additional administrative controls had previously been incorporated into the station procedures requiring operator action

- h1 the event of'lew air pressure. Additionally, we would like to Ladicate that the District recognized the importance of the. service and instrument air systems shortly after the station was-placed in co=mercial operation in July 1974. Therefore,.to provide additional assurance of a continucus air supply a third air compressor was added to this system which.provided -a second standby unit resulting in a significant increase f in system reliability. Since the addition of the third compressor (in excess of five years) Cooper Station has not experience either a loss,

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or icw air pressure, in either the service -or instrument air systems.

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'810.2270blY f

o Mr. Thomas A. Ippolito Feb ruary 23, 1981 Page 2 Sheuld you have any cuc .icas or cc=ents relative to this request, please contact my office.  ? cur prompt attentica to this request would be greatly appreciated by the District.

Sincerely, MA Jay M. Pilant Director of Licensing and Quality Assurance

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