ML20107M752

NPDES Noncompliance Notification:On 840915-30,required Tide Gauge Reading Not Taken When Four Circulating Water Pumps Operating Continuously During Outage.Procedure Will Be Revised to Ensure Required Tide Gauge Reading Taken

ML20107M752
Person / Time
Site:	Oyster Creek
Issue date:	11/07/1984
From:	Fiedler P GENERAL PUBLIC UTILITIES CORP.
To:	Gaston J NEW JERSEY, STATE OF
References
-5550-84-4, 000-5550-84-04, NUDOCS 8411140251
Download: ML20107M752 (2)

Text

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4 GPU Nuclear Corporation NggI f Post Office Box 388 Route 9 South Forked River, New Jersey 08731-0388 609 971-4000 Writer's Direct Dial Number:

November 7, 1984 Mr. John Gaston, Director Division of Water Resources NJ Department of Environmental Protection P.O. Box CN-029 Trenton, New Jersey 08625

Subject:

GPUN Nuclear Corporation NJPDES Permit No. NJ 000 5550 Noncompliance Report No. 000 5550/84/04 Attached is a report indicating a noncompliance with item 9b(3) of the subject permit for the Oyster Creek Nuclear Generating Station.

Very truly yours, 34_ AL $

W VWJ ter . Fiedler Vice President and Director Oyster Creek PBF/ dam Attachment cc: Dr. Richard A. Baker, Chief NJ Bureau of Radiation Protection Permits Administration Branch Attention: Chief Planning and Management Division Division of Environmental Quality U.S. EPA United Sierra Bldg.

Region II 380 Scotch Road 26 Federal Plaza West Trenton, NJ 08625 New York, NY 10278 Regional Administrator, Region I Director. I t US NRC Office of Nuclear Reactor Regulations l 631 Park Avenue U.S. Nuclear Regulatory Commission King of Prussia, PA 19406 Washington, DC 20555 c/o Distribution Srv. Branch, DDC, ADM 8411140251 841107 q>3 PDR ADOCK 05000219 PDR S gp GPU Nuclear Corporation is a subsidiary of the General Public Utilities Corporation

.. . .N Date of

, Occurrence: September 1984 REPORT OF NONCOMPLIANCE WITH CONDITIONS OF NJPDES PERMIT NO. NJ 000 5560 REPORT NUMBER 000 5550/84/04 l

IDENTIFICATION OF OCCURRENCE:

Noncompliance with item 9b(3), page 5 of 20.

CAUSE OF NONCOMPLIANCE:

Failure to take a velocity measurement (tide gauge reading).

DESCRIPTION OF NONCOMPLYING DISCHARGE:

From the period of September 15th to the 30th, four circulating water pumps were operating continously even though tne plant was in an outage. The permit requires a velocity measurement whenever three or more pumps are operating.

Routinely, a velocity estimate is detemined by reading a tide gauge located on the station's intake structure and applying this reading to the intake velocity tables as specified in the pemit. The reading, however, was not taken during the 15 days of pump operation, consequently a noncompliance exists for naving missed the tide gauge reading.

Although the measurement was not taken a conservative estimate of intake velocity can still be determined based on the operating regime at the time of four pumps and six ports, and in addition a conservative estimate of a water height of 20 feet. The 20 feet level is conservative, as this level has been reached only once since 1976. It is highly improbable that the intake velocity limitation could have been exceeded without having an unusually high water level of 21' or greater. Consequently the actual intake velocity was not exceeded.

DURATION OF NONCOMPLIANCE:

Fifteen days l CORRECTIVE ACTION TO REDUCE THE NONCOMPLYING DISCHARGE:

l N/A CORRECTIVE ACTION TO PREVENT RECURRENCE:

As indicated, the standard fomat for detennining the intake velocity is to take j

a tide gauge reading, determine pump operational status and apply this to the predictive tables. To ensure that the required measurement is taken procedure

[- 9410.SUR 4512.07 will be revised to include the specific method for detennining

! the velocity and under what conditions. Additionally, a memorandum of agreement l has been initiated between the Operations Department and the Environmental Controls Department, in which the Operations Department will advise the Environmental Controls Department of the circulating water pump operational

! status in order to make an assessment as to when to take a velocity measurement that is representative of the nonnal operating regime of the intake structure.

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