ML20247K570

NPDES Noncompliance Notification:During Apr 1989,limit for Flow from Settling Basin Exceeded.Water from Circulating Water Sys Drained Into Recreation Lake from 890409-10.On 890414,high Flow for Daily Settling Basin Noted

ML20247K570
Person / Time
Site:	Trojan File:Portland General Electric icon.png
Issue date:	05/25/1989
From:	Cockfield D PORTLAND GENERAL ELECTRIC CO.
To:	Martin J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
Shared Package
ML20244C409	List: ML20244C406 ML20247K570
References
NUDOCS 8906010329
Download: ML20247K570 (15)

Text

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. _. __.. Portland General ElectricCOipziy David W. Cockfield Vice President, Nuclear May 25, 1989 a

Trojan Nuclear Plant Docket 50-344 License NPF-1 Mr. John B. Martin Regional Administrator, Region V L'.S. Nuclear Regulatory Commission Creekside Oaks Office Park 1450 Maria Lane, Suite 210 Walnut Creek CA 94596

Dear Mr. Martin:

Violation of National Pollutant Discharge Elimination System (NPDES) Permit Pursuan', to Section 3.2 of Appendix B to Facility Operating License No. NP'/-1 for the Trojan Nuclear Plant, the attached report is forwarded describing a violation of the NPDES Permit during April 1989. The vio-lation involved exceeding the limit for flow from the settling basin.

Sincerely, Attachment c: .S. Nuclear Regulatory Commission Attn: Document Control Desk Washington DC 20555 l Mr. William T. Dixon State of Oregon Department of Energy Mr. R. C. Barr NRC Resident Inspector l Trojan Nuclear Plant l

l 8906010329 890525 l PDR S

ADDCK 05000344 puu 66N,

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121 S W Salmon Street Pomana Oregon 97204 I i

1 7 Attachmtnt

' ' 14 pages E '

May 25,1989

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== Portland GeneralEledricCompany F C .

May 8, 1989

- ES-209-89L Trojan GOV REL 9C Oregon Department of Environmental Quality Northwest Region .

Executive Building 811 SM Sixth Ave Portland OR 97204 Gentlemen:

Enclosed is the NPDES report for t Trojan Nuclear Plant for April 1989. Also enclosed are data required to be submitted in addition to that on standard NPDES forms. The period in which cooldown limits applied is high lighted in yellow.

The plant was shut down on April 6 for the annual refueling outage which is scheduled for completion in mid-June.

The settling basin flow limit of 80,000 gallons per day was exceeded on April 14 with a recorded flow of 88,100 gallons. The high flow was due to the inadvertent actuation of an auxiliary cooler on the condenser air ejector system. This cooler discharges service water (river water) to the settling basin when in use. The high flow for April 14 was identified when the daily settling basin flow was determined at 0015 on April 15. The

[ source of the excessive flow was quickly identified and isolated.

Water from the circulating water system was drained to the recreation lake from 0515 on April 9 to 1711 ea April 10.

Draining of the circulating water system was performed to allow for inspection and repair of the system during the refueling outage. All required samples were taken and were within specification. Your office was notified, as required, by telephone prior to this event.

The main outfall pH monitor remained out of service during the entire month. Grab samples of the main outfall were taken and f analyzed every eight hours to verify compliance with NPDES pH j limits. This monitor has been out of service since December 31, 1988 because of a failed sample pump. Use of a replacement pump is pending approval of a temporary modification to allow installation of the pump which is of a different capacity than the

' original failed pump.

'21 iV. Sa wn Bem Pm m Deyn a 73

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Oregon. Dept Environmental Quality May 8, 1989 Page 2 The recorder for the flow meter for the settling basin was out of service for the first week of April. During this period the flow was estimated.

The sewage treatment plant has operated well within limits during the month. Approximately 617,000 gallons of sewage was treated at the on-site treatment plant, and 430,900 gallons was transported to the St. Helens, Oregon sewage treatment facility.

If you have questions, please contact.Stan Katkansky at 464-8524.

Sincerely, W JW/

R. J. Hess, Manager Environmental Sciences RJH/SCK: sic Enclosure c: William Dixon, DOE Paul Yundt Dennis Norton Gary Zimmerman Bill Peregoy zes 1014

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