ML20086K280

Environ RO 74-3:on 740928,oil Noted in Conowingo Pond.Caused by Broken Oil Boom.Underwater Technics Deployed Emergency Oil Booms to Contain Oil Near Shoreline & Pumped Out Entrapped Oil.River Completely Cleaned

ML20086K280
Person / Time
Site:	Peach Bottom
Issue date:	10/08/1974
From:	Cooney M PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	Giambusso A US ATOMIC ENERGY COMMISSION (AEC)
References
RO-74-3, NUDOCS 8401260411
Download: ML20086K280 (2)

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V PHILADELPHIA ELECTRIC COMPANY 'y 0 O 2301 MARKET STREET k/, #

1 PHILADELPHIA. PA.19101 9 s21m eat aooo k

,} l % 4f'3 ,fj Pun October 8, 1974 fN('['

Mr. A. Giambusso Deputy Di rector of Reactor Projects United States Atomic Energy Commission Directorate of Licensing '

Washington, D.C. 20545

Dear Mr. Cicmbusso:

Subiect: Envi ronmental Deviation The following deviation was reported by telephone to Mr. Eldon Brunner, A.E.C. Region I Regulatory Operations Office on September 28, 1974. In accordance wi th Section 7.4.2.A of the Envi ronmental Technical Speci fications, Appendix B of DPR-44 for Unit 2 and OPR-56 for Unit 3 Peach Bottom Atomic Power Station, the following report is being submitted to the Directorate of Licensing as an Environmental Deviation.

Reference:

License Numbers DPR-44 and DPR-56 Envi ronmental Technical Speci fi ca tion Appendix B, Section 4.2 Report No.: 50-277/278-74-3 Report Date: October 8, 1974 Deviation Date: September 28, 1974

- Faci li ty: Peach Bottom Atomic ' Power Station Units 2 and 3 R. D. # 1, De l ta, Pennsylvania 17314 Identification of Deviation:

Oil was noted in Conowingo Pond at the point where #4 Storm

. Sewer discharges into the river. This point is approximately 300 yards north of the Unit 3 intake structure.

Conditions Prior to Deviation:

Unit 2 at 78% power and Unit 3 shutdown for a scheduled main- -q x tenance outage. Five circulating water pumps in service.

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Mr, A. Giambusso October 8, 1974 Page 2

$A Description of Deviation:

An oil film on the river was observed from the Unit 3 intake structure approximately 300 yards upriver, and out as far as 40 yards to 100 yards from the shoreline.

Designation of Apparent Cause of Deviation:

At approximately 2:00 a.m. on 9/28/74, an operator noted that a 1 caking hose on the discharge of the centri fuge connected to the Unit 3 turbine lube oil reservoir had spilled a large amount of oil in the aisle at elevation 116 north of the tube oil storage tanks. This oil was observed to be running down one of the floor drains and under the roll-up door in that area, across the macadam driveway and into the

1. 4 storm sewer system. The floor drains in that area empty into the

1. 4 storm sewer system also. An oil boom which had previously been placed in the area where this storm sewer discharges to the river had broken and the oil spilled along the shoreline both north and south from the point of discharge.

Analysis of Deviation:

A consultant for Philadelphia Electric Company, Underwater Technics, was contacted and responded wi th men and equipment to recover the oil. Philadelphia Electric Company Electric Production personnel were noti fied, as well as E.P. A., D.E.R., A.E.C., and all downstream users. By approximately 6:00 p.m. on 9/28/74, approximately 1000 gallons of oil had been recovered from the river and 200 gallons had been recovered from the inside of the plant. A total spill of approxi-mately 1400 to 1800 gallons was indicated by estimated changes in lube oil reservoi r Icvel. A small amount of oil was taken in by the Unit 3 circulating water pumps and resulted in a very thin oil sheen down-stream of the discharge structure. A consul tant, Ichthyological Associ a tes, indicated that this oil sheen had minimal effect on the envi ronmen t.

Corrective Action:

Underwater Technics deployed emergency oil booms to contain the oil near the shoreline and pumped out the entrapped oil into a  :

By 6:00 p.m. the river was completely clean.

tank car.

. In order to prevent a recurrence of this accident, the oil piping will be modified on the oil centrifuge. All ficxible hose con-nections for the centrifuge will be contained within the 4 f t. retain-ing wall around the lube oil storage tanks. The lines outside of this wall will be hard piped from the centrifuge to eliminate this problem. ,

Very truly yours, f/ /

Y/l// / a

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c, M.,J.

Cooney cc: J. P. O'Reilly & Asst. Geni. Supt.

Region 1, U.S.A.E.C. Generation Divi sion j