ML20086F830

Environ RO 77-1:on 770107,total Suspended Solids for Sewage Plant Effluent Exceeded ETS Limit.Caused by High Flow Carrying Solids Over from Aeration Tank Into Chlorine Contact Tank & Info Effluent

ML20086F830
Person / Time
Site:	Peach Bottom
Issue date:	01/17/1977
From:	Cooney M PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	Stello V Office of Nuclear Reactor Regulation
References
RO-77-1, NUDOCS 8401090523
Download: ML20086F830 (2)

Text

1 PHILADELPHIA ELECTRIC COMPANY 2301 MARKET STREET s ~'/\

PHILADELPHIA. PA.19101 /

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1. 3 JAN21'9777$

- u. sac:ma:Kc45 January 17, 197 ( gyg Mr. Victor Stello, Jr. ,/k, p Director Division of Operating Reactors Office of Nuclear Reactor Regulations U.S. Nuclear Regulatory Commission IEg gy Washington, DC 20555

Subject:

ENVIRONMENTAL DEVIATION The following deviation was reported to Mr. Walt Baunack, Office of Inspection and Enforcement, Region 1, United States Nuclear Regulatory Commission on January 7, 1977.

Reference:

License Number DPR-44/56 Appendix B Environmental Technical Specification Section 2.2.2 Report No.: 50-277/278-77-1 Report Date: January 17, 1977 Deviation Date: January 7, 1977 Facility: Peach Bottom Atomic Power Station Units 2 and 3 R.D. 1, Delta, PA 17314 Identification of Deviation:

The total suspended solids for the Unit 2 and 3 sewage plant effluent exceeded the Environmental Technical Specification 2.2.2.

Conditions Prior to Deviation:

The sewage plant was in the automatic mode.

Description of Deviation:

The daily turbidity measurement of the sewage plant l effluent was high and a gravimetric analysis for total suspended 1 /

l COPY SENT REGl0N # 637 0401090523 770117 PDR ADOCK 0S000277 8p' -

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Mr. Victor Stello, Jr. .ago 2 January 17, 1977 solids was run. The net total suspended solids for the sewage plant was 81 ppm greater than the river sample. Within two hours the sewage plant effluent was back within Technical Specification limits.

Desionation of Accarent Cause:

The sample was taken during a period of high flow. The greater than normal water inflow came from increased usage caused by the Unit 3 refueling outage. This high flow carried solids over from the aeration tank into the chlorine contact tank and from there carried over into the effluent. The followup samples of two hours later were within Technical Specification limits.

Analysis of Deviation:

This condition existed for a short period. Because the sewage plant flow is diluted by a factor of 10,000 with circulating water flow, the suspended solids of the circulating water leaving the discharge canal was not affected; therefore, the env'ronmental impact was minimal.

Correceive Action:

The chlorine contact tank was cleaned and the settled solids were removed.

Failure Data:

50-277/278-37, 50-277/278-76-34, 50-277/278-76-26, 50-277/278-7, and 50-277/278-6.

Very truly yours, M. J. Coon S perintencent Generation Division - Nuclear cc: Mr. J. P. O'Reilly l

Director, Region 1 Office of Inspection and Enforcement U.S. Muclear Regulatory Commission ,

631 Park Avenue King of Prussia, PA 19406 l

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Office of Nuclear Reactor Regulations -4 $ i .,f'.g. t,,g'4 f, " -~- 1.

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Dear Mr. Stello:

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. g'W SUBJII,T: ENVIRONMEffl'AL DEVIATION .h.h Y The following deviation was reported to Mr. Walt Baunack, Office of Inspection and Enforcement, Region 1, United States Nuclear Regulatory Commission on December 17, 1976.

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Reference:

. License Nunber DPR-44/56 Environgertal Technical Specifications: 2.2 4 & 3.2 4 Report No.:

Report Date:

50-277/278-76-45 December 27, 1976 3 061/ A ~'

Deviation Date: December 17, 1976 .

Facility: Peach Bottom Atomic Power Station Units 2 & 3 B.D. 1, Delta, Pa. 17314 .g . l(

3 . r; Identifiention of Deviation: Isn 3 Q'

Excessive chemical usage. EE Conditions Prior to Deviation:

Units 2 and 3 both in commercial operation in 1976.

Description of Deviation:

The following chemical usage for the first 6 months in 1976 exceeded 2 times the estimated yearly usage which is an Environmental Deviation.

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Mr. ' Victor Stello, Jr. O @

k December 27,1W6 50-277/W8-76-45 Page 2 t

j Chemical Tech Spec Limit Semi-Annual Usace I2 x est, usage) a;;D:qy l- j priorto7/27/76 after 7/27/76 [N, + .

Amendment Amendment i G T.. T.'

! Alum 56,500 lbs. 40,000 lbs.

A . u T;-

160,000 lbs. WE cs a."

e, The reduction in reclaimable Rad-vaste

, was caused by oil contamination resulting from equipment failures. l i

Analysis of Deviation:

i No safety implications.

" No adverse effects to the Conowingo Pond have been observed due to this excessive usage. -

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Corrective Action:

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[ The Rad-waste equipment failures have been corrected and the amount of main unit makeup has been reduced. Modifications have been p i.

made, and i'urther system improvements are planned to the auxiliary "'

p boiler condensate return system to reduce ' auxiliary boiler makeup and improve ease'of system maintenance.

=

I On July 27,1W6, the NRC issued Amendments to the Peach Bottom Units 2 and 3 Operating Licenses (Amendment 20 to DPR-44 and ~

Amendment 20 to DPR-56) changing Environmental Technical Specification

[

c 2.2 4 by increasing the amount of chemical usage permitted. Fhture Alum usage similar to that experienced during the first half of 1976 E will be Amendment.

27,1W6 well within the Technical Specification limits of the July " -

Philure Data:

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P Environmental Deviation Reports 50-277/278-76.-8, 50-277/278-75-4.

I 5 Very truly yours,

?

- M. J. Cooney g fx w. g Superintendent - -

Generation Division-Nuclear j f cc: J. P. O'Reilly NIlc, Reg. Office '

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