ML20086F828
| ML20086F828 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 01/27/1977 |
| From: | Cooney M PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | Stello V Office of Nuclear Reactor Regulation |
| References | |
| RO-77-3, NUDOCS 8401090519 | |
| Download: ML20086F828 (2) | |
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PHILADELPHIA 21.ECTRIC COMPANY I
i 2301 MARKET STREE' PHILADELPHIA. PA.191Ci 1215)9414000 Jamery 27, 1c,7
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Mr. '13cter Stello, Jr.
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Division of Operating Reactors hk, ION'M Office :.f thciear Reactor Regulations W
U.S. !belear Regulatory Cc= mission Washington, D.C. 20555 Doar Mr. Stallo:
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DNIRCNME'"IA; DEVIN"I'W.
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- following danatiaa van rge: wt : c Mr. Wi.' Sunsek, C:'fa + cf Insp-ction an1 Enforcenent, Region 1, N.ta.i 3:stos Nucle r ?ogulatcr7 C tr* ecion er. January 17, 1977.
FeDracce:
License uta'aer C'?. 4 4 Y
Envirt.ru-u tal Tec'.n.n L 3pecifi<..*'cas 2.2 3 r
Raport So.:
50-277/2 5 77-3 Eeport Date:
Jama:7 27, 1977 Deviation Date:
Januar/ 17, 1977 Fsellity:
Peain Eattom Atode Pouer Station (Units 2 & 3) relta, FA 17314 Ident'mfication of De'rin+, ion:
The pH for the sewage ph_t :ffluent uce'ded the Environnertal Technical Scecificttien limit.
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5evage. ; lat cperstd rg n -- '^.,.
'Le.;;1.nion of Davide.,n1 The daily grab sanple frem the sewage plant-affluent neasured a pH of 5 5.
The fochnical Specification limit is that pH shall be within the range of 6.0 to 9 0.
0401090519 770127 PDR ADOCK 05000277 S
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Mr. Victor Stello, Jr.
50-277/278-77-3 January 27, 1977 Page 2 Designation of Annarent Cause of Deviation:
An acidic solution may have been flushed into the sewage system and reduced the pH of the whole system; however, since no such source could be located, it is thought that the low pH of the effluent was caused by influent with pH slightly lower than normal but a pH above 6.0 coupled with the natural pH drop across the style of sewage treatment plant.
Analysis of Deviadon:
The duration of the deviation was less than one hour. Because the effluent from the sevage plant was being diluted by a factor of 50,000 at the time, the pH change in the. circulating water leaving the discharge canal was not detectable. The environmental impact was insignificant.
Corrective Action:
The sewage plant was neutralized and returned to normal operation.
A joint effort between Peach Bottom and Betz Environmental Engineers, Inc.
1: underway to optimize the operation of the" sewage plant in order to prevent Ibrther deviation of this nature.
Failure Data:
50-277/278-76-36, 50-277/278-76-42 & 50-277/278-76-43 Very truly yours, M
. Cooney perintendent Generation Division - Nuclear cc:
J. P. O'Reilly NBC, Regional Office e
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