ML20210E136
| ML20210E136 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 03/15/1986 |
| From: | Ellrich W, Ullrich W PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | PENNSYLVANIA, COMMONWEALTH OF |
| References | |
| NUDOCS 8603270213 | |
| Download: ML20210E136 (2) | |
Text
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ji fk PHILADELPHIA ELECTRIC COMPANY 2301 MARKET STREET P.O BOX 8699 PHILADELPHIA PA.19101 12151841 4000 March 15, 1986 Department of Environmental Resources Bureau of Water Quality Managonent One Ararat Blvd.
Harrisburg, PA 17110
SUBJECT:
Noncompliance with NPDES Permit Peach Bottom Atomic Power Station Permit No.
PA 0009733 Gentlemon DESCRIPTION OF NONCOMPLIANCE:
The total phosphorus of a sample from discharge point 501 (Sowago Treatment Plant) exceeded the permit limit for instantaneous maximum and the monthly average for the month of February, 1986.
Dato Sample Taken:
2/05/86 Date Results Received:
2/17/06 Results of Analysis:
4.3 mg/l
/l Monthly Average Analysis 4.3 mg/l Monthly Avorago Permit Limitation:
2.0 mg 4.0 mg/l Instantaneous Maximum CAUSE OF NONCOMPLIANCE:
The cause of the non-compliance is the sowago treatmont plant is not able to reduce the phosphorus to below the permit limit.
DURATION OF NONCOMPLIANCE:
The duration of the non-complianen has continued since the receipt of the now permit limits in October, 1905.
gbj 0603270213 060315 f
PDR ADOCK 05000277 S
PDR 0
k CORRECTIVE ACTION:
On February 10, 1986, addition of Nalco Ultrion 8155 (Aluminum Chloride Coagulant) was begun at the clarifier splitter box.
The system was.put in service using a manually operated feed system.
The first few days the system appeared to be working well and showed low levels of phosphorus (maximum 2.2 ppm as analyzed on sito using a Direct Current Plazma Spectrophotometer which is not an approved method at this time).
On February 18, 1986 af ter a holiday weekend there was a noticeable degradation in the sewage treatment plant operation.
A check of the aeration tank indicated a drastic reduction in biological activity.
The vendor was contacted and use of the Ultrion was discontinued to allow recovery.
Communication with the vendor inlicated that an overfeed may have occurred over the holiday weekend due to low plant flow rates.
The overfeed may have chocke:1 the system and resulted in the decline of the biological activity.
This pointed to the necessity of an automa ted chemical feed so that it will operate in proportion to system flow.
It has been determined that this could be accomplished by tapping into the signal that operates the sewage transfer pumps.
A site modification is in progress to tap this signal.
It is anticipated to have the Nalco system back in operation during the month of March, 1986.
Very truly yours, WWE W. T.
Ullrich Superintendent Nuclear Generation Division JAV/WTU:ala cc:
Environmental Protection Agency Director Water Permits Branch Office of Nuclear Reactor Pennsylvania Section 3WM52 Regulation 841 Chestnut Building US Nuclear Regulatory Comm.
Philadelphia, Pennsylvania 19107 Washington, DC 20555 Administrator Region I Of fice of Inspection and Enforcement US Nuclear Regulatory Commission 631 Park Avenue King of Prussia, Pennsylvania 19406
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