ML20127P616
| ML20127P616 | |
| Person / Time | |
|---|---|
| Site: | Waterford  |
| Issue date: | 03/31/1985 |
| From: | Barkhurst R LOUISIANA POWER & LIGHT CO. |
| To: | |
| Shared Package | |
| ML20127P614 | List: |
| References | |
| NUDOCS 8507020471 | |
| Download: ML20127P616 (5) | |
Text
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incompliance notifications attached.This number represents the number of calendar days during which this parameter
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LouisiAma P O W E R & L I G H T! WATEAFOAO 3 SES
- P O. BOX B e KFLLONA. LA 70066 "uNYs sysE June 4, 1985 W3P85-1052 3-A25.01.02 A4.10 Mr. Myron O. Knudson, P.E.
Director, Water Management Division Environmental Protection Agency Region VI First International Building 1201 Elm Street Dallas, Texas 75270
SUBJECT:
Waterford Steam Electric Station Unit Number 3 NPDES Permit No. LA 0007374
Dear Mr. Knudson:
The following table lists a series of apparent noncompliances to our NPDES permit which occurred during May 1985 at outfall 001.
There is a permit limitation on heat discharged from this outfall of 8.5 x 109 BTU /HR.
HEAT DISCRARCED DATE TIME 109 BTU /HR 5/7 0200 9.27 0600
'9.57 5/8 0200 9.02 5/9 0200 9.02 2000 9.12 5/11 0400 9.42 0600 9.62 1000 10.8 5/21 0000 10.2 0400 11.6 0600 11.6 5/22 0000 9.52 0200 9.77 0400 9.62 0600 10.0 0800 9.27 1000 8.57 1400 9.22 1600 10.0 1800 9.67 2000 8.92 2200 9.57
W3P85-1052 Page 2 HEAT DISCHARGED DATE TIME 109 BTU /HR 5/23 0000 10.4 0200 10.0 0400 9.67 0600 9.87 1600 9.87 It was determined that these values should be reported as exceedences on May 29, 1985,after reviewing the daily log sheets in preparation for the May DMRs, although we feel that there are conditions within the Circulating Water System (CWS) that cause the thermal discharge calculated to be higher than the actual heat discharged.
The heat discharged is an arithmetic value dependent upon both the instantaneous temperature change across the condenser and the flow occurring at that point in time.
It_is thought that there are some factors in the CWS which are causing the actual flow through the system to be less than the pump curve data used to determine flow.
There are indications, for example, that condenser back pressure has been elevated.
We are evaluating all possible system parameters which could affect the thermal discharge calculation, and methods to more accurately assess CWS flow Although this ef fort is a priority, it is quite involved and this rate.
situation may continue for some time, until the evaluation is completed and resulting changes cr.n be implemented.
On May 22, 1985, the TSS concentration at outfall 004 was 56 mg/1, which exceeded the permit limitation of 45 mg/1. We became aware of this noncom-pliance when telephoned by our contract laboratory on May 30, 1985.
This exceedence is attributed to elevated solids levels in the plant.
The BODS concentration was well within compliance levels, so treatment is being effected in the plant.
In addition to normal maintenance activities, personnel are paying particular attention to plant conditions and effluent quality.
It is anticipated that if this outfall has not already returned to compliance, it will do so by June 5,1985, the next scheduled sampling day.
Should you wish to discuss this matter further, please contact Chadi Groome of our Nuclear Licensing Office at (504) 595-2846.
Very truly yours,
* ss Nt P B Plant Manager-Nuclear RPB/CDG/ch cc: J. Dale Givens - LA DEQ US NRC - R.D. Martin - Region IV G.W. Knighton - NRR
"LCTTER REIS5*JED" LOUISIANA P O W E R & L iG H T! WATEAFCAD 3 SES + P O BOX 8 e K!LLONA LA 70066 EuMdrsNU
" ORIGINAL DATED" June 13, 1985 W3P85-1062 3-A25.01.02 A4.10 Mr. Myron O. Knudson, P.E Director, Water Management Division Environmental Protection Agency Region VI Firest International Building 1201 Elm Street Dallas, Texas 75270
SUBJECT:
Waterford Steam Electric Station Unit Number 3 NPDES Permit No.
LA 007374
REFERENCE:
Louisiana Power & Light Company Letter Number W3P85-1052 from R.P. Barkhurst to M.O. Knudson dated June 4, 1985
Dear Mr. Knudson:
The referenced letter listed several incidents of apparent noncompliance with our NPDES permit, and detailed both our evaluation as to their cause and our efforts to correct the situation. The following list of dates, times and heat discharged completes the list of beat load calculations which exceeded the permitted limit of 8.5 x 109 BTU /HR during May 1985.
We became aware of these additional instances while preparing the May DMRs on June 10, 1985.
HEAT DISCRARGED DATE TIME 109 BTU /HR 5/27/85 0000 16.0 0200 14.2 0400 14.2 0600 14.8 5/28/85 0000 8.57 0600 8.52 On May 27, 1985, a condenser water box was isolated during the noncompliance period. The temperature rise across the condenser both just prior to and just after isolation of this water box was approximately 15 F less than during 0
the time the water box was out of service. This situation had a two-fold I
W3P85-1062 Mr. M.O. Knudson Page 2 ef fect to increase the heat load calculation:
(1) there was less flow through the system than used for this talculation, and (2) we are fairly certain that the outlet temreratures recorded were from this water box. These would have been higher than the outlet temperatures from the water boxes which had water flowing through them.
As discussed in the referenced letter, we are evaluating the system operation and data collection practices in order to discern the nature of the dif-ficulties we have been experiencing. The plant returned to compliance for this parameter by 8:00 A.M. on May 28, 1985.
On May 1, 1985, at approximately 8:00 A.M., the pH at outfall 003 was 5.3 SU, which was below the permitted range of 6-9 SU. Another sample collected about an hour and a half later indicated that the pH vas 5.8 SU. A caustic solution was added to neutralize the contents of the oil / water separator system, and a sample collected later in the day verified that the outfall had returned to compliance. Although we prepared a letter regarding this noncompliance within the required 5-day period,.it came to our attention on June 7, 1985, that the letter may not have been mailed. We are including this discussion in this letter to insure that notification of this noncompliance is made to your office.
Should you wish to discuss this matter further, please contact Chadi Groome of our Nuclear Licensing Office at (504) 595-284.6.
Very truly yours, CRIGINAL SIGN - 6/13/85 RPB R.P. Barkhurst Plant Manager-Nuclear RPB/CDG/ usa ec J. Dale Givens - LA DEQ US NRC - R.D. Martin - Region IV G.W. Knighton - NRR
,