W3P85-1062, NPDES Noncompliance Notification:On 850527 & 28,heat Discharge Exceeded Permitted Limit.Caused by Temp Rise on Condenser Water Box During Isolation.On 850501,pH at Outfall 003 Registered 5.3.Oil/water Separator Sys Neutralized

NPDES Noncompliance Notification:On 850527 & 28,heat Discharge Exceeded Permitted Limit.Caused by Temp Rise on Condenser Water Box During Isolation.On 850501,pH at Outfall 003 Registered 5.3.Oil/water Separator Sys Neutralized

ML20127K098
Person / Time
Site:	Waterford
Issue date:	06/13/1985
From:	Barkhurst R LOUISIANA POWER & LIGHT CO.
To:	Knudson M ENVIRONMENTAL PROTECTION AGENCY
References
NN-850613, W3P85-1062, NUDOCS 8506270258
Download: ML20127K098 (2)

Text

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" LETTER REISSUED"

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" ORIGINAL DATED" June 13, 1985 W3P85-1062 3-A25.01.02 A4.10 Mr. Myron O. Knudson, P.E Director, Water Management Division Environmental Protretion 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 ef forts to correct the situation. The following list of dates, times and heat discharged completes the list of 9 heat load calculations which exceeded the permitted limit of 8.5 x 10 BTU /HR during May 1985.

We became aware of these additional instances while preparing the May DMRs on June 10, 1985.

HEAT DISCHARGED 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 the time the water box was out of service. This situation had a two-fold h62 S

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W3P85-1062 Mr. M.O. Knudson Page 2 (1) there was less flow through effect to increase the heat load calculation:

the system than used for this calculation, and (2) we are fairly certain that the outlet temperatures 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 was 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) 595-2846.

Very truly yours, ORIGINAL SIGN - 6/13/85 RPB R.P. Barkhurst Plant Manager-Nuclear RPB/CDG/use cc J. Dale Givens - LA DEQ US NRC 7.R D. Martin - Region IV G;W. Enighton"- NRR'{ ,