W3P85-1034, Discharge Monitoring Repts for Apr 1985

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Discharge Monitoring Repts for Apr 1985
ML20128R092
Person / Time
Site: Waterford Entergy icon.png
Issue date: 04/30/1985
From: Barkhurst R
LOUISIANA POWER & LIGHT CO.
To: Hartung R
ENVIRONMENTAL PROTECTION AGENCY
References
W3P85-1034, NUDOCS 8506040399
Download: ML20128R092 (14)


Text

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May 15, 198'S W3P85-1036 3-A25.01.02 A4.10 Mr. Myron O. Knudson, P.E. .

Director, Water Management Division

SUBJECT:

Waterford Steam Electric Station Unit Number 3 NPDES Permit No. LA 0007374

Dear Mr. Knudson:

On April 11, 1985, the flow at outfall 002 was 0.366 MGD which exceeded our permitted maximum flow of 0.232 MGD. We became aware of this noncompliance aon May 13, 1985 while preparing the Discharge Monitoring Reports (DMRs) for April 1985.

The exact cause of this unusually high flow is unknown, although there was overall a greater flow through this outfall this month than has been occurring. Flows for several days surrounding this day wers at least an order ~

of magnitude lower than this flow, and this one time-occurrence was the only exceedence during the month.

On April 21, 1985, the thermal discharge was calculated to be 1.0 x 1010 STU/hr which exceeded our permit limitation of 8.5 x 109 BTU /hr. We became aware of this apparent noncompliance also while preparing the April DMRs on May 13, 1985.

This parameter is calculated by multiplying the instantaneous temperature rise across the condenser by the flow ' occurring at that point in ti=e. This cal-culated 4-6 hours value appears to have exceeded our permitted limitation for approximately on April 21, 1985, however this value is artificially high. Only 5.of 6 condenser water boxes were in service during this time; the sixth was opened to inspect for leakage, so that although there were 4 circulating water pumps in operation, there was significantly less flow than what we credit 4 pu=p operation from pump curve data. Since there is no mechanism to compensate for this flow reduction, or to physically measure the flow rate, we are obligated to reportwe although and usethat know the full-flow 4 pump flow rate to calculate thermal discharge the actual flow rate was significantly less. Hence the actual value.

thermal discharge is significantly less than the reported, calculated

.W3P85-1036

.Page 2 -

Should'you'wish'to discuss this matter further, please contact Chadi Groc=e.

of our Nuclear Licensing Office at . (504) 595-2846.

Very truly yours, -

.i R.P. Barkhurst AL M Plant Manager-Nuclear RPB/CDG/ch cc: J. Dale Givens --LA.DEQ.

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M100LE SOUTH P O W E R & L I G H T / New caLeANE LCUSMA 70174-soc 8 9 (5C4) 386-234S UTIUTIES SYSTEM May 15, 1985 f

W3P85-1036 3-A25.01.02 A4.10 Mr. Myron O. Knudson, P.C.

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:

/

On April 11, 1985, the flow at outfall 002 was 0.366 MGD which exceeded our permitted maximum flow of 0.232 MGD. We beca=e aware of this noncompliance on May April 1985.

13, 1985 while preparing the Discharge Monitoring Reports (DMRs) for The exact cause of this unusually high flow is unknown, although there was overall a greater flow through this outfall this =onth than has been occurring.

Flows for several days surrounding this day were at least an order ,

of magnitude lower than'this flow, and this one time-occurrence was the only exceedence during the month.

On April 21, 1985, the thermal. discharge was calculated to be 1.0 x 1010 BTU /hr which exceeded our permit limitation of 8.5 x 109 BTU /hr. We beca=e aware of this apparent noncompliance also while preparing the April DMRs on May 13, 1985.

This parameter is calculated by multiplying the instantaneous temperature rise across the condenser by the flow occurring at that point in ti=e. This cal-culated value appears to have exceeded our permitted limitation for approxi=ately 4-6 hours on April 21, 1985, however this value is artificially high. Only 5 of 6 condenser water boxes were in service during this time; the sixth was opened to inspect for. leakage, so that although there uare 4 circulating water pumps in operation, there was significantly less flow than what we credit 4 pump operation from pump curve data. Since there is no mechanism to compensate for this flow reduction, or to physically measure the flow rate, we are obligated to reportwe although and usethat know the full-flow 4 pump flow rate to calculate thermal discharge the actual flow rate was significantly less. Hence the actual value .

thermal discharge is significantly less than the reported, calculated

. :o .

W3P85-l036~

'Page 2, -

Should you wish to discuss this matter further, please contact Chadi Groome of our Nuclear Licensing Office at (504) 595-2846.

, Very truly yours,

@,i AL R.P. Barkhurst Plant" Manager-Nuclear RPB/CDG/ch cc: J. Dale Givens - LA DEQ US NRC - R.D.' Martin - Region IV G,W. Knighton - NRR 4

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1201 Elm Street Dallas, Texas 75270

SUBJECT:

Waterford Steam Electric Station - Unit Number 3 NPDES Permit Number LA0007374

Dear Mr. Hartung:

As required by Part I.C.2 of the subject permit as administratively modified by your letter of September 12, 1983, Discharge Monitoring Reports (DMR's) for April 1985 are enclosed. Copies of this letter and the DMR's are also being submitted to the Office of Water Resources of the Louisiana Department of Envircnmental Quality.

Please note that although-I have signed each DMR, I am making the following certification which appears in 40 CFR 122.22(d) (published at 48 FR 39619 on September 1, 1983) in lieu of that printed on the DMR (EPA Form 3320-1 (Rev. 10-79)):

I certify under penalty of law that this document and all attachments were prepared under [my] direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and. imprisonment for knowing violations.

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Mr. Roger C. Hartung W3P85-1034'

.Page 2.

'Should you have any questions or comments, please contact Ms. Chadi Groome of our Nuclear- Licensing Office at _(504) '595-2846.

Yours very truly, d

R. P. 1;arkhurst Plant Manager-Nuclea'r -

RPB/CDG/sub Attachment cc (w/ Attachments): J. D. Givens - LA DEQ R. D. Martin - Region IV E3.I6TRNER

'NS40674SEG .

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