ML20054F798
| ML20054F798 | |
| Person / Time | |
|---|---|
| Site: | LaSalle  |
| Issue date: | 06/08/1982 |
| From: | Holyoak R COMMONWEALTH EDISON CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| RO-82-65, RO-82-66, NUDOCS 8206170338 | |
| Download: ML20054F798 (8) | |
Text
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LaSalle County Nuclear Station f
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Rural Route #1, Box 220
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l Marseilles, Illinois 61341
(/ Telephone 815/357-6761 TO - h '7 b l
June 8, 1982 Mr. James G. Keppler Regional Administrator Director of Regulatory Operations - Region ill U. S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, Illinois 60137
Dear Sir:
In accordance wi th LaSalle County Station Unit 1 Facility Operating License NPF-11, Appendix B, Section 3 2, we are submi tting to you a copy of the NPDES noncompliances for LaSalle County Nuclear Generating S tation Permi t No. IL0048151.
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R. H. Holy Superi en LaSalle Count Station RHH/GW/djp Enclosure cc:
DVR Report 1-1-82-65 DVR Report 1-1-82-66 l
8206170338 820608 PDR ADOCK 0S000373 S
PDR t4UN 14 ec Zh O
DEVIATION REPORT
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- 82
- 66 STA t'N I T YEAR NO.
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T. E Cr CEvisT:0N CCCUSSEC 5/26/82 1300 Fac.lity High iron Cor. centration Wastewater Treatment i
rySTru ArrECTED PLANT STATUS AT TIME OF EVENT TESTING k
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Was tewater Trea tmen t Faci li ty ef fluent iron concentration of 7.0 mg/1, determined on 5/26/82, from composite sample of 5/15/82.
Due to extremely low WTF pH of 3 5 s.u. previously reported in DVR 1-1-82-40.
This is in excess of NPDES Permit limit for total iron concentration of 1.0 mg/l and is reportable under tech. spec. Appendix B, section 3.2.
10 CrR$0.72 NRC RED FHONE O
O NOTIFICATION MADE YEs NO ECJiFYENT rAgtygt 0 Es Dr
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Lawless DATE
/27/82
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01 01 STA UNIT YEAR NO.
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t 5/26/82 1300 Regenerative Waste Solution Discharge Tank OWM03T 5TEY AFFECTED FLANT STATUS AT TIME Or EVENT TESTING O
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. LOADtMAE) n ygg y3 r!:C'PTION CF EVENT Regen. Waste Soln. Disch. Tank, 0WM03T, high iron concentration of 3.1 mg/1, determined on 5/26/82, from composite sample of tank discharged on 5/20/82.
Due to temporary failure of peroxide injection pump.
Peroxide pump had lost suction pressure due to a bend in feed hosing, which was straightened out, and later replaced. This is in excess of NPDES permit limit for total i ron of 1.0 mg/l and it reportable under Tech. Spec. Appendix B, section 3 2.
ic CrRSO.72 NRC RED PHONE O
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DEVIATION REPORT NUMBER:
C1-01-82-66 11.
LASALLE COUNTY STATION:
Unit 1 Ill. EVENT DESCRIPTION On May 26, 1982, it was determined that the Regenerative Wastes Solution Discharge Tank,.0WM03T, discharged on May 20, 1982, had an effluent total iron concentration of 31 mg/1, as determined from a composite sample of that tank.
This exceeded the N.P.D.E.S. Permi t limi t of 1.0 mg/l for total Iron and is reportable under Appendix B, section 3 2 of the Technical Specifications.
IV.
PROBABLE CONSEQUENCES OF THE OCCURRENCE This occurrence did not affect the health and safety of the general public.
This is a common occurrence to the Regen. Wastes Soln. Disch. Tank and will undoubtedly continue until the system modifications under FCR # LOO 72 are completed.
V.
CAUSE The well water hydrogen peroxide system injection pump failed due to a collapsed suction tube.
This tube collapsed due to its thin walls.
This prevented the injection of hydrogen peroxide into the well water to aid in the removal of iron and solids when it passes through the Greensand Filters.
VI.
CORRECTIVE ACTION The sucti'on tubing was replaced with a thick walled vacuum type tygon tubing
?f any arranged to minimize the number of bends and possible kinks in the tubing.
The peroxide injection system is awaiting a permanent installation on FCR
- LOO 72.
Action item Record 1-82-301 has been submitted to track this FCR for completion by approximately September 1, 1982.
Prepared by:
Paul Knoll
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DEVIATION REPORT NUMBER:
01-01-82-66 11.
LASALLE COUNTY STATION:
Unit 1 lit. EVENT DESCRIPTION On 5/26/82, it was determined that the Wastewater Treatrent-Facility (WWTF) had an effluent total iron concentration of 7.0 mg/1, as determined from a composite sample obtained 5/15/82.
This condition was as a direct result of the low WWTF effluent pH reported in DVR #01-01-82-40 and continued until 5/24/82.
This exceeded the N.P.D.E.S. Permi r limit of 1.0 mg/l for total iron and is reportable under Appendix B, section 3.2 of the tech. specs.
IV.
PROBABLE CONSEQUENCES OF THE OCCURRENCE This occurrence did not affect the health and safety of the general pubyc.
This is not a frequent occurrence.
V.
CAUSE On 5/12/82, the M.U.D. acid sump, 0WM06, overflowed 3 tires during regeneration of H.U.D.
train B.
This overflow went to the M.U.D. clean sump, OWM05, and eventually to the WWTF.
This resulted in lowering the pH of the WWTF to 3.5 S.U.
The WWTF was not sampled until 5/14/82, at which -time all discharges to this outfall were sampled to determine the cause.
However, all these discharges had returned to within allowable pH limits.
The low pH of the Wastewater resolubilized the coagulated iron and solids resulting in these solids passing y
through the Media Filters into the effluent. ~
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VI.
CORRECTIVE ACTION No corrective action was taken to return the WWTF to inspect operation as the plant had a full inventory of water and there was no available space to transfer the water for neutralization.
The clean sump manhole cover has been securely fastened to aid in preventing further in-leakage.
A work request, #15738, has been submitted to change the acid sump level alarm as a further aid in preventing sump overflows.
Further inves tigations have shown that the orifice plates in the backwash lines could have been lef t out during the last maintenance on the Makeup Demins.
Work requests, #15895, 15896, 15898, have been submitted to replace the orifice plates.
Prepared by:
Paul Knoll
Commonwealth Edison LaSall? County Nuclear St tion Rural Rout: 01. Box 220 Marsmil;s. I!!inois 61341 Telephone 815/357-6761 1
June 3, 1982 U. S. Environmental Protection Agency Region V, Enforcement Division ATTN:
Chief, Compliance Unit 230 South Dearborn Street Chicago, Illinois 60604 tilinois Environmental Protection Agency Division of Water Pollution Control Compliance Management Unit 2200 Churchill Road Springfield, Illinois 62706
SUBJECT:
NPDES Noncompliances for LaSalle County Nuclear Generating Station Permit No. ILOO48151 r
Dear Sir:
- 3. -
Y in accordance with Standard Condi tion 12, we wish to submit the following-notices of noncompliance. The Cooling Pond was blowing down at the time ~
of these noncompilances.
If there are any questions, please contact Mr. Charles L. Nash of unr staff, at (815) 357-6761, extension 235
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([R. H. Hol suo6.un uperinte e RHH/
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- Attch, Director of Water Quality, Environmental Affairs cc:
LASALLE COUNTY NUCLEAR GEhTRATING STATION N.P.D.E.S. PERMIT NO:
ILOO48151 NONCOMPLIANCE REPORT DISCHARGE NUMBER AND DESCRIPTION:
001c - Low Volume Waste Wastewater Treatment Facili ty (WTF)
PARAMETER AND PERMIT LIMIT:
Total Iron, 1.0 mg/l NONCOMPLIANCE, DATE, AND DURATION:
-7.0 mg/1,15MAY82, continuous till 24MAYB2 CAUSE OF NONCOMPLIANCE:
On 5/12/82, the M.U.D. acid sump, OWM06, overflowed 3 times during regeneration of M.U.D. train B.
This overflow went to the M.U.D. clean sump, OWM05, and eventually to the M F.
This resulted in lowering the pH of the WTF to 3 5 S.U.
The WWTF was not sampled until 5/14/82, at which time all discharges to this outfall were sampled to determine the cause.
However, all these discharges had returned to within allow-able pH limits.
The low pH of the Wastewater resolubilized the coagulated iron and solids resulting in these solids passing through the Media Filters into the effluent.
CORRECTIVE ACTION:
No corrective action was taken to return the WTF to inspect operation as the plant had a full inventory of water and there was no available space to transfer the water for neutralization.
.The clean sump manhole cover has been securely fastened to aid in preventing further in-leakage.
A work request, #15738, has been submitted to change the acid sump level alarm as a further aid in preventing sump overflows.
Further investigations have shown that the orifice plates in the backwash lines could have been lef t out duringthe last maintenance on the Makeup Demins. Work requests, #15895,15896, and 15898 have been submitted to replace the orifice platgs.
DATE RECOGNICED AS A VIOLATION:
26MAY82 DATE INVESTIGATED:
LASALLE COUhIT NUCLEAR GENERATING STATION N.P.D.E.S. PERMIT NO:
ILOO48151 NONCOMPLIANCE REPORT DISCHARGE NL'MBER AND 3ESCRIPTION:
001c - Low Volume Waste Regenerative Wastes Solution Discharge Tank PARAMETER AND PERMIT LIMIT:
Total tron, 1.0 mg/l NONCOMPLI ANCE, DATE, AND DURATION:
3 1 mg/l, 20MAY82, 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> CAUSE,0JF, NONCOMPLIANCE:
The well water hydrogen peroxide system injection pump failed due to a collapsed suction tube.
This tube collapsed due to the thin tubing walls, preventing the injection of hydrogen peroxide to aid in the removal of iron.and solids by the Greensand Filters.
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CORRECTIVE ACTION:
The suction tubing was replaced with a thick walled vacuum type tygon tubing and arranged to minimize the number of bends and possible kinks in the tubing.
The system is awaiting a permanent installation on FCR # LOO 72.
27MAY82 DATE RECOGNIZED AS,A VIOLATION:
27MAY82 DATE IhTESTICATED:
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