ML20065D026
| ML20065D026 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley |
| Issue date: | 03/24/1994 |
| From: | Noonan T DUQUESNE LIGHT CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| Shared Package | |
| ML20065D029 | List: |
| References | |
| NPD3VPO:0198, NPD3VPO:198, NUDOCS 9404060180 | |
| Download: ML20065D026 (5) | |
Text
,f. '.
1 n
'Af Telephone (412) 393-6000 Nuclear Group P.O. Box 4 Shippingport, PA 15077 0004 March 24, 1994 F
NPD3VPO: 0198 t-Document Control Desk
.U.S.
Nuclear Regulatory Commission Washington, DC '20555 NPDES Monthly Report. EPA Permit No. PA0025615
SUBJECT:
Beaver Valley Power Station, Unit No. 1 and No.
2.
BV-1 Docket No. 50-334, License No..DPR-66 BV-2 Docket-No. 50-412, License No. NPF-73
Dear. Sir:
Enclosed is a copy'.of the NPDES Monthly Report as submitted to the Pennsylvania Department of Environmental Resources.
i Sincerely, e
T.
P.
oonan Division Vice President Nuclear Operations
'DNH/trs J
cc:
J..D. Sieber-D.
A.
Orndorf
~
4 S.
L'.
Pernick N.
R.
Tonet Central Fi'e 9404060100.940324 j ~
R b
The Nuclear Professionals g g f,,yg a w f6#
lj m
r
~
h 48 Teiephone t4121393-60G0 Nuc! ear Group P O Bou 4
$Nppingport PA 15077 CM4 5
March 24, 1994 NPD3VPO: 0200 United States Environmental Protection Agency Region III, Pennsylvania (3WM53)
D
' Water Permits Branch
. Water Management Division 841 Chestnut Street.
Philadelphia, PA 19107 NPDES Monthly Report, EPA Permit No. PA0025615
Dear Sir:
-This letter forwards a copy of_our NPDES Monthly Report as submitted to the Pennsylvania Department of Environmental Resources, Bureau of.Nater. Quality Management.
Sincerely, 8/
,d j
T.
P..Noonan
. Division.Vice President =
Nuclear Operations DNH/tra Attachment cc:
J.
D.
Sieber D.
A. Orndorf.
S.
L.
Pernick N.
R.
Tonet Central File l
<-(} '
gej
-The Nuclear Professionals a
~
s>
Tf A
Teiephone (4121393 6000 Nudear Group P O Bon 4
_. 15077 0004 Sn+ppingport PA March 24, 1994 NPD3VPO: 0199 Department of. Environmental Resources Bureau of Water Quality Management 400 Waterfront Drive Pittsburgh, PA 15222 NPDES Monthly Report, EPA Permit Number PA0025615 Gentlemen:
NPDES Monthly Report for Duquesne Light company, Beaver Valley Power Station for February 1994 is submitted for your consideration.
Please be advised that required techniques, even if performed
- properly, do not measure actual' conditions with 100 percent accuracy 100 percent of the. time, and therefore,:some reported values in the attached DMRs may not represent actual conditions with absolute accuracy.
Sincerely,
'l 0 f &
/
T.
P. Noonan.
Division Vice President
. Nuclear Operations
- DNH/trs Enclosure cc:
J.
D.
Sieber D.
A.
Orndorf S.
L.
Pernick N.
R. Tonet' Central File
' d The Nuclear Professionals
n
'L
'l
'Af Telephone (4121393-6000 M'LT"" -
Snippingport PA 15077 0004 March 24,'1994 NPD3VPO:0201 United States Environmental Protection Agency Region III, Pennsylvania (3WM53)
Water Permits Branch Water Management Division 841 Chestnut Street Philadelphia, PA 19107 EPA Permit No. PA0025615 Reportable Occurrence
Dear Sir:
As required by the EPA Permit No. PA0025615, the following information is provided in regard to reportable occurrences at Beaver Valley Power Station.
EPA Discharge 213, Unit 2 Cooling Tower Pump House Sump, exceeded the daily maximum.
specification for total suspended solids (TSS) of 100 mg/l in February 1994. The. February 17 and 24 samples were 143.5 mg/l and 141.3 mg/l producing a monthly average of 142.4 mg/l which also exceeded the monthly average yecification of 30.0 mg/1.
The pump house sumps receive water from the ecoling tower pump stuffing box leakage drains which is primarily from the circulating water system. The circulating water is recirculated river water having a total suspended solids concentration approximately equal-to thel river water. TSS has been higher than normal in the river water due to the periodic flooding which has occurred since the middle of January. This relatior. ship was demonstrated on February 25 with a river water sample ' TSS of 161.3 mg/l and the Unit 2 : circulating. water TSS of 186.2 mg/1.
' As the river water settles down and becomes less turbid, a decrease in TSS will occur in the circulating water which drains to the' sump and will result in a' discharge which is within the-specification. Additionally, we are evaluating other options which could reduce the total suspended solids discharged and maintain compliance. Plant maintenance and operations have.
been working to insure that the stuffing box leakage is minimized.~ The cooling tower pumps were all repacked in the Fall of 1993 and are working properly. The estimated average flow for 213 with leakage collected from all four cooling tower pumps is about I gallon / minute.
NPD3VPO:0201 Page 2 Since the quality of discharge #213 is directly affected by river water quality and the TSS of the discharge is equal to or less than the river, then no environmental impact or harm is expected to result from this discharge.
Any impact is also limited by the small volume of discharge 213 and its dilution of over 30:l' which occurs as 213 is combined with outfalls 113 and 313 prior to final discharge of 013.
Discharge 313, Unit 2 oil and water separator #21 exceeded. the daily maximum pH specification of 9.0 on February 22 when the sample pH was 9.5 at 09:05 AM.
The major sourco of water contributing to discharge 313 is the pump seal leakoff from secondary systerr pumps. Secondary system water is characterized by very high p_urity water maintained to a pH of 9.0 to 9.6 with a small amount of ammonia Since only about 4 ppm of ammonia is nc.cssary to produce this required level of pH in demineralized water, then the discharge pH of 9.5 on February 22 represents very little alkalinity. The water discharged from this outfall would' be immediately buffered to a more neutral pH as the discharge combined with discharges 113 and 213 prior to final discharge at 013.
Efforts were taken following this sample to reduce the portion of water entering oil and water separator 21 from secondary systems. A resample taken at 6:21 PM on the same day was an acceptable 8.07. No further occurrences have happened to date.
If you have any questions concerning this report, please do not hesitate to contact David A. Orndorf.
Sincerely, T. P. Noonan Division Vice President Nuclear Operations
)
DNH/ke Attachment ec:
J. D. Sieber D. A. Orndorf S. L. Pernick N. R. Tonet
.I Central File (2) - Keywords: NPDES Reportable Occurrence H
l