ML20209E349
| ML20209E349 | |
| Person / Time | |
|---|---|
| Site: | North Anna |
| Issue date: | 12/31/1986 |
| From: | Stewart W VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| To: | NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| References | |
| 87-237, NUDOCS 8704300029 | |
| Download: ML20209E349 (24) | |
Text
-
VIRGINIA ELECTRIC AND POWER COMPANY NORTH ANNA POWER STATION t
UNITS 1 and 2 4
APPENDIX B ENVIR0 MENTAL PROTECTION PLAN 1986 ANNUAL REPORT DOCKET N0s. 50-338 and 50-339 l
1 870430 % $ $b30 PDR A
PDR l
R
. Introduction i
This 1986 Environmental Operating Report for the North Anna Power Station is submitted by the Virginia Electric and Power Company as required under Section 5.4.1 of Appendix B, Environmental Protection Plan (EPP). The objectives of the EPP are to verify that the power station is operated in an environmentally acceptable manner; to coordinate NRC requirements and maintain consistency with other federal, state and local requirements; and to keep NRC informed of the environmental effects of facility construction and operation.
During 1986, no significant adverse environmental impact occurred as a result of the operation of North Anna Power Station, Units 1 and 2.
Aquatic issues are addressed in the licensee's NPDES permit number VA 0052451 issued by the Virginia State Water Control Board and the NRC relies on this agency for regulation of matters involving water quality and aquatic biota. Listed below are the summaries and reports as required under Section 5.4.1 of the EPP.
Plant Design and Operation (Section 3.1)
The Nuclear Regulatory Commission (NRC) approved the proposed core l
uprating for North Anna on August 25, 1986. This uprating did not increase the heat rejection rate above the NRC approved maximum for the station and so the environmental report did not need revision.
The biological effect of the increase in rejected heat of about 4.5% due to the core uprating was addressed in the 316(a) study and the results of this study were accepted as a successful j
demonstration by the Virginia Water Control Board (VWCB) in September, 1986.
The design rated BTU limit was maintained unchanged in the permit, i
. Herbicide Application:
Corridor Rights-of-Way (Section 4.2.1)
No herbicide's were used for brush control on the North Anna-Midlothian, North Anna-Louisa, or the North Anna-Ladysmith 500 KV lines during 1986.
In addition, no herbicides were used for brush control on the North Anna-Gordonsville 230KV line during 1986.
1 Erosion Control Inspection (Section 4.2.2)
Erosion inspection on right of way was made on the North 4
Anna-Midlothian, North Anna-Louisa, and North Anna-Ladysmith 500 KV lines and the North Anna-Gordonsville 230 KV line on July 24, 1986. Locations were recorded where erosion was taking place on the North Anna-Gordonsville, North Anna-Midlothian, North Anna-Louisa and the North Anna-Ladysmith lines. Most of these locations noted were caused by vehicle travel up and down the right of way. These areas were disced, fertilized, seeded, and mulched with additional straw bales being installed to prevent erosion.
Station Site In 1986, onsite erosion control inspections were performed at North l
Anna by the Performance and Test Department on January 17, June 4, and October 17, according to procedure 1-PT-9.3.
The January inspection did not report any j
significant erosion problems. The June and October inspections indicated erosion had occurred next to the security barriers in the area of service water reservoir construction, but repair cannot take place until construction in this area has been completed.
_,-..w.---
y.,-
__,,,,,,_,,_.7-.
.....,,.,-__.,__-_,-w-.
._---,..__.,r
. Soil erosion was discovered under the concrete drainage ditch for the oil separator on the bank behind Parking Lot B, and after the October inspection, a Request For Work was submitted to the Engineering and Construction Department to fill in the hole. Repairs had not been completed by the end of 1986.
It was noted on the October inspection report that trees on both sides of the slope west of the Unit 1 and 2 intake structure (Dike 6) were to be removed. This has been accomplished. Minor soil erosion was noted during the October inspection on the west side of the Unit 1 and 2 intake structure. This area will be inspected again during the first inspection of 1987 and corrective
[
measures may be necessary at that time.
i Noncompliances (Section 5.4.1)
There were no Environmental Protection Plan noncompliances reported during 1986.
Nonroutine Reports (Section 5.4.2)
Enclosed are copies of letters detailing the occurrence of seven NPDES noncompliances (pages 5-13), four oil spill (pages 12-17) and three unusual discharges (pages 16-20) which were filed during 1986 in which appropriate federal and state agencies were notified. None of the reported events resulted in a significant environmental impact causally related to station operation.
4-316(a) Study (Section 2.1)
On June 24, 1986 we submitted a final report of a Section 316(a) demonstration for the North Anna Power Station to the Virginia Water Control l
Board. The study, as allowed under Section 316(a) of the Clean Water Act, provided biological, physical and chemical data and analyses to ascertain whether thermal effluent limitations based on the State's water quality standard for Lake Anna and the North Anna River are more stringent than necessary to protect the aquatic community. On September 22, 1986, the Board accepted the 316(a) study as a successful demonstration that limitations of thermal effluent from the power station other than the BTU limit currently in our NPDES permit are not necessary to assure the protection and propagation of a balanced, indigenous community of shellfish, fish and wildlife in and on Lake i
Anna and the North Anna River (page 21). The NPDES permit is expected to be modified in early 1987 to reflect our successful completion of the 316(a) demonstration.
9 l
Hydroelectric Power Project i
Construction is progressing on a 900 KW, hydroelectric facility at the 4
main dam of Lake Anna, the cooling reservoir for North Anna Power Station.
Approval was received in September of 1984 by the Federal Energy Regulatory Commission (FERC) for exemption of the hydroelectric power project from licensing. Correspondence was made with the NRC concerning this project in 1984. Construction of the project was initiated in March, 1986. This project is expected to be completed by May 1, 1987, undergo two months of testing and go on line June 30, 1987.
vr--
.r-.e-n.,-,,
,,n..
e---- - -, ---.- - -
,---m--,--------e
. ~~ ~----
r
'Y t J: %w h-M CCR is rF April 3,.355 CED~~;*E: " 1.' '.
RERRN JECE ?' OECUESTED Mr. Wil ? iam '.. Meegloe State Water Control Board
'/ alley Degional Office 116 North Main Street D. O. Box 268 Bridgewater,'/irginia 22812 North Anna Power Station - NPDES Permit Exceation Cear Mr. Kregioe:
This is to confirm our earlier report of an NPOES pemit exception that occurred at North Anna Power Station.
Based on a sample taken March 25, 1986, the average BOD concentration in the y
effluent from the permanent sewage treatment plant (discharge no. 011) for March,1986 was determined to be 39.81 mg/1.
Station personnel are of the coinion that the high concentration is the result of sludge turnover becught about by the warm weather recently experienced in the area.
To bring the plant back into compliance, a portion of the flow has been diverted to the septic tank and drainfield system so as to allow better equalization of temperatures.
If you have any questions or desire additional information, please co not nesttate to contact us.
Sincerely, 4
e
- 8. M. Yarshall Manager Water Cuality
\\
%#.c u_ l
. q p,y~g.,. cm,.
.a
... s C00 12-H April 23, '936 Mr. W. L. Kregloe State Water Control Board Valley Regional Office 116 North Main Street P. O. Box 268 Bridgewater, Virginia 22812 North Anna Power Station - NPDES Permit Exceotion Cear Mr. Kregloe:
This is to confirm the report made to you on Friday, April 18 regarding an inadvertent acidic discharge from the oil / water separator at North Anna Power Station.
The discharge resulted in an exception to our NPDES cermit !imits for pH at Outfall'C04 At approximately 2:30 p.m., April 18, 1986, an operator pumping the cil/ water separator to the discharge canal noted a strong acidic odor and sto:::ec operation. Cn investigation it was discovered that sulfuric acid fece a demineralizer sump entereo a cerron su~o during pumping.
Our best esticate is that ro more than 2000 gal of acidic solution was discharged to tne canal.
The cd in the oil / water secarator was determined to be 2.27.
To orevent everflow to tne turoine ficer, 2400 gallons of partially neutrali:ec sciutitn was directed to the settling pond.
The discharge from this pond, Cutrali CC9, is manually controlled and no discharge has been made.
The pH in the conc v.as determined to be 6.87 after receiving the acidic solution.
Station personnel noted six dead bluegills, one to three inches in lergth, around Outf all 004 in the discharge canal.
Biologists recovered three of the fish for positive identification and continued to observe the area.
'o otrer j
adverse effects could be identified.
Nearly all the acid in the demineralizer sump has been removed by a hazarcus waste contractor and we feel the situation is under control.
If ycu have anj questicns regarding this incident or would like to tour the facilities to fully appreciate the circumstances of this exception, feel free to contact 7.
Sincerely.
B. M. Marshall i
Manager j
Water Quality GRK/yo cc:
Dr. J. Nelson Grace I
Mr. Harold R. Denten Mr. ti. W. Branch
4
~ "
G/3M ff COR 10-06 June 4, 1936 VIRGINIA POWER i
Mr. Willian L. Kregloe
- State Water Control Board Valley Regional Office 2
116 Nortn Main Street P. O. Box 268 Bridgewater, Virginia 22812 4
NPDES Violations at North Anna Power Station and the Satn Ccunty Pum:eo Starace Fac111ty Cear Mr. Kregloe:
The Marcn Discharge Monitoring Reports for the two referenced facilities contained permit exceptions for which additional information has been requestec.
In March, North Anna Pcwer Station violated the daily average SOD: at Cutfai 011.- The orcblem was brought about by unseasonably warm daytime weatner wnur.
r3f sed the tencerature of the wastewater in the clarifier.
When nignttime terceratures drocced to nearer normal, the uopermost portion of the wastewater coolec causing the temperature differential which causes the colder, neavier 4
water en too to sink and the water to " roll" dislodging scme of the inccepletely cecceposed sludge.
To prevent further violations of 800, flew from the clarifier was slcwec ::
increase retention time and allow foh temperature equalization.
Since the i
station dces not have additional settling ca:acity, the options are to crec a bleed line into the equalization tank thereby increasing the return f!cw from the clarifier to the aeration tank or to divert some of the flow to a sectic tank drainfield.
There is little way to accurately predict when :nis Or:ble-will arise, though it typically occurs at change of seasons, early seriag ar:
late fall.
Also in Maren, the Bath County Pumped Storage Facility exceeded TSS limitations at Outfall 001.
This was caused by the inadvertent additien :f an estimated 15 to 25 gallons of the solvent Safety-Kleen 105 Solvent-MS.
Ne solvent was being used by contractors to clean electrical equipment in ne generator bay area.
Spent solvent was placed in portable toilets,'..nicn
. 3.
..,3...:.--
e.r '.s. ea.d tna 3 9W3 99 II9 3 '~9 0 "- 0 30I" hI Or 3 3
e '.,.i e '* S
- gir 3 :93-S :jsc # ROC *"e gere"St0P 03/ 3F93 0 ' " S u re.,,3
)
2<.....
C O e 5 " 0 *.
'9 0's f.
Sincere.s./.
1
./
/
- 3. M. Ma rsd311 Ma na ge r Water Cuality
3
(:'*
COR 14-C6 August 10, 1986 VlftGINIA POWEtt CERTIFIED MAIL RETURN RECEIPT RECUESTED Mr. R. 8. Chewning, P.E.
Regional Ofrector Virginia Water Control Board Valley Regional Office 116 North Main Street P. O. Box 268 Bridgewater, Virginia 22812 North Anna power Station - Discharge Monitoring Recorts Cear Mr. Chewning:
Enclosed are two copies of the Discharge Monitoring Reports for July,1936, from our North Anna Power Station.
We are including a copy of the Re: ort of Operation for the sewage treatment facf11ty (Outfall 011).
As you know, this report is required by and prepared specifically for the Virginia Water Control Board.
It presents truly, accurately, and completely the observed results of the measurements and analyses required by the State to be performed or submitted, but only such observed results.
It is not interced as an assertion of the accuracy of any instrument, reading or analytical result, nor is it an endorsement of the suitability of any analytical or measurement procedure.
This letter also reports an exception to conditions of our permit that occurred on July 10.
Sampling for chlorine analysis, required daily at Outfall 011, was inadvertently omitted on that day. Unclear instructions were given to the changing shift regarding the sampling point so no official sample was obtaired.
In the future, written instructions will be prepared for turnover to avoid su:n errors.
If you have any questions or comments concerning this report, please contact this office.
Sincerely p
- 8. M. Marshall
/
Manager Water Quality
Enclosures:
OMRs (2 sets)
Report of Operation GRK/yo
- 1; * $j. 4 C C R.* * -C 6 VIRGINIA POWER October 10, 1986 CERTIFIED MAIL RETURN RECEIPT RE00ESTED Mr. R. B. Chewning, P.E.
Regional Director Virginia Water Control Board Valley Regional Office 116 North Main Street P. O. Box 268 Bridgewater, Virginia 22812 North Anna Power Station - Discharge Monitoring Reoorts Cear Mr. Chewning:
Enclosed are two cocies of the Discharge Monitoring Reports for Septercer, 1986, from our North Anna Power Station. We are including a copy of the Recort of Operation for the sewage treatment facility (Outfall 011).
As you know, this recort is requirea by and prepared specifically for tne Virginia Water Control Board.
It presents truly, accurately, and cercletely the observed results of the measurements and analyses required by the State to be performed or submitted, but only such observed results.
It is not intenced as an assertion of the accuracy of any instrument, reading or analytical result, nor is it an endorsement of the suitability of any analytical or measurement procedure.
This letter also reports exceptions to conditions of our permit that cccurred in September.
Samples were not taken at Outfall 013 for pH, ISS, oil and grease, and flow since a malfunctioning run timer failed to indicate that the sumo cump was activated during the month.
These circumstances were previcusly reported in our letter of October 3,1986.
In addition, on September 20, 1926, sampling for chlorine, required daily at Outfall 011, was inadvertently omitted.
Increased activity due to Unit 1 startup caused the oversignt.
The requirement for sampling was reemphasized with station personnel.
-w.
._e.,_,
~ -, _ _.., -
,--..-,,,r, y-_,
_m---
.r,,m.,,
,,---,--.-.4%,w-
,7
- li -
"r. :. i. : e'.vri g, ?.E.
hge '.:. '
Oc t:::er '.:, '986 If you nave any cuestions er ccrrents concerning this recort, clease c:n:> :
- nis office.
Sincerely, j. ~;h.... :.a.g. W '* 1' 3E'. Q J
.t 4r.d W V
B. M. Marsnall Manager Water Cuality
Enclosures:
DMRs (2 sets)
Report of Operation
FLE COPY O
October 3, 1986 y,,,,,o.,,
CERTIFIED MAIL RET (JRN RECEIPT REQUESTED Mr. William L. Kregloe State Water Control Board Valley Regional Office 116 North Main Street P. O. Box 268 Bridgewater, Virginia 22812 Re: North Anna Power Station - Report of Oil Spill and NPDES Excursions
Dear Mr. Kregloe:
This is to confirm our earlier report of an oil spill that occurred on September 29, 1986 at our North Anna Power Station.
The incident was reported to Mr. Steve Netrick in your affice.at 1100 hours0.0127 days <br />0.306 hours <br />0.00182 weeks <br />4.1855e-4 months <br />.
At approximately 1000 hours0.0116 days <br />0.278 hours <br />0.00165 weeks <br />3.805e-4 months <br />, station personnel observed a small oil sheen near the intake structure for condenser cooling water on Lake Anna.
The oil appeared to come from overflow of a catch basin underneath the storm drain that carries discharge from the turbine building basement sump.
The skirmer pump which normally regulates flow from the sump to the oil water separator was operating at reduced capacity and heavy flow into the sump necessitateo operation of the high capacity sump pump.
The high flow apparently allowed some oil to be carried over with the discharge.
Absorbent pads were immediately placed in the catch basin to remove oil from the surface and stop the overflow to the lake.
The basin was later pum:ed anc cleaned.
An absorbent boom was set to contain the oil sheen on the lake's surface and then the sheen was removed with absorbent material.
The amount :f oil actually reaching the lake was estimated to be less than 1 liter and no adverse envirenrental impact was observed.
While reviewing the cause of the oil spill and the end of the month Discharge Monitoring Report data, it was discovered that the run timer on the hign capacity sump pump did not trip when the pump ran.
Since the timer did not indicate any elapsed time, no samples were obtained for Outfall 013 for the month of September.
Therefore, sampling requirements of our NPDES permit for pH, TSS, oil and grease ard flow were not fulfilled.
Mr. William L. (reglee Dage 2 Cet::er 3,.'326 As corrective action, the skierer pump will be repaired to full capacity so that use of the high eacacity sump Oumo will be minimized.
If this nign capacity puro is manually activated, the catch basin will be enecked for oil and timer operation verified.
Sincerely,
=i
- 8. M. Marshall Manager Water Quality GRK/mhs cc: Dr. J. Nelson Grace Mr. Harold R. Denton Mr. M. W. Branch to
7M Sh
. we 43 r
77D...
February 25. !?26 y,,,,,,,,,,
Mr. W t.. Kregice Virginia Water Control Board 7 alley Pegional Office 116 North ttain Street P. O. Box 268 Bridgewater, Virginia 22812 North Anna power Station - 011 50111
Dear Mr. Kregioe:
This letter confirms our earlier report of an oil spill at North Anna Pcwer Station.
Pat Humohreys in your office was notified February 21,1986 a t approximately 9:40 a.m.
At 9:00 a.m. on February 21 station personnel discovered a light sheen of oil covering approximately 20 scuare feet on the surface of the discharge canal at North Anna Pcwer Station.
The source of the oil was observed to be a storm drain collecting runcf* frem the parking lot.
A permanently installed becm immediately adjacent to the storm drain had ccme loose allowing the sheen to migrate down the canal.
The resconse to tnts spill by station personnel was to repair the boom and place absorbent pads in the area.
Additional absorbent pads were placed on both sides of the boom permanently deployed at the end of the discharge canal.
All of the oil was contained within the discharge canal and no adverse environmental impact was observed.
Due to the nature of this spill, no specific corrective action was taken.
If you desire additional information regarding this incident, please contact this office.
Sincerely, 4
s B. M. Marshall Manager Water Quality GRX/mbs
x w. ~o n,..
!L -
3
- r'I CO*Y O
July 14, 1986 y,,,,4 rowen Mr. W. L. Kregloe Virginia Water Control Board Valley Regional Off Se 116 North Main Street P. O. Box 268 Bridgewater, Virginia 22812 Re:
North Anna Power Station - Oil Spill
Dear Mr. Kregloe:
It has come to our attention that an earlier report of an oil spill at North Anna Power Station was not confirmed by letter.
With this letter, we are confirming the notification made to Mr. Mac Sterrett in your office on June 6, 1986 at 1350 hours0.0156 days <br />0.375 hours <br />0.00223 weeks <br />5.13675e-4 months <br />.
At 0830 hours0.00961 days <br />0.231 hours <br />0.00137 weeks <br />3.15815e-4 months <br /> on June 4,1986, a barely visible sheen of oil was discovered behind the permanently deployed boom around NPDES Outfall 004 No specific event could be determined as the cause of the sheen but Outfall 004 is the discharge from the oil / water separator which takes flow from station sumps.
In response, station personnel placed absorbent pads behind the bocm to remove the sheen.
No oil escaped the boom but was contained within the discharge canal. No adverse environmental impact was observed.
Due to the limited nature of the spill and the absence of any identifiable cause, no specific corrective action was taken.
We apologize for any inconvenience the delay of this report may have caused.
If you desire additional information about this incident, please contact this office.
Sincerely,
/flo B. M. Marshall Manager Water Quality GRK/mbs
~ '~
_E COPY ET/::
( C:)
\\*
Octater 27, 1986 CERTIFIED MAIL RETURN RECEIPT REQUESTED Mr. W. L. Kregloe Virginia Water Centrol Board Valley Regional Office 116 North Main Street P. O. Box 268 Bridgewater, Virginia 22812
Dear Mr. Kregloe:
Re: North Anna Power Station - Oil S0111 and Unusual Discharge of Resin This letter clarifies earlier reports of oil spills on October 22 and 24, 1986.
Since your office was notified of these discharges, additional information has been obtained that indicates the substance discharged on October 22 was not oil but a type of resin.
On October 22 station personnel were cleaning out a turbine building s ro in which resh had collected in preparation for skimmer pump maintenance.
Personnel were assigned to observe the discharge into a catch basin while the high capacity pump was activated for a few minutes to lower the level in tre sumo.
No oil was observed in the basin or in the lake at the intake area wnile pumping took place.
Approximately 10 minutes later at 10:56 a.m., a small amount of a substance, presumed to be oil, appeared on the lake surface near the outfall from the turbine building sumps (NPDES Outfalls 012, 013, 014).
The substance was contained by a permanent boom in place around the discharge and removed using absorbent pads and sweeping.
Later that day at approximately 1:00 p.m., a small amount of this same substance aopeared outside the permanent boom placed around NPOES Outfall CC4 in the discharge canal.
The substance dissipated before any cleanup could :e affected.
Both of these incidents were reported as oil spills, but upon further investigation, station personnel were able to identify the substance as a polystyrene resin that had overflowed the sump.
To prevent further occurrences, the resin was removed from the sump.
Cleaning of the sump and repair of the skirmer pump have been completed.
On October 24 at approximately 12:00 p.m., another small amount of an oily substance was observed behind the permanent boom at Outfall 004 on the discharge canal.
While the substance did not react exactly like oil, a camphor on water test of a sample of the substance tested positive for ci
Mr. W. L. (regloe Page 2 October 2. *?!6 It was first tnought that this incident was related to the previous cres, but on further investigation, it was discovered a pump which removes tne oil layer from the oil / water separator to a holding tank had been inocerable for scme time.
The pump nad been repaired and returned to service but a large builduo of sludge had occurred while the pump was not operating.
The oil / water separator was subsequently desludged.
All corrective actions have been completed and it is assumed that cleaning actions and repairs will prevent reoccurrence. No adverse environrental impacts were observed as a result of these incidents.
If you have any further questions regarding these incidents, please contact this office.
l Sincerely, B. M. Marshall Manager Water Quality cc: Dr. J. Nelson Grace, USNRC Occket No. 50-338/50-339 Mr. Harold R. Denton, USNRC Occket No. 50-338/50-339 Mr. M. W. Branch, USNRC Docket No. 50-338/50-339
9
- la -
M l~
Fm'c CO?Y *..~
C00 11-p _0. 6 June 19, 1986 Mr. William L. Kregloe State Water Control Board Valley Regional Office 116 North Main Street P. O. Box 268 Bridgewater, Virginia 22812 North Anna Power Station - Unusual Discharge
Dear Mr. Kregloe:
This is to confirm the report made to you on Monday, June 16 of an unusual discharge to North Anna Lake.
The discharge originated from the primary equalization tank of the main sewage treatment plant at our North Anna Pcwer Station.
At approximately 1445 hours0.0167 days <br />0.401 hours <br />0.00239 weeks <br />5.498225e-4 months <br />, station personnel observed overficw from a manhole proceeding to a storm drain.
On investigation it was found that the equalization tank pump had tripped off line causing the level in the tank to rise exerting back pressure on the main sewage line from the station.
This caused a backup to the manhole and resulted in flow to the storm drain.
Orainage from this source flows to a 1500 gallon catchbasin which discharges to the lake.
The catchbasin was known to contain at least 1400 gallons of stormwater runoff at the time of this incident.
It was determined that the overflow occurred for approximately one hour.
It is estimated that no more than 50 gallons of raw sewage reached the catch basin where it underwent considerable ('1:30) dilution before being discharged to the lake.
Upon discovery the equalization pump was restarted, lowering the level in the tank and stopping the overflow.
The catch basin was pumped and cleaned to prevent further discharge.
A condition of "no flow" was observed by the operator over the weekend but the implications of that condition were not understood.
This lack of experience can be overcome with additional training and should prevent recurrence of such an incident.
t'r. Wil'4 3
.. <reglce Page 'ec. 2 June 19, 1986 Should you have further questions regarding this incident, please don'*
hesitate to contact this office.
Sincerely.
0r141. 1 Signed % _'-
NNIAEL F. EADLL M l
- 8. M. Marshall l
Manager Water Quality 1
i GRK/yo l
cc:
Dr. J. Nelson Grace Mr. Harold R. Denton Mr. M. W. Branch
FLE COPY m.m_
COR M-06 i s,n :n August 3. 1926 CERTIFIED MAIL RETURN RECEIPT REQUESTED Mr. William L. Kregloe State Water Control Board Valley Regional Office 116 North Main Street P. O. Box 268 Bridgewater, Virginia 22812 Re:
North Anna Power Station - Unusual Discharge
Dear Mr. Kregloe:
This is to confirm our earlier report of an unusual discharge that occurred at North Anna Power Station.
At approximately 12:45 p.m. on August 5,1986, the automatic level controller for the bearing cooling water tower malfunctioned. Approximately 1500 gallons of bearing cooling water were released to the condenser cooling water discharge canal.
Upon discovery, station personnel imediately secured the overflow and placed the level controller in the manual position.
To prevent a recurrence, the faulty controller will be repaired.
If you have any questions or desire additional information, please do not hesitate to contact us.
Sincerely, 4W D
y-[ M.rA 518n0F.WLM g
..g B. M. Marshall Manager Water Quality RLB/chs cc: Dr. J. Nelson Grace Mr. Harold R. Denton Mr. M. W. Branch
COMMONWEALTH of VIRGINIA STATE WATER CONTROL BOARD n,<mera n.eurson 21II Hamilton Street Enwutive Oirector pne Office 80s 11143 n,cemona, virgima 23230 1143 1804) 2S 70056 EXCERPT FROM THE PROCEEDINGS OF THE BOARD AT ITS MEETING OF SEPTEMBER 22, 1986 MINUTE #19 - VIRGINIA POWER - NORTM ANNA 316(a) l The staff presented an outline of the history of Virginia Power's 316(a) demonstration at the North Anna power station and the staff's conclusions and recommendations stemming from their review of the final report.
Following the staff presentation, the Board adopted the following recommendations:
1.
The Board accepts Virginia Power's June 1986 final report on the North Anna 316(a) study as a successful demonstration that limitations of thermal effluent from the North Anna power station other than the Btu limit currently in their NPDES permit are not necessary to assure protection and propagation of a balanced, indigenous community of shellfish, fish and wildlife in and on Lake Anna and the North Anna River.
2.
The Board directs the staff to modify the NPDES permit for Virginia Power's North Anna power station to reflect their successful completion of the 316(a) demonstra np C * "/
APPROVED:
Alan J; Anthony, Director Office of Environmental Research and Standards DATE:
VINUINIA EI.ucTule ann l'owen COMI*ANY Hacitxoxo,VanoixrA 200r,1 W. I,. StMWANT Vars l'ammIpmNT Na7ra. mas ormaatsome April 24, 1987 U. S. Nuclear Regulatory Commission Serial No.87-237 Attention: Document Control Desk NAPS /JHL:jmj Washington, D. C. 20555 Docket Nos. 50-338 50-339 License Nos. NPF-4 NPF-7 Gentlemen:
VIRGINIA ELECTRIC AND POWER COMPANY NORTH ANNA POWER STATION UNITS 1 AND 2 ANNUAL ENVIRONMENTAL OPERATING REPORT Enclosed is the 1986 Annual Environmental Operating Report for North Anna Units 1 and 2.
This report is required by Facility Operating License Appendix B, Environmental Protection Plan.
Very truly yours, W. L. Stewart Attachment
// 0 mI '\\\\
cc:
Dr. J. Nelson Grace Regional Administrator Region II Mr. J. L. Caldwell NRC Senior Resident Inspector North Anna Power Station 1
4 4
1 1
l i
.. -. - -