ML18010B082

Annual Environ (Non-Radiological) Operating Rept

ML18010B082
Person / Time
Site:	Harris
Issue date:	12/31/1992
From:	Vaughn G CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
HO-930076, NUDOCS 9305040182
Download: ML18010B082 (22)

Text

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II FACIL:50-400 Shearon Harris Nuclear Power Plant, Unit 1, Carolina 05000400 AUTH.NAME AUTHOR AFFILIATION VAUGHNFG.E.

Carolina Power

& Light Co.

RECIP.NAME RECIPIENT AFFILIATION

SUBJECT:

"Shearon Harris Nuclear Power Plant, (Non-Radiological) Operating Rept."

W/930 ual Environ

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DISTRIBUTION CODE'E25D COPIES RECEIVED'LTR C ENCL 2 SIZE'0 TITLE: Environmental Monitoring Rept (per Tech Specs)

NOTES:Application for permit renewal filed.

D 05000400

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RECIPIENT ID CODE/NAME PD2-1 LA LE,N INTERNAL:

R REG FILE 01 GN2 FILE 02 EXTERNAL: EG&G SIMPSONFF COPIES LTTR ENCL 3

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NOTE TO ALL"RIDS" RECIPIENTS:

PLEASE HELP US TO REDUCE WASTE! CONTACT TFIE DOCUMEN'I'ONTROLDISK, ROOM Pl-37 (EXT. 504-2065) TO ELIMINATEYOUR NAME FROM DISTRI!3UTION LISTS FOR DOCUMENTS YOU DON'T NEED!

TOTAL NUMBER OF COPIES REQUIRED:

LTTR 14 ENCL 14

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CHI&L Carolina Power & Light Company P.O. Box 165 ~ New Hill,NC 27562 G.E.VAUGHN Vice President Harris Nudear Plant APR 5 0 f99g Letter Number:

HO-930076 NRC-808 Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555 SHEARON HARRIS NUCLEAR POWER PLANT

,DOCKET NO.

50-400 LICENSE NO. NPF-63 ANNUAL ENVIRONMENTAL NONRADIOLOGICAL OPERATING REPORT Gentlemen:

In accordance with Section 5.4.1 of the Environmental Protection Plan issued as Appendix B of the Operating License (NPF-63) for the Shearon Harris Nuclear Power Plant, Unit No.

1, Carolina Power and Light Company herewith submits the enclosed Annual Environmental (Nonradiological) Operating Report for 1992.

Yours very truly, G.

E. Vaughn Vice President Harris Nuclear Plant MGW:dmw Enclosu'r'e cc:

Mr. S.

D. Ebneter (NRC-RII)

Mr. J.

E. Tedrow (NRC-SHNPP) 030046

.MEM/HO-930076/1/OS1 9305000182 921231 PDR ADOCK 05000400 R

PDR

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SHEARON HARRIS NUCLEAR POWER PLANT UNIT 1 ANNUALENVIRONMENTAL (NONRADIOLOGICAL)

OPERATING REPORT APPENDIX B for January 1, 1992-December 31, 1992 CAROLINAPOWER 2 LIGHT COMPANY Docket No. 50-400

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1.0 INTRODUCHON Carolina Power 2 Light Company (CP&L) received a low-power Facility Operating License (No. NPF-53) and full power Facility Operating License (No. NPF-63) for the Shearon Harris Nuclear Power Plant, Unit 1 (SHNPP), from the U.S. Nuclear Regulatory Commission (NRC) on October 24,

1986, and January 12,

1987, respectively.

Appendix B (the Environmental Protection Plan [nonradiological]) of the full power license requires submittal ofan Annual Environmental (nonradiological) Operating Report to the NRC describing the implementation of the plan during the previous year.

The purpose of this document is to fulfillthe requirement for the period of January 1, 1992, through December 31, 1992.

2.0 ENVIRONMENTALMONITORING

[EPP Section 4.2]

2.1 Aquatic Monitoiing Under the authority of the Clean Water Act, the state of North Carolina reissued a National Pollutant Discharge Elimination System (NPDES) permit (NC0039586) for the SHNPP on November 1, 1991.

This permit will remain in effect until March 31, 1996. The current permit reflects a reclassification of the facility from a Class II to a Class IIIdesignation.

The Class IIIdesignation rating requires that the laboratory analyses performed on all effluent samples be performed by a laboratory certified by the state.

The SHNPP Environmental and Chemistry Laboratory was certified as a Waste Water Laboratory by the North Carolina Division of Environmental Management (NCDEM) during 1992 with the certificate effective January 11, 1993.

Another consequence of becoming a Class IIIfacility was that the sampling frequency for the analysis ofbiochemical oxygen demand, total suspended solids, and fecal coliform of the sanitary waste treatment plant increased from twice per month to daily du'ring 1992.

2.1.1 Effluent Monitoiin Routine effluent monitoring was conducted and reported to the NCDEM as required by the NPDES permit. NPDES noncompliances that occurred and the number of noncompliances attributed to each occurrence during 1992 were:

A.

Overflow ofNormal Service Water Strainer Backwash Sur e Basin The service water strainer backwash valve was left in the manual mode from 2045 hours0.0237 days <br />0.568 hours <br />0.00338 weeks <br />7.781225e-4 months <br /> on March 9, 1992, until 0230 hours0.00266 days <br />0.0639 hours <br />3.80291e-4 weeks <br />8.7515e-5 months <br /> on March 10, 1992.

The backwash basin which contains approximately 11,872 gallons is believed to have contained most of the backwash water. However, the basin overflowed, spilling on the ground with a few hundred gallons entering a storm drain that

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discharges into Harris Lake to the right of the causeway (on State Road 1135) entering the plant site. The normal discharge point for the strainer backwash water is the cooling tower blowdown discharge.

This discharge did not exceed permit limitations and visual inspection of the pump area and storm drain discharge revealed no adverse environmental impact.

(1-Noncompliance)

Sewa e Pum Station Overflow On May 11, 1992, at approximately 1030 hours0.0119 days <br />0.286 hours <br />0.0017 weeks <br />3.91915e-4 months <br /> SHNPP personnel discovered an overflow of a small sewage pump station (20 gallon capacity) due to failure ofthe electric pump. Water from the pump station migrated to a storm drain about 50 feet away.

Bathrooms and other sources of water wer" promptly secured to prevent any further leakage.

A replacement pump which was available on-site was put into service that day. A small amount of water entered the storm drain.

There was no evidence of a discharge from the pipe which discharges into Harris Lake to the right of the causeway (on State Road 1135) entering the plant site.

(1-Noncompliance)

C.

Coolin Tower Blowdown Zinc Dischar e Exceedance During the period of July 13-27, 1992, the SHNPP experienced an elevated level of zinc in the Cooling Tower Blowdown Discharge (Outfall No. 001). The event was believed to have been caused by zinc concentration within the biological growths existing in the cooling tower basin and subsequent release as conditions in the tower changed.

In order to optimize operating conditions and to reduce the amount of discharge to the lake during June 1992, the plant staff reduced the cooling tower blowdown from approximately 6 million gallons per day (MGD) to approximately 3 MGD. This resulted in water chemistry changes within the tower

'ystem, including an increase in pH from 7.5 to 8.3.

The pH increase resulted in a considerable decrease in effectiveness of chlorination used to control biological growth within the system.

On July 12 the cooling tower blowdown increased (to as great as 15 MGD), causing the pH to drop from 8.3 to 7.5.

At the lower pH, the chlorine dosage was much more effective and began to eliminate some of the biological growths that had accumulated during the period at higher pH. The addition of zinc to the system was temporarily discontinued.

However, because the biological growth layer was an excellent trap for sediment and other material, such as zinc, the removal and decay of this layer added additional zinc to the cooling tower discharge.

(12-Noncompliances)

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Sewa e Treatment Plant Fecal Coliform Exceedance On July 20, 1992, the Sewage Treatment Plant Discharge (Outfall No. 002) exceeded the daily limit for fecal coliform with a value of 1600 colonies per 100 ml.

The sewage treatment plant chlorination system was found leaking along the discharge piping at 1000 hours0.0116 days <br />0.278 hours <br />0.00165 weeks <br />3.805e-4 months <br /> on July 20, 1992.

The daily composite and grab samples were taken with the free and total chlorine levels at

< O.l ppm. Allinfluent to the plant was secured to prevent further discharge of plant effluent.

The chlorination system piping was repaired and placed back into service and the plant influent was restored at 1330 hours0.0154 days <br />0.369 hours <br />0.0022 weeks <br />5.06065e-4 months <br /> on July 20, 1992.

A free chlorine residual of 0.5 ppm was determined at 1645 hours0.019 days <br />0.457 hours <br />0.00272 weeks <br />6.259225e-4 months <br /> on July 20, 1992.

(1-Noncompliance, Received A Notice of Violation)

B~ass of Oil/Water Se grater On August 21, 1992, the Harris Plant experienced a bypass of the oil/water separator.

A temporary line was installed to pump approximately 1,336 gallons of water from the turbine building sumps to the oil/water separator in order to inspect equipment.

The temporary line broke loose at a coupling and the water reached storm drains because the valve in the dike around the oil/water separator was left open.

The released water was pumped from the storm drains into the waste neutralization basin, which is where the temporary bypass line had been piped.

All remedial actions were completed by the afternoon of August 21, 1992.

(1-Noncompliance)

On November 18, 1992, the Harris Plant experienced a broken sewage pipe.

At approximately 1100 hours0.0127 days <br />0.306 hours <br />0.00182 weeks <br />4.1855e-4 months <br /> on November 18, 1992, water was discovered on the ground on the plant site near the sewage treatment plant.

The water, which was determined to be from a broken pipe, collected in a low area and did not discharge into waters of the state.

Bathrooms and other sources of water were promptly secured to prevent any further leakage.

The broken pipe was repaired and the system was put back in service by 2300 hours0.0266 days <br />0.639 hours <br />0.0038 weeks <br />8.7515e-4 months <br /> on the same day.

(1-Noncompliance)

Noncompliances with the NPDES permit were corrected promptly and were not of an ongoing nature.

Noncompliances were reported to NCDEM with no

'dditional actions required by NCDEM.

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2.1.2 Other Also reported to the appropriate state and federal agencies during 1992 were the following three events.

A.

~oil S ill On February 3, 1992, approximately 300 gallons ofturbine lube oil spilled when a level cut-off valve on the turbine filter system failed to close.

The oil spilled to and was contained in a secondary containment structure.

The valve was repaired and is being inspected more closely to prevent a

recurrence of the'event.

The NCDEM was notified.

H drazine Release On January 20, 1992, approximately 2.2 pounds of hydrazine (Reportable Quantity =

1 pound) were released when an estimated 3697 gallons of a dilute hydrazine solution spilled from the "A" auxiliary boiler.

The spill occurred while plant personnel were preparing for a boiler inspection.

The spill was discovered at 1100 hours0.0127 days <br />0.306 hours <br />0.00182 weeks <br />4.1855e-4 months <br /> and most of the=solution had drained into a storm drain located approximately 100 feet away.

Eleven storm drains located between the spill point and the catch pond at the head of the drainage ditch which could have contained hydrazine were tested on January 21, 1992 for hydrazine and pH.

Approximately 6900 gallons of water were removed from the six drains that had tested positive for hydrazine.

The catch pond was monitored for hydrazine beginning January 20, and ending January 22, 1992.

The cleanup was completed on January 22, 1992. No hydrazine reached Harris Lake. As follow-up to the release, plant personnel received additional training and a containment dike was built around the boilers to preclude repetition of the release.

The Wake County Emergency Management, the North Carolina Emergency Response Commission, and the National Response, Center were notified. A written follow-up report was provided to these agencies on February 4, 1992.

Waste Sodium~Hdroxide Release

'n June 13, 1992, approximately 374 pounds of waste sodium hydroxide solution were released when a carbon steel nipple corroded on the underground piping between the Water Treatment Building and the Waste Neutralization Basin.

The nipple corroded where it was attached to the stainless steel pipe., Most of the solution was in the area of the leak, but a small quantity did reach a storm drain.

The solutions in the area of the spill and in the affected storm drain

~ were pumped to the Waste Neutralization Basin.

The storm drain system was monitored and there was no release to Harris Lake. The area around the spill was cleaned and the pipe was repaired with appropriate materials.

The release was in excess of the 100 pound Reportable Quantity for a corrosive hazardous

waste but did not exceed the 1000 pound Reportable Quantity for sodium hydroxide.'he National Response Center was notified; however, it was not-reporte'd under the Emergency Planning and Community Right-to-Know Act because it was not an extremely hazardous substance and it did not affect anyone outside the site boundaries.

2.1.3 Biolo ical Monitorin During April 1992 one Asiatic clam Corbicula flun>inca was collected from the main intake canal near the main intake structure.

During October 1992 one Asiatic clam was collec'ted at the mouth of the main intake canal.

Cursory

.observations made during other sampling on Harris Lake indicated that the Asiatic clam continues to slowly spread throughout the reservoir.

Asiatic clams caused no biofouling of plant water systems.

During 1992 monitoring for zebra mussels Dreissena polynioipha was initiated.

Areas of likely infestation (i.e., public boat ramps) as well as the main intake structure and canal were monitored.

No zebra mussels were found during 1992 and monitoring will continue during 1993.

During June and July 1992 while performing maintenance activities on the service water strainer, significant quantities ofPluniatella eniarginaIa (bryozoans or moss animalcules) were encountered in the make-up pump piping that had fouled the normal service water screens.=

The colonial animals had entered through the cooling tower make-up piping. There was minimal operational impact as a result ofthis biofouling. During the Fall 1992 outage, the make-up lines were inspected and some growths were found, but not in significant quantities.

Although no remedial action=- is planned at this time, the situation will continued to be monitored.

Since 1988 hydrilla Hydrilla verlicilaaa, a nonnative aquatic

weed, has been established in Harris Lake.

A survey made during the fall of 1992 revealed that hydrilla was established in water less than 9 feet deep in all major arms of the lake except for the Buckhorn Creek arm (the southernmost).

The total areal coverage was estimated to be approximately 1060 acres.

This value is only 10 acres greater that the coverage during the fall of 1991. Hydrilla was not observed growing in the auxiliary reservoir.

No impacts to Harris Plant operations from hydrilla have occurred nor are they expected because of the low velocity of water drawn into the cooling tower makeup water intake structure.

2.2 Tenzstiial Monitoiing Terrestrial monitoring is not required.

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2.3 Noise Monitoiing Noise monitoring is not required.

3.0 UNUSUALOR IMPORTANTENVIRONMENTALEVENTS

[EPP Section 4.1]

No occurrence of an unusual or important environmental event that would indicate or could result in a significant environmental impact causally related to plant operation occurred during the reporting period.

No releases or exceedances of permit conditions caused any significant environmental impact.

4.0 PLANT CONSISTENCY REQUIREMENTS 4.1 Plant Design and Operation

[EPP Section 3.0]

There were no changes in plant design or operation plans, and there were no tests or experiments performed which were considered to involve an unreviewed environmental question during the reporting period.

4.2 Repoifing Related to the NPDES Peimit All required NPDES monitoring data were submitted to NCDEM via monthly discharge monitoring reports and separate correspondence as warranted.

5.0 PLANT REPORTING REQUIREMENTS

[EPP Section 5.4]

'.1 EPP Noncompliances There were no EPP noncompliances identified during the reporting period.

5.2 Changes in Station Design There were no changes in plant design or operation plans, and there were no tests or experiments performed which involved a potentially significant unreviewed environmental question during the reporting period.

5.3 Nonmutine Repoits There were no nonroutine reports identified during the reporting period.

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6.0 EPP Audit

[EPP Section 5.1]

An audit conducted by an independent corporate entity was performed to verify the completeness and accuracy of the conditions and activities described in this annual environmental operating report.

The results of that audit are summarized in the attached letter.

C

CÃQE Carolina Power &Light Company April 27, 1993 Dr. G. J. Oliver Manager - Environmental Services Technical Services Department

Dear Dr. Oliver:

A review of the Shearon Harris Nuclear Power Plant Unit 1 (SHNPP)

Annual Environmental (Nonradiological) Operating Report (Report) was recently completed.

The Report is issued to comply with the reporting requirements of the U.S. Nuclear Regulatory Commission (NRC) established in Appendix B, the Environmental Protection Plan (Nonradiological), of the SHNPP Facility Operating License No. NPF-63.

The objective of the review was to assess the accuracy and completeness of the Report for the period January 1, 1992, through December 31, 1992.

The scope of our work was limited to a review of the

controls, procedures and supporting documentation related to the Report and interviews with SHNPP and Environmental Services personnel.

Based on the audit procedures performed, the Annual Environmental (Nonradiological) Operating Report appears to be complete, accurate, and in compliance with NRC reporting requirements.

We appreciate the excellent cooperation received from the Environmental Services and SHNPP personnel. Ifyou have any questions concerning this report, please do not hesitate to contact us.

Sincerely, Jeffrey M. Stone Audit Manager Audit Team:

Mr. F. E.White

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