ML18153B041

NPDES Noncompliance Rept,Consisting of Initial Abatement Rept for SPS Petroleum Release Pc# 94-3824:on 940509,found Oil Sheen in Discharge Canal.Leaking Oil Line Taken Out of Svc & Interior of Pipe Inspected W/Boroscope

ML18153B041
Person / Time
Site:	Surry
Issue date:	08/11/1994
From:	Marshall B VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	James Anderson VIRGINIA, COMMONWEALTH OF
References
NUDOCS 9408260239
Download: ML18153B041 (3)

Text

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• '1 SPS/ENV44/SUBSURFOIL

• August 11, 1994 Mr. J. Meade R. Anderson, P.G.

Department of Environmental Quality Piedmont Water Regional Office P.O. Box 6030 Glen Allen, VA 23058 RE: PC# 94-3824 SURRY POWER- STATION UNDERGROUND OIL RELEASE*

INITIAL ABATEMENT MEASURES REPORT De~= ........

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The following is the Initial Abatement Report.for the Surry Power Station Petroleum Release, PC# 94-3824. The report was initially .

due June 13, 1994; however, we requested and received an extension until August .15*,- 1994. The Initial Abatement Measures Checklist is attached.

On May 9, 1994, station personnel noticed a fuel oil odor near the laundry storm drains *.. Personnel then checked the discharge canal and found an oil sheen in.the canal .. Operations dispatched a crew to respond to the oil in the discharge canal. The response team placed an oil containment boom at the west end. 0f the canal which, in conjunction with the existing boom, .contained all but a small amount of the oil. Personnel then accomplished cleanup using sorbent pads and "socks".

Station.personnel inspected all pipes and storm water conveyances leading to the discha~ge canal. No further discharge of oil was found nor was there*any evidence of additional oil.in any discharge route from the station. *

• Just prior to the discovery of the oil in the canal, the station had conducted a scheduled test run of an emergency diesel generator (EOG). Subsequent hydrostatic testing of the supply lines to the EOG indicated the existence of a leak. We believe that fuel oil leaked from the EOG supply lines and then made its way to the storm.

drain either directly or via the sand sump. . The sand sump is a dewatering sump used to lower the groundwater. level near the foundations of the plant buildings. The sump discharges to the storm drain where personnel noticed the fuel oil odor.

During the past few months, the station has been investigating the fuel oil line leak *. The leaking fuel oil line has been taken out of service. The interior of the pipe has been inspected with a boroscope, which allows personnel to view the inside surf ace of the pipe. Additionally, the station has pressure tested incremental lengths of the pipe in order to determine the exact location of the leak. The mechanism of failure has not yet been characteri*zed and the station is still attempting to determine the cause of the leak.

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Mr,. ~eade Anderson August 11, 1994

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Page 2 i The fuel oil lines are encased together in concrete~ The leaking line has been abandoned and the EOG switched to a spare line; therefore, the station did not have to excavate around the line .

. The only excavation required was for access to the line for testing. No petroleum contamination was apparent in the excavated soil. We know from existing wells on site that the depth to groundwater is approximately 17 feet. The underground fuel oil i lines are associated with two underground tanks, which, due to*

their emergency generator status, are exempt from the UST regulations. During the investigation of the line leak, *the st"ticn did ne:t enccuntar any frse product;.t!1.erefcre, no effort was made to measure or remove free product and there were no saf~ty or fire hazards requiring mitigation.

Following the installation of monitoring wells and a study to determine the extent of oil in the subsurface, we will submit a Site Characterization Report.

Please contact Wes Sprouse at 273-3552 if you have any questions.

Sincerely, B. M. Marshall, P.E.

Manager, Water Quality cc:* u. s. Nuclear Regulatory Commission

• Region II 101 Marietta st., NW Suite 2900 Atlanta, GA 30323 Re: Surry Units l & 2 Docket Nos. 50-280/50281 License Nos. DPR-32/DPR-37 Nuclear Regulatory Commission Document .Control Desk Washington, DC 20555 Re: Surry Units 1 & 2 Docket Nos. 50-280/50281 License Nos. DPR-32/DPR-37 Mr. M. w. Branch NRC Senior resident Inspector Surry Power Station

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'I-Enclosure 2 INITIAL ABATEMENT MEASURES REPORT CHECKLIST

• Site: $0cz.,iy ~"':'en..* <;."tAr,orJ PC# q4 *-3E.J.Lf Region  ?;~~Mo~*,

The following checklist must be filled out by the Responsible Party (RP) and/or the RP's Conswtant anct Included In the Initial Abatement Report. Indicate on the chackllst the page and HCtlon numbe wh.,. each Item 18 addressed In the attached repo,L Also Indicate on the checkllst the section and page number where Justification Is given for items omitted from the attached report., The contents of the report should reflect and be commensurate with the nature of the release, degree of contamination a~ complexlty of the site Investigation.

1. RELEASE INVESTIGATION AND CONFIRMATION STEPS

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Page; / .&Hele~ .

_.......__ / :l. Evidence for suspecting a release has occurred*

.___ / 't -'~-- *Monitoring result., from releea detection used Results of tank/fine tightness test I s Actions taken to repalr,-replace; upgrade UST- *

2. SITE CHECK

..---.I_. . . . I _...'f__ Measures taken to Identify the source of release 2.. , __ , _ Depth to ground water

.:L / _____ Description and Justification of sampllng

__2.._._ I J types (ground water, sol) .

_ _2....._*_ / > locations Qnclude site map)

_ _2-._ / parameters, EPA methods, units, and detection llmlts

3. INITIAL ABATEMENT MEASURES

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f , */ 5 Release Inspection resuts and measures taken to prevent further migration of contaminates Into soDs and ground water

JJ A 2-.

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• Regulated substance removed from UST system 2- I Efforts to mitigate fire and safety hazards

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I Efforts to measure for the presence of free product 7- 4 I Efforts to remove iree product z I I Measures taken. as part of lnltlal Abatement, to address contaminated ground water and sous; tank water and sludges,* and debris Q.e. tanks, piping, concrete) lncl_ude permits

/- I lnltlal Abatement M~res Report submitted within 20 days of release confirmation or*

extension granted FOR OFFICE USE ONLY COMMENTS:~---------------------------

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REVIEWED BY:,_.. _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ DATE: _ _ _ _ _ _ _ _ __