ML18153D349
| ML18153D349 | |
| Person / Time | |
|---|---|
| Site: | Surry, North Anna  |
| Issue date: | 06/02/1993 |
| From: | Stewart W VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| 93-284, NUDOCS 9306080003 | |
| Download: ML18153D349 (6) | |
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VIRGINIA ELECTRIC AND POWER COMPANY RICHMOND, VIRGINIA 23261 June 2, 1993 United States Nuclear Regulatory Commission Attention: Document Control Desk Washington, D. C. 20555 Gentlemen:
VIRGINIA ELECTRIC AND POWER COMPANY SURRY POWER STATION UNITS 1 AND 2 NORTH ANNA POWER STATION UNITS 1 AND 2 FITNESS FOR DUTY PROGRAM Serial No.93-284 NURPC Docket Nos. 50-280 50-281 50-338 50-339 License Nos. DPR-32 DPR-37 NPF-4
- NPF-7 BLIND PERFORMANCE TEST INVESTIGATION RESULTS Pursuant to 1 O CFR 26, Appendix A, Subpart B, §2.8 (e)(4), on May 4, 1993, Virginia Electric and Power Company performed an investigation concerning blind performance testing results. Details of the apparent discrepancy and the ensuing investigation are included in Attachment 1. A letter from the HHS-certified laboratory _
concerning the follow-up investigation is included in Attachment 2.
Should you have any questions, please contact us.
Very truly yours,
.f\\t~~
\\~ 3~-:::('"'-
- w. L. Stewart Senior Vice President - Nuclear Attachments
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9306080003. 930602
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PDR ADOCK 05000280 P
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U. S. Nuclear Regulatory Commission Region II 101 Marietta Street, N. W.
Suite 2900 Atlanta, Georgia 30323 Mr. M. W. Branch NRC Senior Resident Inspector Surry Power Station Mr. D. R. Taylor NRC Resident Inspector North Anna Power Station Mr. L. L. Bush U. S. Nuclear Regulatory Commission Division of Reactor Inspection and Safeguards MS 9D24 One White Flint North 11555 Rockville Pike Rockville, Maryland 20852
ATTACHMENT 1 BLIND PERFORMANCE TEST INVESTIGATION RESULTS e
BLIND PERFORMANCE TEST INVESTIGATION RESULTS During a review of blind performance test results, a sample (Specimen No.
02874316400), which had screened as positive for methaqualone (~750 ng/ml) at our on site testing facility at Surry Power Station on January 27, 1993, was identified by Company Employee Health Services personnel to have been screened by our Department of Health and Human Services (HHS) certified laboratory with negative results (<750 ng/ml). On January 29, 1993, we directed our HHS laboratory to provide the quantitative value of the specimen (Specimen No. 02874316401 ). The follow-up gas chromatography/mass spectrometry (GC/MS) confirmatory test confirmed the presence of methaqualone at 607 ng/ml.
As a result, we requested our HHS laboratory to provide an explanation and documentation of their initial screening and subsequent confirmatory testing (GC/MS) performed on the specimen in question.
In the meantime, we independently verified that the subject blind sample provided by our supplier had indeed been spiked with methaqualone. A NIDA-certified laboratory performed screening and confirmatory testing on an aliquot from the batch from which the blind sample was produced. The aliquot screened positive for methaqualone using an 800 ng/ml standard and was then confirmed by GC/MS at 1020 ng/ml.
A copy of the HHS laboratory letter which describes the analysis process and results is enclosed in Attachment 2.
Page 1 of 1
e ATTACHMENT 2 HHS-CERTIFIED LABORATORY LETTER DATED APRIL 15, 1993
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. CDMPUCHEM lABoPAlc>RB, INC.
a subsidiary Of Roche Blomedical Laboratories, Inc.
P.O. Box,.2 3308 Chapel HIII/Nalson Highway ResNICh Triangle Putc. NC 2n09 (918) ~9-8263 April 15, 1993 Hr11. Nancy Cross
.Employee Hea1th services Virginia Power P.O. Box 26666 Richmond, Virginia 23261 Re:
spec. #02874316400 Retest 02874316401 CCN 74992462 CNN 72218928 Dei!!lr Ms. Cross:
The specimen referenced above was receivec:l at the Roche CompuCbem laboratory on January 28, 1993.
The specimen was subjected t~
analysis using the pre-estab1ished drug pro:tile #725200.
Tha specimen results:, were negative attar the initial teating.
The.
report was transmitted to Virginia Power on January 28, 1993.
A request for retest at the limit of detection (LOD) for methaqualone was received on January 29, 1993.
The GC/MS ana1ysis confirmed the presence of methaqualone at 607 ng/mL.
This result was reported on February 5, 1993.
The test profile #725200 utilizes a mathaqualone acreening cut-off of 750 ng/mL.
A sample containing 607 ng/mL would screen "negative" and be reported as negative. All controls run with the initial test were within acceptable limits.
It you need additional information, please call me at 919-248-6703.
Sincerely,
~V.tZP'h Paulas. Childs, Ph.D., D-ABFT Vice President Toxicology Operations PSC/lm