ML18153C644
| ML18153C644 | |
| Person / Time | |
|---|---|
| Site: | Surry, North Anna  |
| Issue date: | 06/05/1991 |
| From: | Stewart W VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| 91-277, NUDOCS 9106110238 | |
| Download: ML18153C644 (4) | |
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VIRGINIA ELECTRIC AND POWER COMPANY RICHMOND, VIRGINIA 23261 June 5, l99l 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 BLIND PERFORMANCE TEST RESULTS Serial No.
NURPC Docket Nos.
License Nos.91-277 50-280 50-281 50-338 50-339 DPR-32 DPR-37 NPF-4 NPF-7 Pursuant to 1 O CFR 26, Appendix A, Subpart B, §2.8 (e), Virginia Electric and Power Company has conducted an investigation concerning unsatisfactory blind performance testing results. Following discovery of two false positive samples by our Employee Health Services Department personnel, the Department of Health and Human Services (HHS) certified laboratory determined that an incorrect cut-off level had been applied for methaqualone. This discrepancy resulted in deviation from the cut-off levels for initial screening and confirmatory gas chromatography/mass spectrometry (GC/MS) required by the Company's Fitness for Duty (FFD) Program.
These results were initially reported to Mr. E.W. McPeek*of the NRG NRR Safeguards Branch staff in a telephone conversation on May 8, 1991. Attachment 1 contains a summary of our investigation.
Should you have further questions, please contact us.
.* Att,qc,tu:pent 1.iUU15 9106110238 910605
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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. M. S. Lesser NRC Senior 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
L ATTACHMENT 1 INVESTIGATION RESULTS
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e INVESTIGATION RESULTS On April 25, 1991, Company Employee Health Services personnel, while reviewing specimen test results reported by our Department of Health and Human Services (HHS) certified laboratory, determined that a potential administrative false positive error had occurred on blind performance test specimens. The incident was promptly reported to the NRC via telephone in accordance with 1 O CFR 26, Appendix A,
§2.8(e)(5).
These results involved blind performance testing specimens for methaqualone which were processed at Surry and North Anna Power Stations. The samples had negative screening results (<750 ng/ml) when tested at the onsite testing facility. Subsequently, the samples were reported by the HHS laboratory as confirmed positives for methaqualone at approximately 400 ng/ml.
The false positive report for methaqualone was due to the HHS laboratory use of cut-off criteria other than the 750 ng/ml cut-off level stipulated by our FFD Program.
The HHS laboratory applied an initial screening cut-off level of 300 ng/ml and a confirmation cut-off level of 200 ng/ml.
It should be noted that methaqualone is not on the panel of drugs to be tested for according to 1 O CFR 26, Appendix A, Subpart B, §2.1 (a).
Furthermore, use of methaqualone has never been detected in actual specimens by our FFD Program despite the fact that the HHS laboratory had always used the lower cut-off levels.
Methaqualone has only been detected in blind performance test specimens.
This discrepancy was corrected on May 2, 1991, when the screening and confirmation cut-off levels were adjusted to the proper program value of 750 ng/ml. No further actions are required with respect to administration of cut-off levels by the HHS laboratory.
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