ML20058B794
| ML20058B794 | |
| Person / Time | |
|---|---|
| Issue date: | 10/23/1990 |
| From: | Bush L Office of Nuclear Reactor Regulation |
| To: | Bush D HEALTH & HUMAN SERVICES, DEPT. OF, U.S. PUBLIC HEALTH |
| References | |
| NUDOCS 9010300431 | |
| Download: ML20058B794 (2) | |
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k UNITED STATES 4
NUCLEAR REGULATORY COMMISSION e
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October 23, 1990 l
l, Dr. Donna Bush
'i Chief, Drug Testing Section Division of Applied Research National Institute on Drug Abuse 5600FishersLane(Room 9-A-54-)
Rockville, Maryland 20857
Dear Dr. Bush:
Forwarded for your action in accordance with Section 2.8(e) of Appendix A to l-10 CFR Part 26, are 4 reports of investigations from Portland General Electric L
Company.
l 1.
Letter, dtd 2/28/90, reports a false negative on a blind performance test reported by American BioTest Laboratories, Santa Clara, California. The i
error was caused by the-failure of a laboratory technician to properly L
calibrate the immunoassay equipment. The root cause was determined to be failure by the laboratory to establish an adequate procedure.
2._
Letter, dtd 5/25/90, reports a false negative on a blind performance test reported'by Laboratory Pathology, Seattle, Washington. Sample-degradation was ruled out, and the report concludes that the probable cause was that certain physiological parameters unique _to that specimen caused inter-ference with.immunoassay screening instruments, but did not affect the GC/MS: technology.
'3.
Letter, dtd 6/21/90, reports a false ~ negative on a blind performance test reported' by Laboratory Pathology.
The cause of the error was reported-to be incomplete hydrolysis during preparation of the specimen for GC/MS.
4..
Portland General Electric Company letter, dtd 9/17/90, concerning a false
. negative report of a blind performance test specimen by Laboratory Pathology..The investigation disclosed that the technician tr_ansposed~
the last 2 digits of the sample number and another aliquot was selected; for confirmation testing. Also, the laboratory failed to determine why.
the GC/MS response was zero after the initial presumptive positive screen.
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'Aq October 23, 1990
'i Dr. Donne Bush 2-Should you have any questions, please call me at 492-0944.
Sincerely, Loren L.' Bush, Chief Program Development and Review Section Office of Nuclear Reactor Regulation
Enclosures:
As stated Distribution w/o encl.
RSGB r/f DRIS r/f-PMcKee EMcPeek mCentral! Files'e PDR LPDR Distribution w/ enclosure:
L. Bush Laboratory Error file (LA file room)'
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DATE :/cp /22/90
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Document Name:
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