ML20135F363
| ML20135F363 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 09/13/1985 |
| From: | Enos J ARKANSAS POWER & LIGHT CO. |
| To: | Butcher E, Stolz J Office of Nuclear Reactor Regulation |
| References | |
| RTR-NUREG-0737, RTR-NUREG-737, TASK-2.B.3, TASK-TM 0CAN098501, CAN98501, NUDOCS 8509170236 | |
| Download: ML20135F363 (2) | |
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ARKANSAS POWER & LIGHT COMPANY POST OFFICE BOX 551 LITTLE ROCK. ARKANSAS 72203 (501)3714000 September 13, 1985 0CAN098502 Director of Nuclear Reactor Regulation ATTN:
Mr. J. F. Stolz, Chief Operating Reactors Branch #4 Division of Licensing U. S. Nuclear Regulatory Commission Washington, DC 20555 Director of Nuclear Reactor Regulation ATTN: Mr. Edward J. Butcher, Acting Chief Operating Reactors Branch #3 Division of Licensing U. S. Nuclear Regulatory Commission Washington, DC 20555
SUBJECT:
Arkansas Nuclear One - Units 1 & 2 Docket Nos. 50-313 and 50-368 License Nos. DPR-51 and NPF-6 Post Accident Sampling System, NUREG 0737 Item II.B.3 Gentlemen:
In a conference call on May 7,1985 between Ms. Margaret Snow of AP&L and Mr. Jim Wing of the NRC, AP&L was requested to provide information pertaining to the accuracy of the manual boron and chloride sampling methods to be used for post accident sampling at Arkansas Nuclear One.
In a "0CAN078510, Responds to 850507 Request for Info Re Accuracy of Manual Boron & Chloride Sampling Methods Used for post-accident Sampling Per TMI Item II.B.3.Post-accident [[Atomic Element" contains a listed "[" character as part of the property label and has therefore been classified as invalid. Sampling Method Meets NRC Guidelines|letter dated July 15, 1985]] (0CAN078510) AP&L provided the accuracy of the boron sampling method ard committed to provide the accuracy of the chloride sampling method cpon the receipt of information from Oak Ridge National Laboratories.
Oak Ridge National Laboratories have now responded to our request for information on the chloride analysis to be performed in the case of an accident at Arkaasas Nuclear One. Oak Ridge has stated that they experience a better than 10% accuracy at the 10 ppm chloride concentration level.
The analysis technique that would be used is ion chromatography, which has a chloride detection lower limit of less than 0.5 ppm.
The back-up method of spark source mass spectrometry has a lower detection limit of less than 0.1 ppm.
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From the above informatian it can be seen that the chloride analysis methods used by Oak Ridge National Laboratories should meet the NRC guidelines for chloride analysis of 110% accuracy between 0.5 and 20 ppm chloride and i0.05 ppm below 0.5 ppm chloride.
Very t uly yours,
/
r J. Ted Enos Manager, Licensin9 JTE/MCS/sg