ML20010G195

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Forwards Description of Heated Junction Thermocouple (Hjtc) Sys Under Consideration for Use at Prairie Island Nuclear Generating Plant to Aid in Detection of Inadequate Core Cooling, in Response to NUREG-0737,Item II.F.2
ML20010G195
Person / Time
Site: Prairie Island  Xcel Energy icon.png
Issue date: 09/01/1981
From: Mayer L
NORTHERN STATES POWER CO.
To:
Office of Nuclear Reactor Regulation
Shared Package
ML20010G196 List:
References
RTR-NUREG-0737, RTR-NUREG-737, TASK-2.F.2, TASK-TM NUDOCS 8109150425
Download: ML20010G195 (1)


Text

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W Northem States Power Company 414 NacoHet Ma#

Mmeacons. Mmesota 55401 Tewonone (612) 330-550o September 1, 1981 to O A Director of Nuclear Reactor Regulation U S Nuclear Regulatory Commission Washington, DC 20555 Eq SEP 1,41981 > 9 w a,samaana ass u osa b PRAIRIE ISLAND NUCLEAR GENERATING PLANT 8D'**

  • M P Docket Nos. 50-282 License Nos. DPR-42 ,

50-306 DPR-60 g Instrumentation for Detection of Inadequate Core Cooling Our letter dated July 6,1981 contained our commitment to submit for NRC review a description of the reactor 'essel level detection instrumentation system being investigated for use at the Prairie Island Nuclear Generating Plant. Other instrumentation being installed to satisfy NUREG-0737, Item II.F.2, "Instrumenta-tion for Detection of Inadequate Core Cooling," was described in our letters dated November 20, 1980 and December 30, 1980.

As stated in our July 6, 1981 letter we are investigating the Combustion Engineer-ins Heated Junction Thermocouple (HJTC) System for use in both Prairie Island Units. This investigation is being conducted with a number of other utilities interested in installing the HJTC System in Westinghouse units. Infcr=ation satisfying the reqirements of NUREG-0737, Item II.F.2, " Documentation Required",

is not yet available. Information which is available to us at this time is provided in the attached report.

Please contact us if you have any questions concerning this information.

L 0 Mayer, PE Manager of Nuclear Support Services LOM/DMM/jh cc J G Kappler NRC Resident Inspector G Charnoff Attachment 8109150425 810901 n v

PDR ADOCK 05000282 P PDR ,

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