ML19338E058
| ML19338E058 | |
| Person / Time | |
|---|---|
| Site: | McGuire, Mcguire  |
| Issue date: | 09/17/1980 |
| From: | Parker W DUKE POWER CO. |
| To: | Harold Denton, Youngblood B Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8009240409 | |
| Download: ML19338E058 (2) | |
Text
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DUKE POWEE COMPANY Powen Bcuanxo 42a Sourn Cnuncu SrazzT, CuantoTTz, N. C. 28a4a wi wa o. **a n c a. s a.
September 17, 1980 V8CE PotsiotwT TritP=CNE: A#t A 704 Sita= PacowCrion 373-4083 Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Washington, D. C.
20555 i
Attention:
Mr. B. J. Youngblood, Chief Licensing Projects Branch No. 1
Dear Mr. Denton:
Mr. R. L. Tedesco's letter of July 31, 1980 stated the NRC position relative to the McGuire Nuclear Station in-core thermocouples. This position is as follows:
We require that the McGuire in-core thermocouple readout have the following capability:
l' l.
Ability for complete thermocouple mapping printout within l
5-6 minutes or less; l
2.
Readout and printout capability should exist above 700 l
degrees Fahrenheit (thermocouples are capable of measuring in the 2000 degree Fahrenheit range).
The McGuire Operator Aid Computer (OAC) reads each of the sixty-five in-core thermocouples six times each minute. These six readings are averaged to generate a one-minute average value of each in-core thermocouple.
A map of these in-core thermocouple values can be displayed on the control room CRT, and printout can be available within five minutes. Each in-core thermocouple 2
value used in the map is updated every ten minutes. Thus, every ten minutes a new one-minute average value of each in-core thermocouple is available for mapping.
1 In addition, a separate OAC program can pr. vide the operator with a tabular print-I out of any one-minute average value of each thermocouple. This printout can be 90 9 A
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-Mr. Harold R. Denton, Director September. 17,.1980 Page Two available in less than five minutes. As_soon as one printout is complete the program can provide a printout of a subsequent one-minute average value of each thermocouple.
Maximum in-core thermocouple values (23000F) can be displayed on the CRT or on a printout.
Ve truly yours,
+
M.. e
. b wuuamo.'earuer,ar.d THH:ses I
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