ML20009C193
| ML20009C193 | |
| Person / Time | |
|---|---|
| Site: | Fermi  |
| Issue date: | 07/16/1981 |
| From: | Colbert W DETROIT EDISON CO. |
| To: | Kintner L Office of Nuclear Reactor Regulation |
| References | |
| EF2-54092, NUDOCS 8107200364 | |
| Download: ML20009C193 (2) | |
Text
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July 16, 1981 EF2 - 54092 Mr. L.
L.
Kintner U.
S. Nuclear Regulatory Commission Division of Project Management Office of Nuclear Reactor Regulation 7920 Norfolk Avenue Bethesda, Maryland 20014
Dear Mr. Kintner:
Reference:
Enrico Fermi Atomic Power Plant, Unit 2 NRC Docket No. 50-3C
Subject:
Response to NRC Request for Additional Information on Post Turbine Trip Reheater Steam Flow The purpose of this letter is to provide supplemental materials requested by the NRC Staff (C. Graves).
ITEM 1 For the turbine / generator trip transient with postulated failure of the bypass flow to the condenser (26% of rated steam flow) the MCPR occurs at 1.44 seconds.
ITEM 2 Two sets of drawings depicting the piping isometrics of the reheater steam flow system are enclosed.
Sincerely, 4
./
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William F. Colbert Technical Director Enrico Fermi 2 g
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WFC/MKD/dk Enclosure g
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A ADOCK 05000341 P@D J
DRAWING NO.
TITLE 6M721 - 3192-1 HTR No. SS Drains to flash tanc and condenser 6M721 - 3193-1 East separator drains to heater No. SS and to separator seal tank 6M721 - 3194-1 Emergency drain from heater SN to condenser 6M721 - 3195-1 West separator drains to heater No. 5N and to separator seal tank.
6M721 - 3196-1 Extraction steam from turbine to L.
P.
heater No. 5 6M721 - 3201-1 High pressure turbine extraction steam to N & S heater No. 5 and hot drips from HP turbine 6M721 - 3202-1 West reheater drains to reheater seal tank 6M721 - 3203-1 East reheater drains to reheater seal tank 6M721 - 3203-2 East reheater draias to reheater seal tank 6M721 - 3206-1 Condensate drains from reheater seal tank to rehater No. 6N and 6S 6M721 - 3207-1 Pehater seal tank drains to condenser and to reheater No. 6N and 6S 6M721 - 3210-1 F.
W.
heater No. 6N drains to L.
P.
heater No. SN 6M721 - 3216-1 Drains from heater No. 6S to heater No. 5-S and condenser 6M721 - 3216-2 Drains from heater no. 6S to heater No. 5-S and condenser 6M721 - 3258-2 Main steam from heater to turbine manifold 6M721 - 3259-1 52" Main steam manifold pipin.g in Turbine Building R.
5030A5890 Controlled live steam pipe work (Sheets 1 - 3) to reheaters R.
5030A5818 Arrangement and details of auxiliary steam pipe work l