ML19270G647
| ML19270G647 | |
| Person / Time | |
|---|---|
| Site: | Hatch  |
| Issue date: | 05/25/1979 |
| From: | Manry M GEORGIA POWER CO. |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| NUDOCS 7906140355 | |
| Download: ML19270G647 (1) | |
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79 MAY 25 93 58 PMS Hit. JAlilS P. O'kE]LLY UNilLD STA105 HilCLEAR REGilLM([(tY C009tlSS10H I11RLC10R Of lif5PECT10H AND INTORCEMLH1 RtG10H 11
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HAICH IfMIT 2. DOCKET NO. 50 36G, M011t lCA110N Of Rfp0RTA0l E OCClikRINCE HO. 50-365/1979-40 NOT ITICII: Ross T. Rogers DATE: 5-?S-79 TIME: 11:00 AN EDT DL$tillPTION OF IIEPORTABLt OCCURRENCE While in cold shutdown an inspection of the piping for the feedwater flow transmitters revealed that:the sensing lines werv incorrectly piped up.
The flw nozzles have 2 sets of taps each of which has a high side ~ind low side sensing line for the purpose of tacasuring dif ferential pressure ac-rtist the f1w nozzle.
TeerMafer f1w is determined using the flw nor-rie charetteristics and the ceasured dif fert ntia) pressure. The normal.
arrangenent is to pipe up to the high and low side sensing lines on either tap set 1 or tap set 2.
In actuality one high side line on tap set 1 and one Irw side on tap set 2 were used. With this piping arrangement feedwater flow ano reactor power as calculated by the process conputer cannot be guaranteed due to lack of correlation data of flow versus dif-ferential prvssure for this configuration. The piping arrangevent will te changed prior to startup to correct the error.
There wert no personnel overexposures or injuries and no releases of radioactive materials as a result of this occurrence.
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