ML19209B721
| ML19209B721 | |
| Person / Time | |
|---|---|
| Site: | Waterford  |
| Issue date: | 09/28/1979 |
| From: | Aswell D LOUISIANA POWER & LIGHT CO. |
| To: | Seyfrit K NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| References | |
| DEFR-790928, LPL-12062, NUDOCS 7910100356 | |
| Download: ML19209B721 (1) | |
Text
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I 0UISIANA P O W E A & L i G H T! P O BCX 60C0 = New CALeANS. LOUISlANA 70174 242 ceuac~as sraser
- (5041 368-2345 Entana September 28, 1979 3
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3-LPL 12062 Q-3-A35.02.01 Mr. K.V. Seyfrit, Director U.S. Nuclear Regulatory Commission Office of Inspection & Enforcemant Region IV 611 Ryan Plaza Drive Suite 1000 Arlington, Texas 76012 SJBJECT: Waterford SES Unit 3 Docket No. 50-382 Potentially Reportable Incident No. 21
" Pressure Transmitter Lift-Off Voltage"
Dear Mr. Seyfrit:
The subject deficiency describes a lif toff-voltage problem for Rosemount 1153A transmitters.
The device will not start up for certain combinations of g.: supply voltage, zero suppression, ambient temperature, etc.
In Waterford SES Unit No. 3 applications, the voltage provided to the current loop of the transmitter is 40 volts dc.
Since the liftoff-voltage problem does not occur if the power supply voltage exceeds 30 volts, we do not believe that this failure is a reportable deficiency under 10CFR50.55e.
Yours very truly, D.L. Aswell DLA/TFG/ys cc: Director Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission ll}J C
Fg 3
Washington, D.C.
Dire. tor Office of Management Information and Program Control b
U.S. Nu: lear Regulatory Commission k
Washington, D.C.
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