ML18043A988
| ML18043A988 | |
| Person / Time | |
|---|---|
| Site: | Palisades  |
| Issue date: | 08/02/1979 |
| From: | Bixel D CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| NUDOCS 7909040326 | |
| Download: ML18043A988 (1) | |
Text
consumers Power*
company General Offices: 212 West Michigan Avenue, Jackson, Michigan 49201
- Area Code 517 788-0550 August 2, 19T9 Mr James G Keppler Office of Inspection & Enforcement Region III US Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 60137 DOCKET.-,?.Q.=~- LICENSE DPR PALISADES P T - IE BULLETINS79-05C &
79-06C JULY 26, 1976 SUPPLEMENT Consumers Power Company has reviewed the short-term action Item 1 in reference Bulletin and has instituted the action suggested at our Palisades Plant.
How-ever, to avoid any misunderstanding we wish to make you aware of our under-standing of your request.
The interim action suggested for reactor coolant pump (RCP) trip will be initiated when high-pressure safety injection (HPSI) flow begins (at a primary coolant pressure of~ 1250 psig).
The Safety Injection Actuation Signal occurs at a primary coolant pressure of ~ 1650 psig; however, we have concluded that to trip the reactor coolant pumps (RCPs) at this time would result in a nonpreferred mode of operation when a LOCA has not actually occurred.
In fact, we have experienced several instances of HPSI actuation on low primary coolant system pressure resulting from secondary plant transients.
Tripping the primary coolant pumps during these instances would have forced the plant unnecessarily into a natural circulation *mode.
David A Bixel (Signed)
David A Bixel Nuclear Licensing Administrator 7 909 0 403?b AUG