ML20082N613
| ML20082N613 | |
| Person / Time | |
|---|---|
| Site: | U.S. Geological Survey |
| Issue date: | 08/30/1991 |
| From: | Kocher C DOW CHEMICAL CO. |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 9109100002 | |
| Download: ML20082N613 (1) | |
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'the analog samm<apable safety channel of the Dow 'IRIO A Rawnrsh Reestor was found to be not l
opeasting during opusdon of the reacn. 'nds event is a violadon of the Tw.hrleal Spaincadons, wMme j
There shall be a minimum of one scram ckpable analog safety channel (operating when the reactor is operedng);and There shall be a minimum of two scram capable safety channels operndng wlan tid reactor is CPsenting.
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- During this event one independent scram <spable safety channel (digital) wu operating.
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h The rescu was shut down and secured as soon as the malfunctbn wm nodced (during a powmup w.
The loss of the safoty c.hannel was caused by a broken connection in the high voltage catic for the neutron deseew.
- A detailed caplanadon will be sent separately.
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