ENS 41354: Difference between revisions
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| event date = 01/24/2005 16:10 EST | | event date = 01/24/2005 16:10 EST | ||
| last update date = 01/24/2005 | | last update date = 01/24/2005 | ||
| title = Unusual Event Due | | title = Unusual Event Due to Unidentified Leakage Greater than 10 Gpm | ||
| event text = The licensee reported that it had indications of unidentified reactor coolant leakage greater than 10 gpm which placed the licensee into an unusual event emergency action level (EAL). Indication of drywell sump level increase and pump out rate gave an approximate leak rate of 30 gpm. The licensee also indicated that drywell pressure was above the normal range. The unusual event declaration was made at 1610 EST. | | event text = The licensee reported that it had indications of unidentified reactor coolant leakage greater than 10 gpm which placed the licensee into an unusual event emergency action level (EAL). Indication of drywell sump level increase and pump out rate gave an approximate leak rate of 30 gpm. The licensee also indicated that drywell pressure was above the normal range. The unusual event declaration was made at 1610 EST. | ||
At 1619 EST, the licensee manually scrammed the reactor. The scram was uncomplicated with all rods fully inserting and all systems functioning as required. Decay heat is being rejected to the main condenser. There has been no ECCS injection actuation and reactor water level is being maintained by feed pumps. The licensee has no significant safety related equipment out of service. | At 1619 EST, the licensee manually scrammed the reactor. The scram was uncomplicated with all rods fully inserting and all systems functioning as required. Decay heat is being rejected to the main condenser. There has been no ECCS injection actuation and reactor water level is being maintained by feed pumps. The licensee has no significant safety related equipment out of service. | ||
Latest revision as of 22:21, 1 March 2018
| Where | |
|---|---|
Fermi  Michigan (NRC Region 3) | |
| Reporting | |
| Emergency class: | Alert |
| 10 CFR 50.72(a) (1) (i), Emergency Class Declaration 10 CFR 50.72(b)(2)(iv)(B), RPS Actuation | |
| LER: | 05000341/LER-2005-001 |
| Time - Person (Reporting Time:+-4.7 h-0.196 days <br />-0.028 weeks <br />-0.00644 months <br />) | |
| Opened: | Phil Skorbek 16:28 Jan 24, 2005 |
| NRC Officer: | Bill Huffman |
| Last Updated: | Jan 24, 2005 |
| 41354 - NRC Website
| |
Fermi with 10 CFR 50.72(b)(2)(iv)(B), RPS System Actuation, 10 CFR 50.72(a)(1)(i), Emergency Class Declaration | |