ENS 43828

v t e ENS Event
21:50 Dec 6, 2007
Title	Unplanned Safety System Actuation And Contamination Event
Event Description	On 12/06/2007 at 1550 [CST] the C-337 unit 5 cell 3 PGLD (process gas leak detection) head in the C-337 unit 5 cell 3 housing actuated and would not clear. Response to the alarm by operators revealed a haze above the cell indicating a UF6 release inside the cell housing. While the operators were responding to the unit 5 Cell 3 alarm, two other PGLD heads actuated in C-337 unit 5 cell 5. To stop the release both cells 3 and 5 were taken below atmospheric pressure. Investigation indicated that a UF6 release had occurred. The amount of material released has not been determined. The actuated PGLD heads are Q safety system components. At the time of the incident the cell was operating in a mode which required the system to be operational. This is being reported based on SAR 6.9 Table 1, J2 (unplanned actuation of a Q safety system) and 10 CFR 76.120 (c) (1) (i) (unplanned contamination event). The NRC Resident Inspector has been notified of this event. There was no release to the environment and no personnel contaminations reported.

ENS 43828 +/-
Where
Paducah Gaseous Diffusion Plant Paducah, Kentucky (NRC Region 2)
License number:	Gdp-1
Reporting

10 CFR 76.120(c)(1) Other Unspec Reqmnt
Time - Person (Reporting Time:+17.87 h0.745 days <br />0.106 weeks <br />0.0245 months <br />)
Opened:	Billy Wallace 15:42 Dec 7, 2007
NRC Officer:	Howie Crouch
Last Updated:	Dec 7, 2007
43828 - NRC Website
v • d • e

v t e Emergency Notification System
Paducah Gaseous Diffusion Plant with Other Unspec Reqmnt, 10 CFR 76.120(c)(1)
WEEKMONTHYEAR2013-08-02T14:32:00 [Table view]
[ENS list for Paducah Gaseous Diffusion Plant]

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