All,
SONGS U2 recently shutdown for a refueling
outage (1st refueling outage post SGRP) and has experienced a much larger
than nomal crudburst than expected (8.1 uci/ml Co-58 vs. 2-3 uci/ml Co-58)
and is approaching our RCS drain down window. With this elevated source
term we are looking to increase our vigilance in engineering controls.
Is there anyone who has experienced
this same phenomenon and has effectively implemented the use of containment
devices/enclosures (e.g. glove bags, boxes, tents, etc.) and other engineering
controls for Primary SG work, valve maintenance, etc. and would be willing
to share how they implemented these controls, including suppliers.
Any and all information is welcome!
Larry Pepple
Emergent Issues Response Team Leader
SONGS
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