Alcator C-Mod Sump Manned Entry Procedure

Version #1, 08/18/03

Authors: Irby/Fiore/Vieira/Dekow

This procedure covers work in the Alcator C-Mod sump that requires manned access. The following steps must be completed before any person enters the sump:

1) a confined space form must be filled out and signed by the supervisor before work can proceed;

2) the cryostat, LN2 feedline, and coil GN2 purge lines must all be closed and locked out;

3) a 6" vent line should be used to supply air from a blower to the bottom of the sump;

4) the sump should not be entered until the oxygen detector shows allowable levels in the sump.