MICRON Bldg 24 PCS 5320 - TMA on CENT493 - To install fire protection safeguards on a new cabinet, containing trimethyl aluminum, on tool CENT493, in Fab Building 24, in accordance with an approved Alternate Design for TMA quantities exceeding UFC maximum allowable limits. These plans include a VESDA Laser Compact high sensitivity smoke detection panel sampling air from within the new cabinet, an explosion proof, IR/UV flame detector within the cabinet, flow monitoring of the nitrogen fire suppression agent for cabinet flooding, pressure supervision of the nitrogen supply, cabinet exhaust air flow monitoring, and a cabinet door switch interlocked to disable all chemical delivery valves. The existing building FA system will power and monitor the UV/IR smoke detector, monitor the Vesda smoke detection system for alarm and trouble, release the nitrogen suppression agent and disable chemical gas valves in event of UV/IR flame detection, supervise the nitrogen supply pressure, monitor the tool power supply and release the nitrogen in event of an emergency power off condition. The exhaust airflow switch will be monitored for alarm and trouble at the constantly attended central control room.
There is no associated building permit.