Document n9nLgKMm0OQYQrZ2K6OX8K6V8

UNION CARBIDE CORPORATION CHEMICALS AND PLASTICS P.O; COX 1551. BROWNSVILLE, TEXAS 78520 GUIDELINES FOR ACCESS TO 4th and 5th LEVELS BLDG 539 TEMPERATURE GREATER THAN l40F No access allowed. TEMPERATURE BETWEEN 110F and l40F Hole vatch is required to stay on third level. Work is allowed for 15 minutes at a time only. After 15 minutes, workers are to return to the 3rd level to cool off Before returning to work for another 15 minutes, and so on. TEMPERATURE LESS THAN 110 F No time 'limit on work. No hole vatch required on 3rd level. Operator must recheck temperature every two hours work is in progress and for each new entry. SRL: 2/77 3RE 0310