Job Description:

• 1) Operates battery of stationary or rotary steam digesters to cook wood chips with soda ash or acid to make pulp for use in manufacture of paper and insulation board: Signals DIGESTER-OPERATOR HELPER to charge digesters with specified amounts of chips and chemicals.

• 2) Turns valves or moves panel controls to admit steam into digesters, to raise temperature and pressure within specified limits, and to start rotary digesters.

• 3) Monitors temperature, flow, and pressure gauges and charts to ensure that chips are cooked according to specifications.

• 4) Tests samples of digester liquid by titration or standard color chart to determine completion of cooking process.

• 5) Opens valves of stationary digester to blow cooked pulp into pit, or pulls lever to tip rotary digester and dump contents.

• 6) Compiles production records.

• 7) May be designated according to process as Cooker, Soda; Cooker, Sulfate; Cooker, Sulfite.