CHEMICAL FEED SYSTEM

Question 1

_____________________ is applied by the Chemical Feed System and used as a biocide in conjunction with bleach in the cooling towers. (Ref: 2.2 CF SD)

Answer 1

Sanibrom

Question 2

The sulfuric acid chemical feed skid pumps are automatically controlled to maintain a ______________ setpoint. (Ref: 2.4.2 CF SD)

Answer 2

pH

Question 3

__________________ uses a fluorescent tracer dye to monitor the concentration in the cooling tower. The tracer dye is measured by a little dipper probe to maintain the proper inhibitor concentration. (Ref: 2.4.2 CF SD)

Answer 3

Aqua Serv 4933AD

Question 4

Nalco 8735 is used to raise the pH of the boiler water to between _______________ and alkalinity above 100 ppm. (Ref: 2.5.2 CF SD)

Answer 4

10.5 and 12.0 pH

Question 5

The feed rate for chemicals applied to the deaerator storage tanks and the main steam header is controlled __________________. (Ref: 4.1 CF SD)

Answer 5

manual pump adjustments based on chemical testing