Questão 1
Questão
One method of controlling chemical concentrations is to prepare chemical batches using a table of tank level vs__________
Responda
-
chemical addition
-
pump stroke
-
steam flow
-
feedwater addition
Questão 2
Questão
Mechanical carryover can be prevented by careful boiler design and by operating the boiler within the design parameters for ______ level and firing rates
Responda
-
chemical
-
water
-
blowdown
-
impurities
Questão 3
Questão
The two most common designs of chemical feed pumps are the ________, plunger type and the electronic impulse-type
Responda
-
electric
-
electronic
-
reciprocating
-
vibrating
Questão 4
Questão
A______ feed system, this involves feeding the chemicals to the boiler system at the most efficient injection points and at a steady and continuous rate.
Responda
-
closed bypass
-
shot
-
slug
-
continuous
Questão 5
Questão
_______ is particularly harmful as it forms a very hard deposit on turbine blades.
Responda
-
carryover
-
mist
-
silica
-
phosphate
Questão 6
Questão
The cause of carryover can be divided into two broad categories, namely mechanical and
Responda
-
virtual
-
carryover
-
upset
-
chemical
Questão 7
Questão
_______ is particularly harmful as it forms a very hard deposit on turbine blades
Responda
-
carryover
-
mist
-
sillica
-
phosphate
Questão 8
Questão
control of the continuous blowdown flow is _____ adjusted by the operator
Responda
-
manually
-
automatically
-
quickly
-
slowly
Questão 9
Questão
Shot feeding involves the injection of chemicals over a relatively _______ period of time
Responda
-
long
-
intermittent
-
short
-
measured
Questão 10
Questão
With the ______ feed system, its a common practice to mix one batch of chemicals per day.
Responda
-
closed bypass
-
shot
-
slug
-
continuous
Questão 11
Questão
_______ is any solid, liquid or vaprous contaminants that leaves the boiler with the steam
Responda
-
carryover
-
blowdown
-
feedwater
-
mist