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