3.10 internal water treatment for boilers

Description

Quiz on 3.10 internal water treatment for boilers, created by TRAVIS CANNING on 29/01/2016.
TRAVIS CANNING
Quiz by TRAVIS CANNING, updated more than 1 year ago
TRAVIS CANNING
Created by TRAVIS CANNING about 8 years ago
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Resource summary

Question 1

Question
One method of controlling chemical concentrations is to prepare chemical batches using a table of tank level vs__________
Answer
  • chemical addition
  • pump stroke
  • steam flow
  • feedwater addition

Question 2

Question
Mechanical carryover can be prevented by careful boiler design and by operating the boiler within the design parameters for ______ level and firing rates
Answer
  • chemical
  • water
  • blowdown
  • impurities

Question 3

Question
The two most common designs of chemical feed pumps are the ________, plunger type and the electronic impulse-type
Answer
  • electric
  • electronic
  • reciprocating
  • vibrating

Question 4

Question
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.
Answer
  • closed bypass
  • shot
  • slug
  • continuous

Question 5

Question
_______ is particularly harmful as it forms a very hard deposit on turbine blades.
Answer
  • carryover
  • mist
  • silica
  • phosphate

Question 6

Question
The cause of carryover can be divided into two broad categories, namely mechanical and
Answer
  • virtual
  • carryover
  • upset
  • chemical

Question 7

Question
_______ is particularly harmful as it forms a very hard deposit on turbine blades
Answer
  • carryover
  • mist
  • sillica
  • phosphate

Question 8

Question
control of the continuous blowdown flow is _____ adjusted by the operator
Answer
  • manually
  • automatically
  • quickly
  • slowly

Question 9

Question
Shot feeding involves the injection of chemicals over a relatively _______ period of time
Answer
  • long
  • intermittent
  • short
  • measured

Question 10

Question
With the ______ feed system, its a common practice to mix one batch of chemicals per day.
Answer
  • closed bypass
  • shot
  • slug
  • continuous

Question 11

Question
_______ is any solid, liquid or vaprous contaminants that leaves the boiler with the steam
Answer
  • carryover
  • blowdown
  • feedwater
  • mist
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