Exam (elaborations)
Boiler Exam Study Guide 2 – Questions / Answers
Boiler Exam Study Guide 2 – Questions / Answers
[Show more]
Content preview
Boiler Exam Study Guide 2 – Questions / AnswersRemoves sludge and sediment from the mud drum ✔️Ans - The bottom
blowdown on a boiler ___.
Outside diameter ✔️Ans - Boiler tubes are sized using the ___.
Tin ✔️Ans - A boiler fusible plug is brass or bronze with a core of ___.
Hairline cracks in the refractory ✔️Ans - Spalling in a boiler refers to ___.
34.5 ✔️Ans - Boiler horsepower is the evaporation of ___ lb of water/hr
from and at a feedwater temperature of 212°F.
Steam temperature ✔️Ans - A siphon installed between the boiler and the
pressure gauge protects the Bourdon tube from___.
10 to 11.5 ✔️Ans - The pH of the boiler water should be ___.
Steam leaving the boiler ✔️Ans - The boiler superheater raises the
temperature of the ___.
Feedwater ✔️Ans - An economizer is used to preheat ___.
Oily waste rags ✔️Ans - Fires caused by spontaneous combustion would
probably start in the ___.
Dirty strainers ✔️Ans - A high suction reading on the fuel oil pressure
gauge indicates ___.
Try cock ✔️Ans - The ___ is a secondary means of determining boiler water
level.
Pyrometer ✔️Ans - A(n) ___ is used to measure furnace temperature.
1 ½ ✔️Ans - The range of a boiler pressure gauge must not be less than ___
times the safety valve setting.
,prevent formation of scale ✔️Ans - Boiler feedwater is chemically treated
to ___.
deadweight tester ✔️Ans - Pressure gauges are calibrated with a(n) ___.
inside tube surface ✔️Ans - In a firetube boiler, soot settles on the ___.
complete ✔️Ans - Carbon dioxide in the flue gas is a sign of ___ combustion.
incomplete ✔️Ans - Carbon monoxide in the flue gas is a sign of ___
combustion.
Globe ✔️Ans - ___ valves should be used for throttling service.
a dirty heating surface ✔️Ans - A gradual increase in chimney temperature
indicates ___.
1 ½ ✔️Ans - The pressure applied on the boiler during a hydrostatic test is
___ times the MAWP.
6 ✔️Ans - Boiler safety valve capacity must be such that the steam pressure
can never go higher than ___% above the MAWP.
decreased ✔️Ans - As fuel oil is heated, its viscosity is ___.
6 ✔️Ans - No. ___ fuel oil has the highest Btu content per gallon.
T ✔️Ans - T/F All steam boilers must have one or more safety valves.
T ✔️Ans - T/F An open feedwater heater vents gases to the atmosphere.
F ✔️Ans - T/F A hydrostatic test will determine whether a steam boiler has
sufficient relieving capacity.
T ✔️Ans - T/F When boilers are set in battery, the main steam stop valves,
bottom blowdown valves, and feedwater valves should be locked closed
before anyone enters the boiler drums.
, F ✔️Ans - T/F Open and closed feedwater heaters are never used at the
same time.
T ✔️Ans - T/F In an open feedwater heater, the water and steam come into
direct contact; in a closed feedwater heater, the water and steam are
separated.
T ✔️Ans - T/F An economizer is a fuel-saving device that reclaims heat
from the gases of combustion.
F ✔️Ans - T/F Soot accumulation on the tubes of a watertube boiler does
not affect the efficiency of the boiler.
F ✔️Ans - T/F Scale protects the boiler heating surfaces.
F ✔️Ans - T/F Boiler corrosion cannot be prevented as long as water is in
contact with metal.
T ✔️Ans - T/F To prevent water hammer, water should be drained out of
all high pressure steam lines
T ✔️Ans - T/F Dry saturated steam is in a gaseous state.
F ✔️Ans - T/F Pressure on water does not change the boiling point of the
water.
F ✔️Ans - T/F The stop valve in a boiler feedwater line should have the
pump discharge pressure on the top of the valve disc when the valve is closed.
T ✔️Ans - T/F According to the ASME Code, weighted lever safety valves
cannot be used on boilers.
F ✔️Ans - T/F The interior of the Bourdon tube in a steam pressure gauge
is always filled with live steam when it is operating.
T ✔️Ans - T/F Safety valves on superheaters should be set to open before
main safety valves on boilers.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller LeCrae. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for CA$26.56. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
77764 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now