Study Guide Questions (LA Steam Engineer License Exam)
Study online at https://quizlet.com/_9uf26g
1. What are the pre- Make a physical observation of the boiler and its systems, walk around the
cautions to be ob- boilerto check for any abnormal conditions such as flammable material at the
served when start- dampers, fuel leaks,damaged electrical conduits, etc. Check all boiler systems
ing any boiler that (feedwater, fuel, etc). Very important issue in starting a gas firing boiler is a
has been closed dow furnace prepurge. It is never has to be altered or bypassed.
overnight? Are there
any special precau-
tions required start-
ing a gas burning
boiler?
2. How do you deter- Check the temperature differential at the check valve when feedwater pump is
mine whether feed- not in operation.
water check valve
for the boiler is not
closing?
3. What causes foam- High TDS, organic matter and oil in the boiler cases foaming. If the water
ing in the boil- level in the gage glass fluctuates, the most probable cause of thisis foaming.
er? How would you We reduce amount of TDS by continuous and bottom blowdowns;we use
know when a boiler anti-foaming chemicals to prevent foaming.
is foaming? How do
you stop foaming in
a boiler?
4. What is boiler prim- When the liquid water from the boiler drum gets to the steam lines it called
ing? What causes priming. Priming can be caused by boiler drum level excessively high, by
priming? How can foaming, sudden pressure drop,and firing ratebeing to high. Priming causes
priming in a boiler water hammer that could destroy or shorten the life expectancy of a load
damage an engine (mechanical damage)
or pump?
1/5
, Study Guide Questions (LA Steam Engineer License Exam)
Study online at https://quizlet.com/_9uf26g
5. What would you Most likely pressure gage failed. In order to get such excessive pressure both
do if the pressure operating and high pressure limit controls have to fail also, plus the safety
gauge on the boil- valve. Also, if the boiler was over pressurized to such extent, it would give some
er registers 150 psi indications such as excessive vibration and abnormal sounds.Pressure gage
and you knew that can be quickly isolated and changed.
the safety valve was
set to open at 100
psi?
6. How do you test Pressure valves can be tested hydrostatically (boiler filled up with water pres-
a safety valve to sure).Safety valves open instantaneously and relief valves do not open fully
see if it operates at with a set pressure.Safety valves are tested manually once a month and pres-
the proper set pres- sure tested once a year.Safety valves can be only repaired by a manufacturer
sure? What is the dif- or an authorized company.
ference between a
safety valve and a re-
lief valve? How of-
ten do you test these
valves? How is leak-
ing safety valve re-
paired?
7. What causes heavy Most likely it is incomplete combustion caused by either improper air/fuel
black smoke from ratio or dirty burners.
the firebox of an
oil-burning boiler?
8. What does heavy It is most likely a good combustion of #6 oil.It typically gives yellow or brownish
yellow smoke from haze from the stack.
the firebox of an
oil-burning boiler in-
dicates?
2/5
Study online at https://quizlet.com/_9uf26g
1. What are the pre- Make a physical observation of the boiler and its systems, walk around the
cautions to be ob- boilerto check for any abnormal conditions such as flammable material at the
served when start- dampers, fuel leaks,damaged electrical conduits, etc. Check all boiler systems
ing any boiler that (feedwater, fuel, etc). Very important issue in starting a gas firing boiler is a
has been closed dow furnace prepurge. It is never has to be altered or bypassed.
overnight? Are there
any special precau-
tions required start-
ing a gas burning
boiler?
2. How do you deter- Check the temperature differential at the check valve when feedwater pump is
mine whether feed- not in operation.
water check valve
for the boiler is not
closing?
3. What causes foam- High TDS, organic matter and oil in the boiler cases foaming. If the water
ing in the boil- level in the gage glass fluctuates, the most probable cause of thisis foaming.
er? How would you We reduce amount of TDS by continuous and bottom blowdowns;we use
know when a boiler anti-foaming chemicals to prevent foaming.
is foaming? How do
you stop foaming in
a boiler?
4. What is boiler prim- When the liquid water from the boiler drum gets to the steam lines it called
ing? What causes priming. Priming can be caused by boiler drum level excessively high, by
priming? How can foaming, sudden pressure drop,and firing ratebeing to high. Priming causes
priming in a boiler water hammer that could destroy or shorten the life expectancy of a load
damage an engine (mechanical damage)
or pump?
1/5
, Study Guide Questions (LA Steam Engineer License Exam)
Study online at https://quizlet.com/_9uf26g
5. What would you Most likely pressure gage failed. In order to get such excessive pressure both
do if the pressure operating and high pressure limit controls have to fail also, plus the safety
gauge on the boil- valve. Also, if the boiler was over pressurized to such extent, it would give some
er registers 150 psi indications such as excessive vibration and abnormal sounds.Pressure gage
and you knew that can be quickly isolated and changed.
the safety valve was
set to open at 100
psi?
6. How do you test Pressure valves can be tested hydrostatically (boiler filled up with water pres-
a safety valve to sure).Safety valves open instantaneously and relief valves do not open fully
see if it operates at with a set pressure.Safety valves are tested manually once a month and pres-
the proper set pres- sure tested once a year.Safety valves can be only repaired by a manufacturer
sure? What is the dif- or an authorized company.
ference between a
safety valve and a re-
lief valve? How of-
ten do you test these
valves? How is leak-
ing safety valve re-
paired?
7. What causes heavy Most likely it is incomplete combustion caused by either improper air/fuel
black smoke from ratio or dirty burners.
the firebox of an
oil-burning boiler?
8. What does heavy It is most likely a good combustion of #6 oil.It typically gives yellow or brownish
yellow smoke from haze from the stack.
the firebox of an
oil-burning boiler in-
dicates?
2/5
