Chapter - 1-19 Flashcards
The component in which liquid vapor by absorbing heat is called?
Condenser
Compressor
Expansion valve
Evaporator
Evaporator
Select best answer electrical grounding methods?
Metal stake drive 8 foot into ground
A_________valve should be used for throttling purpose?
Glove
Ball
Gate
Check
Glove valve
What is the acceptable range for residual sodium sulfite in the boiler maintain?
15-30
20-40
30-70
40-80
30-70
What is the BTU content of a gallon of #4?
142,000
148,000
146,000
150,000
146,000
What does a zeolite water softener system use as a means of regeneration?
Salt
Hot water
Cold water
Brine
Brine
What are the 4 steps for zeolite rejuvenation water softener process?
Back wash,
Bring slow rinse
Fast rinse
Brine tank refill/service
Backwash, brine, rinse, service
Where is medium temperature is liquid found?
Condenser
Where is high temperature vapor found?
At the discharge of the compressor or condenser
What stays are used to support the burner chamber in a scotch marine boiler
Grinder stay
Diagonal stays
Through stays
Palm stay
Diagonal stays
Name the wire that connects all components of a system to a physical ground or water pipe
Grounding electrodes conductor
Where do you get superheat readings
??
Where do you get sub-cooling readings
??
On the boilers that have both quick opening and screw type blow down valves, the quick opening valve must be located?
Closest to the boiler followed by the screw type valve
High pressure boilers equipped with quick opening and screw type valves are blown down how?
By opening the quick valve first and closing it last
ASME code defines a slow opening valve as what?
One requiring at least 5 full 360 degree turns between full open and close position
During a 24 hours operation how often should you check the water level?
Once per shift
How often you checking the high limit switch?
Annually
What is the recommended time for a complete external inspection of a boiler?
Once per shift
