APHB

Question 1

What fuel does the main flame use?

Answer 1

diesel

Question 2

What fuel does the pilot flame use?

Answer 2

Propane

Question 3

Where is the fire and water in the APHB?

Answer 3

Fire in the tubes and water in the shell.

Question 4

What is the advantages of a fire tube boiler?

Answer 4

Portable
smaller
contains a larger volume of water for a given rating size tan a water tube boiler.

Question 5

What are the trips of the APHB?

Answer 5

Loss of fuel oil pressure.
Loss of combustion air.
loss of atomizing air.
low water level.
High steam pressure.
Loss of pilot or main flame.

Question 6

What are the 4 statuses of the APHB?

Answer 6

In service.
Stand by / Low fire hold.
Wet layup.
Shutdown.

Question 7

What are the Three positions for the feed pump control switch and what is the pumps response?

Answer 7

Auto- the pumps will continuously run.
Hand - the pumps will cycle on water level.
off - the pumps will not run.

Question 8

What are the 4 auto start phases of the APHB?

Answer 8

Safety Circuit Check Phase.
Boiler Purge Cycle Phase.
Pilot Flame Phase.
Main Flame Phase.

Question 9

What is the opacity limits for the APHB?

Answer 9

Stack discharge opacity SHALL NOT exceed a 6 minute average limit of 20%.
Except for ONE six minute average per hour of not more than 27% opacity.
This means that you SHALL NOT have black smoke exiting the stack

Question 10

What are the Three positions for the APHB burner control switch?

Answer 10

Auto - we are supplying Aux Steam.
LFH - Hot stand by.
Off