#11 Marine Auxiliary Boiler

Question 1

Main Feed Check Valve

Answer 1

Connected to main feed water pipe line from feed pumps
screw-down non-return type of valve
operated by feed water
regulate the amount of water fed into the boiler

Question 2

Water Level Guage

Answer 2

Situated on either side of the boiler
Indicates the water level in the boiler

Question 3

Safety valves

Answer 3

lifts at a pressure above the maximum working pressure
pre-set and locked
ensure boiler safety by releasing steam by lifting off when there is an abnormal rise in pressure

Question 4

Main Steam Stop Valves

Answer 4

Connected to main steam pipeline (carries steam to various distribution lines)
isolate the boiler from main steam line

Question 5

Air Valves

Answer 5

Highest point of boiler
opened to allows air to escape when raising steam from cold

Question 6

Pressure guage with valve

Answer 6

connected to steam space

Question 7

Scum Valve

Answer 7

accumulate foreign matter which floats on the water
skimmed off by blowing top layer of water out of boiler

Question 8

Salinometer valve

Answer 8

fitted in the water space through
a sample of boiler water can be drawn off for testing

Question 9

Blowdown valve

Answer 9

bottom of boiler
connected by a pipe to blowdown valve on the ship’s side
opened to empty boiler in port prior to opening up for cleaning and inspection