Chpater 95- Hot Water& Steam Heating Boiler Operation

Question 1

Before starting up a new boiler or one that has been out of service the following must be ensured

Answer 1

The boiler has a valid inspection certificate

Question 2

It is very important that boilers should be warmed

Answer 2

Warmed up slowly to prevent thermal shock

Question 3

During the warmup period of a heating boiler, the main burner goes out. The operator should

Answer 3

Shut down the boiler, close the fuel valve, and determine the cause of the problems

Question 4

Thermal shock can be reduced by

Answer 4

Warming up boilers slowly Keeping the boilers free of scale build up Covering the tube sheets with refractory Not allowing full flow of cold water into a warm hot water boiler

Question 5

Before staring a new hot water boiler or after a prolonged shutdown, the first item that should be checked is

Answer 5

The inspection certificate

Question 6

During the cold startup of a boiler, slight smoking may occur in__________ fired furnaces

Answer 6

Oil

Question 7

In hot water boiler operation the maximum operating temperature should never exceed

Answer 7

121 degrees Celsius

Question 8

The operating pressure of a hot water heating boiler should be

Answer 8

25% below the relief valve setting

Question 9

A gradual increase of stack temperatures is an indication of

Answer 9

Unclean heating surfaces

Question 10

If shot water heating system is slightly low on water and the boiler is in the lowest part of the system, then the

Answer 10

Upper floors will begin to lose heat

Question 11

At what pressure should a hot water heating boiler operate if the relief valve is set to 200 Kpa

Answer 11

131 Kpa

Question 12

At what pressure should a hot water heating boiler operate is the relief valve is set to 750 Kpa

Answer 12

562 Kpa

Question 13

How often would you test the low level fuel cut off on a low pressure steam heating boiler by blowing out the float chamber

Answer 13

Daily

Question 14

According to the Alberta safety codes act in a low pressure steam boiler, the pressure must be no higher than

Answer 14

103 Kpa

Question 15

The most important rule in safe operation of a steam heating boiler is

Answer 15

Keep the water level in the boiler at the proper level

Question 16

If there is any question as to the accuracy indicated by a gauge glass and the true level cannot be determined

Answer 16

The boiler should be removed from service and all water level indicating attachments checked

Question 17

Rust in the gauge glass is an indication that

Answer 17

Corrosion is taking place in the boiler system

Question 18

In a steam heating system, if a boiler loses ________ per month, this indicates there is a leak in the system

Answer 18

75mm

Question 19

When cutting in an additional hot water boiler into the heating system

Answer 19

The stop valves I the supply and return lines are both closed during warm up