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16 Cards in this Set
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If the boiler safety valves open during boiler operation, you should: 1) Close the non-return valve on the boiler drum 2) Reduce the fuel and airflow to the boiler 3) Open the blowdown valves 4) Increase the forced draft flow to cool the boiler 5) Shut the boilerdown immediately |
2) Reduce the fuel and airflow to the boiler |
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Soot blowers on a boiler should not be operated when the load on the boiler is below: 1) 75% 2) 50% 3) 35% 4) 30% 5) 40% |
4) 30% |
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While blowing down a boiler that is in operation, you should: 1) Check the rest of the boiler room equipment 2) Add more water to the boiler to replace the blowdown water 3) Fill in the log book for your shift 4) Clean up the area close to the boiler 5) Concentrate only on blowing down the boiler |
5) Concentrate only on blowing down the boiler |
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If the safety valve on a boiler pops and the only pressure gauge indicates well below pop pressure, you would: 1) Reduce boiler pressure and get the gauge checked 2) Increase spring pressure on safety valve 3) Notify the boiler inspector 4) Shut down the boiler and replace the safety valve and gauge glass 5) Shut down to fix the safety valve |
1) Reduce boiler pressure and get the gauge checked |
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A boiler pressure or waterside explosion: 1) Could be the result of water in the fuel oil 2) May be caused by a low water condition 3) Could be the result of broken refractory 4) Could be the result of inadequate ignition 5) Could result from improper soot blowing procedures |
2) May be caused by a low water condition |
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When a boiler is said to “prime”, it means that: 1) The boiler is being over fired 2) The water has not been chemically treated 3) Water is being carried over with the steam 4) The water level in the water drum is too high 5) The steam flow from the boiler is too rapid |
3) Water is being carried over with the steam |
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Soot blowers on a boiler should not be operated when the load on the boiler is below: 1) 75% 2) 50% 3) 35% 4) 30% 5) 40% |
4) 30% |
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Attempting to light a burner _____ may cause a furnace explosion. 1) Without a pilot light 2) From hot refractory 3) Without preheating the fuel 4) By pre-purging the furnace 5) Without first cooling the fuel |
2) From hot refractory |
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A high water level in a boiler: 1) Is usually the result of a boiler feed pump malfunction 2) Will necessitate an immediate shutdown, cool down, and inspection 3) Will not be made worse by dropping boiler pressure or allowing “swell” to occur 4) Is usually the result of a level control malfunction 5) Should cause a high water level shutdown switch to stop the fire |
4) Is usually the result of a level control malfunction |
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What causes the level in the gauge glass to be higher than in the drum? 1) The starting up of the stand-by feedwater pump 2) Column drain valve leaking 3) Swell in boiler steam drum 4) The gauge glass steam and water valves are both open 5) Steam valve on the gauge glass closed |
5) Steam valve on the gauge glass closed |
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In the event of a low water condition in a boiler, the engineer in charge should: 1) Shut down the burner, let the unit cool, then restore level 2) Continue firing and restore the level 3) Shut down the burner immediately 4) Notify the chief engineer before responding to the condition 5) Shut down the burner, let the unit cool, then inspect it |
5) Shut down the burner, let the unit cool, then inspect it |
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The purging process for a furnace should be done: 1) With the pilot light on 2) Before each burner is lit 3) Before the second burner is lit 4) With the fuel valve in the open position 5) With the fuel valve closed |
5) With the fuel valve closed |
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A firetube boiler furnace explosion: 1) May be the result of oil in the water causing a foaming condition 2) Can be the result of too much scale on boiler tubes 3) Is more disastrous than a pressure or waterside explosion 4) Could be caused by poor water circulation 5) May result from a flame scanner not working properly |
5) May result from a flame scanner not working properly |
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When performing a sootblowing operation, it is important to maintain flame stability and: 1) The local environmental agency be notified prior to blowing 2) Ensure drum water level remains constant 3) Ensure that the dislodged soot and ash leave the boiler with the flue gases 4) Stack discharge not become visible 5) Firing rate not be allowed to increase |
3) Ensure that the dislodged soot and ash leave the boiler with the flue gases |
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In the event of a flame failure, an automatic boiler will close the fuel valve and usually: 1) Perform a post-purge 2) Stop the boiler feed pump 3) Begin a restart cycle immediately 4) Simply restart itself with no human intervention 5) Reset itself |
1) Perform a post-purge |
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Most furnace explosions occur: 1) When steam pressure is excessive 2) During the period of increasing the load 3) During the purge period of lighting a boiler furnace 4) During the shutting down of a burner 5) During the lighting up of a boiler burner |
5) During the lighting up of a boiler burner |
