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20 Cards in this Set
- Front
- Back
Boiler overload capacity is normally what percentage of boiler full power capacity |
120% |
|
What is the minimum steam drum pressure on an operating boiler |
85% of boiler operating pressure |
|
What is the standard size of firebrick |
2.5” X 4.5” X 9” |
|
Refractory expansion joints are normally what size |
1/4” |
|
A boiler purge will have how many volumetric air changes |
5 |
|
Once a boiler purge is complete fires must be lighted within what time frame |
5 minutes |
|
Fuel oil temperature at the burner front shouldn’t exceed what temperature |
125 degrees Fahrenheit |
|
Castable refactory must be air cured for how long prior to baking out |
Two Days |
|
What type of tile is made of silicon carbide |
Baffle tile |
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What does NSTM 221 cover |
Boilers |
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Water contamination tests for fuel oil storage and service tanks and procedures for cleaning such contaminated tanks can be found where |
NSTM 541 Petroleum and fuel oil testing in |
|
Insulating block is capable of withstanding what maximum temperature |
1500 degrees Fahrenheit |
|
The deaerated feedwater used in the hot deaerated backfill layup shall meet what dissolved oxygen limit |
15 PPB |
|
What is the required amount of sodium nitrate that is used for a sodium nitrate wet layup |
10 LBS per 1000 gallons of feed water |
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What does NSTM 593 cover |
Pollution control |
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What is the periodicity of lubricating sliding feet |
Monthly |
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What is the minimum water temperature used for hydrostatic testing |
70 degrees Fahrenheit |
|
What is the maximum water temperature used for hydrostatic testing |
120 |
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What hydrostatic test methods use design pressure |
135 and 150 percent |
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How long must hydrostatic pressure be maintained prior to conducting the inspection of pressure parts |
15 minutes |