4Th Class Power Engineering B2 C141

Front 1

The external inspection of a boiler:A) may include making sure the exterior of the tubes are in good conditionB) may include making sure the furnace refractory is in orderC) may include making sure the tubes are free of scaleD) must be done after the boiler has been drainedE) may include making sure the valves are in good operating condition

Back 1

E

Front 2

What type of lighting equipment is better to detect flaws and shadows of flaws in a boiler?A) a flashlightB) halogen lightingC) LED lightsD) trouble lightsE) 12 volt lights

Back 2

A

Front 3

How is the proper acid to be used for a boiler acid clean determined?A) The water treatment representative indicates which acid to useB) It depends on which acid is most readily availableC) It depends upon the type of scale that needs to be dissolvedD) It depends on which type of acid was last usedE) It depends on which type of acid the operators are most familiar with

Back 3

C

Front 4

Caustic soda and soda ash are chemicals used for what purpose in a boiler?A) to remove corrosionB) to remove scaleC) to reduce foamingD) to remove oil and greaseE) to reduce carryover

Back 4

D

Front 5

What levels of oxygen must be maintained in the boiler feedwater when using chelates to remove scale?A) 0 ppmB) 5 ppmC) 10 ppmD) 15 ppmE) 20 ppm

Back 5

A

Front 6

Compared to sulphuric acid, which is not an advantage of using sulphamic acid to acid clean a boiler?A) it is less corrosiveB) no noxious fumes are producedC) it reacts slowerD) it is easier to handleE) it is effective on scale

Back 6

C

Front 7

Before cleaning the waterside and as far as is possible:A) a visual inspection of pressure parts should be completedB) all drum internals should be removedC) mud drum sludge should be completely removedD) a scale sample should be taken and an analysis doneE) tubes should be "turbined"

Back 7

A

Front 8

If during the course of an regulated boiler inspection an operator discovers a defect in the boiler, what must he/she do?A) tell the shift engineerB) tell the boiler inspectorC) inform OH&SD) enter it in the logE) contact the Chief Engineer

Back 8

B

Front 9

A boiler has been in operation for one year and is now taken off the line for cleaning, repair and inspection. The boiler is one of three in a battery and the other two will remain in operation. This one boiler is to be drained and cooled. Before any person is allowed to enter the boiler drum, the correct safety procedure requires that:A) the person be equipped with the correct kind of tools and a list of required repairsB) the drum be vented, the safety valve gagged, and all ashes and soot removed from the fire boxC) the worker be provided with a safety line, first aid kit, and hard hatD) the main steam, blowdown and feedwater valves be closed, chained and taggedE) the worker be provided with a safety kit for confined space entry

Back 9

D

Front 10

On what types of boilers are rotary wire brushes and cutters used to remove scale?A) scotch marine boilersB) small watertube boilersC) steam generatorsD) firetube boilersE) packaged boilers

Back 10

B

Front 11

What does Section VII of the ASME code deal with?A) construction of power boilersB) construction of heating boilersC) care of power boilersD) care of heating boilersE) welding and brazing qualifications

Back 11

C

Front 12

What are the advantages of using sulphamic acid, as opposed to sulphuric acid, to acid clean a boiler? 1. it is quicker acting2. it is cheaper3. no noxious fumes are produce4. it is less corrosiveA) 1, 2B) 3, 4C) 1, 2, 3D) 2, 3, 4E) 1, 2, 3, 4

Back 12

B

Front 13

An inhibitor, when added to acid, will:A) minimise the effect the acid has on the metalB) make the acid compatible with the sewer system for disposalC) strengthen the acid thereby shortening the cleaning procedureD) eliminates the acid from attacking the boiler metalE) cause foaming in the boiler

Back 13

A

Front 14

Chelates may be used to clean a boiler if:A) sufficient is not availableB) if the scale is mainly composed of magnesium ionsC) the boiler can only be shut down for a short period of timeD) if there is not a lot of scale to removeE) chelates are part of the regular water treatment program

Back 14

E

Front 15

A hydrostatic test on a high pressure steam boiler:A) is part of the required inspectionB) must only be done by the inspectorC) will test the high pressure steam fuel cut-offD) should be done with the Chief Engineer presentE) must be done before start-up of a boiler

Back 15

A

Front 16

What may happen if oxygen is present in the boiler feedwater if chelates are being used for scale removal? 1. the effectiveness of the treatment will be reduced2. large amounts of scale may slough off3. pitting may increase4. magnetite layers could form on the tube surfacesA) 1, 2B) 3, 4C) 1, 3D) 2, 4E) 1, 4

Back 16

C

Front 17

What is a "rattler" used for?A) to remove dust from bag filtersB) to determine the thickness of watertubesC) to knock scale off the outside of firetubesD) to stress test piping supportsE) to dislodge soot

Back 17

C

Front 18

Just before entering the waterside of the boiler it is important to:A) notify the inspector in writing of your intent to do soB) ensure the chief engineer is aware of your intentC) be wearing self contained breathing apparatus (SCBA)D) test the atmosphere with an oxygen "sniffer"E) obtain permission to do so from plant management

Back 18

D

Front 19

How are firetube and small watertube boilers usually cleaned?A) by an alkaline soakB) by mechanical meansC) by handD) using an inhibited acidE) using ultrasonic cleaners

Back 19

B

Front 20

A boiler inspection:A) must be done after every shut down of the boilerB) must be done when the boiler inspector requests itC) must be done every two yearsD) is done with the owner's permission onlyE) must be done before the boiler is ready for start-up

Back 20

B

Front 21

How may small leaks such has from hairline cracks in a pressure part of a boiler be located in a boiler?A) radiographic inspectionB) visual inspectionC) ultrasonic testingD) fluorescent penetrant testingE) hydrostatic testing

Back 21

E