Only some of the firetubes in firetube boilers are:

Only some of the firetubes in firetube boilers are: A ) expanded B ) beaded C ) flared D ) rolled E ) seal welded Answer:...

Boiler tubes may be fabricated in a _________ form, or they may be welded.

Boiler tubes may be fabricated in a _________ form, or they may be welded. A ) rolled B ) seamless C ) seamed D ) cast Answer:...

To form a drum or shell of the required diameter, the plates must be rolled to the correct _________.

To form a drum or shell of the required diameter, the plates must be rolled to the correct _________. A ) thickness B ) width C ) diameter D ) curvature Answer:...

Boiler tubes are sometimes welded to _____, which have already been welded to the headers or drum.

Boiler tubes are sometimes welded to _____, which have already been welded to the headers or drum. A ) tubes B ) welds C ) stubs D ) manholes Answer:...

Directly after rolling and while the tube is still hot, a reeling machine shown in Fig. 14 smooths the outer surface. This is called __________.

Directly after rolling and while the tube is still hot, a reeling machine shown in Fig. 14 smooths the outer surface. This is called __________. A...

_______ boilers must be built or put together in the field (field erected).

_______ boilers must be built or put together in the field (field erected). A ) Recovery B ) Sectional C ) Larger D ) Package Answer:...

In the field, the stress relieving of welded pipe joints may be accomplished by means of __________ induction coils, which are wrapped around the welded section of the pipe.

In the field, the stress relieving of welded pipe joints may be accomplished by means of __________ induction coils, which are wrapped around the welded...

The ASME Code Section __ specifies that the size of an elliptical manhole shall not be less than 280 mm by 380 mm or 250 mm by 410 mm.

The ASME Code Section __ specifies that the size of an elliptical manhole shall not be less than 280 mm by 380 mm or 250 mm by 410 mm. A ) IV B )...

Postweld heat treatment, often called stressrelieving, consists of heating the welded parts uniformly, to a temperature sufficient to relieve most of the stresses created by the heat from the welding. The parts are then cooled at a constant rate.

Postweld heat treatment, often called stressrelieving, consists of heating the welded parts uniformly, to a temperature sufficient to relieve most of...

Drum manhole openings may be elliptical or _____.

Drum manhole openings may be elliptical or _____. A ) slotted B ) circular C ) square D ) dished Answer:...

The gaskets used are the woven type for pressures up to _____ kPa and the metallic type for higher pressures.

The gaskets used are the woven type for pressures up to _____ kPa and the metallic type for higher pressures. A ) 1500 B ) 2500 C ) 5000 D ) 3450 Answer:...

The drum is used as the major anchor point for other boiler components, and for this reason, accurate location is important.

The drum is used as the major anchor point for other boiler components, and for this reason, accurate location is important. A ) structure B ) header C...

Coal pulverizers must be installed _____ to allow installation of coal piping to the boiler.

Coal pulverizers must be installed _____ to allow installation of coal piping to the boiler. A ) last B ) first C ) only D ) early Answer:...

The _________ steel carries the weight of the steam drum and the major pressure components.

The _________ steel carries the weight of the steam drum and the major pressure components. A ) structural B ) main C ) mild D ) welded Answer:...

Large quantities of ______ are used to complete the foundations, which must support the loads from the boiler and all of the auxiliary equipment.

Large quantities of ______ are used to complete the foundations, which must support the loads from the boiler and all of the auxiliary equipment. A...

The covers fit on the ______ of the drum and are held in place by means of bolts and yoke pieces.

The covers fit on the ______ of the drum and are held in place by means of bolts and yoke pieces. A ) ends B ) outside C ) inside D ) middle Answer:...

The boiler tubes themselves are used to support the top _____ in a bottom-supported boiler.

The boiler tubes themselves are used to support the top _____ in a bottom-supported boiler. A ) cover B ) drum C ) header D ) tubes Answer:...

The use of a membrane or water-cooled walls has reduced the use of __________ in modern water tube boilers.

The use of a membrane or water-cooled walls has reduced the use of __________ in modern water tube boilers. A ) refractory B ) insulation C ) cladding D...

Tubes for boiler application are either hot-finished, or _____ -drawn depending on the size, tolerance, and finish desired.

Tubes for boiler application are either hot-finished, or _____ -drawn depending on the size, tolerance, and finish desired. A ) cold B ) hot C ) mild D...

Another method used to produce seamless tubes is known as ________.

Another method used to produce seamless tubes is known as ________. A ) cold rolling B ) extrusion C ) polishing D ) casting Answer:...

Nozzles and stubs for connecting the drum to tubes and piping are formed by _____ forging from a solid steel cylinder, or "billet".

Nozzles and stubs for connecting the drum to tubes and piping are formed by _____ forging from a solid steel cylinder, or "billet". A ) cold B ) hot C...

Upon completion of the structural steel installation, the "U" shaped hangers are attached to the structural steel for support of the main steam ______.

Upon completion of the structural steel installation, the "U" shaped hangers are attached to the structural steel for support of the main steam ______. A...

A final test which is carried out in the manufacturer's shop is a hydraulic or hydrostatic test, (conducted according to the ASME Code Section I, PW-54), at a pressure of ____ times the design pressure.

A final test which is carried out in the manufacturer's shop is a hydraulic or hydrostatic test, (conducted according to the ASME Code Section I, PW-54),...

What is meant by the foundation of a boiler?

What is meant by the foundation of a boiler? A ) The person who designed the boiler B ) The ground support of the boiler C ) The setting of the boiler D...

For pressures up to ______ and temperatures up to 454°C, handhole covers with gaskets are used and are bolted into place.

For pressures up to ______ and temperatures up to 454°C, handhole covers with gaskets are used and are bolted into place. A ) 10,000 B ) 8370 C )...

When a manhole opening is made in a drum or shell, the area becomes _______ due to the amount of metal removed.

When a manhole opening is made in a drum or shell, the area becomes _______ due to the amount of metal removed. A ) stronger B ) weaker C ) flatter D...

______ tubes have no welded joints.

______ tubes have no welded joints. A ) Boiler B ) Superheater C ) Seamless D ) Cold Answer:...

The drum is supported by U-bolts, which permit linear movement of the drum with ___________ variations.

The drum is supported by U-bolts, which permit linear movement of the drum with ___________ variations. A ) temperature B ) size C ) pressure D )...

The _____ form the connection for the attachment of the boiler steam generating tubes to the drum and the saturated steam outlet tubes from the top or steam space of the drum.

The _____ form the connection for the attachment of the boiler steam generating tubes to the drum and the saturated steam outlet tubes from the top...

Why do boilers have allowances for expansion?

Why do boilers have allowances for expansion? 1 To prevent the brickwork from cracking 2 To prevent undue stress on the pipework 3 To prevent thermal...

The function of the rolling mill is to ________ the tube and reduce the wall thickness to the approximate dimensions required.

The function of the rolling mill is to ________ the tube and reduce the wall thickness to the approximate dimensions required. A ) smooth B ) roll C...

The bottom-supported boiler has concrete drum _________, which support the bottom drum and bottom headers.

The bottom-supported boiler has concrete drum _________, which support the bottom drum and bottom headers. A ) hangers B ) holders C ) foundations D...

The steam drum is usually the _______ major pressure component placed in the steel structure.

The steam drum is usually the _______ major pressure component placed in the steel structure. A ) last B ) first C ) second last D ) only Answer:...

Drumheads are formed from flat plate by hot pressing with suitable forming dies, and then machining the circumferential welding grooves.

Drumheads are formed from flat plate by hot pressing with suitable forming dies, and then machining the circumferential welding grooves. A ) True B...

Nozzles and stubs for connecting the drum to tubes and piping are formed by hot forging from a solid steel cylinder or ______.

Nozzles and stubs for connecting the drum to tubes and piping are formed by hot forging from a solid steel cylinder or ______. A ) billet B ) stub C...

It is not allowed to make any welds directly to the drum _____ stress relieving has been completed.

It is not allowed to make any welds directly to the drum _____ stress relieving has been completed. A ) after B ) before C ) during D ) until Answer:...

All piping and ductwork must have provision for _______.

All piping and ductwork must have provision for _______. A ) expansion B ) installation C ) vibration D ) shrinkage Answer:...

Cladding (also called lagging) is the metal covering, which protects the _____ surface of the boiler.

Cladding (also called lagging) is the metal covering, which protects the _____ surface of the boiler. A ) inner B ) outer C ) wet D ) bottom Answer:...

Handholes and manholes are provided in drums and ________ to give access to allow for cleaning, inspection, and repair during the life of the boiler.

Handholes and manholes are provided in drums and ________ to give access to allow for cleaning, inspection, and repair during the life of the boiler. A...

The boiler pressure parts are allowed to expand __________ from the main supports at the top.

The boiler pressure parts are allowed to expand __________ from the main supports at the top. A ) up wards B ) sideways C ) downwards D ) static Answer:...

Boiler ______ is the term used to describe the airtight metal casing of a boiler wall.

Boiler ______ is the term used to describe the airtight metal casing of a boiler wall. A ) wall B ) metal C ) casing D ) house Answer:...

Combustion air is fed at three elevations of the furnace: primary, secondary, and ________.

Combustion air is fed at three elevations of the furnace: primary, secondary, and ________. A ) upper B ) lower C ) tertiary D ) after Answer:...

The combustion products from burning municipal waste are very ________.

The combustion products from burning municipal waste are very ________. A ) hot B ) corrosive C ) many D ) wet Answer:...

The higher the tube metal temperature, the ________ the degree of tube metal loss.

The higher the tube metal temperature, the ________ the degree of tube metal loss. A ) less B ) greater C ) minimum D ) smaller Answer:...

The vibration also serves to aid combustion by _______ out the bed of burning biomass.

The vibration also serves to aid combustion by _______ out the bed of burning biomass. A ) shaking B ) leveling C ) turning D ) moving Answer:...

The concept of using waste energy to generate steam has been gaining in popularity. This is mainly because of ______ fuel costs.

The concept of using waste energy to generate steam has been gaining in popularity. This is mainly because of ______ fuel costs. A ) lower B ) moderate C...

Corrosion of the ______ furnace area of the boiler can be severe during refuse firing.

Corrosion of the ______ furnace area of the boiler can be severe during refuse firing. A ) upper B ) middle C ) lower D ) recovery Answer:...

In order to keep the salts in the boiler water dissolved, and to avoid deposits on the tubes, the steam produced contains _____ moisture.

In order to keep the salts in the boiler water dissolved, and to avoid deposits on the tubes, the steam produced contains _____ moisture. A ) 30% B...

If water contacts molten smelt, a violent explosion will result. It is not a _______ reaction but a _________ reaction.

If water contacts molten smelt, a violent explosion will result. It is not a _______ reaction but a _________ reaction. A ) chemical, physical B )...

The vibrating grate systems, have grate bars attached to a frame that _______ to remove the ash.

The vibrating grate systems, have grate bars attached to a frame that _______ to remove the ash. A ) rotate B ) move C ) vibrate D ) turn Answer:...

Steam injection is a procedure for increasing the recovery of oil from wells, which have been _______ depleted.

Steam injection is a procedure for increasing the recovery of oil from wells, which have been _______ depleted. A ) completely B ) partially C ) entirely D...