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When are steel chain slings recommended
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a big control valve is pulled. who is responsible for the rigging
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Boiler study guide
boiler maker question and answers
| Question | Answer |
|---|---|
| When are steel chain slings recommended | when rigging from 3 points |
| a big control valve is pulled. who is responsible for the rigging | crane operator and rigger |
| what should be used to hold the pipe when setting up two 40-foot joints of 16-inch STD WT pipe | 4 legged roller top jacks |
| the hitch made by wrapping the sling around the load, then passing one eye of the sling trough a shackle is called | choker hitch |
| when should rigging material be attached to a beam that is being demolished | before any bolts are removed or any cutting is done on the beam |
| which of the following has a greater possibility of being a respiratory hazard | asbestos |
| which type of insolation is required before a vessel is entered | locking, tagging, and blinging lines that feed the vessel |
| according to OSHA oxygen and acetyle cylinders in storage must be separated what minimum distance | 20 feet |
| what is the first thing a boler maker should do before cutting into a tank or vessel | determine the content |
| scales on a drawing are usually written in | inches and feet |
| dimensional measurements can be found on all of the following except | mechanical flow diagram |
| all vessels elevations are taken from the | top of steel on the embed rings (base plate) |
| a gate valve is being removed from a product line. all of the following procedures must be performed except | valve must be in closed position |
| what is a spud wrench most commonly used for | aligning flanges |
| what type of valves are typically used on a s sight glass to direct flow | way valves |
| handhole cap and plug material is verified by the | P4 report |
| what are the four major components of a gate valve | body, bonnet, gate, and steam |
| what is the most commonly used fasteners in boiler construction | threaded |
| on site who determines what grade of material to be used for repair | QA/AC |
| what is the best tool to be used to "prepare" XXH2-INCH tubing for welding | milling motor |
| all of the following tools are used in preparation of the butt weld of a tube except | chipping gin |
| what preparations must be made for the spring can hangers of a section of a pipe before hydrotesting can be done | no preparation must be made |
| which of the following connecting units are used on pipe hangers | eye bolts, turnbuckels, threaded rods |
| which of the following materials may be used to safely secure scaffold boards to a platform | #9 tie wire |
| for high temperature service, one end of a stud should be | marked B16 |
| How should bolts on an 8-bolt flange be tightened | in a cross-over pattern |
| what is the primary reason for high-point vents in hydrotesting | to purge air pockets |
| what are the most commonly used fasteners | threaded bolts |
| whey must spring cans be adjusted after they are put into service | because the lines become heavier when they are in service |
| variable spring-can supports should be used on what type of piping | piping that must be supported at all times during thermal expansion and contraction |
| which of the following fasteners is used on concrete | expansion anchor bolt |
| after installation of a variable pipe support, a boilermaker should verify the | proposed length of travel has no obstruction |
| how should tubes be attached in drum holes | rolled |
| which of the following is most important when fitting up thick wall boiler tubing | the inside diameter must match up |
| what should be used to plug a tube at either end of a well to prevent air circulation | purge pager |
| what should be done before furnace fittings for tube replacements are ground | the inside of the fitting should be inspected |
| a reboiler in a tower is being hydrotested. the water should be at what level | above the reboiler |
| what is the preferred socket for tray work | 12 point |
| how many types of bubble caps are there | 6 |
| why does a boilermaker use a test tree that has a bleed valve when hydrotesting an exchanger | so tht the pump can be disconnected |
| what determines the type of bolts to be put back in an exchanger so that it can be bolted back together | the service of the exchanger |
| what type of exchanger needs only one end open for plugging tubes | harpin |
| the tube-to-tube sheet joint achieved by mechanical or explosive expansion of the tube hole in the tube sheet is the | expansion joint "J" factor |
| what type of tank has legs on the roof | floating roof |
| what information is required to locate a nozzle that will be installed on a vessel shell | the elevation and degree of the centerline of the nozzle |
| the variable spring on a sring-type hanger should be adjusted to what position before the pipeline is put into service | cold |
| all of the following, are possible reasons for a spring can over-loadin except | incorrect orientation of the support |
| what problems are associated with tube rolling | improper expanding and depth |
| why is a monel gasket used in HF acid piping | because of its high resistance to acid |
| which of the following is required when test blinds are installed | longer bolts |
| which of the following are used to prevent tubes from sagging because of weight | baffles |
| what is the area of a concrete slab that is 25 feet 6 inches long and 10 feet wide | 255 square feet |
| which gas passes through the center in a cutting torch tip | oxygen |
| add the following fractions and reduce to the lowest common denominator (24 5/8 + 13 15/16 +8 1/4) | 46 13/16 |
| on a blueprint, 1/4"=1' means | 1 inch on the drawing equals 1 foot of actual size |
| a major component of a tower is a | downcomer |
| what is indicated by the notation "3-inch, 150#" on a isometric drawing | 3-inch diameter, 150# flange |
| what is the preferred type of rigging material used to lift coated pipe | nylon slings/straps |
| the best source for information about welding on a tube is the | QA/QC |
| equal-width grating panels are being unloaded on the job site. one piece measures 4 1/2 ft in width. there are 7 panels. what is the total width when all the panels are laid side by side | 31 1/2 |
| what is the demister pad used for | filtering chemical/vapors |
| who is responsible for blocking valves that isolate a reboiler before work is begun | operations |
| the channel head cover on an exchanger is used on the | tube side |
| what type of steel beams are attached to the furnace wall with clips to contain a boilers horizontal expansion | buckstays |
| who determines the size and type of sring can to be used | engineer |
| how many bolts must be removed so that a 3-inch, 150# flange can be hot bolted | 0 |
| how often must entry permits be updated during normal working hours | at the end of each shift change |
| all of the following would be reasons for rejecting a synthetic sling for rigging except | an identification tag on the wrong side of the sling |
| tube expanding is a method of | connecting |
| why should a full port valve be used for a corrosion probe | so the probe will not corrode the valve |
| what is "back gouging" | removing metal from the other side of a welded joint |
| what type of purge must be maintained when a catalyst is removed from a reactor | nitrogen |
| where should the shell side gasket on the new tube bundle be installed | over the floating head end of the tube bundle, before the bundle is put back in the exchanger |
| chain hoist are primarily designed for what type of lifting | vertical lifting |
| what type of valve is used on a hydro test tee to maintain test pressure after the hydro has reached its required pressure | check |
| if the sling angle decreases, sling stress | increases |
| what substance is resistant to oil and solvent but has poor resistance to chemical | neoprene |
| a reboiler in a tower is being hydrotested. the water should be at what level | above the reboiler |
| what type of drawing shows the precise dimensions of a section or part of the larger plan | scale |
| a worker is installing a blind in a flange for blanking off the gas line to the burners. the appropriate gasket cannot be found. what should the worker do | do not continue installing the blind until the proper gasket is located |
| what is the most commonly used light lifting device | chain hoist |
| why should a boilermaker "crack" the cylinder valve before connecting the regulator to the oxyacetylene cylinder | to clean the cylinder valve of foreign matter |
| what is one way to permanently support a pipe in a pipe rack | with shoes |
| which type of drawing would normally be used to fabricate a spooled piece of pipe | isometric |
| which row of fractions is in the correct numerical order | 1/8, 3/16, 1/4, 5/16, 3/8, 7/16 |
| what is the typical procedure to install tubes in a steam drum | tig welding |
| what must be locked out before a tube can be removed safely from the reboiler | feed water pumps |
| how many people can tie-off to a vertical lifeline | a maximum of two people |
| what is the name of the heated interior of the boiler | fire box |
| the maximum fillet size on a tube to drum seal welds should be | 3/8 inch |
| what is meant by "overheating" a metal with an oxyacetylene torch | heating to a temperature that imapairs the metal |
| thermocouples are used for | indicating the temperature of the metal to which is attached |
| what size generating tube stock is permitted inside the steam and mud drum of a boiler | 1 1/2 to 2 inch |
| what are the first two blinds turned on a tower being taken out of service | inlet and outlet |
| what tubes run vertically in a furnace | rediant |
| on an open root weld on plate, the combined grooved angle of the bevled | 30 degrees |
| what is meant by the letters "RFWN" | Raised Face Weld Neck |
| a boiler maker is installing trays in a tower. where should the weird plates be installed | between the trays |
| where is the convection section of a heater located | above the radiant tubes |
| a leak in a fin fan is being repaired while hydrtesting is being conducted on a piping system. what should be done during the repair | pressure should be relieved before any tightening is started |
| the channel head cover on an exchanger is used on the | tube side |
| where is the demister pad usually located | top of tower |
| what can be used in place of a shackle pin | nothing |
| what are the 3 types of basic hitches | vertical, choker, basket |
| what are lifting lugs | rigging material used to clamp onto surfaces such as shell plates or sheet metal |
| what is the primary purpose of a P&ID | provides scale drawings of piping and instrumentation control systems |
| eye bolts, anchor bolts, and self taping bolts are all types of | fasteners |
| how much is 3 inches in hundredths of a foot | 0.35 |
| how is a plate dog used | it buffers to align vertical plates at the weld |
| why are there ball checks on sight glass valves | to stop the flow if there are leaks or if the sight glass breaks |
| what type of gasket is usually used when a steam service drum is blinded | garloc |
| pack beds are bound in all of the following location except in | furnaces |
| the length of a rectangle is 8 feet 6 inches and the width is 4 feet 7 inches, what is the perimeter | 26 feet 2 inches |
| what is the proper way to attach two slings together | use a shackle |
| what is a "Rosebud" normally used for | heating metal |
| which of the following characteristics of a gasket must be checked before the casket is installed in a flange | material |
| how should a boiler maker determine the proper size gasket to install in a set of flanges | check the size and rating stamped on the flanges |
| wht type of gasket is normally used on a flange valve in a high-pressure/high temperature line | flexitallic spiral wound |
| a boiler maker who is hydrotaticaly testing an exchanger should have which of the following information | the correct test pressure |
| when an exchanger is blinded, spaces are used | to space open the exchanger side for steaming or nitrogen purge |
| when an exchanger tube is plugged, whey is the tube cut before the second plug is installed | to prevent pressure build up |
| when performing a welding repair, you must have a copy of what on hand | the quality assurance manual |
| rigging is to be done with wire sling over a steel beam. when is a softener required | at all times |
| where can the pass partition of an exchanger be found | on the channel head |
| a reinforcement pad is used on the shell of a vessel to | strengthen nozles and manways |
| what tool is typically used to remove hole caps from a stainless steel header | ARC gouger |
| where is the exchanger blinded during a tubeside pressure test | on the channel head flanges |
| what is the value of "Pi" | 3.142 |
| what is the sum of 3 7/8 + 2 5/8 + 3/16 | 6.375 |
| what is the difference in elevation between a point at 14 feet 1/8 inch and a point at 11 feet 1 3/4 inches | 2 feet 10 3/8 inches |
| the most commonly used wrench size for tray work is | 9/16 inch |
| what minimum number of bolts must be removed when an 8 inch 300# slip blind is blinded | 5 |
| what information is found on the exchanger nameplate | exchanger operating pressure |
| what component must be removed before a u-tube bundle can be removed | channel head |
| a boiler maker is hydro testing an exchanger and finds that a tube is leaking, what should the boiler maker use to stop the leak | plugs |
| what wrench size is required to tighten a nut on a 7/8 inch heavy hex head bolt in a flange | 1 7/16 inches |
| a boiler maker must have all of the following when working inside a vessel except | a flange spreader |
| a pipe will be lifted with wire rope slings, which of the following techniques should be used | use a double wrap on the choker to prevent the choker from sliding on the pipe |
| what should be used to secure a socket to an impact wrench | retainer rings |
| a pressure differential hydro test on an exchanger is one | that is different when fire water is used on the shell and a hydro pump is used on the tubes |
| what is the total length of 4 1/16 inches, 5 1/8 inches, 2 3/4 inches, and 7 3/8 inches | 19 5/16 inches |
| 1ft 3 3/4 in + 2ft 1 1/16 in + 5ft 10 7/8 in | 9ft 3 11/16 in |
| a cylindrical tank is 10 ft high and 7 ft in diameter, what is the approximate volume of the tank | 385.0 cubic feet |
| what tool is used to stop leaks on the tube sheet of exchangers | rolling motor |
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ecdumes23