BOILERMAKER 4 QUESTIONS AND ANSWERS

Slip blinds used in a hydrostatic test must meet or exceed the engineering specifications for all flanges in the system. - True Tapped holes used with screwed-in eyebolts should have a minimum depth of how many times the bolt diameter? - 1 1/2 A(n) _______is a machined metal slot in a shaft and on parts such as gears and pulleys that accept a key. - Keyway A(n)__________ fits into a keyway and prevents parts such as gears or pulleys from rotating on a shaft. - Key ______ are established standards for machining threads. - Thread standards A chain sling should be discarded if any portion of the chain is worn by____ - 15 percent or more A hook that is hooked 1/4 off center can theoretically carry about what percent of the rated load? - 86 A one-handed signal that is given with the fist in front of the body and the thumb pointing toward the signaler's body means - extend the boom A tag line should be attached to a load where it will give the____ - greatest mechanical advantage After reaching 50 percent of the desired test pressure during a hydrostatic test, increase the test pressure in increments of__ - 10 percentAn approximation of the diameter of a screw is known as the screw's_______ - Nominal size An excessive number of trays in a tower will result in _______. - excessive pressure drops across the tower Custom-fabricated spreader and equalizer I beams should be tested at what percent of their rated capacity? - 125 Dredging and other marine work require what type of slings because they withstand corrosion better? - Chain Fasteners with ____________ thread are used when rapid assembly or disassembly of parts is required. - United National Coarse (UNC) thread Heat that can be detected by touch is called _______ - sensible heat How many Btus are needed to change water into steam? - 970 If it is apparent that the crane operator has misunderstood a hand signal, the signal person should___ - signal the operator to stop In a forced draft system, a fan pushes the air into the_____. - tube sheet In which type of feed combination does an extra feed appear in the bottom product stream? - Extractive L Figure 1A Koch-Glitsch fastener stamped with the symbol shown in Figure 1 is made of_____. - Type 304L stainless steel Light distillates are taken at what point on a distillation tower? - Near the top Long loads are supported during lifting operations with____ - spreader beams Many piping specifications require that what device be used to detect the presence of foreign material in a pipeline? - Steam targets Mixing rigging hardware of different lifting capacities is okay, as long as the capacity of one of the hardware items exceeds the weight of the load. - false Most atmospheric distillation towers heat crude oil to this temperature at the bottom of the tower - Between 650°F and 700°F One of the most important pretest requirements is _________. - defining the test boundaries One of the slings best suited for situations where the load is abrasive, hot, or tends to cut is a(n)_____. - metal mesh sling OSHA requires that a hook be replaced if the throat has opened what percent or more from Its original size? - 15 Pressure gauges should be connected directly to what part of the system being tested? - high pointPressure gauges used for boilers system testing must be calibrated once every _____. - 6 months Slings are attached together using_____. - shackles