Coast Guard Exam

After using a pipe cutter to cut a piece of pipe, the inside edge of the pipe should be? - Answer- deburred with a pipe reamer carbon steel bolts can be rather than alloy steel bolts to make up a flange if the normal operating. . . - Answer- pressure doesn't exceed 300 PSI piping is sized by its nominal? - Answer- inside diameter from 1/8 inch to 12 inches which of the listed materials have been used to manufacture piping available in standard weight, extra strong, and double extra strong wall thickness? plastic copper steel all the above - Answer- steel Coast guard regulations permit copper pipe to be used for steam service subjected to a max pressure and temp of? - Answer- 250 psi 406 F steam piping subject to main boiler pressure must be hydrostatically tested at specified intervals. Therefore, which of the following statements is true? -the piping must be tested at a P and T specified by a Coast Guard marine inspector -the piping must be tested at 1 1/2 times working P every 4 years -piping under 3 inches nominal piping size need not to be hydrostatically tested. -the piping must be tested at 2 times max allowable P every 4 years - Answer- piping under 3 inches nominal piping size need not to be hydrostatically tested. when renewing sections of pipe in a hydraulic system, the nominal pipe size of the piping always indicates the? - Answer- size for threaded connections internal pipe threads are cut with? - Answer- taps when pipe is properly screwed into a tapped hole, it will give the correct fit when? - Answer- all but two or three threads are covered insulation on deck steam piping must be installed securely because? - Answer- deck steam lines are subject to vibration from water hammer steam supply piping to deck machinery is insulated in order to? - Answer- reduce heat loss from the system which pipe listed has the largest outside diameter if they are all a 3/4" pipe -standard wall thickness -extra strong -double e