asme Questions and Correct Answers the Latest Update
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Course
Asme
Institution
Asme
what is the asme? what does Section 1 of the asme code cover?
American Society of mechanical engineers. people who write the code books the
brains they approve everything on Construction and design.
this code covers rules for the construction of power boilers, electric boilers,
miniature bo...
asme Questions and Correct Answers the
Latest Update
what is the asme? what does Section 1 of the asme code cover?
✓ American Society of mechanical engineers. people who write the code books the
brains they approve everything on Construction and design.
✓ this code covers rules for the construction of power boilers, electric boilers,
miniature boilers, and high temperature water boilers to be used in stationary
service and includes those Powerboilers used in locomotives, portable, and traction
service.
what is the scope of jurisdiction of Section 1?
✓ Section 1 applies to the boiler proper and to the boiler external piping.
what is boiler proper?
✓ superheaters, economizes, and other pressure parts connected directly to the boiler
without intervening valves shall be considered as part of the boiler proper, and shall
conform to section 1 rules.
✓ ( downcomers, risers, tubes Etc...)
what is boiler external piping?
✓ boiler external piping is the piping which begins where boiler proper terminates at
up to the valve of valves required by Section 1.
✓ the first circumferential joint for welded end connections, the face of the first flange
in a bolted flange Connection, and the first threaded joint in that type of connection
✓ a pressure vessel constructed in compliance with Section 1 and in which steam is
generated for use external to the boiler, at a pressure exceeding 15 PSIG by the
direct application of heat.
boilers with a maximum allow working pressure exceeding 125 psi what are the
requirements for valves and piping?
✓ you must have extra heavy piping (schedule 80) and extra-heavy Valves and/or cock
(250lb)
what's the lowest visible part of the gauge glass?
✓ at least 2 inches above the lowest permissible water level. except HRT boilers 3
inches above the top row of tubes
what should the range of a pressure gauge be?
✓ 2 times the safety valve set point, but in no case less than one and a half times.
(hydrostatic test)
how many water level indicators should boilers have?
✓ all boilers should have at least one level indicator.
✓ boilers over 400 PSI shall be provided with two gauge glasses with exceptions.(may
be connected to a single water column)
✓ over 900 PSI two Independent remote level indicators may replace one gauge glass
what type of valves are used between the water column and the boiler?
✓ they must be os&y valve or lever type valves that indicate their position whether
they are open or closed. And they should be locked in the open position. Also lines
going to the water column should be fitted with cross tees for inspection and
cleaning
what type of valves should a gauge glass be fitted with?
✓ quick closing valves so they may be taken out of service quickly.
what are the requirements for a Reheater safety valve?
✓ the reheater safety valve(s)must be capable of relieving all the steam the reheater
can generate. At least 15% of the required capacity shall be placed on the reheater
Outlet.
what is the minimum bearing width of a manhole gasket?
✓ 11 sixteenths of an inch
what is the minimum design temperature of a tube receiving Heat?
✓ 700°f
what's the minimum blowdown of a safety valve?
✓ 2% of set pressure
what's the minimum diameter of a Tell-Tale hole in a stay Bolt?
✓ 3/16 of an inch
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