Codes Flashcards
B31.1
Power piping
steam over 15 PSI,
Hot water over 250° or 160 psi
B31.3
Process piping
Hazardous piping
HP piping
Pressure over 250 psi
ASME Section I
Power boilers
— Boilers with gas pressure greater than
15 psig (high pressure)
— Boilers with high temp water with
operating pressure greater than 160
psig and temp greater than 250°F
ASME Section 4
Heating boilers
— Steam 15 PSI or less
— Hot water 250°F or less
ASME Section 8
Unfired pressure vessels
ASME section 9
Welding and brazing
CMR 522
Massachusetts Regulations
The pipefitter license is governed by chapter 146 of M.G. L. the section of this law is section ________ of M.G. L
81
Category M fluid service falls under what code?
B31.3
When does ASME section IV require safety valves?
When used on superheater or rehearse, discharging superheated steam over 450°F
Name temperature controls required by CMR 522 16.
1) Temperature actuated control to shut off fuel supply, when system water reaches a present max operating temperature
2) high temperature control that will cause a shutdown, which will require a manual reset.
List pressure/temperature controls required by CMR 522 16
1) Steam pressure/temperature control device which will shut off the fuel supply to each boiler, when the steam pressure/temperature reaches a preset maximum operating pressure.
2) High steam pressure/temperature limit control devise, the functioning of this control shall cause a safety shutdown ( lockout) requiring manual reset.
Pressure vessel stamp
U
Power boiler stamp
S
Heating boiler stamp
H
