CLASS 5 BOILER EXAM FULLY SOLVED CORRECTLY #13.

CLASS 5 BOILER EXAM FULLY SOLVED CORRECTLY #13
All safety relief valves installed on pressure equipment in OR must be _________
approved - correct answer ASME

Steam trap discharge piping shall be designed to the same _______ unless it is
__________ to atmosphere - correct answer pressure, vented

Which of the following is not considered a type of weld - correct answer Fillet

T/F Low and high pressure gas switches only are required on boilers of 12.5 mbtu and
greater. - correct answer True

T/F Combustion air requirements are not the responsibility of the boiler installation
contractor. - correct answer False

T/F Bell and spigot fittings may be used on refrigeration service. - correct answer False

T/F All valves and cocks with steam or spindle shall have adjustable pressure type
packing glands for steam and heating boilers. - correct answer True

T/F You can rebuild boiler controls. - correct answer False

T/F Combustion air proving can be controlled by an energy management system. -
correct answer False

Under ASME sec IV part HG400 safety valve for a 15lb steam heating boiler over 15000
btu heat insput shall not be smaller than ______ and larger than ______. - correct
answer 1, 4 1/2 NPS

In a completed groove weld, the term for the surface of the weld on the side from which
the welding is done is the _______ ________. - correct answer weld face

T/F Class 5A certificate holder can install either ASME B31.1 or B31.5 pressure piping. -
correct answer False

T/F Boilers under 400k btu are exempt from the requirements of ASME CSD-1 - correct
answer False

T/F Pipe fabricated in the shop needs to be inspected by your companies quality control
manager but the boiler inspector only needs to see the piping once it is on the job site. -
correct answer True

What class fire is fueled by liquids? - correct answer Class B

, An installation permit which has been processed through the boiler section must: -
correct answer Be obtained prior to starting work and posted on the site prior to start of
work

T/F All automatically fired boilers from 12,500,000 btu or less are subected to ASME
CSD.1 - correct answer True

Doubling the size of pipe increases the capacity by how many times? - correct answer
Four

Max amount of weld undercut allowed by ASME B31.1 - correct answer 1/32"

T/F Slip on flanges welded inside and out on category M - correct answer True

Blueprint solid line with arrows is a _________ line - correct answer Dimension

Is PVC allowed in compressed air systems? - correct answer No

Flanges installed on steam piping systems must: - correct answer Be stamped with the
manufactures name and ASME B.16.5 and class number.

T/F Pneumatic pressure test of regulated piping systems must be Chief boiler inspector.
- correct answer True

ASME code governing power boilers? - correct answer Section 1

T/F Seal welds may be used to avoid leakage on B31.5 should not be considered as
contributing strength - correct answer True

T/F When installing a domestic H2O supply boiler the following info is on the boiler data
plate, h160psi, 240F, this unit is exempt from CSD-1 - correct answer False

T/F Backing is the use of material or a device placed against the backside of a joint to
support and retain molten weld metal. - correct answer True

ORS.480.634 says licensed journeyman plumbers can install hot H20 boilers if: - correct
answer less than 750k btu, up to 180 gal, and max 150psi

Combination temperature and pressure relief valves are used on direct fired hot water
supply boilers in order to: - correct answer keep water temp. Below 210 and relieve at
the set pressure of the safety valve.

T/f Stress relieving is a form of heat treatment - correct answer True

What section of ASME boiler and pressure vessel code sets rules for braising process
and performance standards? - correct answer IX