Worksheetspipefitter prep
Total questions: 43
Worksheet time: 22mins
Sight glass minimum connection
1"
3/4"
1/2"
1/4"
Water column minimum connection
2"
1"
3/4"
1/2"
LWCO minimum connection
1 1/4"
1/2"
1"
3/4"
Control manifold minimum connection
1"
1/2"
3/4"
1/4"
Sight glass drain minimum connection
1/4"
1/2"
3/4"
1"
Bottom blow-off minimum connection
1 1/4"
1"
3/4
1/4
Bottom blow-off maximum connection
1"
3"
2"
2 1/2"
Surface blow-down maximum connection
3"
2 1/2"
1 1/4"
3/4"
Flanged saftey valve maximum connection
4"
3"
1/2"
1 1/2"
Take-off control line minimum connection
1"
3/4"
1/2"
1/4"
Hangers must be adjustable over
1"
2"
2 1/2"
3"
Siphon/ pigtails minimum connection
1/4"
1/2"
3/4"
1"
AAR malleable iron maximum pressure
150# psi
100# psi
350# psi
500# psi
Cast iron maximum pressure
250# psi
100# psi
150# psi
500 #psi
ASME V max water temp
100°
500°
250°
130°
2 sight glasses are required when psi is over
100 psi
250 psi
300 psi
400 psi
What is the takeout of a 10" short radius weld 90 elbow
15"
20"
10"
5"
What pressure inside of oxygen cylinder
200 #
1000#
3000#
2000#
Acetylene bottles have a fusible link that melts at what temp
300 °
110°
220°
400°
Which direction does a hacksaw blade cut
backwards
Forwards
Both
None
What tubing bend is used in the installation of pipe
hickey
Spring
Rigid
A & B
When handling a newly threaded price of pipe you must be careful because its
Sharp
slippery
Burry
Fragile
What is the purpose of the foot pedal on a pipe threading machine
So the user can be hands free
saftey
To change speeds
To go forwards & backwards
When welding socket weld fittings what is the process?
Ream pipe first
Shoulder 1/16 and tack
Shoulder all the way then remove 1/16 and tack
Tack and weld
Which code governs the installation of process piping
B31.1
B 31.3
B 31.2
B 31.4
Which valve is NOT appropriate as a boiler steam outlet valve on high pressure boiler
Ball valve
Gate valve
globe valve
York valve
Who is responsible to qualify a welder?
Employer
board of saftey
ashmer B 31.3
welding school
What tempeture does an OXY cutting g torch run at?
1200°
3567°
4565°
5438 or 6630
Which stamp is required for the assembly of high pressure boilers
M stamp
A stamp
PP STAMP
R stamp
High pressure pipe welding and welder must be qualified to section _____ of the ASME code
9
1
8
7
What welding position is most commonly used for welding test that will qualify for all positions
5G
1G
6G
6GF
What is the hardest welding position
5G
1G
6G
6GF
A stop valve and a check valve are installed in the
Main header
Outlet superheater
blowdown line
Feed water line
When piping a low water cut off device to a boiler, the device must be piped to what height in relation to the level of gage glass
2" above furnace crown
3" above furnace crown
No lower than visible part of gauge glass
1" above gage glass
What is the minimum size of the drain pipe and blow valve required on a low water cut off that has separate float chamber
1
1/2
3/4
1/4
The valve that offers the least resistance to flow is
Y type globe
globe valve
Gate valve
Ball valve
What type of fitting must be placed in the water piping connection at every right angle to facilitate cleaning and inspection of a water column or low cut off
Cross tee
Side outlet elbow
90 degree elblow
Y branch fitting
Which way should the pressure exerpt on the globe valve seats
Below
above
Both above and below
Pperpendicular
When welding boiler piping known as external piping what type of Asme stamp
A stamp
PP stamp
R stamp
U stamp
The pipefitters license is governed by chapter 146 of mgl. The section of the law is section____
90
48
81
61
The asme high pressure boiler code says that non ferrous pipe or tube shall not be used for any service where temp exceeds ____?
406°
250°
300°
350°
The asme high pressure boiler code limits the use of non ferrous valve. What is the tempeture limitation for a 150 psi bronze threaded gate valve
406°
200°
250°
300°
When installing ss pipe for pharm/process piping what grade piping is recomended
304
309
316
316L
