safety
1. Why does WorkSafeBC enforce the Occupational Health and Safety Regulation?
to define the rights and responsibilities of employers and workers
What are two variations of FCAW process?
self-shield and duel-shield
What gas is recommended to minimize splatter when welding low carbon steel?
C-25 (75%argon and 255 CARBON DIOXDE
What is the minimum amount of argon is used for spray transfer?
80%
In GMAW which type of liner is normally used for aluminum filler wires?
nylon or plastic
What safety standard does the OHS Regulation provide?
minimum legal standard
What process deposits the largest volume of weld in a short amount time?
Submerged arc
What type of liner is normally used with steel filler wires?
hardened steel
What mode of metal transfer uses the lowest voltage and current?
short-circuit
What is the contact tip usually made of?
copper or copper alloy
According to Part 3 of the OHS Regulation, who is responsible for
ensuring that workplace inspections are carried out at intervals that will
prevent the development of unsafe working conditions
employers
In the CSA filler metal wire specification for FCAW, What does the suffix CH indicate?
controlled hydrogen
Which filler metal wire is the most popular for use on high strength low alloy steels?
ER49S-3 (ER70S-3)
What polarity is spray transfer?
DCEP
Electrode extension or wire stick out refers to the distance from the end of
contact tip to the end of the wire
. What is a lockout/tag-out procedure intended to prevent?
unwanted startup of equipment
In the FCAW filler metal wire specification, the letter T indicates?
Tubular
What typical gas is used for non-ferrous metals?
argon
What mode of metal transfer is used for all position welding at a higher current?
Pulsed spray
A constant speed wire feeder is used with what type of power source?
constant voltage ( constant potential )
Which of the following increases the risk of “pendulum effect” for a worker using a fall-protection system?
working to either side of the anchor point
In the wire specification E49 1 T-9-CH what does 9 indicate?
indicate self-shield or gas-shield
What happens to the duty cycle of GMAW gun when spray metal transfer mode is used?
decreased in duty cycle
In GMAW-P what are the four variables the may be adjusted?
peak current, background current, pulse width and pulse frequency
What classification of flux is recommended with the SAW process when making a single pass weld on scaled or rusty base metal ?
active fluxes