?
If I had a paint thinner fire what type of fire extinguisher would you use
Type B
what increases starting amperage
Hot start
When picking a storage area for gas cylinders, the storage area should be away from heat and ___________
Emergency exits
_______________ is formed when ultraviolet radiation decomposes chlorinated hydrocarbon
Phosgene
why does mineral based Flux need to be oven dried
because the flux draws Moisture
True or false you need a burning shield to Oxyfuel burn
True
what are the 2 types of oxyfuel torches
Mixing chamber and injection style torches
__________________gas maybe only found with in 6 inches of the weld pool
Nitrogen Dioxide
what line has 1 long dash followed by 2 shot dashes
cutting plane
How much acetylene can be used at 1 time according to OSHA
1/7th of a tank
what do you call a flat spot on a bevel
A landing or land
_______________ is the measurement of the total number of electrons flowing
Amperage
According to AWS " a good rule of thumb " for fillet weld size is what if you aren't given a weld size
Half the thickness of the thinnest material, Only time this changes if a low hydrogen process is used like 7018 then it goes half the thickness of the thickest material
on a blue print what in in the bottom right corner of a print
The key
______________ is a gas created by ultra violet light
Ozone
In a mixing chamber style torch how does the mixing chamber mix the fuel and oxygen
they come in at equal high pressure making turbulence and combining
Who considers welding "hot work"
National Association of fire prevention
Amperage in SMAW is the measurement of what
the total number of electrons flowing
what type of line is 1 long dash followed by 1 short dash
center line
What is the loudest welding process requiring the most hearing protection
Carbon Arc cutting
what safety devices is used to stop a flame going to the tank in oxyfuel cutting
Flashback arrestor
An Arcs Temperature are depend on 3 things
Voltage, Arc length, and Atmosphere its passing through
what polarity do you use for the best penetration of a 7018
DCEP
What does an injection style use torch use to mix fuel and oxygen
it uses a venturi effect
which welding rod is mineral based flux 7024 or 7016
neither