welding safety (110103e) Flashcards
if you catch yourself on fire what do you do?
SDR Stop drop and roll
how far can a welder’s light rays be dangerous?
50ft away even if it has been reflected
What are the two main types of rays that a welder’s light causes?
visible light rays
Ultra violet rays
what does welding galvanized metals cause?
metal fume fever
Zinc chills
what happens when welding over paint and melting plastics?
it can cause fumes that are harmful
plastics fumes can be poisonous
what are some types of welding ventilation?
natural
Mechanical general
local ventilation
what are the explosions in welding called?
Backfires
Burn back
Flashback
how can we make a used fuel tank safe to weld on?
Boiling acid inside
inert gas purging
Steaming
how must gas cylinders be stored?
upright
Safe spot
with a valve cap on
what must a welder do regarding others’ protection?
they must be aware of their surroundings and put up signs and screens to shield their harmful rays.
what Do fuel gas threads have what is different form normal threads?
they use a left-handed thread type so that they don’t get mixed up when connecting to cutting torches.
what is the safety device on cylinders called?
rupture discs
what is the maximum safe working pressure on a acetylene tank?
the maximum safe working pressure is 15 psi
what safety device will prevent flashbacks from becoming catastrophic?
using a flash back arrestor ( one way valve )
