fume safety
WHat does PEL stand for?
Permissible exposure limit
should you ever weld with wet gloves or wet hands?
NOOO
Number one cause of shop fires?
Combustible materials near welding
is a hoodie okay to weld in because it has long sleeves?
NOO
What symptoms can long term exposure to manganese fumes cause.
Parkinsons like symptoms
Why should you always check a cord before plugging it in?
A damaged cord can shock you or start on fire
WHats a hot work permit and why do some job sites require it?
Formal authorization confirming the area has been checked and is safe for welding.
what happens if your lens shade is too light for the amperage your running?
burn your eyes
what compound forms when welding galvanized steel?
Zinc Oxide
Why can AC current be harder to let go of than DC?
AC can make muscles lock onto the source
What does PASS stand for?
WHat is Pull, aim, squeeze, sweep
Why do welders sometimes wear a separate cap or beanie under their helmet?
Protects hair and scalps from sparks.
What does the N stand for in N-95 mask?
What is NOT oil resistant
Why is it more dangerous to get shocked while standing in water?
Water conducts electricity, so more current can pass through your body.
Why should compressed gas cylinders always be stored upright and secured?
a fallen cylinder can have its valve sheared off, turning it into an uncontrolled projectile.
Why does correct lens shade matter differently for different amperage settings?
higher amperage produces more intense arc radiation, requiring darker shade to protect the eyes
What fume is produced by welding stainless steel?
Hexavalent chromium
What welding current will we mostly be welding with?
DC ( Direct current)
what are the 3 things needed for a fire to start, often called the fire triangle?
Why should jewelry be removed before welding, even if its not near moving equipment ?
Metal jewelry can conduct heat and electricity