Compressed gas cylinders Flashcards
1
Q
what are the 7 requirements for cylinder markings?
A
Regulatory body (DOT) Serial number Purchaser, user, manufacture Manufactures manual Manufactures ID symbol Retest date, retesters ID symbol, 110% filling, ten year test interval Neck rings owners ID
2
Q
How big must the lettering be
A
1/4 inch high
3
Q
What are the cylinders made of
A
steel
4
Q
How thick are the cylinders
A
3/8 inch
5
Q
cylinders are pressure tested to what pressures
A
1.66 (5/3) their service pressure
6
Q
What is the diabetic heat of compression?
A
heat of compression can generate heat and cause ignition.
7
Q
What is cracking the cylinder used for?
A
the cylinder should be open slightly for a moment to clear the outlet of possible dust
