National Fire Protection Assoc NFPA 326 Safeguarding Tanks and Containers for Entry, Cleaning or Repair

Question 1

What is the definition of bonding? (NFPA 326, Section 3.3.3)

Answer 1

For purposes of tank entry, cleaning, or repair, the joining of metal parts to form an electrically conductive path that will ensure electrical continuity and the capacity to
conduct safely any current likely to be imposed.

Question 2

What is the definition of an unstable (reactive) liquid? (NFPA 326, Section 3.3.28)

Answer 2

A liquid that, in the pure state or as commercially produced or transported, will vigorously polymerize, decompose, undergo condensation reaction, or
become self­reactive under conditions of shock, pressure, or temperature.

Question 3

What should be done before beginning cleaning work on tanks or containers that might be under pressure? (NFPA 326, Section 4.1.11)

Answer 3

Prior to opening or accessing tanks or containers, any internal pressure shall be reduced to atmospheric pressure. Tank or container vapors shall be vented to a safe location or, where required, degassed.

Question 4

When working with the tank, what must be done to all energy sources supplying power to the pumps? (NFPA 326, Section 5.1.1)

Question 5

What type of pumps must be used to remove flammable liquids or vapors from a tank?
(NFPA 326, Section 5.2.4)

Question 6

What type of saw must be used to cut a manway into a tank once it is safe for entry?
(NFPA 326, Section 9.2.5)