Chapter 11

Question 1

Control

Answer 1

The procedures, techniques, and methods used in the mitigation of a hazardous materials WMD incidents, including containment, extinguishment, and confinement

Question 2

Confinement

Answer 2

Those procedures taken to keep a material, once released, in a defined or local area

Question 3

Containment

Answer 3

The actions taken to stop a release of a material and keep it in its container or to reduce the amount being released

Question 4

Recovery phase

Answer 4

The stage of a hazardous materials incident after the immediate danger has passed, and when cleanup and the return to normalcy have begun

Question 5

The recovery phase can go on for:

Answer 5

Days, weeks, or even months

Question 6

Vapor dispersion

Answer 6

The process of lowering the concentration of vapors by spreading them out, typically with a water fog from a hose line

Question 7

Vapor suppression

Answer 7

The process of controlling vapors given off by hazardous materials by covering the product with foam or other material or by reducing the temperature of the material, by preventing vapor ignition

Question 8

Complete dam

Answer 8

Damn placed across a small stream or ditched to completely stop the flow of materials through the channel

Question 9

Damming

Answer 9

The product-control process used when liquid is flowing in a natural channel or depression, and its progress can be stopped by constructing a barrier to block the flow

Question 10

Diking

Answer 10

The placement of materials to form a barrier that will keep a hazardous material and liquid form from entering an area or that will hold a material in an area

Question 11

Dilution

Answer 11

The process of adding a substance, usually water, to weaken the concentration of another substance

Question 12

Diversion

Answer 12

The process of redirecting spill or leaking material material to an area where it will have less impact

Question 13

Overflow dam

Answer 13

A dam that includes piping installed at a slight downward angle, which allows the water to flow over the released liquid, and with enough capacity that the water drains without overtopping the damn, thereby trapping the heavier-than-water material held behind at the base of the dam

Used to contain materials heavier than water

Question 14

Remote shut off

Answer 14

A valve that provides a way to remotely shut down a system or isolate a leaking fitting or valve

Question 15

Retention

Answer 15

The process of creating a defined area to contain a hazardous materials release

Question 16

Underflow dam

Answer 16

A dam that includes piping installed at a slight upward angle, which allows the water to flow below the release liquid, and with enough capacity that the water drains without causing the lighter-than-water material to over top the dam, thereby trapping the lighter-than-water material behind the top of the dam

Used to contain materials lighter than water