TB 145 - Combustible Metal

Question 1

Most combustible metal fires produce extreme temperatures ranging from _______ to ________ degrees Fahrenheit.

Answer 1

5,000 9,000

Question 2

Fires involving combustible metals are designated as a class ___ fire.

Answer 2

“D”

Question 3

Alkali metals (________, _________ and ________) are water-reactive under non-fire conditions and should be placarded with the ____ under the NFPA 704 system.

Answer 3

SIP Sodium, Lithium and potassium
“W”

Question 4

Alkali Earth metals (____________), Transitional metals (__________, _____________), and Other Metals (___________) do not present the same hazards as Alkali metals; however, when burning, they can become extremely dangerous when in contact with water

Answer 4

Magnesium Titanium, Zirconium Aluminum

Question 5

Combustible Metals:
These metals (titanium, magnesium, zirconium, and aluminum) shall be indicated by an “___” in the fourth space if the quantities or form meet the LAFD criteria for placarding

Answer 5

M

Question 6

Criteria for “M” placarding is occupancies that exceed ______ ponds of combustible metals or that process or store _____ pounds or less that are in the form of dust, chips, powders, turnings or ribbons.

Answer 6

500
500

Question 7

If multiple hazards exist, the symbols (no more than ____) shall be stacked with the most severe hazard indicated on _____ and the combustible metal symbol “M” (when applicable) always positioned at the ________.

Answer 7

Two
Top
Bottom

Question 8

Members of the LAFD working within ____ feet of a burning metal product are considered to be working in an IDLH environment

Answer 8

30

Question 9

Members within the IDLH shall be “_________ _____________”.

Answer 9

Fully Encapsulated

Question 10

Dry powder, under the brand name “_____-__-__”, is the only approved product provided by the LAFD to extinguish combustible metal fires.

Answer 10

MET-L-X

Question 11

Supply and Maintenance maintains approximately ____ pounds of MET-L-X and has the ability to deliver it to the scene of the fire.

Answer 11

500

Question 12

The entire stock of MET-L-X maintained at Supply and Maintenance would only extinguish a ____ square foot fire.

Answer 12

Fifty

Question 13

Cumbustible Metals:
Incident commanders may consider using ___________ to protect exposures and avoid run-off at the same time.

Answer 13

Barricade

Question 14

Alkali metals are all highly reactive and are never found in elemental forms in nature. Because of this, they are usually stored immersed in ______ ___ or kerosene (________ oil).

Answer 14

Mineral oil Paraffin

Question 15

If no extinguisher is available, ______ ________ ___________ _______ ________ powder may also be on site and can be used.

Answer 15

dry sand, graphite powder, dry sodium, G1-R or Met-L-X

Question 16

Flames burning with a ‘_______ _____’ appearance, the presence of flowing or molten metal, and white colored smoke are conditions that exist during a combustible metal fire

Answer 16

“Whit Hot”

Question 17

___ pounds of product (MET-L-X) is required for every one square foot of fire

Answer 17

10

Question 18

Without an effective means of disbursing the product over a large area, the LAFD is only capable of using Met-L-X to control small fires in the ___________ stage

Answer 18

Incipient

Question 19

A small amount of product (approximately the size of a ____________) that is in the incipient stage of burning may possibly be manually separated from exposures by a fully encapsulated Firefighter through use of a shovel or similar tool

Answer 19

Wastebasket