DB 14-04 NFPA 704 Warning Placards Flashcards
These signs are designed to warn emergency first responders that a ___ exists in an occupancy.
hazard exists
What 5 references are used in this bulletin?
- LA Fire Code
- LAFD Requirement No. 61
- LAFD Standard No. 8 (NFPA 704)
- Identification of Fire Hazards of Materials ( 2007)
- NFPA’s Fire Protection Guide to Hazardous Materials (13th edition)
This system identifies the hazards of a material in terms of how many principal categories?
3 principal categories
What are the three principal categories identified?
- Health hazard
- Flammability
- Radioactivity (instability)
Indicates the order of severity numerically by fire divisions ranging from ___ to __
Four to Zero
Four indicates ____
severe hazard
Zero indicates ___
no special hazard
This information is presented by a system of diagrams with “Health” always being on the ___, “Flammability” at the ___, and the “Reactivity (Instability)” on the ___
Flammability = top
Health = left
Reactivity (instability) = right
What are the color backgrounds for the three hazards?
Flammability = red
Health = blue
Reactivity (instability) = yellow
What is the fourth space at the bottom used for?
Special information
Bottom space:
If multiple hazards exist, what will be indicated in that space.
the two worst hazards
- Stacked with most severe hazard on top
What is the order of symbols from the most hazardous to the least?
A, W, M, JM, FW, LW, and C
What buildings will be identified with an A?
Industrial/Commercial buildings which have received “conditional use” approval for residential occupancy by artist/artisans
What does the W symbol indicate?
Unusual reactivity with water
What metals will be indicated by an M?
Combustible metals (titanium, magnesium, aluminum, zirconium)
What quantities of combustible metals require placarding?
- Occupancies that exceed 500 pounds of combustible metals per Table 4-A of Fire code, or
- process or store 500 pounds OR LESS of combustible metals in form of dusts, powder, turnings, chips, or ribbons
Businesses involved in jewelry manufacturing often use quantities of hazardous materials that are ___ the exempt amounts.
under
However, when there are multiple jewelry businesses within a single building, their combined quantities generally exceed the exempt amounts in ____ of the Los Angeles Fire Code
Division 4
Because of the collective potential hazard within these buildings, these jewelry businesses, including the manufacturers that are over the exempt amounts shall be indicated with a “__” in the fourth space.
JM (Jewelry Mart)
What shall require FW in the fourth space?
Agriculture/wildlife “exempt fireworks” for any quantities stored
When is the fourth space marked with LW (limited water)?
Occupancies where excessive moisture or smoke will severely affect the value of the building or contents
Limited Water:
To limit the losses of these properties: water should be used ___; products of combustion removed ____; and ___ taken in handling the contents during salvage operations.
- water used sparingly
- Products of combustion removed as soon as practicable
- extreme care taken in handling contents during salvage
What symbol is the only symbol not required by this requirement?
LW
The “LW” is the only symbol that is not required by this requirement and would be used only upon request of the occupancy and approved by who?
Fire Chief
