DB 14-04 NFPA 704 Placards Flashcards
Several provisions in the LA fire code that regulate hazardous materials have been amended to include the placement of what which are designed to warn emergency first responders that a hazard exists?
Warning placards and warning signs
The NFPA 704 placard identifies hazards of a material in terms of what 3 principal categories?
Health, flammability, reactivity (instability)
Hazards on the NFPA 704 placard are indicated numerically by severity ranging from what?
4 (most severe) to 0 (no special hazard)
The system of diagrams within the NFPA 704 placard are what colors and located where within the placard?
Health (left) - blue
Flammability (top) - red
Reactivity (right) - yellow
The 4th space at the bottom of the NFPA 704 placard is used for what?
Special information described by a symbol
If multiple hazards exist, how many hazards will be indicated in the space at the bottom of the 704 placard?
The 2 worst hazards
The symbols (no more than 2) shall be stacked with which hazard positioned on top?
Most severe hazard
The hierarchy of selecting and stacking the hazard symbols are which ones (most hazardous or critical to least hazardous)?
A, W, M, JM, FW, LW, and C
Industrial/commercial buildings which have received “conditional use” approval for residential occupancy by artists/artisan will be identified with what letter in the bottom of the 704 placard?
“A”
The recommended symbol to indicate unusual reactivity with water and to alert firefighting personnel of the possible hazard of using water is what letter on the bottom of the 704 placard?
“W”
Combustible metals (titanium, magnesium, zirconium, and aluminum) shall be indicated with what letter at the bottom of the 704 placard?
“M”
The letter “M” indicated quantities or physical state satisfy the LAFD criteria for placarding occupancies that exceed how many pounds of combustible metals per table 4-A of the LA fire code of that process or store how many pounds or less of combustible metals that are in the form of dusts, chips, powders, turnings or ribbons?
500
Business involved in jewelry manufacturing that use quantities of hazardous materials that exceed the exempt amounts in division 4 of the LA fire code shall be indicated with a what on the bottom of the 704 placard?
“JM” (jewelry mart)
Agricultural/wildlife “exempt fireworks” shall be indicated with a what in the bottom of the 704 placard for any quantities stored?
“FW”
Occupancies where excessive moisture or smoke will severely affect the value of the building or contents shall be indicated with a what at the bottom of the 704 placard?
“LW” (limited water)
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
Substances that need to be contained (such as PCB’s) to avert further environmental damage will be indicated with what letter in the bottom of the 704 placard?
“C”
What shall be posted whenever hazardous materials are stored, processed, or used, in quantities requiring a permit under Division 4 of the Los Angeles Fire Code or if the material is a combustible metal?
Warning placards
Where shall warning placards be located?
At entrance of building where hazmat stored, processed, or used and other locations as may be required by fire Chief
At main entrance to any area outside a building where hazmat stored, processed, used
Every aboveground tank used for storage of hazmat, warning placards on at least 2 sides of container
For warning placards, in lieu of posting each tank in an area containing more than how many tanks, the area itself may be posted as approved by the LAFD?
1 tank
Where shall warning signs be posted?
Whenever hazmats are stored, processed, or used in quantities requiring a division 4 permit or combustible metals, in or outside building
Any area where hazmat stored, processed, or used shall have a sign conspicuously posted
For warning signs conspicuously posted, letters should be no less than how many inches high on a contrasting background reading “no smoking” or open flame within 25 feet as required by the fire Chief?
3 inches
For warning signs, every such sign shall name the what on it?
Material of hazard classification
For warning placards, degree of hazard (order of severity “0-4”) is determined by what reference?
NFPAs “fire protection guide to hazmat” (NFPA 49, 325M, 491M, and 704)
