DB 14-04 NFPA 704 Placards Flashcards
This system identifies the hazards of a material in terms of three principal categories; namely, “____,” “____,” and “___,”
Health / Flammability / Reactivity
And indicates the order of severity numerically by fire divisions ranging from “____,” indicating a severe hazard, to “Zero (0),” indicating no special hazard.
Four (4)
This information is presented by a system of diagrams with “Health” always being on the ___.
left
The “Reactivity (Instability)” on the ____.
right
blue for “___” hazard
Health
yellow for “____”
Reactivity
The fourth space:
If multiple hazards exist, the ___ worst hazards will be indicated in that space
two
The symbols (no more than two) shall be stacked with the ___ hazard positioned on ___ and the second most severe hazard directly below.
most severe / top
Industrial/commercial buildings, which have received “conditional use” approval for residential occupancy by artist/artisans, will be identified with an “____” in the bottom fourth space.
A
The recommended symbol to indicate unusual reactivity with water and to alert firefighting personnel of the possible hazard of using water is the symbol “____”.
W
Combustible metals (titanium, magnesium, zirconium and aluminum) shall be indicated with an “M” in the fourth space if the quantities or the physical state satisfy the LAFD criteria for placarding (occupancies that exceed ____ of combustible metals as per Table 4-A of the Los Angeles Fire Code or that process or store _____ or less of combustible metals that are in the form of dusts, chips, powders, turnings, or ribbons.
500 pounds
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)
Agricultural/wildlife “exempt fireworks” shall be indicated with an “___” in the fourth space for any quantities that are stored. If multiple hazards exist, the two worst hazards shall be indicated.
FW
Occupancies where excessive moisture or smoke will severely affect the value of the building or contents shall be indicated with a “____” in the fourth space.
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 the ___.
Fire Chief
Substances that need to be contained (such as PCB’s) to avert further environmental damage will be indicated with a “____”.
C
Location of Warning Placards:
At the ___ to any building where hazardous materials are stored, processed, or used, and at such other locations as may be required by the Fire Chief.
entrance
Location of Warning Placards:
At the _____ to any area outside a building where hazardous materials are stored, processed, or used.
main entrance
Location of Warning Placards:
Every aboveground tank used for the storage of hazardous materials shall be posted with warning placards on at least ___ of any such container.
two sides
EXCEPTION: In lieu of posting each tank in an area containing more than one tank, the ___ may be posted as approved by the LAFD.
area itself
Such signs shall be conspicuously posted at any location within or outside of a building where hazardous materials are stored, processed, or used, shall be _____ lettered on a contrasting background with letters at least _____ in height.
conspicuously / three inches
Any area where hazardous materials are stored, processed, or used, shall have a sign conspicuously posted in letters no less than ____ high on a contrasting background reading “No Smoking” or open flame within ____ as required by the Fire Chief.
three inches / 25 feet
