HANDLING OF PESTICIDES AND THE USE OF PERSONAL PROTECTIVE EQUIPMENT - Agrochemical and Pesticide Safety - page 273

Class C: Fires involving energized electrical equipment where safety to the

operator requires the use of electrically nonconductive extinguish-
ing agents (after the electric equipment has been de-energized, the
use of Class A or B extinguishers may be indicated).

Class D: Fires involving certain combustible metals such as magnesium,

titanium, zirconium, sodium, potassium, and others that require a
heat-absorbing extinguishing medium not reactive with burning
metals.

Figure 6.27 NFPA-704M diamond (National Fire Protection Association,
Fire Protection Guide on Hazardous Materials , 9th ed., 1986).

REFERENCES

American National Standards Institute , Practice for Occupational and Educa-
tional Eye and Face Protection . ANSI, Inc., 1430 Broadway, NY, 1989.