Edwards TCU 40/80 - Page 69

FIRE FIGHTING MEASURES
Flammable Properties
Flash Point will not burn
Method TOC
Flammable limits in Air % by Volume
LEL Not applicable
UEL Not applicable
Autoignition Not determined
Fire and Explosion Hazards:
Cylinders may rupture under fire conditions. Decomposition may occur.
Potential Combustibility:
"SUVA" HP62 is not flammable at temperatures up to 80 deg C (176 deg F) and at atmospheric pressure.
Data are not available at higher temperatures and pressures. However, one of the components, HFC-143a
is flammable. Another, HFC-134a, has been shown in tests to be combustible at pressures as low as 6o
psig at ambient temperature when mixed with air at concentrations of 65 volume % air. Therefore,
"SUVA" HP82 should not be mixed with air for leak testing. In general, it should not be used or allowed
to be present with high concentrations of air above atmospheric pressures. Experimental data have also
been reported which indicate combustibility of HFC-134a in the presence of certain concgntrations of
chlorine.
Extinguishing Media
As appropriate for combustible in area.
Fire Fighting Instructions
f Cool cylinder with water spray or fog. Self-contained breath ng apparatus (SCBA) is required if cylinders
rupture and contents are released under fire conditions.
ACCIDENTAL RELEASE MEASURES
Safeguards (Personnel)
NOTE: Review FIRE FIGHTING MEASURES and HANDLING (PERSONNEL) sections before
proceeding with clean-up. Use appropriate PERSONAL PROTECTIVE EQUIPMENT during clean-up.
Accidental Release Measures
Ventilate area, especially low or enclosed places where heavy vapors might collect. Remove open flames.
Use self-contained breathing apparatus (SCBA) for large spills or releases.
(Continued)
^^
TCU 40/80 Temperature Control Unit 63