Reactivity/Instability Hazard - YELLOW | NFPA Hazard Diamond

 

Reactivity/Instability Hazard - YELLOW| NFPA Hazard Diamond | Identification Diagram

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Scaffold : Over Head Hazard

Reactivity/Instability Hazard - YELLOW| NFPA Hazard Diamond | Identification Diagram

 

This hazard diamond is from the National Fire Protection Association-NFPA Code. The first number relates to Health (Blue) Hazards, the second number relates to Fire/Flammability (Red), and the third to Reactivity (Yellow). The Health Hazard having the number from 0 to 4.

 

Reactivity/Instability Hazard (YELLOW)

 

Hazard Rating 4 – High hazard, Materials that in themselves are readily accomplished of detonation or of explosive decomposition or explosive reaction at normal temperatures and pressures. Comprises materials that are sensitive to mechanical or localized thermal shock. If a chemical with this hazard rating is in an advanced or massive fire, the area should be evacuated.

 

BENCH GRINDER SAFETY

Hazard Rating 3 - Materials that in themselves are capable of detonation or of explosive decomposition or of explosive reaction but which require a strong initiating source or which must be heated under confinement before initiation. Includes materials which are delicate to thermal or mechanical shock at elevated temperatures and pressures or which react explosively with water without requiring heat or confinement. Ensure Fire fighting should done from an explosion-resistant location.

 

Hazard Rating 2 - Materials that in themselves are normally unstable and readily undergo violent chemical change but do not detonate. Includes materials which can undergo chemical change with rapid release of energy at normal temperatures and pressures or which can undergo violent chemical change at elevated temperatures and pressures. Also includes those materials which may react violently with water or which may form potentially explosive mixtures with water. In advanced or massive fires, ensure fire fighting should done from a protected location.

 

SCISSOR LIFT SAFETY TIPS

Hazard Rating 1 - Materials that in themselves are normally stable but which may become unstable at raised temperatures and pressures or which may react with water with some release of energy but not violently. Required caution must be used in approaching the fires and applying water.

 

Hazard Rating 0 - Materials that are normally stable even under fire exposure conditions and which are not reactive with water. Normal fire fighting procedures may be used with the required precautions.

 

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