What are the NFPA ratings for health?
Chemical substances are rated for degree of HEALTH RISK (blue diamond), FLAMMABILITY (red diamond), REACTIVITY (yellow diamond), on a scale of 0 to 4. The white diamond is used to indicate the presence of large quantities of chemicals possessing unusual water reactivity (W) or oxidative capability (oxy).
What do NFPA numbers mean?
The higher the number the higher the hazard, as follows: The red diamond, appearing at the top of the label, conveys Flammability Hazard information. Again, the numbers 0 to 4 are used to rate the flammability hazard, as follows: 0-No hazard.
What is a Level 3 health hazard?
Risk level 3: Materials extremely hazardous to health, but areas may be entered with extreme care. Full protective clothing including self-contained breathing apparatus, coat, pants, gloves, and boots, with bands around the legs, arms, and waist should be provided. No skin surface should be exposed.
What are the 3 classification of hazard?
GHS consists of three major hazard groups :
- Physical hazards.
- Health hazards.
- Environmental hazards.
What does a health hazard rating of 2 mean?
2. MODERATE HAZARD This material is normally unstable and will readily undergo violent chemical change, but will not detonate. This material may react violently with water or may form potentially explosive mixtures with water.
What are the NFPA ratings for health fire reactivity and specific hazard?
Number System: NFPA Rating and OSHA’s Classification System 0-4 0-least hazardous 4-most hazardous 1-4 1-most severe hazard 4-least severe hazard • The Hazard category numbers are NOT required to be on labels but are required on SDSs in Section 2.
What are hazard ratings?
Each color code (blue, red, and yellow) of the hazard rating system corresponds to a hazard: health, fire, and instability (denotation or chemical change). Within each colored section, a numerical rating is given to the hazard. The ratings range from 0 to 4. A rating of 4 is the highest.
What are the 4 health hazards?
There are many types of hazards – chemical, ergonomic, physical, and psychosocial, to name a few – which can cause harm or adverse effects in the workplace.
What is a Category 4 health hazard?
The specific Health hazard criteria to be reviewed are: Acute toxicity (oral, Dermal and Inhalation), Categories 1-4. Skin corrosion / Irritation, Categories 1A, 1B, 1C, and 2. Serious eye damage / eye Irritation, Categories 1, 2A, and 2B. Respiratory or Skin Sensitization, Category 1A and 1B.