How are hazards rated in the NFPA safety diamond?
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 are the 4 categories of identification for NFPA diamonds?
NFPA diamond labels can be used on any type of chemical container to alert people of existing hazards….If used in conjunction with GHS labels, the user may notice four different categories of pictograms that denote a health hazard:
- Corrosive.
- Toxic.
- Harmful.
- Irritation.
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 is the fire diamond hazard?
NFPA 704 sometimes is called a “fire diamond” because the diamond-shaped sign indicates flammability of a substance and also communicates essential information about how emergency response teams should deal with a material if there is a spill, fire or other accident.
What are Category 1 and 2 hazards?
Hazards are divided into two categories. Those which score high on the scale (and therefore the greatest risk) are called Category 1 hazards. Those that fall lower down the scale and pose a lesser risk are called Category 2 hazards.
What is a Level 4 hazardous material?
Risk level 4: Materials too dangerous to human health to expose firefighters. A few whiffs of the vapor could cause death or the vapor or liquid could be fatal on penetrating the firefighter s normal full protective clothing.
What does a 3 in the Red Diamond of the NFPA hazard warning label indicate?
Unstable at high temperature and pressure. Reacts with water. 2-Normally unstable but will not detonate. 3-Can detonate or explode but requires strong initiating force or heating under confinement.
What does Level 4 flammability hazards indicate?
Risk level 4: Very flammable gases or very volatile flammable liquids. Shut off flow and keep cooling water streams on exposed tanks or containers. Risk level 3: Materials that can be ignited under almost all normal temperature conditions. Water may be ineffective because of the low flash point.
What is a Category 2 hazard housing?
The HHSRS provides a way that hazards can be assessed and the best way of dealing with them identified. If a hazard is a serious and immediate risk to a person’s health and safety, this is known as a Category 1 hazard. If a hazard is less serious or less urgent, this is known as a Category 2 hazard.
How many categories of hazard are used by the housing health and safety rating system?
29 categories
The HHSRS assesses 29 categories of housing hazard. Each hazard has a weighting which will help determine whether the property is rated as having category 1 (serious) or category 2 (other).
What are the 7 hazard categories?
The 7 common workplace hazards are:
- Safety hazards.
- Biological hazards.
- Physical hazards.
- Ergonomic hazards.
- Chemical hazards.
- Work organization hazards.
- Environmental hazards.
What are the 6 main categories of hazards?
Workplace hazards fall into six core types – safety, biological, physical, ergonomic, chemical and workload.
- Safety hazards.
- Biological hazards.
- Physical hazards.
- Ergonomic hazards.
- Chemical hazards.
- Workload hazards.
How do you read NFPA ratings?
The red-colored section of the NFPA Diamond is located at the top or twelve o’clock position of the symbol and denotes a material’s flammability and susceptibility to catching fire when exposed to heat. Flammability is graded on a 0 to 4 scale, and a lower rating is safer.
What is health hazard level 3?
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 does a red 4 on a NFPA diamond mean?
Flammability Hazard information
4-Can cause death or major injury despite medical treatment. The red diamond, appearing at the top of the label, conveys Flammability Hazard information.