Awareness-Level Lesson 4 Presentation Hazardous Materials for First Responders, 3rd Ed. Typical Components of PPE • Respiratory equipment • Protective clothing – Structural fire-fighting protective clothing – High-temperature protective clothing – Chemical protective clothing Awareness Level 4–2 What Appropriate PPE Protects • • • • Skin Eyes Face Hands • • • • Feet Body Head Respiratory system (1 of 2) Awareness Level 4–3 What Appropriate PPE Protects (2 of 2) Awareness Level 4–4 PPE and Hazardous Materials • Structural fire-fighting and high-temperature protective clothing — Offer limited protection against chemical hazards • Chemical-protective clothing — Offers protection against hazardous materials – Requires training above the first responder Awareness Level Awareness Level 4–5 Requirements of PPE • NFPA standards state requirements for personal protective equipment – Design – Certification – Testing Awareness Level 4–6 Structural Fire-Fighting Protective Clothing • Provides protection from: – Heat – Moisture – Ordinary hazards associated with structural fire fighting Awareness Level 4–7 Components of Structural FireFighting Protective Clothing • • • • Helmet Coat Pants Boots • Gloves • Personal alert safety system (PASS) device • Hood Awareness Level 4–8 Limitations of Structural Fire-Fighting Clothing • Limited protection against hazardous materials – – – – Neither corrosive-resistant nor vapor-tight Gaps occur in clothing Chemicals can be absorbed into the equipment Rubber or neoprene in boots, gloves, and SCBA facepieces can become permeated by chemicals and rendered unsafe for use Awareness Level 4–9 Structural Fire-Fighting Protective Clothing at Haz Mat Incidents • Structural fire-fighting protective clothing is commonly used at haz mat incidents when the following conditions are met: – Contact with splashes of extremely hazardous materials is unlikely – Total atmospheric concentrations do not contain high levels of chemicals that are toxic by way of skin contact – There is a chance of fire or there is a fire Awareness Level 4–10 Purpose of Chemical-Protective Clothing and Equipment • To shield or isolate individuals from the chemical, physical, and biological hazards that may be encountered during haz mat operations Awareness Level 4–11 Types of CPC • Liquid-splash protective clothing • Vapor-protective clothing Awareness Level 4–12 CPC Combinations • Single or multipiece garment • Encapsulating • Nonencapsulating Awareness Level 4–13 Selection of CPC • Depends on specific chemical and on specific tasks • Selection considerations: – Most CPC is impermeable to moisture – Garment’s permeation, degradation, and penetration abilities – Service life Awareness Level 4–14 CPC Permeation • Permeation — Occurs when a chemical passes through the CPC fabric on a molecular level Chemical spill Awareness Level 4–15 CPC Degradation • Degradation — Occurs when the characteristics of the material in use are altered through contact with chemical substances (1 of 2) Awareness Level 4–16 CPC Degradation An acid eating away the outer layers of structural fire-fighting protective clothing is an example of chemical degradation. Awareness Level 4–17 (2 of 2) CPC Penetration • Penetration — Occurs when there is an opening or a puncture in the protective material (1 of 2) Awareness Level 4–18 CPC Penetration Chemicals can penetrate PPE through gaps, tears, punctures, or other openings. Awareness Level 4–19 (2 of 2) CPC Service Life • Reusable • Limited use • Disposable Awareness Level 4–20 CPC Written Management Program • All emergency responders and organizations who routinely select and use CPC should establish a written CPC management program. Awareness Level 4–21 Positive-Pressure SCBA Components • • • • • Facepiece Pressure regulator Compressed air cylinder Harness assembly End-of-service-time indicators Awareness Level 4–22 Advantages of Positive-Pressure SCBA • Maintains air pressure inside the facepiece slightly higher than normal atmospheric pressure outside • Independence • Maneuverability Awareness Level 4–23 Disadvantages of Positive-Pressure SCBA • • • • • Heavy weight of the units Limited air supply duration Change in profile that may hinder mobility Limited vision caused by facepiece fogging Limited communications if not equipped with a microphone or speaking diaphragm Awareness Level 4–24 Level D Ensembles • Used for nuisance contamination and used only when no atmospheric hazards exist • Provide no respiratory protection and minimal skin protection • May not be worn in the hot zone Awareness Level 4–25 Level D Ensemble Components • Consist of typical work uniforms, street clothing, or coveralls • Includes items such as: – – – – Gloves Safety glasses Boots Hardhats Awareness Level 4–26 Level D Ensemble Use • Atmosphere contains no hazard • Work functions preclude splashes, immersion, or the potential for unexpected inhalation of or contact with hazardous levels of any chemicals Awareness Level 4–27 PPE Care and Inspection • The user must take all steps to ensure that the protective ensemble performs as expected • All PPE and respiratory equipment must be inspected on a routine basis • Records must be kept of all inspection procedures Awareness Level 4–28 Summary • Personal protective equipment is essential in emergency response. The type of PPE used depends on the specific incident. Typical PPE consists of respiratory equipment and either structural fire-fighting, high-temperature, or chemical-protective clothing. • Structural fire-fighting clothing provides very limited protection against hazardous materials. (1 of 3) Awareness Level 4–29 Summary • Chemical-protective clothing provides protection against hazardous materials. No one type of CPC protects against all hazards. • Positive-pressure SCBA is often used at incidents and has both advantages and disadvantages. (2 of 3) Awareness Level 4–30 Summary • Level D ensembles are typical work uniforms, street clothes, or coveralls and are only appropriate for nuisance contamination. • PPE care and inspection is an important component in ensuring that PPE is properly maintained and safe for the user. (3 of 3) Awareness Level 4–31 Awareness-Level Lesson 4 Presentation Hazardous Materials for First Responders, 3rd Ed.