Hazmat Awareness · Chapter 9 · Review · Awareness track

Personal Protective Equipment (PPE)

Referencing the content of hazardous materials awareness and operations at the awareness level

PPE selection is an operations/technician function; awareness identifies suggested levels from ERG but does not dress for entry.

Learning objectives (6)

Match ERG PPE guidance to level names — Translate ERG suggestions into A-D vocabulary for communications.
Explain Level A — Fully encapsulating suit with SCBA for highest respiratory and skin protection.
Explain Level D — Work uniform minimum; no chemical protection.
Define permeation vs degradation — Permeation is breakthrough; degradation is physical breakdown of material.
Awareness PPE limit — Do not don entry ensemble or cross hot line without qualification.
Use NIOSH Pocket Guide PPE section — Confirm respiratory and skin protection when chemical ID known.

Chapter outline

CPC and respiratory protection families
Levels A, B, C, D vocabulary
Permeation and degradation
ERG PPE suggestions vs level names
NIOSH/OSHA respiratory programs
Awareness: no entry ensemble
Buddy system and rehab for entry teams (vocabulary)
Compatibility charts for CPC/respirator selection

When sources disagree (9 topics to verify before you teach from this chapter alone)

Printable study sheet Printable study sheetRead first, then practise the track.

Showing Awareness track material. Switch tracks on the chapter page.

Vocabulary · 14

Level A
Encapsulating suit and SCBA; highest protection.
SourceNIOSH — Personal protective equipment for chemical, biological, and radiological hazards (CDC / NIOSH). Retrieved 2026-05-21: https://www.cdc.gov/niosh/docs/2018-155/default.html
Level B
Non-encapsulating suit with SCBA; high respiratory protection.
SourceNIOSH — Personal protective equipment for chemical, biological, and radiological hazards (CDC / NIOSH). Retrieved 2026-05-21: https://www.cdc.gov/niosh/docs/2018-155/default.html
Level C
Splash suit with air-purifying respirator when criteria met.
SourceNIOSH — Personal protective equipment for chemical, biological, and radiological hazards (CDC / NIOSH). Retrieved 2026-05-21: https://www.cdc.gov/niosh/docs/2018-155/default.html
Level D
No chemical protection; station uniform.
SourceOSHA — Personal protective equipment (PPE) overview (U.S. Department of Labor / OSHA). Retrieved 2026-05-21: https://www.osha.gov/personal-protective-equipment
SCBA
Self-contained breathing apparatus; supplied air on back.
SourceNIOSH — Personal protective equipment for chemical, biological, and radiological hazards (CDC / NIOSH). Retrieved 2026-05-21: https://www.cdc.gov/niosh/docs/2018-155/default.html
APR
Air-purifying respirator for specific atmospheres.
SourceNIOSH — Personal protective equipment for chemical, biological, and radiological hazards (CDC / NIOSH). Retrieved 2026-05-21: https://www.cdc.gov/niosh/docs/2018-155/default.html
CPC
Chemical protective clothing.
SourceNIOSH — Personal protective equipment for chemical, biological, and radiological hazards (CDC / NIOSH). Retrieved 2026-05-21: https://www.cdc.gov/niosh/docs/2018-155/default.html
permeation
Chemical passes through intact material over time.
SourceNIOSH — Personal protective equipment for chemical, biological, and radiological hazards (CDC / NIOSH). Retrieved 2026-05-21: https://www.cdc.gov/niosh/docs/2018-155/default.html
degradation
Physical change reducing CPC effectiveness.
SourceNIOSH — Personal protective equipment for chemical, biological, and radiological hazards (CDC / NIOSH). Retrieved 2026-05-21: https://www.cdc.gov/niosh/docs/2018-155/default.html
skin absorption hazard
Chemical enters through intact skin.
SourceNIOSH Pocket Guide to Chemical Hazards (CDC / NIOSH). Retrieved 2026-05-21: https://www.cdc.gov/niosh/npg/
fit test
Required program element for tight-fitting respirators.
SourceOSHA — Personal protective equipment (PPE) overview (U.S. Department of Labor / OSHA). Retrieved 2026-05-21: https://www.osha.gov/personal-protective-equipment
IDLH atmosphere
Requires SCBA; no APR.
SourceNIOSH Pocket Guide to Chemical Hazards (CDC / NIOSH). Retrieved 2026-05-21: https://www.cdc.gov/niosh/npg/
encapsulating suit
Level A garment sealing responder inside.
SourceNIOSH — Personal protective equipment for chemical, biological, and radiological hazards (CDC / NIOSH). Retrieved 2026-05-21: https://www.cdc.gov/niosh/docs/2018-155/default.html
splash protection
Level B/C garments resisting liquid splash.
SourceNIOSH — Personal protective equipment for chemical, biological, and radiological hazards (CDC / NIOSH). Retrieved 2026-05-21: https://www.cdc.gov/niosh/docs/2018-155/default.html

Sequences · 2

Personal Protective Equipment (PPE) — Put these awareness-level steps in a logical order.
Learning objectives — Order these chapter objectives from first recognition steps toward notification and handoff.