Protective clothing must be worn whenever the wearer faces potential hazards arising from chemical exposure. Some examples include : Emergency response, Chemical manufacturing and process industries, Hazardous waste site clean up and disposal, Asbestos removal and other particulate operations, Agricultural application of pesticides.

1. Presented By:- Amal Ray
Roll No:-02
Stream:-MTT
GUIDED BY-Sajal Burman
GETTS, Serampore

2. Protective clothing must be worn whenever the wearer faces
potential hazards arising from chemical exposure.
Some examples include :
• Emergency response,
• Chemical manufacturing and process industries,
• Hazardous waste site clean up and disposal,
• Asbestos removal and other particulate operations,
• Agricultural application of pesticides.

3. Performance Requirements for
Chemical Protective Clothing
(CPC)
•Chemical Resistance:
•Durability
•Flexibility
•Temperature Resistance
•Service Life
•Cleanability
•Design
•Size
•Color
•Cost

4. Levels of Chemical Protection
In Hazardous Material operations there are four levels
of protection.
•Level A
•Level B
•Level C
•Level D

5. Level A
Level A equipment consists of:
•Positive-pressure, self-contained
breathing apparatus (SCBA)
•Gas-tight suit
•Chemical-resistant inner and
outer gloves
•Chemical-resistant boots with
steel toe and shank.

6. Level A
Level A provides the highest level of skin and respiratory
protection available. This type of protection must be gastight,
vapor-tight and splash resistant. It is worn when
there is a possible threat to life and health, such as during
spill response and cleanup.
Level A is used when:
•Conditions are unknown
•The hazardous substance has been identified and requires the
highest level of protection for skin, eyes, and respiratory system
•Operations are being conducted in confined, poorly ventilated areas
•Work function involves a high potential for splash, immersion or
exposure to unexpected skin hazards .

7. Level B
Level B equipment consists of:
•Positive-pressure SCBA
•Chemical-resistant suit
•Chemical-resistant inner and outer
gloves
•Chemical-resistant boots with
steel toe and shank

8. LEVEL B
Level B offers protection from chemical splash, but does
not prevent exposure to gases or vapors. As with Level A,
an SCBA is used for respiratory protection. The CPC may
or may not be completely encapsulating, since a lower level
of skin protection is required .
Level B protection is used when:
•Air contaminants are unknown
•Air contaminants have been identified and the criteria for using
APRs are not met
•IDLH air concentrations exist
•The atmosphere contains less than 19.5% oxygen
•Direct contact does not pose a severe skin hazard

9. Level C
Air-purifying respirator, chemical
protective clothing, gloves, boots,
and hard hat.

10. LEVEL C
Level C features the same type of clothing as Level B, but
has a lower level of respiratory protection. An air-purifying
respirator is used in place of an SCBA .
Level C protection is used when:
•Criteria for the use of APRs (air-purifying respirators) are met
•Air contaminants have been identified and concentrations
measured
•Direct contact does not pose a skin hazard

11. Level D
Chemical-protective
clothing, boots, gloves, and
hard hat.

12. LEVEL D
Level D offers the lowest level of protection and is used
when no potential or actual hazard exists. It consists of a
normal work uniform (long sleeve coveralls, safety shoes,
goggles, etc.).
Level D protection is worn when:
•Atmosphere contains no known hazards
•Work functions precludes the potential for unexpected
exposure to hazardous levels of any substances

13. Penetration – defined as the bulk flow of a chemical
through the protective material.
Permeation – the diffusion of a chemical on a molecular basis
through chemical protective clothing.
Degradation – a change in the physical properties of the
material as a result of adverse effects of the chemical.

14. Breakthrough Time – the time it takes the chemical to pass
through the protective material until it is first detected by an
analytical instrument.
Permeation Rate – the mass flux (rate in mass per unit area per
unit time) of the chemical through the protective material once
it has broken through.

15. The National Fire Protection Association (NFPA) has devised
performance manufacturing standards for CPC.
NFPA 1991, Standard on Vapor-Protective Suits for Hazardous
Chemical Emergencies covers gas-tight suits.
NFPA 1992, Standard on Liquid Splash-Protective Suits for
Hazardous Chemical Emergencies covers splash-protective
garments.
NFPA 1993, Standard on Support Function Protective Garments for
Hazardous Chemical Operations covers splash-protective garments.
NFPA developed these standards to provide users with information
on suit integrity, resistance to chemicals and flame, durability and
function of components.
Garments that meet the NFPA requirements are approved and
marked with a Safety Equipment Institute (SEI) label.

16. 1. Anderson, K. J., and J. G. Johnson (eds.), Chemical Protective
Clothing, Vol. 1, American Industrial Hygiene Association, Akron,
OH, 1990.
2. “Focus On Protective Clothing,” Applied Industrial Hygiene, 4
(1), January 1989, pp. R1–R5.
3. Forsberg, K.; and S. Z. Mansdorf, Quick Selection Guide To
Chemical Protective Clothing, 1st. ed., Van Nostrand Reinhold,
New York, 1989.
4. Roder, M. M., A Guide for Evaluating the Performance of
Chemical Protective Clothing, National Institute for Occupational
Safety and Health, Cincinnati, 1990.
5. Sabatino, J., “Dress For The Party (Selection Of Personal
Protective Equipment),” Environmental Waste Management
Magazine, 8 (6), June 1990, pp. 8–10.

17. THANK YOU