Chemical Protection Clothing Questions & Answers
How does a "Liquid-Splash Protective Suit" differ from a "Vapor-Protective Suit"?
A "Vapor-Protective Suit" shall be designed to provide the highest level of protection available against vapors, gases and liquids. The intent is that the suit be wor...
Chemical Protection Clothing Questions
& Answers
How does a "Liquid-Splash Protective Suit" differ from a "Vapor-Protective Suit"? -
answer A "Vapor-Protective Suit" shall be designed to provide the highest level of
protection available against vapors, gases and liquids. The intent is that the suit be worn
any time the chemical is present at or above the IDLH concentration. SCBA should be
worm on the inside of the suit.
A "Liquid-Splash Protective Suit" is designed to protect emergency response personnel
against exposure to specified chemicals in liquid splash environments during hazardous
chemical emergencies. It is not approved for protection against gases and vapors, and
should never be worn in place of a vapor-protective suit. They should never be worn if
the chemical is present at or above the IDLH concentration. Is often referred to as a
"splash suit." Notice that the word "splash" is in the title of the definition.
Under what conditions can "Support Function Protective Clothing" be worn? - answer
"Support Function Protective Clothing" is designed to provide only limited and short
term protection against liquid and powder chemical hazards only. They must never be
used for protection against vapors and gases, and never used in an environment where
the chemical is present at or above IDLH concentrations. This suit is essentially a cheap
throw-away version of a splash-protective suit. Some of the suits that meet the NFPA
Standard #1993 classification may be re-used a limited number of times before they
must be disposed of. Others are designed for one use only.
Support function protective clothing is very popular because they are low cost, totally
disposable, easy to don and doff, light weight and cooler to wear. They are often used
for hauling waste and other waste operations, repacking operations, sample taking, field
identification, some decon procedures and response team training. They can be
ordered to allow SCBA to be worm on either the inside or the outside. They may come
as one, two, or three-piece suits
The standard for support function protective clothing differs from the standard for liquid-
splash
protective suits in that primary suit materials may not meet the flame resistance
requirements and have reduced or different physical properties. They are also not
tested for and may not meet permeation resistance requirements.
What information is included in the "Technical Data Package" as specified in NFPA
standards 1991, 1992, and 1993? - answer 1991: The efficiency and performance of
the suit during permeation resistance tests must be documented in a user's "Technical
Data Package." This booklet must accompany every suit that earns the NFPA
certification. It must contain all of the data regarding the success or failure of
permeation to all parts of the suit.
, 1992: The efficiency and performance of the tests must be documented in a user's
"Technical Data Package."
It must contain all of the data regarding the success or failure of penetration to all parts
of the suit.
1993: The efficiency and performance of the tests must be documented in a user's
"Technical Data Package." This booklet must accompany every suit that earns the
NFPA certification. It must contain all of the data regarding the success or failure of all
parts of the suit.
What are some factors that affect work time when using CPC? - answer • Air supply
availability and consumption.
• Garment permeation or penetration by the chemical contaminants.
• Ambient temperature.
• Suit cooling supply.
• Time required to don CPC.
• Amount of physical work expected.
• Physical condition of the wearer.
• Travel time to the location.
How do you determine what type of CPC material is appropriate for a given chemical? -
answer Level A Ensemble.
A Level A Ensemble is to be selected when the greatest level of skin, respiratory, and
eye protection is required.
Level B protection should be used when:
• The type and atmospheric concentration of substances have been identified and
require a high level of respiratory protection, but less skin protection;
NOTE: This involves atmospheres with IDLH (immediately dangerous to life and health)
concentrations of specific substances that do not represent a severe skin hazard, or that
do not meet the criteria for use of air-purifying respirators.
• The atmosphere contains less than 19.5% oxygen;
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