| If |
Then |
| Changing site
conditions
indicate a change
in employee
exposure |
Review and adjust the level of
protection as appropriate |
| |
Note: |
|
| |
You may decrease the level of
protection when information
indicates this will not increase
employee exposure to safety or
health hazards |
| There is a
substantial
possibility that
skin absorption or
contact with a
hazardous
substance may: |
Use totally encapsulating chemical
protective (TECP) suits and make
sure they will protect employees
from the hazards |
| • |
Impair an
employee's
ability to
escape |
• |
Use, decontaminate, inspect,
and remove TECP suits from
service according to the
manufacturer's
recommendations |
| • |
Cause
immediate
serious
illness or
injury |
• |
Perform any TECP integrity
tests recommended by the
manufacturer and make sure all
TECP suits are capable of: |
| • |
Is an IDLH or
immediate
death hazard |
|
– |
Maintaining positive air
pressure |
| |
|
– |
Preventing inward test
gas leakage of more than
0.5% |
| |
Note: |
|
| |
Follow the manufacturer's
recommended procedures for
testing a TECP suit's ability to
maintain positive air pressure and
prevent inward gas leakage. Other
established test protocols for these
suits, for example, NFPA 1991 and
ASTM F1052-97, may also be used |
| There is a
substantial
possibility that
employee
exposure to
hazardous
substances will
either: |
Use a positive-pressure SCBA or an
airline respirator with an escape
SCBA |
| • |
Immediately
cause death,
serious
illness, or
serious injury |
• |
Protect air supply from
contamination and the entire
respirator system from physical
damage |
| OR |
|
|
|
| • |
Impair an
employee's
ability to
escape |
|
|
|