Safety Precautions; Safety Clothing; Respiratory Protection - DuPont FROTH-PAK Manual

Section 2

Safety Precautions

WARNING:
The Froth-Pak cylinders contain isocyanate, blowing agent and
™
polyols under pressure . Read and follow these instructions and the
Safety Data Sheets (SDSs) (formerly MSDSs or Material Safety Data
Sheets) carefully before use . The safety precautions and personal
protective equipment indicated below are designed to protect the
user and allow for the safe use and handling of the spray system .
Follow all applicable federal, state, local and employer regulations .
2.1 Safety Clothing (Personal Protective Equipment or PPE)
• Personal protective equipment (PPE) used
during the handling of Froth-Pak
products must at a minimum include:
– Protective clothing or impermeable
coveralls, such as a Tyvek
suit, including long sleeves (no skin
should be exposed)
– Chemical-resistant gloves that are
coated with nitrile, butyl rubber,
neoprene or PVC
– Goggles or safety glasses, unless using
a full-face respirator
– Proper respiratory protection, see section 2 .2
• PPE should be worn by:
– Applicator
– Anyone assisting applicator
– Other workers in the room within 25 ft of the applicator
– Anyone entering the spray area less than one hour post
spraying with proper ventilation
• If PPE is contaminated during application, properly discard and
replace immediately
• Do not consume or store food or tobacco in the work area .
Make sure to wash your hands and face before eating or
smoking after application .

2.2 Respiratory Protection

2.2.1 Personal Respiratory Equipment
DO NOT breathe vapors or spray . Workers must
be respirator fit tested per OSHA/CCOHS requirements .
Employers must have a documented respiratory and
PPE plan per OSHA/CCOHS requirements including
considerations for frequency of fit testing and health
exams . Depending on the area of spray, the amount
of foam being sprayed, the amount of ventilation and
the type of spray nozzle used, respiratory protection
6
foam
™
coverall
®
equipment may differ in order to offer optimum
protection to avoid exceeding established exposure
limits of the chemicals . Proper respiratory protection
options include:
– NIOSH-approved full-face or half-mask air-
purifying respirator with an organic vapor sorbent
and a P100 particulate filter
– For situations where the atmospheric levels may
exceed the level for which an air-purifying respirator
is effective at maintaining exposure levels
below ACGIH, OSHA, WEEL or other applicable limits,
use a positive-pressure, air-supplying
respirator (air line or self-contained breathing
apparatus) or supplied air .
– Change out respirator cartridges according to your
employer's change-out schedule (typically 8 hours or
end of shift)
– The spray foam applicator and anyone within
25 feet of the applicator, must use approved
respiratory protection .
– If there is ever a doubt as to the potential limits
for worker exposure, DuPont always recommends
using the highest level of protection .
2.2.2 Containment of spray zone
Use barrier tape and warning signs to mark the
working perimeter for respiratory hazards until at
least one hour after spraying has ended . Isolate
the spray area by shutting down the HVAC system
and sealing off any air intakes . If spraying outdoors,
ensure the barrier keeps others at least 25 feet away
from the spray area in all directions and use additional
barriers as needed to protect downwind areas .
2.2.3 Ventilation
During application a minimum of 10 Air Changes
per Hour (ACH) is required . Cross ventilation is
recommended with negative pressure in the spray
area . A commercial ventilation unit is recommended .
Ensure the exhaust from the spray area is sent to a
secured empty area with considerations for warning
signs, barrier for 25 feet of non-entry, wind, HVAC
systems, and other factors . Continue to ventilate the
area for at least 1 hour after the spray job is completed
at no less than 10 ACH . For further information on
cross-ventilation visit the US EPA website at
http://www . e pa . g ov/saferchoice/ventilation-guidance-
promote-safe-use-spray-polyurethane-foam-spf-insulation .