Operating Guide

Safety Precautions
WARNING:
The Froth-Pak
™
cylinders contain isocyanate, hydrofluorocarbon
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
™
foam
products must at a minimum include:
– Protective clothing or impermeable
coveralls, such as a Tyvek® coverall
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 requirements.
Employers must have a documented respiratory and
PPE plan per OSHA requirements including consider
ations 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 equipment
Section 2
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 respira-
tor 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.
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