Dow FROTH-PAK Refill Systems - Manual (Page 14)

dow Building Solutions
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 pro-
tect the user and allow for the safe use and handling of the spray system .
Follow all applicable federal, state, local and employer regulations .
imPORTAnT: Proper Personal Protective Equipment (PPE) consists
of respirator, chemical resistant gloves, protective suit with hood/cover-
alls, and chemical goggles which must be worn by all participants prior
to the nitrogen and chemical valves being opened and during operation .
2 .1 Respiratory Protection
Workers must be respirator fit tested . Employers must have a
documented respiratory and PPE plan .
dO nOT breathe vapors or spray . use only in a well ventilated area
with visible air movement away from the point of application . 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 may differ in order to offer optimum protection to the
applicator from exceeding established exposure limits of isocyanate
and other components . Supplied air or an approved air purifying res-
pirator equipped with an organic vapor sorbent cartridge and a P-100
particulate filter may be required to maintain exposure levels below
aCGIH, OSHa, WEEl or other applicable limits . For situations where
the atmospheric levels may exceed the level for which an air-purifying
respirator is effective, use a positive-pressure, air supplying respirator
(air line or self-contained breathing apparatus) . The spray foam applica-
tor, 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, Dow always recommends using the highest level
of protection . use barrier tape and warning signs to mark the working
perimeter for respiratory hazards until 1 hour post spray .
• During application a minimum of 10 air Changes per Hour (aCH) is
required . Cross ventilation is recommended with negative pressure
in the spray area and exhaust to a secured empty area . a commercial
ventilation unit is recommended .
Section 2
• Continue to ventilate area for at least 1 hour after the job is completed
at no less than 10 aCH .
• Re-entry into an application site occurring less than 1 hour
post spray with proper ventilation requires the use of an approved
air purifying respirator equipped with an organic vapor sorbent
and a particle filter .
• Ensure ventilation hose output is in a safe and secure location that will
not be accessible to individuals without proper PPE in a 25 foot radius
and is not near an air intake for a structure . .
2 .2 Isocyanate-induced Occupational Asthma
Inhalation of vapors or mist at concentrations in excess of permissible
limits may result in an allergic respiration response and the develop-
ment of sensitization . Skin contact with diisocyanates may play a role
in respiratory sensitization . anyone who has been sensitized in the past
should not operate nor be in close proximity to the operation of these
systems as isocyante concentrations below exposure guidelines may
cause allergic respiratory reactions in individuals who are already sensi-
tized . asthma-like symptoms may include coughing, difficulty breathing,
and a feeling of tightness in the chest . Occasionally, breathing difficul-
ties may be life-threatening . Follow all ventilation and PPE guidelines .
2 .3 Safety Clothing
Personal Protection Equipment required when using
FROTH-PaK™ includes chemical goggles and chemical resistant
gloves preferably made from nitrile, neoprene, butyl or PVC . long
sleeves and pants or chemical resistant coveralls/protective suit with
hood should be worn . Shoe covers may also be worn .
2 .4 Skin Contact
avoid all contact with skin . May cause irritation or sensitization .
If skin contact occurs, remove contaminated clothing; carefully remove
uncured material without spreading; wash skin with soap and water . If
irritation occurs or persists, seek medical attention .
2 .5 Eye Contact
avoid all contact with eyes . Causes irritation . If contact with eyes
occurs, flush with clean, low pressure water for 15 minutes while
holding eyelids open . Seek medical attention .
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