Page 12 - Combined_3_OCR

Work should be scheduled or arranged so as to minimize the exposure
of personnel to spray mist or particles downwind from the spray
operation.

Personnel with past medical histories of respiratory problems
should not be allowed in the spray vicinity. If inhaled, polymeric
isocyanate vapors or suspended particles or mist can cause damage to
mucous membranes. Excessive inhalation of polymeric isocyanates
is reported to cause asthma-type reactions. In severe cases, oxygen
may be required; however, withdrawal to fresh air will generally
relieve the symptoms.

Safety goggles should be worn at all times. If the eyes are exposed
to polymeric isocyanate, flood with water for 15 minutes and secure
medical attention.

Operators should wear protective gloves and rubber aprons or
rubber clothing while spraying. If the body is exposed to the
polymeric isocyanate or the spray, wash immediately with large
quantities of soap and water. Residual isocyanate can be neutra­
lized by flushing with isopropyl or ethyl alcohol.

Care should be taken to bleed pressure from hoses whenever dis­
connecting .

Do not allow smoking or open flames in the immediate vicinity of
the spray area. Use only air-driven or explosion-proof equipment
or lighting in the spray area. Although the spray components have
high flash points, finely divided spray particles can become a fire
hazard.

Nitrogen padding pressures on drums must not exceed 3 psi. A
drum is not a pressure vessel and can rupture if over pressurized.
The use of a pressure relief valve is recommended.

September 11, 1970