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           TG No. 144                                                                  August 1987

           2-6.  DRYING (*C'41UCIIOR ana, controo.

                a. Since ventilation In drying areas Is usually very poor, sampling must
           be performed to determine the air concentrations of the solvents when
           personnel are working in these areas.
                b. HDI in the PUP does not present a health hazard after the paint has
           cured, unless exposed to heat sufficient for thermal decomposition of the
           coating.

           2-7.  GRINDING AND SANDING (,   ecoomilion).

                a. Grinding or sanding painted surfaces can expose personnel to--

                    (1) hazardous concentrations of lead, zinc, copper, tin, or chromium
           VI dusts from primers or paints, and

                    (2) noise and eye hazards associated with grinding.

                b. There is no expected exposure from solvents or HDI.

           2-8.  GRINDING AND SANDING                and conirot).

                a. Atmospheric sampling of particulates should be conducted to determine
           exposure levels. High efficiency air purifying respirators should be used
           when grinding or sanding on painted equipment.
                b. Noise readings should be taken during the operations to determine
           exposure levels. Hearing protection should be worn and the area posted as
           noise hazardous if noise levels exceed 85 dBA.

                c. The potential for eye injuries exists during these operations and
           protective eyewear should be worn. The area should be posted as an eye
           hazardous area.

           2-9.  WELDING AND CUTTING                    Toxic gases, vapors, and metal fumes
           are released when welding or cutting is performed on painted metal. Depending
           on the types of coatings, these gases may include carbon monoxide, cyanides,
utting on CARC-coated metal
           is prohibited because significant quantities of isocyanate may be released,
           unless the coatings have been removed down to bare metal.
           2-10.   WELDING AND CUTTING (e,-aiiialion and controls). When welding or cuttin4
           painted surfaces, sand or grind down to the bare metal an area 4 inches on
           either side of where the heat is applied. If a painted surface is on the
           other side of the weld spot, it must also be removed. In some operations,
           local exhaust ventilation may be used to remove the fumes and gases.


                                                      2-4



                                                                             r) c 0
Box ID = BX000000
Unit = VII CORPS       
Parent Organization = ARCENT          
Folder Title = PORT OPERATIONS CARC PAINTING POLICY                                                            
Subject = ARMY REGULATION 11-34 (RESPIRATORY PROTECTION PROGRAM
Document Number =        103
Image file name = 00000121.tif

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