Document gDk9zOV33Y8RQMJmGbQGreyve

HtrtLIH HPIU iHI-tir WUKP. PKnuitt UUiULLiNt Title: DPMC Industrial Health Work Practice Guideline For Inorganic Lead and/or Chromate Exposure PotentiaT Reviewed By: Maintenance North Maintenance South industrial Hygiene Developed: 4/84 Month/Year Application: DPMC Complex abrasive blasting operations PLAINTIFF'S EXHIBIT SH-3S37 A. Introduction The abrasive blasting of lead/chromate coated surfaces is to be minimized wherever practical. _A1 though J_ea^lxrx>iwte:J;!5U^ace ;^cp.atij^$^ha,ye ...not been...applied- on. equipment^ sincd^T975',Tpd^'cRromates . since maiht'^naince^''pers6'nn?er'Tifay^ encounter~~it'/ (/f Lead/chromate coatings' on equipment and pipeways that have been previously coated with a lead/chromate primer may have to be cleaned by either wet or dry blasting. If mechanical damage to the coating occurs causing the substrate to start rusting, spot mechanical surface preparation (no abrasive blasting) is all that is required. After surface preparation, a lead/chromate free aluminum epoxy mastic primer is applied. To control inhalation of airborne particulate, coated equipment and pipeways should be high pressure water blasted instead of abrasive blasted wherever possible. As a guideline abrasive blasting of a coated surface should only be done if 33% of the surface has rusted through the coating. New steel should always be abrasive blasted for mill scale removal and profile. All jobs that can be transported to the blasting yard should be done there. Unless prior authorization from Health and Safety is obtained, abrasive blasting of storage tanks is to be done with a silica free material. Thermal cutting of lead/chromate coated equipment should be.done only after the area of repair has been wet abrasive blasted 18" on each side of the cutting line. This 36" wet abrasive blasted band will reduce airborne particulate and will not damage the remaining coating because of the heat affected zone. Special precautions are required when dry blasting is performed. Health Hazard Precautions When Abrasive Blasting Or Thermal Cutting Is Performed RepetHiy^,exposure to dust and fume generated by abrasive blasting and them^Cutt?Mgt:';of'lead/chromat'e 'coate'd surfaces represents a potential heaTtfr^^fiaza'rcf.'''^'"Exposure" ' 'includes-'"the inhalation of ' airbonle partfclil'ate^'anlJ'ingestion of lead/chromate' or 'contaminated substances. Expos u re~fronf the; abrasive. bias lead/chroma tesurfacescan' result in excessive ^exposure upto'50 feet'downwind-of the' jot>: site./ WhefEthe-rabrasive. blastinq..on,thermal cutting of such-surfaces cannot be - - -----*nriLunn.- --------- - ---------------- ------ ------ - -------- fiiea. TI Tnes_a^g7l `,V 1111 ABS'003293 LAM 0315667.065  B. Re s p tJtol?SK>Pmtectfoff NIOSH approved air-supplied sandblast hoods are to be used for all abrasive blasting. Ancillary personnel involved in abrasive blasting operations are to wear high efficiency air-purifying respirators. The thermal cutting of coated surfaces (not previously blasted) requires the use of air-supplied respirators (low pressure airline type). Respirators are to be cleaned prior to reuse by either the Shell ^ Respirator Center or the contractor. C. Breathing Air-Supplied by Portable Compressors; CSS5^Stirs^a[re'. ttx meet theTol ToWing~minimunTreqUiremen --I --n r"` - ti ~i in n ~ - .......................... Exhaust stacks off engine to be at least 4 feet high (separation from air intake). . Compressor is to be located upwind of work activity. Compressor may have to be relocated if wind changes. A particulate filter is to be maintained in-line between compressor and mask. Periodic filter changing is required. '4\. Measurements for carbon monoxide are to be made at least weekly unless an in-line carbon monoxide analyzer is used. Measurements should be documented and maintain on file for future reference. Carbon monoxide levels above 10 ppm require corrective action to be taken. D. Protective'Work Clothing " T,, On days when abrasive blasting or lead burning is performed, clean protective work clothing is to be worn. a.. (JuleK^^tVeetrrcTottriTig'are to'Be protected ;7rpm"c'6nTalinii^fo^ 'CTbtff^coveralXsgTTfcer suils, ~6r disposable^coverafiVmaVTe~' u.sectr b* Work shoes may be permitted to be worn providing any outer contamination is removed daily by brushing. 2. Protedjiy.e^work clothing is to be removed at the completion of the Wor^shift'T' a* Potentially contaminated coveralls are to be disposed of or,, placed in a closed container and laundered by a qualified' outside service. b. Bags or containers of contaminated clothing are to be labeled as being contaminated with inorganic lead and/or chromium dust. ABS-003294 LAM 0315667.066 E. Hyai ene A On days when abrasive blasting or burning is performed, employees are to wash at breaks and at the end of the shift. & A suitable hand and face'washing facility including towels and soap is to be provided and used. 3y Tobacco and food are to be stored and consumed away from the J potentially contaminated work area. Food or tobacco should not be carried in the pockets of potentially contaminated coveralls. F. Training* h. All employees,., engaged ^ in^.v abras i ve bl astirm _.. 1 ead/cbromate containthateif'eq'uTpmerit^a r^'tT^recf'e i ve tfttea'stf`an^^at'trainfng. Training shall include:/ a:. The health hazards associated with lead/chromate. b Possible routes of entry. Ingestion Inhalation c. Proper use of respiratory protection. d. The importance of washing prior to handling foodstuffs. e. Location of air compressor. G. Exposure Monitoring Shell employees working in the potential exposure zone during the cutting or removal of lead or chromate may have to be monitored. Measured exposure levels exceed the OSHA limit for either lead or water-insoluable hexavalent chromium are required to be reported to Corporate Medical by Industrial Hygiene. Industrial Hygiene should be notified of jobs which are expected to last more than one workshift. H. Contractors * Shell is responsible for informing contractors of any potential hazards (of which it is reasonably aware) associated with lead/chromate-based coati ngs. rsTaye~/expected" to~Uti Vize procedures - which 'proyfde atjp.njpH3tK!?^Otrcti6fr!'#'Tbf: fr^' employees M inVoIvrecT~ with 3Up.u cati on /removaFof^IHese coaTfnqTT ~....... . Any^rrr^^TremgnT'r~~of '~the~ 'OSHA ' L'e_acT_ Standard thatj app 1y___to' ' the.' app i i cation^rOTOv a r of1"e acPITa se d coatings a re tFie' respori sTb i 1 i ty~jT~THe^ contractor; Upon request, Shell wilT'supply guidance to' tR'e'cdntractor' in'meeting these requirements. I. Environmental Residues from abrasive-blasting of lead/chromate-based coatings will be disposed of on-site; Environmental Operations is to be contacted. PJS3/46 4-23-84 ABS-003295 LAM 0315667.067