Ventilation for Painting in Enclosed Spaces Daniel O. Chute, CIH, CSP BSI EHS Services And Solutions Reston, Virginia Daniel.Chute@bsigroup.com 703-689-9482 2018 MCA Annual Seminar Nashville, TN July 29 – August 1, 2018
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Ventilation for Painting in Enclosed Spaces NSRP RISK MANAGEMENT PANEL PROJECT, 2012-456 Background Ventilating Shipboard spray painting with portable blowers is problematic Many coatings systems have reactant materials with the low exposure limits, so control to applicable limits in these conditions can be especially difficult Without good sampling information, it is difficult to ensure that the respirator is providing adequate protection for the broader range of potential airborne contaminants in these situations. Air sampling for these components is technically challenging/expensive for individual yards. A panel project with industry-wide participation would provide representative data that may be used by all shipyards to ensure current knowledge and application of best practices for health and safety management 3
Ventilation for Painting in Enclosed Spaces Work included the Surface ships and submarines
Ventilation for Painting in Enclosed Spaces Work included the Brush and spray applications
Ventilation for Painting in Enclosed Spaces Work included the Ships afloat and subsections under construction
Ventilation for Painting in Enclosed Spaces Work included Small tight compartments the
Ventilation for Painting in Enclosed Spaces Work included the Large enclosed blast and paint facilities 8
Ventilation for Painting in Enclosed Spaces the
Ventilation for Painting in Enclosed Spaces the
Ventilation for Painting in Enclosed Spaces Shipyard Participants BAE Southeast Jacksonville, FL Huntington Ingalls Industries Newport News Shipbuilding Newport News, VA the NASSCO San Diego, CA Norfolk Naval Shipyard Portsmouth, VA Assistance with technical research, data analysis and periodic reviews Navy and Marine Corps Public Health Center, Portsmouth, VA
Ventilation for Painting in Enclosed Spaces Project Overview Shipboard painting often done in tight enclosed spaces. The work is difficult to adequately ventilate for: Effective control of visibility, Flammability and health hazards the This is due to: Irregular space configurations, Limited access and egress A satisfactory staging area for fans and blowers A variety of paint application equipment and methods A complex variety of paint formulations and potential airborne contaminants Work will frequently use moveable temporary shipboard ventilation systems
Ventilation for Painting in Enclosed Spaces the Moveable temporary shipboard ventilation systems 13
Ventilation for Painting in Enclosed Spaces Project Overview Fully enclosed blast and paint facilities have also been constructed in some shipyards. the
Ventilation for Painting in Enclosed Spaces Project Overview Spray application • Requires continuous attention to the control of the work area and airflow volumes. • May produce reactant materials with very low exposure limits. the
Related Project Noise Control for Portable Ventilation Blowers the
Ventilation for Painting in Enclosed Spaces Project Goals and Objectives A. Define representative exposure conditions and control challenges encountered in effectively ventilating shipyard painting operations B. Collect representative air samples to define actual exposure conditions the and effective control practices available to shipyards under several different combinations of coating application, space configuration and ventilation use. C. Prepare and present a report describing the areas evaluated, materials and equipment used and comparing the air sampling results to applicable Occupational Exposure Limits as a measure of effectiveness
Ventilation for Painting in Enclosed Spaces Sampling Summary 1-Butanol (n-Butyl Alcohol) Titanium Dioxide m-XDA the Total Particulates Xylene Ethyl Benzene
Ventilation for Painting in Enclosed Spaces Coatings Applied the FastClad Intershield 300V SeaGuard 5000
Ventilation for Painting in Enclosed Spaces Coatings Applied the
Ventilation for Painting in Enclosed Spaces Coatings Applied FastClad the
Ventilation for Painting in Enclosed Spaces Coatings Applied the Intershield 300V
Ventilation for Painting in Enclosed Spaces Coatings Applied SeaGuard 5000 the
Ventilation for Painting in Enclosed Spaces Coatings Applied the
Ventilation for Painting in Enclosed Spaces Coatings Applied the
Ventilation for Painting in Enclosed Spaces Ventilation in Use the • Flexible exhaust duct 26 • Ship subsection in large enclosed, ventilated paint/blast facility
Ventilation for Painting in Enclosed Spaces *Following results reported directly to Shipyard Point of Contact the *Data is “sanitized” for presentation and analysis
Ventilation for Painting in Enclosed Spaces Field Work in Each Location •Three days on site • Two days of Full Shift Air Sampling (Solvents/Solids) a) Description of space or compartment h) Description of ventilation system(s) in to be painted use b) Dimensions and volume of affected i) Airflow velocity (fpm) and volume (cfm) area measured in the affected areas being the painted c) Coating systems being applied j) Airborne contaminant measurements, both in laboratory reported units (ppm d) Coating application method or mg/m3 of air, etc…) and, where possible, expressed as a percentage of e) Number of painters in the affected applicable Occupational Exposure Limit, space such as PEL or TLV. f) Description of tools and equipment in k) Other work, activity or conditions in the use vicinity of painting that may affect the measurement or later application of these results. g) Personal protective equipment in use
Ventilation for Painting in Enclosed Spaces Organic Vapor Passive Air Monitoring Badges Active Monitoring for Particulates the Organic Vapor Passive Air Monitoring badge uses a single charcoal sorbent wafer for easy collection of organic vapors with analysis by gas chromatography.
the Multi-Function Ventilation Meter
Coating Products Applied Personal or Area Sample each contaminant tested Exposure Monitoring for Result above or below Air fixture/inlet in work * = Ceiling Limit TWA Notes and comments Description of Space OSHA PEL TWA for Volume of Affected Air monitoring result Ventilation Methods Application method Number of painters Estimated Size or Duration, Minutes PEL (8 hr) (+)or(-) Title Description Airflow in cfm Space in ft3 ACGIH TLV Entry No. area NO/Side Large, Sealed Ship Intershield Total Perimeter 368 15mg/m 3 30 Subsection 600,000 6 Spray Personal 1.7 1* 1.3 (-) Walls 9750 Blast & Paint Mixer 300V Particulate Push Pull Only Facility Open Top, LET Tank, Removed Brush/ 6" 31 LET Tank 200 1 F150 1-Butanol Personal 4.3ppm 110 100ppm 20ppm 1 (-) LEV 600 from Ship, NR Roll FlexDuct Painted in Shop Open Top, LET Tank, Removed Brush/ 6" 32 LET Tank 200 1 F150 1-Butanol Area 13ppm 111 100ppm 20ppm 3 (-) LEV 600 from Ship, NR Roll FlexDuct Painted in Shop the Open Top, LET Tank, Removed Brush/ 6" 33 LET Tank 200 1 F153 1-Butanol Personal 4.9ppm 322 100ppm 20ppm 3.3 (-) LEV 510 from Ship, NR Roll FlexDuct Painted in Shop Open Top, LET Tank, Removed Brush/ 6" 34 LET Tank 200 1 F153 1-Butanol Area 8.1ppm 320 100ppm 20ppm 5.4 (-) LEV 510 from Ship, NR Roll FlexDuct Painted in Shop New 0.1ppm Construction *0.15pp 6" Spray 35 VOID 175 2 Spray FastClad m-XDA Personal 0.15ppm 17 none Ceiling (+) LEV 106 Ship m FlexDuct er Limit Subsection - IN New 0.1ppm Construction 6" 36 VOID 175 2 Spray FastClad m-XDA Personal <0.06ppm 17 none Ceiling *<0.06 (-) LEV 106 Ship Helper FlexDuct Limit Subsection - OUT 1*: 2013 ACGIH TLV, Appendix B, 3mg/m 3 Respirable, 10mg/m 3 Inhalable. Not compatible with OSHA FIELD TEST DATA 31
Ventilation for Painting in Enclosed Spaces Findings Figure 8: Range of Volume - Enclosed Shipboard Ventilated work areas tested ranged from 150 • Ventilated Spaces ft3 to 600,000 ft3; A 4000-fold size difference! 3200 3000 Control of airborne contaminants within OSHA • PEL limits is difficult- but often achievable Cubic Feet 1800 2000 1600 Respirators, personal protective clothing and • equipment were observed to be used 1000 the effectively where needed to control painters’ exposure below applicable OSHA limits 175 200 200 150 175 0 1 2 3 4 5 6 7 8 Portable ventilation blower and flexible • 150 175 175 200 200 1600 1800 3200 Range of Volume - ductwork performance was highly variable Size of Ventilated Spaces Fixed ventilation systems in enclosed blast and Shipboard Ventilated Spaces • paint buildings were observed to be more effective in preventing outdoor emissions than controlling interior breathing zone exposures * This excludes the Facility with 600,000 cubic feet of ventilated area.
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