Health Hazard Evaluation Report: HETA-84-117-1696: Martin Marietta Michoud Operations; New Orleans, Louisiana

Details

• Personal Author:
  Markel, Harry L. Jr. ; McConnell, Robert S.
• Corporate Authors:
  National Institute for Occupational Safety and Health
• Description:
  Workers at the Martin Marietta Michoud Operations Facility (SIC- 3769), New Orleans, Louisiana requested an evaluation of asthma and liver function test abnormalities among workers in the Thermal Protection System (TPS) insulation areas with potential exposures to diphenylmethane-diisocyanate (101688) (MDI) and solvents. Three cases of probable MDI induced asthma were identified. There was no detectable group decline in one second forced expiratory volume associated with MDI exposure. In general, environmental levels of MDI in company records were below 25ppm. Respiratory protection was worn by operators and sprayers where MDI was present. In the final assembly area 9 of 103 workers had abnormal serum liver enzyme concentrations. The authors conclude that it is probable that some employees developed asthma as a result of exposure to MDI. Recommendations include informing workers of possible health hazards, clearly indicating the 25 foot hazard radius to be avoided during processes using MDI, reducing the 20 parts per billion permissible exposure limit ceiling for MDI currently in use, transfer workers who have isocyanate provoked asthma to other areas of the facility, carefully investigating any cases of job related illness for possible additional cases, and developing and implementing a monitoring strategy.
• Subjects:
  Asthma Asthma, Occupational Digestive System Digestive System Diseases Enzymes Irritants Isocyanates Liver Lung Lung Diseases Occupational Health Respiratory System Respiratory Tract Diseases Safety Solvents

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• Keywords:
  Diphenyimethane Diisocyanate Enzyme-activity Guided Missile And Space Vehicle Parts And Auxiliary Equipment, Not Elsewhere Classified Hazard-Confirmed Hepatotoxcity Hepatotoxicity HETA-84-117-1696 Liver-damage Lung-disorders NIOSH-Author NIOSH-Health-Hazard-Evaluation NIOSH-Technical-Assistance-Report Organic-solvents OSHA Region 6 Pulmonary-system-disorders Respiratory-irritants

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• Series:
  Health Hazard Evaluation Reports (HHE)
• Subseries:
  Health Evaluation and Technical Assistance (HETA)
• DOI:
  https://doi.org/10.26616/NIOSHHETA841171696
• Publisher:
  National Institute for Occupational Safety and Health
• Document Type:
  Text
• Genre:
  Field Study
• Place as Subject:
  Louisiana ; OSHA Region 6
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  DSHEFS - Division of Surveillance, Hazard Evaluations, and Field Studies
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  21 pdf pages
• Contributor:
  Singal, Mitchell ; Robinson, Nola
• NIOSHTIC Number:
  nn:00163546
• NTIS Accession Number:
  PB87-105557
• Citation:
  Cincinnati, OH: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control, National Institute for Occupational Safety and Health, HETA 84-117-1696, 1986 May ; :1-19
• CAS Registry Number:
  4,4’-methylene diphenyl diisocyanate (CAS RN 101-68-8)
• Federal Fiscal Year:
  1986
• Peer Reviewed:
  False
• NAICS and SIC Codes:
  3769 - Space vehicle equipment, not elsewhere classified - (SIC)
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:0bf34d8e4c51e0ac2ad9534322e23e73e2127f1bcf967003620ae72427944ecb590ff60fa9070f976b7c93acd3360a31bf743aa1ecbbf160a3c6d1b017cd2562
• Download URL:
  https://stacks.cdc.gov/view/cdc/172194/cdc_172194_DS1.pdf
• File Type:
  [PDF - 4.00 MB ]