Development of criteria for control of woodworking operation.

Details

• Personal Author:
  Hampl V
• Description:
  Summary and Recommendation: By summarizing the information and observations reported here, it can be seen that: 1. Adverse health effects, such as skin and/or respiratory diseases, have been confirmed to be associated with some native American soft and hardwood species. 2. A higher risk of developing cancer among wood workers has been reported in the literature. The higher cancer evidence is generally associated with hardwood. 3. The approximate number of production wood workers affected is 300,000. 4. Regardless of production variety, the same or similar working machinery is used for similar wood working process. 5. Wood dust, originated by wood working process, is emitted at high velocity by moving or spinning machinery component. Investigation of wood dust origination mechanism was beyond the scope of this study. 1. The primary method of controlling wood dust emission is local exhaust located directly on wood working machinery or at a close distance. The local exhausts are either retrofits on older wood working machinery or a built-in type installed by the manufacturer on new wood working machinery. 2. The local exhaust, located close to the emission source, seems to control wood dust relatively well - typical examples are: planers, jointers, saws, etc.) However, if for some reason the exhaust hoods are not (or cannot be) as close or designed as to break or affect dust flow patterns, visible wood dust emission was observed escaping into the work space. Typical examples: sanders, shapers, routers. 3. Despite the use of existing ventilation systems, hardwood dust emission levels reported were generally found to be above the TLV standard limit of 1 mg/m3 adopted by ACGIH (1981) namely in sanding, shaping and routering areas. Wood dust can be classified as both respirable or non-respirable. However, the majority of emissions is non-respirable (emission particle size 10 m). 4. The lowest "non-hazardous" wood dust level has not been determined by NIOSH. The identification of the wood dust level, which should be achieved, apparently will result from DRDS and DSHEFS investigations presently in progress. These studies have not been completed. 5. The wood working operations which appear to need improved controls are (in descending priority research need): belt sander, disc' sander, hand sander, shaper, router, some types of saws. Based on this summary, it is recommended to: 1. Identify the lowest wood dust level which should be achieved. 2. develop a project investigating improvement of existing control technology, or development of new techniques where the control was identified to be poor, namely at disc sanders and belt sanders. Final goal of this project should be: 1. Development of models of wood dust origination mechanisms at selected wood working machinery. 2. Development of criteria for wood dust control for selected wood working machinery. 3. Proposal of design parameters for new or existing control technology.
• Subjects:
  Accidents, Occupational Air Pollutants, Occupational Air Pollution, Indoor Environmental Exposure Manufacturing And Industrial Facilities Occupational Health Plastics Polystyrenes Preceptorship Safety Styrene Ventilation

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• Keywords:
  Cancer Control-technology Dust-control Dust Exposure Dust Particles Dusts Exhaust Ventilation Machine Operation Morbidity Rates Mortality Rates Power-tools Protective Materials Pulmonary System Pulmonary System Disorders Respirable Dust Respiratory System Disorders Risk Factors Skin Diseases Wood Wood Dust Wood Dusts Wood Products Woodworkers Woodworking Woodworking Equipment Woodworking Industry Work Environment Workers

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• Publisher:
  National Institute for Occupational Safety and Health
• Document Type:
  Text
• Genre:
  Other
• Place as Subject:
  Ohio ; OSHA Region 5
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  DPSE - Division of Physical Sciences and Engineering
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1-46
• NIOSHTIC Number:
  nn:20050482
• 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, 1982 Jul; :1-46
• Federal Fiscal Year:
  1982
• Peer Reviewed:
  False
• Source Full Name:
  National Institute for Occupational Safety and Health
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:cdd9d97f9d1c90c7d271f4b9619972780095ad88d5a7f568781a930e90e34dcba1a265ac929b1eeb89a3d5e6b91274253cfd058e524fd7bfaa6d98f718cea72c
• Download URL:
  https://stacks.cdc.gov/view/cdc/181720/cdc_181720_DS1.pdf
• File Type:
  [PDF - 14.39 MB ]