Chemical protective clothing standard test method development: part II. Degradation test method.

Details

• Personal Author:
  Berardinelli, Stephen P. Jr. ; Coletta, Gerard C. ; Mansdorf, S. Z.
• Description:
  Tests were conducted to evaluate the proposed American Society for Testing and Materials (ASTM) degradation test method and to recommend changes which would improve the method. The method as proposed provided for an initial screening for chemical protective clothing materials. This was the first in a triad of tests designed to determine resistance to degradation, resistance to penetration, and resistance to permeation. The test method called for measuring the thickness, weight, and elongation of fresh specimens of the candidate material that had not contacted the liquid chemical under study; measuring these properties of specimens that had been in contact with the test liquid; and comparing the results of the two measurements. Materials tested included polyvinyl-alcohol, polyvinyl-chloride, Neoprene, butyl, and Tyvek, and the test liquids were water, toluene (108883), methyl-ethyl-ketone (78933), hexane (110543), and hydrochloric-acid (7647010). Data from the seven laboratories completing the study indicated wide variability in all statistical parameters, with standard deviations well above generally accepted values for standardized testing. For thickness measurements, various approaches were used, leading to differing results. Weight measurements varied due to lack of specific directions, inconsistent drying, difficulty in specimen handling, and inconsistency as to whether only the contaminated section or the whole material sample was weighed. Specific difficulties arising from unclear instructions for elongation measurements were also noted. The authors conclude that the method is presently unacceptable, but that it does appear valuable because it permits the measurement of important physical properties, is relatively easy to perform, and does not need costly apparatus or manpower. Recommendations to make the results more comparable between laboratories were listed. [Description provided by NIOSH]
• Subjects:
  Laboratories Manufacturing And Industrial Facilities Occupational Health Personal Protective Equipment Protective Clothing Safety
• Keywords:
  Laboratory-testing Materials-testing NIOSH-Author Personal-protective-equipment Physical-properties Protective-clothing Screening-methods Testing-equipment
• ISSN:
  0002-8894
• Document Type:
  Text
• Genre:
  Journal Article
• Place as Subject:
  OSHA Region 3 ; West Virginia
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  DSR - Division of Safety Research
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  26-33
• Volume:
  49
• Issue:
  1
• NIOSHTIC Number:
  nn:00176665
• Citation:
  Am Ind Hyg Assoc J 1988 Jan; 49(1):26-33
• CAS Registry Number:
  Hexane (CAS RN 110-54-3) ; Hydrochloric acid (CAS RN 7647-01-0) ; Methyl ethyl ketone (CAS RN 78-93-3) ; Toluene (CAS RN 108-88-3)
• Federal Fiscal Year:
  1988
• Peer Reviewed:
  True
• Source Full Name:
  American Industrial Hygiene Association Journal
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:f3905d42e7c3a4f25dde21b76247b85a4959ef192d64b1dd20c9a6dafd67c53526ab141abb581aa8ff0e2f84b19df22d67c85c807fdfb1541e552d7aa9ae4ee3
• Download URL:
  https://stacks.cdc.gov/view/cdc/185449/cdc_185449_DS1.pdf
• File Type:
  [PDF - 1015.92 KB ]