Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content

NIOSHTIC-2 Publications Search

Search Results

Some observations on frequency of respirator fit tests.

Authors
Johanson-RE; Morgan-MS
Source
Am Ind Hyg Assoc J 1984 Feb; 45(2):134-135
NIOSHTIC No.
00169527
Abstract
A study of the frequency of respirator fit testing necessary to detect respirator failure was conducted. The study was designed to test the null hypothesis that the results of failure tests over time would be random versus the alternative hypothesis that fit test failure rates would show either a positive or negative trend. Data were selected from the results of a continuing fit test program at a large industrial facility in which the MSA Ultra View, a fullface air purifying respirator, was used. A total of 11,086 fit tests were conducted using a test aerosol of dioctyl-phthalate. Adequate fit was defined as a measured penetration of 1.0 percent or less. The overall failure rate on initial testing was 1.8 percent. Of the individuals who passed the initial test, 1,968 were given a second respirator fit test 0 to at least 36 months later. The failure rates decreased with time, the highest failure rates 3.3 and 3.6 percent occurring within the first 6 and 12 months, respectively. After 30 months, failure rates were 0. The overall failure rate was 1.2 percent, which differed from the initial rate at a level of significance between 0.2 and 0.1. The authors conclude that the passage of time does not appear to result in increased respirator fit failure rates. Although the null hypothesis cannot be definitely rejected, the results suggest a trend toward decreasing fit test failure with time. Respirator wearers apparently obtain a better fit as time progresses. Further studies with larger populations are required to confirm these findings.
Keywords
NIOSH-Publication; NIOSH-Grant; Personal-protection; Respiratory-protection; Worker-health; Control-methods; Respiratory-protective-equipment; Humans; Occupational-health
Contact
Environmental Health University of Washington Environmental Health Dept Seattle, Wash 98195
CODEN
AIHAAP
Publication Date
19840201
Document Type
Journal Article
Funding Amount
7294922.00
Funding Type
Grant
Fiscal Year
1984
NTIS Accession No.
NTIS Price
Identifying No.
Grant-Number-T15-OH-07087
Issue of Publication
2
ISSN
0002-8894
Source Name
American Industrial Hygiene Association Journal
State
WA
Performing Organization
University of Washington, Seattle, Washington
TOP