HUMAN FACTORS EVALUATION OF THE ADJUSTABLE HARNESS BUCKLE DESIGN MODIFICATION TO THE C4 RESPIRATOR

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Authors
  1. Angel, H.A.
  2. Kumagai, J.K.
Corporate Authors
Defence and Civil Inst of Environmental Medicine, Downsview ONT (CAN);Humansystems Inc, Guelph ONT (CAN)
Abstract
A Human Factors Field trial was conducted to determine the impact of a modification of the Canadian C-4 respirator harness on user comfort, usability and compatibility with other head borne equipment. Thirteen subjects participated in a battery of Human Factors tests to assess; fit, adjustability, donning and doffing times, and clothing and equipment compatiblity. Data collection included questionnaires, focus groups, performance measures and Human Factors observers' assessments. The modification to the lower lug did not adversely affect fit or equipment, clothing or weapon compatibility. While donning times were not significantly slower than the unmodified mask subjects felt the harness modification allowed for faster and easier fit adjustments. Subjects also believed that the durability of the adjustable mask lug would e improved but not significantly over the In-service system. The design modification may reduce the strain on the lower mask lugs but this alone may not solve the problem. A critical examination of field storage and donning/doffing procedures will be required to identify other factors.
Report Number
DCIEM-98-CR-31 — Contractor Report (Final)
Date of publication
31 Mar 1998
Number of Pages
41
DSTKIM No
98-02821
CANDIS No
509671
Format(s):
Hardcopy;Document Image stored on Optical Disk

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