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Safety Study of OSHA's (Occupational Safety and Health Administration's) Experimental Variance on Self-Tripping of Power Presses: Phase 1 - Volume 2.

PB87190591

Publication Date	1981
Personal Author	Salvendy, G.
Page Count	163
Abstract	Appendices to a report on the self tripping light curtain safety device for machine presses were presented, including a fault tree analysis, failure mode analysis, reliability formulae and probabilities, operation sequence of control relays, tables of raw production data, productivity data plots, a computer program for monitoring and recording physiological data, worker questionnaires, and physiological data plots. The analytical procedure and fault tree results of fault tree analysis were described, based on system components. Safety was differentiated into self tripping safety (probability that the press will not operate while the curtain is obstructed) and guard safety (probability that the press will stop operating when the curtain is broken). Failure mode analysis included description of basic failure modes of light curtain unit electronic components, failure modes for relays, and failure rate data for each functional block.
Keywords	Presses Safety devices Reliability Failure Components Machines Hazards Protection Relays Operations Accident prevention Occupational safety and health Fault tree analysis Probability Electronic equipment
Source Agency	National Institute for Occupational Safety and Health
NTIS Subject Category	94H - Industrial Safety Engineering 94F - Tooling, Machinery, & Tools 45E - Graphics
Corporate Authors	Purdue Univ., Lafayette, IN. School of Industrial Engineering.; National Inst. for Occupational Safety and Health, Rockville, MD.
Supplemental Notes	See also Phase 1 Volume 1, PB87-189197. Sponsored by National Inst. for Occupational Safety and Health, Rockville, MD.
Document Type	Technical Report
NTIS Issue Number	198718
Contract Number	PHS-NIOSH-210-80-0034

Safety Study of OSHA's (Occupational Safety and Health Administration's) Experimental Variance on Self-Tripping of Power Presses: Phase 1 - Volume 2.

Safety Study of OSHA's (Occupational Safety and Health Administration's) Experimental Variance on Self-Tripping of Power Presses: Phase 1 - Volume 2.
PB87190591

Publication Date	1981
Personal Author	Salvendy, G.
Page Count	163
Abstract	Appendices to a report on the self tripping light curtain safety device for machine presses were presented, including a fault tree analysis, failure mode analysis, reliability formulae and probabilities, operation sequence of control relays, tables of raw production data, productivity data plots, a computer program for monitoring and recording physiological data, worker questionnaires, and physiological data plots. The analytical procedure and fault tree results of fault tree analysis were described, based on system components. Safety was differentiated into self tripping safety (probability that the press will not operate while the curtain is obstructed) and guard safety (probability that the press will stop operating when the curtain is broken). Failure mode analysis included description of basic failure modes of light curtain unit electronic components, failure modes for relays, and failure rate data for each functional block.
Keywords	Presses Safety devices Reliability Failure Components Machines Hazards Protection Relays Operations Accident prevention Occupational safety and health Fault tree analysis Probability Electronic equipment
Source Agency	National Institute for Occupational Safety and Health
NTIS Subject Category	94H - Industrial Safety Engineering 94F - Tooling, Machinery, & Tools 45E - Graphics
Corporate Authors	Purdue Univ., Lafayette, IN. School of Industrial Engineering.; National Inst. for Occupational Safety and Health, Rockville, MD.
Supplemental Notes	See also Phase 1 Volume 1, PB87-189197. Sponsored by National Inst. for Occupational Safety and Health, Rockville, MD.
Document Type	Technical Report
NTIS Issue Number	198718
Contract Number	PHS-NIOSH-210-80-0034