STSC Exam Study Guide with Complete Solutions 100% Verified 2024/2025 Threshold Limit Value - Correct Answers The amount of hazardous chemical exposure to which a worker can be exposed 45 - Correct Answers minimum angle for rigging Point of Operation, Power Transmission Device, Operating Controls - Correct Answers Fundamental Machine Areas Ergonomics - Correct Answers Matching the task to the worker Irritants - Correct Answers chemicals that will irritate various tissues (chlorine and ammonia) Sensitizers - Correct Answers "allergens"; cause an allergic type of reaction due to the sensitivity from prior exposure Mutagens - Correct Answers ethylene oxide, benzene, and hydrazine Teratogens - Correct Answers cause damage or death to a developing fetus (thalidomide, dioxins, lead, and calcium) Point of Operation - Correct Answers the area on a machine where work is performed Universal Precautions - Correct Answers all human blood and body fluids are treated as if known to be infectious; protecting workers from exposure to blood and bodily fluids Hazard - Correct Answers any real/potential condition that can cause injury; unsafe condition Risk - Correct Answers probability that a substance/situation will produce harm under specified condition Risk Analysis - Correct Answers process of identifying safety risk 1 / 2
Risk Assessment - Correct Answers process of determining the risk presented by the identified hazards Loss Control System - Correct Answers Identify hazardous conditions, assess the risks, and establish effective risk control measures Aerosol - Correct Answers Suspension of liquid or solid particles dispersed in air Mist - Correct Answers Suspension of liquid particles in air formed by condensation from vapor or by some mechanical process Fume - Correct Answers solid particle aerosol formed by condensation from the vapor state Smoke - Correct Answers Aerosol formed from combustion of organic material Dust - Correct Answers Particulate material generated by a mechanical process System Life Cycle - Correct Answers concept, system development, production/deployment, and sustainment/disposal Inhaled, eye/skin contact (absorption), ingestion, and injected - Correct Answers 4 major exposure paths for chemical compounds to enter the body Check Valve - Correct Answers a device that prevents the back-flow of oxygen and acetylene Elimination, Substitution, Engineering Controls, Warnings, Admin Controls, PPE - Correct Answers Most to Least Effective Control Methods Authorized Employee - Correct Answers an employee who locks out machines in order to perform servicing/maintenance Affected Employee - Correct Answers an employee whose job requires him to operate a machine on which servicing is being performed under lockout
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