STSC Exam practice 2024 with verified solutions

Threshold Limit Value The amount of hazardous chemical exposure to which a worker can be exposed 45 minimum angle for rigging Point of Operation, Power Transmission Device, Operating Controls Fundamental Machine Areas Ergonomics Matching the task to the worker Irritants chemicals that will irritate various tissues (chlorine and ammonia) Sensitizers "allergens"; cause an allergic type of reaction due to the sensitivity from prior exposure Mutagens ethylene oxide, benzene, and hydrazine Teratogens cause damage or death to a developing fetus (thalidomide, dioxins, lead, and calcium) Point of Operation the area on a machine where work is performed Universal Precautions all human blood and body fluids are treated as if known to be infectious; protecting workers from exposure to blood and bodily fluids Hazard any real/potential condition that can cause injury; unsafe condition Risk probability that a substance/situation will produce harm under specified condition Risk Analysis process of identifying safety risk Risk Assessment process of determining the risk presented by the identified hazards Loss Control System Identify hazardous conditions, assess the risks, and establish effective risk control measures Aerosol Suspension of liquid or solid particles dispersed in air Mist Suspension of liquid particles in air formed by condensation from vapor or by some mechanical process Fume solid particle aerosol formed by condensation from the vapor state Smoke Aerosol formed from combustion of organic material Dust Particulate material generated by a mechanical process System Life Cycle concept, system development, production/deployment, and sustainment/disposal Inhaled, eye/skin contact (absorption), ingestion, and injected 4 major exposure paths for chemical compounds to enter the body Check Valve a device that prevents the back-flow of oxygen and acetylene Elimination, Substitution, Engineering Controls, Warnings, Admin Controls, PPE Most to Least Effective Control Methods Authorized Employee an employee who locks out machines in order to perform servicing/maintenance Affected Employee an employee whose job requires him to operate a machine on which servicing is being performed under lockout Attendant an employee assigned to remain immediately outside the entrance to an enclosed space to render assistance Effective Listening supervisor skill demonstrated through empathy, rephrasing, and repeating Safety Audit A methodical examination of a company's existing procedures and practices to determine if they comply with legal requirements, internal policies, and best practices Hot Work Program To establish fire safety controls for operations involving welding or cutting, especially those conducted in proximity to combustible materials, many firms implement procedures that authorize these operations only after certain safeguards have been implemented. These procedures are called: Type 1 Hard Hat has a full brim around the entire hat Type 2 Hard Hat has a short brim only in the front of t