HVAC/R Strand 2 Study Notes: Safety, Tools, and Equipment (Learn-from-Scratch)

Hazard

Anything with the potential to cause harm, such as shock, burns, cuts, poisoning, or asphyxiation.

Severity

If a hazard goes wrong, severity refers to how bad the outcome will be.

Likelihood

Refers to how likely it is for a hazard to result in an incident given the conditions.

Engineering controls

Physical modifications or safety systems (like guarding and ventilation) that reduce exposure to hazards.

Administrative controls

Policies, procedures, and training meant to reduce risk through changes in how work is performed.

Personal Protective Equipment (PPE)

Safety gear designed to protect workers from hazards when risks cannot be eliminated.

Job Hazard Analysis (JHA)

A safety strategy that involves identifying tasks, hazards, and necessary controls before beginning work.

Lockout/Tagout (LOTO)

A safety procedure used to ensure that hazardous machines are properly shut off and not started again until maintenance is complete.

Eye protection

Safeguards such as safety glasses and face shields used to prevent eye injuries during work.

Cut-resistant gloves

Gloves designed to protect hands from cuts and lacerations during tasks involving sharp edges.

Hearing protection

Equipment like earplugs or earmuffs used to prevent hearing damage from high noise levels in the workplace.

Fire watch

Monitoring the work area for fire hazards, especially after hot work processes are completed.

Safety Data Sheet (SDS)

Document that provides information about the hazards, handling, and emergency measures for chemicals.

Inhalation

A route of chemical exposure where harmful vapors or fumes are breathed into the lungs.

Asphyxiation

Condition caused when oxygen levels are displaced by gases, potentially leading to suffocation.

Evacuation

Process of removing non-condensables and moisture from a sealed refrigeration system using a vacuum pump.

Refrigerant recovery

The process of extracting refrigerant from a system to prevent environmental release.

Ventilation

Process of moving air in and out of an area to reduce inhalation risk from chemicals or fumes.

Recycling refrigerant

Cleaning recovered refrigerant to remove impurities for reuse.

Stored energy

Energy retained in components like capacitors after power is turned off, which can cause shock.

Capacitor

An electrical component that can store energy and may remain charged even after disconnection.

Combustibles

Materials that can catch fire easily, such as insulation or cardboard, needing removal during hot work.

Cylinder handling

Guidelines for safely moving, storing, and securing gas cylinders to prevent accidents.

Micron gauge

Instrument used to measure vacuum levels during the evacuation of refrigeration systems.

Pressure testing

Procedure run to check a sealed system for leaks using an inert gas like nitrogen.

Pliers

Hand tools used for gripping, twisting, bending, and cutting wire or small components.

Flaring

The process of forming a widened end on tubing to create a seal with fittings.

Swaging

Expanding the end of a tube to allow it to fit over another tube for brazing.

Safety glasses

Protective eyewear designed to shield eyes from flying debris during work processes.

Deburring

Removing sharp edges or burrs from cut materials to prevent contamination and ensure proper fittings.

Hand tools

Basic tools like screwdrivers and wrenches used for manual labor tasks in HVAC/R.

Torque

The measure of the force that can cause an object to rotate about an axis, crucial for proper fastening.

Safety signals

Visual or audible cues used to alert workers to hazards or safety procedures.

Mechanical sympathy

Understanding how components fit and work together to avoid damaging them during assembly.

Housekeeping

Practices that maintain a clean and organized work environment to minimize hazards.

Documentation and labeling

Keeping accurate records and proper labels to communicate safety and troubleshooting information.

Electrical safety

Precautions taken to prevent electrical hazards like shock, short-circuiting, or fire.

Worker communication

Informing team members about potential hazards and ongoing work to prevent accidents.

Job safety planning

The process of identifying risks and control measures before starting a job.

OSHA regulations

Occupational Safety and Health Administration rules that ensure workplace safety.

Protective barriers

Physical divisions used to keep workers safe from danger zones while performing tasks.

Evaluating risk

The process of analyzing potential hazards to determine the likelihood and impact of their occurrence.

Tool inspection

Regular checks performed on tools to ensure they are safe and functional before use.

Calibration

The process of adjusting an instrument to ensure its accuracy and proper function.

Contamination control

Practices aimed at preventing dirt, debris, or moisture from entering HVAC systems to maintain integrity.

Respiratory protection

Equipment that safeguards the respiratory system from exposure to hazardous atmospheres.

Soldering

A process that uses a filler metal to bond two metals together at lower temperatures than brazing.

Health Hazards

Any substance or situation that poses a risk to health, requiring assessment and control.