Welding Safety Regulations and Hazard Management

Vocabulary flashcards covering welding authorizations, medical exam frequency, safety re-testing, high-hazard welding conditions, fire assistance, ventilation, and electric shock protection.

Authorized Welding Personnel

Employees who hold a valid welder's license or a valid welder worker's license.

Medical Examination Frequency (Welders Under $50$ Years)

Mandatory medical examination required at least once every $3$ years for welders under $50$ years of age.

Medical Examination Frequency (Welders Over $50$ Years)

Mandatory medical examination required at least once every $3$ years for welders over $50$ years of age.

Arc Welding Safety Re-Testing Frequency

Required re-examination on safety regulations for arc welding conducted at least once every $2$ years.

Basic Welding Course High-Hazard Work Restriction

Prohibits conducting work with increased hazard under any circumstances during a basic welding course.

Welder's License Invalidity Conditions

Loss of validity occurring when the certificate of safety re-testing is missing or older than $2$ years, or when medical fitness is lost.

Pre-Welding Hazard Assessment

Evaluation required prior to starting welding outside approved workplaces to determine if welding and adjacent spaces (above, below, and beside) involve increased hazard.

Enclosed Space Isolation Transformer Rule

Safety prohibition against placing a $220\,V$ to $24\,V$ isolating transformer inside a dangerous enclosed space.

Work with Increased Hazard (General Definition)

Welding operations that carry an increased risk of injury, permanent health damage, fire, or explosion.

Work with Increased Hazard (Wet and Hot Environments)

Welding performed in wet, humid, or hot conditions where sweat or moisture significantly lowers the electrical resistance of human skin.

Work with Increased Hazard (Enclosed Spaces)

Welding tasks carried out inside enclosed and tight or narrow spaces.

Fire Assistance Patrol Requirement

Mandatory presence of a fire watch during welding work involving an increased hazard of fire or explosion.

Local Exhaust Ventilation Threshold

Mandatory implementation of local exhaust ventilation in enclosed and tight spaces whenever pollutant levels would exceed maximum permissible concentrations.

Air Quality Control in Enclosed Welding Spaces

Mandatory provision of local pollutant exhaust and supply of clean, treated air to keep pollutant levels below highest permissible limits when welding in containers and enclosed spaces.

External Workplace Pre-Operation Checks

Welder's mandatory check of all wall, ceiling, and floor penetrations, energy channel covers, unsealed pipe ends, and potential heat transfer to adjacent spaces before starting work outside a welding shop.

Electric Shock Prevention in Enclosed Spaces

Requirement during high-hazard electric shock work for the welder to wear no body-touching metal objects and stand on an electrically non-conductive mat.

Body Insulation in Enclosed Containers

Use of insulating mats and boards during welding inside enclosed containers to prevent any contact between the welder's body and metallic surfaces.