G60 Industrial Safety Protocols and Risk Assessment 4

Question 1

A torch operator discovers that a combustible gas detector has an expired calibration date. What should the operator do?

Accepted Answer

Take the detector out of service until it is recalibrated

Answer

An uncalibrated gas detector cannot provide reliable readings and must be removed from service to avoid false assurance of safety.

Question 2

Under the hierarchy of hazard controls, which option ranks BELOW engineering controls but ABOVE PPE?

Accepted Answer

Administrative controls

Answer

Administrative controls (procedures, training, work schedules) rank third in the hierarchy, between engineering controls and PPE.

Question 3

Which atmospheric condition, if identified during a pre-work survey, would PROHIBIT the issuance of a hot work permit?

Accepted Answer

Flammable vapor concentration at or above 10% LEL

Answer

OSHA and NFPA prohibit hot work when flammable vapor concentration equals or exceeds 10% of the LEL due to explosion risk.

Question 4

An incident investigation follows a 'near miss' during torch operations. What is the PRIMARY goal of such an investigation?

Accepted Answer

To identify root causes and implement corrective actions to prevent recurrence

Answer

Incident investigations aim to uncover root causes so systemic improvements can be made and future incidents prevented.

Question 5

What is 'residual risk' in the context of torch operation risk assessment?

Accepted Answer

The level of risk that remains after all controls have been applied

Answer

Residual risk is the remaining risk after controls are in place; it determines whether the work can proceed safely or requires additional mitigation.

(G60) Certificate of Fitness for Torch Use of Flammable Gases Practice Test