The auditor should assess whether the organization's planned action (using masks in case of dust extraction failure) is both implemented and effective. This aligns with ISO 45001 requirements to ensure that control measures are functional and meet the intended objectives.

Clause 8.1.2 (Hierarchy of Controls):The use of PPE, such as masks, is considered a last resort in the hierarchy of controls. The organization must demonstrate that the measure is:

Implemented (e.g., PPE is available and workers are trained to use it).

Effective (e.g., masks provide adequate protection against dust).

Analysis of Options:

A. Advise that the factory should cease operations if the dust extraction equipment malfunctioned.While ceasing operations may be a necessary control in extreme situations, it is not a practical or realistic recommendation unless a high-risk scenario cannot be otherwise managed.

B. Ask the OHSMS Manager to confirm regulatory compliance.Regulatory compliance is important but does not fully address the requirement to ensure the action is effective.

C. Seek evidence that the response action is both implemented and effective.This is the most appropriate response. The auditor must verify implementation and effectiveness to determine conformity.

D. Suggest increasing maintenance checks.Maintenance is important for preventing equipment breakdowns, but this option does not address the immediate audit finding about the adequacy of response actions.

ISO References:

Clause 8.1.2: Emphasizes applying the hierarchy of controls effectively.

Clause 9.1.1: Requires monitoring and measuring controls to ensure effectiveness.