Welding works need to be conducted.

EPI’s Permit to Work (PTW) system categorizes work activities based on risk levels to ensure safe execution and hazard control within the data center.

Welding operations involveopen flame, sparks, high heat, molten metal, and ignition sources, making them a high-risk activity.

In EPI safety doctrine,welding is explicitly classified under “Hot Work.”

Hot Work includes activities such as:

Welding

Cutting

Grinding

Brazing

Soldering

Flame use or spark-producing tools

Because of the fire ignition potential, aHot Work Permitis mandatory before welding can begin.

The Hot Work PTW ensures:

Fire watch personnel are assigned

Fire suppression systems are prepared or temporarily disabled with compensating controls

Surrounding area is inspected for combustible material

Correct PPE is used

Hot-work zoning, barriers, and extinguishers are in place

Post-work monitoring is performed

Therefore,Option D (A PTW is required for hot work)is the correct and EPI-aligned answer.

EPI DCFOM-Aligned Reference Concepts

The PTW system ensures hazardous activities are controlled.

Welding is classified as Hot Work.

Hot Work requires a dedicated PTW with fire-risk mitigation and supervisory approval.