Welding Hot Work Permit Safety Checklist (Free)

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24 critical items still open - these are the highest-risk gaps.

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Before work: equipment and gas

Welding machine inspected, cables and lugs undamagedCRITICALWork lead clamp attached close to the work, not through bearings or chainsElectrode holders and torches insulated and in good conditionGas cylinders secured upright with chains or stands and caps on when movedCRITICALFuel gas and oxygen cylinders separated or protected by a barrierCRITICALHoses and regulators checked for leaks and wearCRITICALFlashback arrestors and check valves fitted on oxy-fuel equipmentCRITICALFire extinguisher of the correct type within reach and chargedCRITICALGrounding and electrical supply inspected, no wet floors

Before work: people and PPE

Welder has current qualification and training for the taskWelding helmet with correct filter shade and clean lensCRITICALFlame-resistant clothing, gloves, boots and leather sleeves or apronCRITICALSafety glasses worn under the helmetHearing protection where noise levels require itRespiratory protection available for stainless, galvanized or coated materialsCRITICALScreens or curtains set up to protect nearby workers from arc flashFire watch assigned, trained and equippedCRITICAL

Ventilation and special materials

Local exhaust ventilation or fume extraction in use in enclosed areasCRITICALConfined space entry permit in place where the work is inside a vessel or tankCRITICALCoatings, paint and galvanizing removed from the weld zone or fume controls appliedCRITICALChromium, manganese or cadmium exposure considered for the base metal and fillerShielding gas leaks cannot displace oxygen in low spots or closed spacesCRITICAL

During work and after work

Fire watch stays in position during the work and watches for sparks below and on the other side of wallsCRITICALWork stops if conditions change, such as wind, flammable vapors or new combustiblesCRITICALFire watch continues for at least 30 minutes after hot work endsCRITICALArea inspected again, including adjacent rooms and floors below, before closing the permitCRITICALHot materials marked or protected so nobody handles themEquipment shut off, cylinder valves closed and hoses relievedPermit closed out and filed, with any incidents or near misses recorded

All critical items must be complete before hot work starts. Distances and fire watch durations shown follow common NFPA 51B guidance. Confirm against current regulations and your site rules.

Link permits to maintenance work orders

Optional: a short review of how to attach hot work permits to work orders in your ERP or EAM.

Optional. The tool and every export work without this. No spam.

How to use the checklist

Complete the first three groups before the arc is struck, and complete the last group during and after the job. Critical items are flagged, and any unchecked critical item is a stop. Print or export the checklist and attach it to the hot work permit, or load it into your maintenance or EHS work order. Keep completed copies with permit records for audits.

The rules behind it

NFPA 51B covers fire prevention during welding, cutting and other hot work, and OSHA 29 CFR 1910.252 sets general requirements for welding, cutting and brazing in general industry. Common elements are clearing or protecting combustibles within about 11 m (35 ft), assigning a trained fire watch, keeping extinguishers ready, and continuing the watch for at least 30 minutes afterward. Many insurers and sites require a longer watch or a final check several hours later.

Common mistakes

Hot work incidents tend to repeat the same patterns, and each one is on this list for a reason.

Ending the fire watch the moment the arc stops.
Ignoring combustibles on the other side of a wall or floor.
Using damaged cables or torches to finish a quick job.
Welding on or near containers that held flammable material.
Leaving cylinders unsecured or mixing oxygen and fuel gas storage.

Frequently Asked Questions

What is a hot work permit?

A hot work permit is a written authorization for welding, cutting, brazing, grinding or other work that creates sparks or flame outside a designated area. It records the location, the controls in place, the fire watch and the time window, and is closed out after the final check.

How long must a fire watch stay after welding?

NFPA 51B calls for a fire watch for at least 30 minutes after hot work finishes, and many sites and insurers require longer or add a later re-inspection. Smoldering fires can start well after the work. Follow the stricter rule on your site.

How far must combustibles be from welding?

A common requirement is 11 m (35 ft) from the work, unless the combustibles are moved, covered or shielded. Sparks can travel farther and through openings, so check below, above and on the other side of walls.

Does this checklist replace my site safety procedure?

No. It is a general starting point for welding and cutting. Your site rules, insurer, local regulations and the current edition of NFPA 51B and applicable OSHA or national standards take precedence. Adapt it for confined spaces and hazardous areas.

If you want hot work permits and inspections tied to maintenance work orders in your ERP or EAM, Netray can show how that workflow is usually set up.

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Welding Hot Work Safety Checklist (NFPA 51B Based)