Welding Fume Extraction Audit
Audit welding fume extraction at the hood, airflow, and filter level so you can catch weak capture, clogged filters, and unsafe setups before welding continues.
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Overview
This template is an inspection and audit form for welding fume extraction systems, with a focus on whether the hood is positioned correctly, airflow is strong enough to capture the plume, and filters are in acceptable condition. It is designed for local exhaust ventilation at welding stations, including fixed hoods, flexible extraction arms, and portable fume extractors.
Use it when you need a repeatable check of a specific welding station or area, especially before work starts, after maintenance, after a process change, or as part of a scheduled ventilation review. The form walks the inspector through inspection details, hood placement and capture zone, airflow and capture performance, filter condition and maintenance, and documentation and corrective actions. That structure helps you identify deficiencies that are visible at the point of use, such as a hood too far from the arc, a blocked opening, a damaged duct, a clogged filter, or a gauge that is outside the normal range.
Do not use this template as a substitute for a full industrial hygiene assessment when exposure concerns are broader than the local exhaust system itself, or when the process involves additional hazards that require separate controls. It is also not the right tool for general housekeeping-only inspections. If the system has failed capture, shows abnormal noise or vibration, or has overdue testing, the audit should trigger follow-up rather than a simple pass. The goal is to document whether the extraction system is performing as intended and whether welding can continue safely under site requirements.
Standards & compliance context
- This template supports documentation and verification practices commonly used under OSHA general industry and construction requirements for welding, ventilation, and exposure control.
- It aligns with ANSI/ASSP occupational health program practices by checking whether engineering controls are maintained and effective at the point of use.
- Where local exhaust systems are part of a fire or life-safety strategy, coordinate findings with applicable NFPA requirements and the site’s AHJ expectations.
- If the welding process creates airborne contaminants that may require additional controls, use this audit alongside your respiratory protection, industrial hygiene, and maintenance programs.
- Annual ventilation testing references in the form help support a formal preventive maintenance and verification cycle, but they do not replace required professional assessment where applicable.
General regulatory context for orientation only — verify current requirements with counsel or the relevant agency before relying on this template for compliance.
What's inside this template
Inspection Details
This section establishes exactly which welding station and extraction system were reviewed so the findings can be traced to the right equipment and test history.
- Inspection date and time recorded
- Inspection area or welding station identified
- Welding process and fume extraction system identified
- Inspector name and signature completed
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Last documented local exhaust ventilation test reviewed
Record the date or reference of the most recent airflow or performance test, if available.
Hood Placement and Capture Zone
This section matters because capture starts at the hood; if the hood is too far away, blocked, or poorly aimed, the system will not control the fume plume.
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Hood positioned close enough to the welding fume source
Verify the hood is placed to capture fumes at or near the point of generation without obstructing the work.
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Hood opening unobstructed and oriented toward the plume
Check that the hood face is not blocked by tools, fixtures, cables, or the workpiece and is aligned to intercept the rising fume plume.
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Flexible ducting and hood supports secure and undamaged
Inspect for loose joints, crushed ducting, tears, missing clamps, or damaged support arms that could reduce capture efficiency.
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Extraction hood does not interfere with safe welding access
Confirm the hood placement allows the welder to maintain safe posture, visibility, and access to the workpiece.
Airflow and Capture Performance
This section verifies whether the system is actually moving enough air to capture fumes under real welding conditions, not just running mechanically.
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Measured capture velocity meets site requirement
Record the measured capture velocity at the hood face or specified test point and compare it to the site standard or manufacturer requirement.
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Airflow indicator or gauge shows normal operating range
Verify the system airflow indicator, manometer, or gauge is within the normal operating range specified by the manufacturer or site procedure.
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Visible fume is effectively drawn into the hood during welding
Observe active welding conditions to confirm the plume is being captured before it enters the welder's breathing zone.
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System noise, vibration, or pulsation indicates normal operation
Check for abnormal fan noise, vibration, or airflow pulsation that may indicate blockage, imbalance, or mechanical failure.
Filter Condition and Maintenance
This section matters because a clogged or damaged filter can reduce airflow, increase load on the system, and undermine capture performance.
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Filter condition acceptable with no visible damage or saturation
Inspect pre-filters and main filters for excessive loading, tears, bypass leakage, collapsed media, or other visible defects.
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Filter replacement or cleaning is up to date
Confirm filters have been cleaned or replaced according to the maintenance schedule and manufacturer instructions.
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Differential pressure or clogging indicator within acceptable range
Record the filter differential pressure or clogging indicator reading and compare it to the acceptable operating range.
Documentation and Corrective Actions
This section closes the loop by recording deficiencies, assigning follow-up, and confirming whether welding can continue safely.
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Annual local exhaust ventilation testing documented
Verify the system has documented annual testing or performance verification where required by site procedure or regulatory program.
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Deficiencies documented with corrective action assigned
Record any non-conformance, responsible person, and due date for repair, adjustment, cleaning, or retesting.
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Area safe for continued welding operations
Based on the inspection results, determine whether the extraction system is fit for continued use or requires immediate shutdown and repair.
How to use this template
- 1. Record the inspection date, time, welding station, welding process, and the specific fume extraction system being audited, then review the last documented local exhaust ventilation test before you start.
- 2. Walk the station and verify that the hood is close enough to the source, aimed toward the plume, unobstructed, and not interfering with safe welding access.
- 3. Check the ducting, hood supports, airflow indicator, capture velocity reading, and visible fume movement while welding is in progress or simulated under normal operating conditions.
- 4. Inspect the filter housing, filter media, and differential pressure or clogging indicator, then confirm whether cleaning or replacement is current.
- 5. Document every deficiency with a clear corrective action, assign ownership and due date, and decide whether the area remains safe for continued welding operations.
- 6. Close the audit by signing the record, saving any required photos or test references, and escalating unresolved issues to maintenance, EHS, or the supervisor.
Best practices
- Measure capture performance at the actual welding position, not just at the hood face, because plume control depends on real station geometry.
- Photograph hood placement, damaged ducting, clogged filters, and gauge readings at the time of inspection so the deficiency record is defensible.
- Treat abnormal noise, vibration, or pulsation as an early warning sign of airflow or fan problems, not as a cosmetic issue.
- Keep the hood close enough to capture the plume without blocking torch access, body position, or required visibility for the welder.
- Verify that the airflow indicator or differential pressure reading is interpreted against the site’s normal operating range, not a generic pass/fail assumption.
- Document whether the system was checked during active welding, because a hood can look acceptable when idle but fail to capture fumes under load.
- Use the same inspection sequence each time so recurring deficiencies, such as poor hood positioning or overdue filter service, are easy to trend.
What this template typically catches
Issues teams running this template most often surface in practice:
Common use cases
Frequently asked questions
What does this welding fume extraction audit template cover?
It covers the core checks that determine whether a local exhaust ventilation system is actually capturing welding fumes: hood placement, hood orientation, airflow, visible plume capture, filter condition, and documentation. It also includes inspection details and corrective action tracking so findings are not left as informal notes. Use it for fixed or portable extraction setups at welding stations.
How often should this audit be performed?
Use it on a routine cadence that matches your site risk and maintenance program, and always after changes to the welding process, hood position, ducting, or filter service. Many sites pair this with periodic local exhaust ventilation testing and daily or shift-level pre-use checks. If the system shows reduced capture, abnormal noise, or a clogged filter indicator, inspect it immediately rather than waiting for the next scheduled audit.
Who should complete the audit?
A supervisor, EHS lead, maintenance technician, or other trained inspector can complete it, provided they understand the welding process and the extraction system being checked. The person should be able to recognize poor hood placement, damaged ducting, and signs of inadequate capture. If your site uses a formal ventilation testing program, the audit should align with that program and its designated owner.
Does this template map to OSHA or other standards?
Yes, it supports documentation and verification practices commonly used under OSHA general industry and construction requirements, along with ventilation and respiratory protection programs where applicable. It also aligns with ANSI/ASSP guidance for occupational health and with manufacturer maintenance requirements for local exhaust systems. If your facility is in a regulated environment, use the template as an operational audit tool alongside your formal compliance program.
What are the most common mistakes this audit catches?
The most common issues are hoods placed too far from the arc, the hood opening aimed away from the plume, flexible ducting that leaks or sags, and filters that are overdue for replacement or cleaning. Audits also catch systems that sound different from normal, show abnormal gauge readings, or fail to pull visible fume into the hood during welding. These are practical signs that the system may be underperforming even if it is still running.
Can I customize this for MIG, TIG, stick, or robotic welding?
Yes, and you should tailor the capture criteria to the welding process and station layout. MIG and flux-cored processes often need closer attention to plume volume and hood placement, while TIG may have different capture behavior and access constraints. Robotic cells may also need added checks for guarding, enclosure airflow, and maintenance access.
How does this compare with ad-hoc spot checks?
Ad-hoc checks often miss repeatable issues because they rely on memory and informal judgment. This template gives you a consistent walk-through order, objective observations, and a place to document deficiencies and corrective actions. That makes it easier to trend recurring problems, prove follow-up, and keep different inspectors aligned.
What should I do if the audit finds poor capture or a clogged filter?
Document the deficiency, assign corrective action, and decide whether welding can continue safely based on your site rules and the severity of the issue. Common responses include repositioning the hood, clearing obstructions, replacing or cleaning filters, and scheduling maintenance or airflow testing. If the system cannot maintain acceptable capture, treat it as a safety issue rather than a cosmetic defect.
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