27.19. Welding, Cutting and Brazing Checklist.

27.19.1. Are only approved apparatuses purchased for use? Reference 27.2.1

27.19.2. Do personal protective clothing and equipment meet or exceed the requirements of Chapter
14, Personal Protective Equipment (PPE)? Reference 27.2.3

27.19.3. Are contractors advised that they must comply with appropriate fire, safety and health
requirements when welding, cutting or brazing on Air Force facilities? Reference 27.2.4

27.19.4. Are acetylene cylinders used and stored in an upright position? Reference 27.3.1

27.19.5. Is the fuel gas and oxygen supply to the torch shut off when left unattended or not used for
extended periods of time, i.e., when left unattended for 30 minutes or more? Reference 27.3.3

27.19.6. Are welders aware that welding on concrete floors may cause the concrete to spall and
produce projectiles? Reference 27.3.9

27.19.7. Are welders provided appropriate fall protection when working on elevated surfaces?
Reference 27.3.10

27.19.8. Does the welding operation supervisor ensure installed fire protection sprinkler systems are
operational before the welding operation begins, or, if not, ensure other means of fire detection,
reporting and extinguishing have been approved by the installation FES Flight? Reference

27.19.9. Are welding hoses visually checked for damage once a shift, before each use? Reference

27.19.10. Are warning signs posted to prevent personnel from inadvertently touching hot items when
left unattended? Reference 27.4.4

27.19.11. Have workers and other personnel adjacent to the welding areas been protected from
radiant energy or spatter by use of noncombustible and/or flameproof screens? Reference

27.19.12. Are walls, screens, and non-rigid heat and spark barriers finished to limit reflectivity?

27.19.13. Have procedures been established to prevent personnel from entering an inside welding
area and inadvertently being exposed to welding hazards? Reference

27.19.14. Where floors have been wet down or damp sand applied, have rigid controls been
established to ensure proper grounding of equipment, and are personnel protected from possible
electrical shock? Reference

27.19.15. Is a fully charged and operational fire extinguisher, appropriate for the task, kept in the
work area at all times? Reference

27.19.16. Are welding operations roped off or segregated by physical barriers to prevent
unauthorized entry into the area? Reference

27.19.17. Are outside welding operations placarded to warn bystanders that welding operations are
in progress? Reference

27.19.18. Has a written permit been obtained from the installation FES Flight prior to the start of
welding operations? Reference

27.19.19. Whenever welding activities are within 35 feet of combustible materials, are firewatcher
procedures implemented? References and

27.19.20. Has a fire watch been assigned to monitor the operation for 30 minutes after completion of
cutting or welding operations, to detect and extinguish possible smoldering fires? References and

27.19.21. Is the welding operation environment free of flammable liquids and vapors? Reference

27.19.22. While welding and cutting operations are being performed, is fire extinguishing equipment
available and ready for use? Reference

27.19.23. Are approved flash arresters installed between each cylinder and the coupler block when
acetylene cylinders are coupled? Reference 27.6.2

27.19.24. Has backflow protection been provided that shall prevent oxygen from flowing into the
fuel-gas system or fuel from flowing into the oxygen system? Reference 27.6.3

27.19.25. Has flashback protection been provided by an approved device? Reference 27.6.4

27.19.26. Has back-pressure protection been provided by an approved relief device, set at a pressure
not greater than the pressure rating of the backflow or flashback device, whichever is lower?
Reference 27.6.5

27.19.27. Are clearly marked master shutoff valves provided for installed systems at points which
are readily accessible? Reference 27.6.7

27.19.28. Does clothing provide sufficient coverage to prevent skin burns? Reference 27.7.1

27.19.29. Are front pockets and upturned sleeves or cuffs prohibited? Reference 27.7.1

27.19.30. Are flame resistant gloves, in good condition, used to protect welder‘s hands? Reference

27.19.31. When additional protection is needed, are durable flame-resistant aprons made of leather
or suitable materials provided to protect the front of the body? Reference 27.7.3

27.19.32. For heavy work, are flame-resistant leggings or other equivalent means used to give added
protection to the legs? Reference 27.7.4

27.19.33. When necessary, are cape sleeves or shoulder covers used during overhead welding,
cutting or other operations? Reference 27.7.5

27.19.34. When necessary, are flame-resistant caps worn under helmets to prevent head burns?
Reference 27.7.6

27.19.35. Is only approved respirator equipment used when working in atmospheres of hazardous
concentrations of airborne contaminants? Reference 27.7.7

27.19.36. Do all welding helmets meet 29 CFR 1910.252, Welding, Cutting, and Brazing - General
Requirements, requirements? Reference

27.19.37. When two or more welders are exposed to each other's arc, are filter lens goggles worn
under the welders‘ helmets to protect them from the harmful rays? Reference

27.19.38. Are goggles or other suitable eye protection used during all gas welding or oxygen cutting
operations? Reference

27.19.39. Is eye protection in the form of suitable tinted goggles or spectacles provided for brazing
operations? Reference

27.19.40. Are workers trained to arrange helmets to protect the face, neck and ears from the arc's
radiant energy? Reference

27.19.41. Are ventilated goggles used to prevent fogging of the lenses? Reference

27.19.42. Are hand-held shields, designed to shield the face and eyes, prohibited from use?

27.19.43. Does the commander ensure workers who handle, use or are potentially exposed to
hazardous materials provided training IAW the AFHCP? Reference 27.8.2

27.19.44. Do welders check gas line connections after assembly and before lighting the torch?
Reference 27.9.1

27.19.45. Is the tungsten-arc welding machine's power supply always disconnected before changing
electrodes? Reference 27.10.5

27.19.46. Are welders trained to never change tungsten-arc electrodes with bare hands or wet
gloves? Reference

27.19.47. Is welding on aircraft accomplished outside of hangars whenever possible? Reference

27.19.48. Does the welding supervisor ensure the senior flight line supervisor is thoroughly briefed
on the planned welding operation? Reference

27.19.49. Prior to the start of welding operations, are fuel tank and engine fuel vents closed/plugged
on any aircraft within 50 feet of the welding operation? Reference

27.19.50. Does the welder rope off or segregate the welding operation by a physical barrier prior to
starting the welding operation? Reference

27.19.51. Is the fireguard informed to stop the welding operation if a hazardous condition develops?

27.19.52. Do aircraft welding operations performed in hangars conform to the requirements of
Chapter 6 of this standard and NFPA 410, Standard on Aircraft Maintenance? Reference

27.19.53. Has the tank, cylinder, or other container which is to be cut, welded or have other hot work
performed on it been purged or inert? Reference

27.19.54. Are new containers inert or purged prior to cutting, welding or other hot processes being
applied to it? Reference

27.19.55. Are welding or cutting operations only conducted in vehicle maintenance approved by the
installation FES Flight? Reference 27.12

27.19.56. Does maintenance shop supervision evaluate each welding or cutting task to determine if
batteries need to be removed or fuel tanks require removal and/or need to be made inert? Reference

27.19.57. Do cylinders of compressed gas have pressure-reducing regulators installed? Reference

27.19.58. Are oxygen cylinders and fittings kept free of grease and oil at all times? Reference

27.19.59. Have circuits been de-energized before testing? Reference 27.14.1

27.19.60. Are power cables and electrode holders inspected prior to every use? Reference 27.14.4

27.19.61. Before starting operations, has the work lead been firmly attached to the work? Reference

27.19.62. Have cables with damaged insulation or exposed conductors been repaired or replaced?

27.19.63. Are electrode holders, when not in use, placed where they cannot make electrical contact
with personnel, conducting objects, fuel or compressed gas cylinders? Reference 27.15.4

27.19.64. Does the welding supervisor ensure all welders meet the requirements of Chapter 23,
Confined Spaces, prior to entry into confined spaces? Reference 27.17.1

27.19.65. Has a written permit (AF Form 592) been obtained from the FES Flight, with
coordination by the installation Ground Safety office and BE, prior to starting welding operations in
a confined space? Reference 27.17.1

27.19.66. When welding or cutting operations are conducted in confined spaces, is there adequate
ventilation to prevent the accumulation of toxic materials or possible oxygen deficiency? Reference

27.19.67. Before operations are started, is heavy portable equipment mounted on wheels securely
blocked? Reference 27.17.2

Please note that this checklist is a hypothetical example and provides basic information only. It is not intended to take the place of, among other things, workplace, health and safety advice; medical advice, diagnosis, or treatment; or other applicable laws. You should also seek your own professional advice to determine if the use of such checklist is permissible in your workplace or jurisdiction.