JSA for
Welding Operations | JOB TITLE: | Created: | Revise Date: | JHA Creator: | Title: | |
OxyAcetylene Welder | 5/15/2007 | | Mr Safety | OSHEM | |
WORK LOCATION (ROOM NO.): | DEPARTMENT: | TOOL/MACHINE MAKE AND MODEL: | |
Most welding shops | | model xxx | |
Task(s) | Define Activities/Equipment Used (note frequency/duration) | POTENTIAL HAZARDS | REQUIRED CONTROLS/WORK PRACTICES | REQUIRED PPE | |
| Oxy-Acetylene welding, used on average X times a day, X days a week by X # of welders. | | | | |
1. Turn torch on | 1a. Wipe down work area with damp cloth (water) | Spilling water could cause slip/trip. Not cleaning area could leave dust particles/combustibles that could flare | Slowly apply small amount of water to cloth and wipe down work area. Ensure fire extinguishers are available and charged. | N/A | |
| 1b. Uncoil and straighten hoses from cylinders. | Loose hose on floor could cause slip/trip. Damaged hose could cause leak/fire | Ensure uncoiled hoses will not be a tripping hazard. Ensure there are no kinks, cracks or damage to hoses. Ensure all torch valves are closed and inspect for possible leaks. | N/A | |
| 1c. Adjust screws on regulators so they are backed off. | Gas leak could cause fire | Ensure adjustment screws on regulators are backed off so no tension is present for both acetylene and oxygen. | N/A | |
| 1d. Open cyclinder valve slowly by turning counterclockwise. | None | None | N/A | |
| 1e. Turn adjustment screw clockwise to desired pressure | None | Know the correct pressure for type equipment | | |
| 1f. Crack open acetylene valve on torch body. | Potential gas accumulation if not prepared to light | Have striker available | Safety glasses, work gloves | |
| 1g. Use striker to ignite torch | Potential gas accumulation
Spark production (could ignite other material) | Quickly, so not to let gas accumulate, hold torch facing away from face, body and portable unit. Using other hand, strike flint approximately 2 inches from tip of torch. | Safety glasses, work gloves | |
| 1h. Adjust acetylene torch body valve | Incorrect adjustment could cause flame out, undesirable magnitude | Adjust acetylene torch body valve to desired flame | Safety glasses, work gloves | |
| 1i. Open axygen valve on torch body | Incorrect adjustment could cause flame out, undesirable magnitude | Slowly open oxygen valve on torch body to achieve desired flame. | Safety glasses, work gloves | |
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2. Perform weld | 2a. Have flux and welding rods appropriate for type weld and material being welded | Improper weld due to improper selection of flux and welding rods | Welding training should cover when and how to use different fluxes and welding rods. Adhere to the trianing. | | |
| 2b. Perform weld | 2b1. Fire or Explosion | 1. Updated (annual) Welding shop burn permit required.
2. If welding outside shop, Burn Permit from Authorized Person required.
3. Do not weld near flammable material. Move flammables at least 35 feet away or protect them with flame-proof covers.
4. Do not weld on drums, tanks or any closed containers unless a qualified person has tested it and declared it or prepared it to be safe. | | |
| | 2b2. Breathing welding fumes | 1. Use enough forced ventilation or local exhaust (forced suction) at the arc to remove fumes from breathing area.
2. Use portable smoke eater when out on a job.
3. Use welding helmet that has fresh air supply.
4. Keep your head out of the fumes and do not breathe fumes. | Welder's cap; safety glasses, oxygen fed respirator, if required; Welder's face shield; welder's gloves; welder's apron | |
| | 2b3. Sparks could burn eyes, hands, clothes | 1. Wear welder's cap, eye protection, face shield, gloves, apron
2. If welding outside with breeze, use wind break and line of sight barrier to protect passers-by. | Welder's cap, eye protection, face shield, gloves, apron | |
| 3c. Perform weld with arc welder | 2b4. Arc rays can burn eyes | 1. Use welding helmet with correct shade of filter.
2. Use welding curtain to shield other employees and visitors from arc rays. | Welder's cap, eye protection, face shield, gloves, apron | |
| | 2b5. Smoke may set off smoke alarm or sprinkler system | Follow procedures/protocols listed in Chapter XX, Fire Protection Impairment Permit whenever working closer than 35 feet from a sprinkler head or smoke detector. | Welder's cap, eye protection, face shield, gloves, apron | |
| 2c. Weld heating, AC, water, steam, condensate return lines. | 2c1.. Contents of piping could cause burns | Drain piping at welding area, wearing insulated gloves, eye protection or whatever other PPE based on pipe contents. | Welder's cap, eye protection, face shield, gloves, apron | |
| 2d. Perform weld on or near electrical devices | 2d1. Electical shock, cuts and burns | Use lock-oout/tag-out procedures. | Welder's cap, eye protection, face shield, gloves, apron | |
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3. Turn off torch | 3a. Close acetylene valve on torch body | Valve and stem (pinch points) | Position fingers on acetylene valve ensuring they do not come in contact with the valve stem. Turn valve clockwise. | Welder's cap, eye protection, face shield, gloves, apron | |
| 3b. Close oxygen valve on torch body | Valve and stem (pinch points) | Position fingers on oxygen valve ensuring they do not come in contact with the valve stem. Turn valve clockwise. | Welder's cap, eye protection, face shield, gloves, apron | |
| 3c. Turn the acetylene valve clockwise | Valve and stem (pinch points) | Position fingers on acetylene valve ensuring they do not come in contact with the valve stem. Turn valve clockwise. | Welder's cap, eye protection, face shield, gloves, apron | |
| 3d. Turn the oxygen valve clockwise | Valve and stem (pinch points) | Position fingers on acetylene valve ensuring they do not come in contact with the valve stem. Turn valve clockwise. | Welder's cap, eye protection, face shield, gloves, apron | |
| 3e. Close adjustment screws on acetylene regulator | None | N/A | None | |
| 3f. Close adjustment screws on oxygen regulator | None | N/A | None | |
| 3g. Slowly open Acetylene valve on the torch body to bleed lines. | Gas (potential inhalation, explosion) | Position torch nozzle away from personnel and any heat source. Open valve on torch body. | None | |
| 3h. Slowly open oxygen valve on the torch body to bleed lines. | Gas (potential explosion) | Position torch nozzle away from personnel and any heat source. Open valve on torch body. | None | |
| 3i. Close acetylen valve on torch body | Valve and stem (pinch points) | Position fingers on acetylene valve ensuring they do not come in contact with the valve stem. Turn valve clockwise. | None | |
| 3j. Close oxygen valve on torch body | Valve and stem (pinch points) | Position fingers on acetylene valve ensuring they do not come in contact with the valve stem. Turn valve clockwise. | None | |
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