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Safe Work Procedure: Welding

Document Number: [SWP-NUMBER] Revision Date: [DATE] Next Review Date: [NEXT REVIEW DATE] Department: [DEPARTMENT NAME]

1. Scope

This Safe Work Procedure (SWP) outlines the necessary safety precautions and procedures to be followed when performing welding operations. It applies to all employees, contractors, and visitors who are involved in or present during welding activities. This procedure covers various types of welding, including arc welding, gas welding, and other allied processes [1]. It includes guidelines for fire prevention, personal protective equipment (PPE), equipment inspection, and emergency response.

This SWP applies to all work environments where welding activities are conducted, including but not limited to construction sites [2], maintenance shops [3], and confined spaces [4]. It is applicable to both indoor and outdoor welding operations.

This SWP should be used in conjunction with other relevant safety procedures and guidelines, including the manufacturer's instructions for welding equipment and any site-specific safety requirements.

2. Definitions

Welding or Allied Process: Any specific type of electric or oxy fuel gas welding or cutting process including arc welding, brazing, solid-state welding, soldering, resistance welding, arc cutting, oxygen cutting, thermal spraying, thermal adhesive bonding and other cutting [1].

Competent Person: A person who is qualified because of knowledge, training and experience to organize the work and workplace to perform the work safely [1].

Confined Space: A relatively small or restricted space such as a tank, boiler, pressure vessel, or small compartment of a ship [4].

3. Responsibilities

3.1 Supervisors

  • Ensure that all workers are properly trained and competent to perform welding tasks [5].
  • Provide workers with the necessary personal protective equipment (PPE) and ensure that it is used correctly [6].
  • Conduct regular inspections of welding equipment and work areas to identify and correct hazards [6].
  • Ensure that fire prevention measures are in place, including the availability of fire extinguishers and fire watches when required [3].
  • Secure authorization for cutting or welding operations from the designated management representative [3].

3.2 Workers

  • Participate in required training and demonstrate competency in welding procedures [5].
  • Inspect welding equipment and PPE before each use and report any defects to the supervisor [6].
  • Use the correct PPE for the welding task being performed [6].
  • Follow all safety procedures and instructions provided by the supervisor [5].
  • Report any hazards or incidents to the supervisor immediately [5].
  • Ensure that adequate precautions have been taken to remove all hazardous material or processes that produce combustible, flammable or explosive material, dust, gas or vapour; and to prevent fire or explosion [1].

3.3 Health and Safety Representative

  • Assist in the development and implementation of welding safety procedures [5].
  • Conduct workplace inspections to identify potential welding hazards [5].
  • Investigate incidents and recommend corrective actions [5].
  • Promote a culture of safety and awareness regarding welding hazards [5].

4. Potential Hazards and Risks

HazardRiskControl Measures
Electric ShockElectrocution, burnsEnsure welding equipment is properly grounded [7]. Use equipment with low open circuit voltage [8]. Avoid welding in wet conditions [8].
Fire and ExplosionBurns, property damageRemove or protect combustible materials from the welding area [5]. Maintain fire extinguishing equipment [9]. Ensure proper ventilation to prevent the accumulation of flammable gases [10].
Exposure to Fumes and GasesRespiratory irritation, long-term health effectsUse local exhaust ventilation to remove fumes and gases from the breathing zone [10]. Provide respiratory protection when ventilation is inadequate [10].
Eye InjuriesBurns, vision lossUse appropriate welding helmets or hand shields with filter lenses [11]. Ensure that helpers and other personnel in the area also wear eye protection [11].
BurnsSkin damageWear appropriate protective clothing, including flameproof gloves, aprons, and sleeves [12].
Confined SpacesAsphyxiation, toxic exposure, fire/explosionEnsure adequate ventilation [4]. Station an attendant outside the confined space [4]. Use appropriate respiratory protection [10].
Hot Surfaces and MaterialsBurnsAfter welding operations are completed, the welder must mark the hot metal or provide some other means of warning other workers [4].
Falling Tools or PartsInjury to personnel, damage to equipmentRetrieve any tools that fall immediately [13]. Always secure tools or parts that are near the machine and store tools properly after maintenance is complete [13].

5. Personal Protective Equipment (PPE)

It is essential to use the proper PPE to protect against the hazards associated with welding operations [12].

  • Welding Helmet or Hand Shield - Protects the face and eyes from arc radiation, heat, and sparks. Select the appropriate filter lens shade for the welding process being used [11].
  • Safety Glasses or Goggles - Provides additional eye protection from flying debris and arc flash, especially when lifting the welding helmet or performing non-welding tasks in the area [11].
  • Flame-Resistant Clothing - Protects the skin from burns caused by sparks, heat, and UV radiation. This includes a jacket, trousers, and sleeves made of leather or flame-retardant material [12].
  • Gauntlet Gloves - Protects hands and wrists from heat, sparks, and cuts. Gauntlet gloves should be made of leather or other flame-resistant material [12].
  • Leather Boots - Protects feet from falling objects, sparks, and burns. High-top leather boots are recommended [12].

Inspect all PPE before each use for damage or wear. Replace damaged PPE immediately. Clean and maintain PPE according to the manufacturer's instructions.

6. Equipment and Tools

It is essential to use the proper equipment and tools for welding operations and to maintain them in good working condition [6].

  • Welding Machine - Provides the electrical current necessary for welding. Ensure the machine is properly grounded and in good working order [7].
  • Welding Electrodes or Wire - Consumable materials used to create the weld. Select the appropriate type and size of electrode or wire for the welding process and material being used [7].
  • Electrode Holder or Welding Gun - Holds the electrode or wire and allows the welder to control the arc. Ensure the holder or gun is properly insulated and in good working order [7].
  • Ground Clamp - Connects the welding machine to the workpiece, completing the electrical circuit. Ensure the clamp is securely attached to a clean, bare metal surface [7].
  • Welding Cables - Carries the electrical current from the welding machine to the electrode holder and ground clamp. Inspect cables for damage or wear before each use [7].

Inspect all equipment and tools before each use for damage or wear. Replace damaged equipment immediately. Maintain equipment according to the manufacturer's instructions.

7. Pre-Job Requirements

7.1 Training and Competency

  • All welders must be trained and certified in the specific welding processes they will be using [5].
  • Training must include hazard awareness, safe work practices, and emergency procedures [5].
  • Welders must demonstrate competency in welding techniques and the use of PPE [5].

7.2 Pre-Job Briefing

  • Conduct a pre-job briefing with all workers involved in the welding operation [5].
  • Review the scope of work, potential hazards, and control measures [5].
  • Discuss the safe work procedure and ensure that all workers understand their roles and responsibilities [5].
  • Identify emergency contact information and evacuation routes [5].

7.3 Work Area Preparation

  • Inspect the work area for potential fire hazards, such as combustible materials, flammable liquids, and explosive atmospheres [3].
  • Remove or protect combustible materials from the welding area [5].
  • Ensure that adequate ventilation is provided to remove fumes and gases [10].
  • Erect noncombustible screens or shields to protect other workers from arc rays and sparks [6].
  • Place welding cable and other equipment so that is clear of passageways, ladders, and stairways [11].

8. Safe Work Procedure Steps

Step 1: Equipment Inspection and Setup

Detailed description of step 1: Before starting any welding work, inspect all equipment to ensure it is in safe working condition.

  • Sub-step 1.1: Check welding machine for any damage to cables, connections, and insulation [7].
  • Sub-step 1.2: Verify that the welding machine is properly grounded [7].
  • Sub-step 1.3: Ensure that the correct welding rod or wire is selected for the job [7].

Safety considerations for this step: Damaged or improperly grounded equipment can cause electric shock or fire [7].

Step 2: Work Area Preparation

Detailed description of step 2: Prepare the work area to minimize fire hazards and protect other workers.

  • Sub-step 2.1: Clear the area of any combustible materials within 35 feet of the welding site [5].
  • Sub-step 2.2: Use fire-resistant shields or guards to protect combustible walls, partitions, ceilings, or roofs [5].
  • Sub-step 2.3: Ensure adequate ventilation to remove fumes and gases [10].

Safety considerations for this step: Combustible materials can easily ignite from welding sparks, and inadequate ventilation can lead to exposure to harmful fumes [5].

Step 3: Welding Operation

Detailed description of step 3: Perform the welding operation following safe work practices.

  • Sub-step 3.1: Wear appropriate PPE, including a welding helmet, gloves, and flame-resistant clothing [12].
  • Sub-step 3.2: Maintain a safe distance from the welding arc to avoid exposure to harmful radiation [11].
  • Sub-step 3.3: Use proper welding techniques to ensure a strong and safe weld [14].

Safety considerations for this step: Failure to use proper PPE can result in burns, eye injuries, and exposure to harmful radiation [12].

9. Precautions and Safety Measures

  • Fire Prevention: Ensure that cutting and welding are so scheduled that plant operations that might expose combustibles to ignition are not started during cutting or welding [3].
  • Ventilation: Use adequate ventilation to prevent the accumulation of toxic materials or possible oxygen deficiency [10].
  • Eye Protection: Use helmets or hand shields during all arc welding or arc cutting operations [11].
  • Protective Clothing: Wear appropriate protective clothing required for any welding operation which will vary with the size, nature and location of the work to be performed [12].
  • Confined Spaces: When welding or cutting is being performed in any confined spaces you must leave the gas cylinders and welding machines on the outside [4].

10. Emergency Procedures

10.1 General Emergency Response

In the event of an emergency, immediately stop work and assess the situation. Evacuate the area if necessary and follow the established emergency response plan.

10.2 Specific Emergency Scenarios

  • Fire: Activate the fire alarm and evacuate the area. Use a fire extinguisher to put out the fire if it is small and contained. If the fire is large or spreading rapidly, call the fire department [9].
  • Electric Shock: Turn off the power to the welding machine. If the person is still in contact with the electrical source, use a non-conductive object to separate them from the source. Call for medical assistance [7].
  • Exposure to Fumes or Gases: Move the affected person to fresh air. If breathing is difficult, administer oxygen. Call for medical assistance [10].

10.3 Emergency Contact Information

  • Emergency Services: 911
  • [Company Safety Officer]: [PHONE NUMBER]
  • [Project Manager]: [PHONE NUMBER]

11. Incident Reporting and Investigation

All incidents, near-misses, and hazards must be reported to the supervisor immediately. An investigation will be conducted to determine the root cause of the incident and to implement corrective actions to prevent recurrence.

12. References and Related Documents

  • Safety Standards for General Safety and Health Standards (Chapter 296-24 WAC)
  • Rules for the Administration of the Oregon Safe Employment Act (General Occupational Safety and Health, Division 2, OSHA Oregon)
  • Rules for the Administration of the Oregon Safe Employment Act (Construction, Division 3, OSHA Oregon)
  • CSA standard CSA W117.2, 'Safety in Welding, Cutting, and Allied Processes'

Approved by: [NAME AND POSITION] Date: [APPROVAL DATE]

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14 source record(s)

Sources used for this answer

[1] Safety Standards for General Safety and Health Standards (Chaper 296-24 WAC)

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\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ observe the same precautions with regard to cracks or holes in walls, open doorways and open or broken windows. - (2) Fire extinguishers . You must maintain suitable fire extinguishing equipment in a state of readiness for instant use. Such equipment may consist of pails of water, buckets of sand, hose or portable extinguishers depending upon the nature and quantity of the combustible material exposed. ## (3) Fire watch . - (a) Fire watchers must be required whenever welding or cutting is performed in locations where other than a minor fire might develop, or any of the following conditions exist: - (i) Appreciable combustible material, in building construction or contents, closer than 35 feet to the point of operation. - (ii) Appreciable combustibles are more than 35 feet away but are easily ignited by sparks. - (iii) Wall or floor openings within a 35-foot radius expose combustible material in adjacent areas including concealed spaces in walls or floors. - (iv) Combustible materials are adjacent to the opposite side of metal partitions, walls, ceilings, or roofs and are likely to be ignited by conduction or radiation. - (b) Fire watchers must have fire extinguishing equipment readily available and be trained in its use. They must be familiar with facilities for sounding an alarm in the event of a fire. They must watch for fires in all exposed areas, try to extinguish them only when obviously within the capacity of the equipment available, or otherwise sound the alarm. A fire watch must be maintained for at least a 1/2 hour after completion of welding or cutting operations to detect and extinguish possible smoldering fires. - (4) Authorization . Before cutting or welding is permitted, the area must be inspected by the individual responsible for auth…

[2] Kobelco SK200-10, SK210LC-10 Operation Manual

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［ ## DO NOT DROP TOOLS OR PARTS Falling tools or parts may cause damage to the machine or cause unintended movement of the machine and result in serious injury or death. - · Retrieve any tools that fall immediately. - · Always secure tools or parts that are near the machine and store tools properly after maintenance is complete. ## GENERAL GUIDELINES FOR WELDING Contact your KOBELCO authorized dealer before welding on the machine. Welding could damage wires, electronic processors, hoses, and tubes. Do not weld tanks or lines that contain flammable fluids or flammable material. Empty and purge the lines and tanks. Then clean the lines and tanks with a nonflammable solvent prior to welding or flame cutting. To prevent serious injury or possible fire, welding work must be performed by a certified welder at a facility with welding devices suitable for the task. ## BASIC PRECAUTIONS FOR WELDING AND GRINDING - · Before welding, select a location away from flammable items and have a fire extinguisher nearby. - · Perform work in a well-ventilated area. - · Always wear protective gears appropriate for welding. - · Turn the engine off and remove the key. - · Disconnect the negative (-) cable from its battery terminal. When the battery power-off switch is provided, set it to "OFF". - · Remove or adequately shield all components, hoses, tubes, and wires in the area. - · Ensure that the components are properly grounded in order to avoid unwanted arcs. Attach the welder ground cable directly to the area within 1 m (3 ft.) from the part to be welded and on the same parent material. If the welder ground cable is attached to the area near electric parts/connectors, these electric parts/connectors may be damaged. - · Make sure neither the bearing nor the bearing seal is between the welder ground cable and the part to be welded. - · Do not attach the welder ground cable near the pin or cylinder. It will damage the plating on the pin or cylinder. - · Remove paint from any surfa…

[3] Rules for the Administration of the Oregon Safe Employment Act (Construction, Division 3, OSHA Oregon)

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## WELDING AND CUTTING ## OAR 437, DIVISION 3 ## CONSTRUCTION ## SUBDIVISION J - WELDING AND CUTTING [redacted phone] Adoption by Reference. In addition to, and not in lieu of, any other safety and health codes contained in OAR Chapter 437, the Department adopts by reference the following federal regulations printed as part of the Code of Federal Regulations, in the Federal Register: ## (10) Subdivision J - Cutting and Welding. (a) 29 CFR 1926.350 Gas welding and cutting . Repealed. Oregon OSHA Admin. Order 6- 2014, f. 10/28/14, ef. 5/1/15. In Oregon, OAR [redacted phone] applies. (b) 29 CFR 1926.351 Arc welding and cutting , published 7/11/86, FR vol. 51, p. [redacted postal code]. (c) 29 CFR 1926.352 Fire prevention , published 4/6/79, FR vol. 44, p. [redacted postal code]. (d) 29 CFR 1926.353 Ventilation and protection in welding, cutting, and heating , published 6/30/93, FR vol. 58, no. 124, p. [redacted postal code]. (e) 29 CFR 1926.354 Welding, cutting, and heating in way of preservative coatings , published 4/6/79, FR vol. 44, p. [redacted postal code]. These standards are available at the Oregon Occupational Safety and Health Division, Oregon Department of Consumer and Business Services, and the United States Government Printing Office. Stat. Auth.: ORS 654.025(2) and 656.726(4). Hist: Stats. Implemented: ORS 654.001 through 654.295. APD Admin. Order 5-1989, f. 3/31/89, ef. 5/1/89 (temp). APD Admin. Order 8-1989, f. 7/7/89, ef. 7/7/89 (perm). APD Admin. Order 14-1989, f. 7/20/89, ef. 8/1/89 (temp). APD Admin. Order 15-1989, f. 9/13/89, ef. 9/13/89 (perm). APD Admin. Order 16-1989 (temp), f. 9/13/89, ef. 9/13/89. OR-OSHA Admin. Order 2-1989, f. 10/17/89, ef. 10/17/89. OR-OSHA Admin. Order 3-1990, f. 1/19/90, ef. 1/19/90 (temp). OR-OSHA Admin. Order 7-1990, f. 3/2/90, ef. 3/2/90 (perm). OR-OSHA Admin. Order 8-1990, f. 3/30/90, ef. 3/30/90. OR-OSHA Admin. Order 13-1990, f. 6/28/90, ef. 8/1/90 (temp). OR-OSHA Admin. Order 19-1990, …

[4] Safety Standards for General Safety and Health Standards (Chaper 296-24 WAC)

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\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ - (iii) See that cutting and welding are so scheduled that plant operations that might expose combustibles to ignition are not started during cutting or welding. - (d) Must secure authorization for the cutting or welding operations from the designated management representative. - (i) Must determine that the cutter or welder secures their approval that conditions are safe before going ahead. - (ii) Must determine that fire protection and extinguishing equipment are properly located at the site. - (iii) Must ensure fire watches are available at the site when required. - (15) Fire prevention precautions . You must permit cutting or welding only in areas that are or have been made fire safe. Within the confines of an operating plant or building, cutting and welding should preferably be done in a specific area designed for such work, such as a maintenance shop or a detached outside location. Such areas should be of noncombustible or fire-resistive construction, essentially free of combustible and flammable contents, and suitably segregated from adjacent areas. When work cannot be moved practically, as in most construction work, you must make the area safe by removing combustibles or protecting combustibles from ignition sources. [Statutory Authority: RCW 49.17.010, .040, .050, and .060. 18-03-159 (Order 17-24), § 296-24-[redacted postal code], filed 01/23/2018, effective 02/23/2018. Statutory Authority: RCW 49.17.010, .040, .050, and .060. 15-24-100 (Order 15-04), § 296-24-[redacted postal code], filed 12/01/2015, effective 01/05/2016. Statutory Authority: Chapter 49.17 RCW. 94-15-096 (Order 94-07), 296-24-[redacted postal code], filed 7/20/94, effective 9/20/94; Order 73-5, 296-24-[redacted postal code], filed 5/9/73 and Order 73-4, 296-24-[redacted…

[5] Safety Standards for General Safety and Health Standards (Chaper 296-24 WAC)

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\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ - (7) Relocation of combustibles . Where practicable, you must relocate all combustibles at least 35 feet from the work site. Where relocation is impracticable, you must protect combustibles with flame proofed covers or otherwise shielded with metal or curtains. Edges of covers at the floor should be tight to prevent sparks from going under them. This precaution is also important at overlaps where several covers are used to protect a large pile. - (8) Ducts . You must suitably protect or shut down ducts and conveyor systems that might carry sparks to distant combustibles. - (9) Combustible walls . Where cutting or welding is done near walls, partitions, ceiling or roof of combustible construction, you must provide fire-resistant shields or guards to prevent ignition. - (10) Noncombustible walls . If welding is to be done on a metal wall, partition, ceiling or roof, you must take precautions to prevent ignition of combustibles on the other side, due to conduction or radiation, preferably by relocating combustibles. Where combustibles are not relocated, you must provide a fire watch on the opposite side from the work. - (11) Combustible cover . You must not attempt welding on a metal partition, wall, ceiling or roof having a combustible covering nor on walls or partitions of combustible sandwichtype panel construction. - (12) Pipes . You must not undertake cutting or welding on pipes or other metal in contact with combustible walls, partitions, ceilings or roofs if the work is close enough to cause ignition by conduction. - (13) Management . Management must recognize its responsibility for the safe usage of cutting and welding equipment on its property and: - (a) Based on fire potentials of plant facilities, establish areas for cutting and welding, a…

[6] Safety Standards for General Safety and Health Standards (Chaper 296-24 WAC)

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\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ with nonremovable hinged covers; heavy insulating sleeving or taping or other equivalent electrical and mechanical protection. If a welding lead terminal which is intended to be used exclusively for connection to the work is connected to the grounded enclosure, it must be done by a conductor at least 2 AWG sizes smaller than the grounding conductor and the terminal must be marked to indicate that is not grounded. - (e) No connections for portable control devices such as push buttons to be carried by the operator must be connected to an a.c. circuit of higher than 120 volts. Exposed metal parts of portable control devices operating on circuits above 50 volts must be grounded by a grounding conductor in the control cable. - (f) You must not use auto transformers or a.c. reactors to draw welding current directly from any a.c. power source having a voltage exceeding 80 volts. [Statutory Authority: RCW 49.17.010, .040, .050, and .060. 15-24-100 (Order 15-04), § 296-24-[redacted postal code], filed 12/01/2015, effective 01/05/2016. Statutory Authority: RCW 49.17.010, .040, .050. 01-11-038 (Order 99-36), § 296-24-[redacted postal code], filed 05/09/01, effective 09/01/01. Statutory Authority: Chapter 49.17 RCW. 91-24-017 (Order 91-07), 296-24-[redacted postal code], filed 11/22/91, effective 12/24/91; Order 73-5, 296-24-[redacted postal code], filed 5/9/73 and Order 73-4, 296-24-[redacted postal code], filed 5/7/73.] ## WAC 296-24-[redacted postal code] Installation of arc welding equipment. - (1) General . Installation including power supply must be according to the requirements of chapter 296-24 WAC Part L, and WAC [redacted identifier]. ## (2) Grounding . - (a) You must ground the frame or case of the welding machine (except engine-driven machi…

[7] Occupational Safety General Regulations (N.S. Reg. 44/99)

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## General provisions 109 - (1) In this Part, 'welding or allied process' means any specific type of electric or oxy fuel gas welding or cutting process including those processes referred to in Appendix A of the latest version of CSA standard CSA W117.2, 'Safety in Welding, Cutting, and Allied Processes', and includes - (a) arc welding, brazing, solid-state welding, soldering, resistance welding, and other welding; and - (b) allied processes such as arc cutting, oxygen cutting, thermal spraying, thermal adhesive bonding and other cutting. Subsection 109(1) amended: O.I.C. 2000-130, N.S. Reg. 52/2000; O.I.C. 2013-65, N.S. Reg. 53/2013. - (2) An employer shall, where reasonably practicable, comply with the requirements of the latest version of CSA standard CSA-W 117.2, 'Safety in Welding, Cutting and Allied Processes'. Subsection 109(2) amended: O.I.C. 2000-130, N.S. Reg. 52/2000; O.I.C. 2013-65, N.S. Reg. 53/2013. 110 - (1) An employer shall ensure that welding or allied process equipment is erected, installed, assembled, started, operated, used, handled, stored, stopped, inspected, serviced, tested, cleaned, adjusted, carried, maintained, repaired and dismantled in accordance with the manufacturer's specifications. - (2) An employer shall ensure that a welding or allied process is performed by a competent person. Subsection 110(2) amended: O.I.C. 2013-65, N.S. Reg. 53/2013. 111 - (1) An employer shall ensure that, before a welding or allied process is commenced, the person who is to operate the equipment has inspected the area surrounding the operation to ensure that adequate precautions have been taken - (a) to remove from the area all hazardous material or processes that produce combustible, flammable or explosive material, dust, gas or vapour; and - (b) to prevent fire or explosion. - (2) Where a welding or allied process is performed above an area where a person may be present, an employer shall ensure that adequate means of protection are taken to pro…

[8] Safety Standards for General Safety and Health Standards (Chaper 296-24 WAC)

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\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ - Note: In gas welding or oxygen cutting where the torch produces a high yellow light, is not desirable to use a filter or lens that absorbs the yellow or sodium line in the visible light of the operation. - (j) All filter lenses and plates must meet the test for transmission of radiant energy prescribed in ANSI Z 87.1-1968--American National Standard Practice for Occupational and Educational Eye and Face Protection. - (3) Protection from arc welding rays . Where the work permits, the welder should be enclosed in an individual booth painted with a finish of low-reflectivity such as zinc oxide (an important factor for absorbing ultraviolet radiations) and lamp black, or must be enclosed with noncombustible screens similarly painted. Booths and screens must permit circulation of air at floor level. You must protect workers or other persons adjacent to the welding areas from the rays by noncombustible or flameproof screens or shields or they must be required to wear appropriate goggles. [Statutory Authority: RCW 49.17.010, .040, .050, and .060. 15-24-100 (Order 15-04), § 296-24-[redacted postal code], filed 12/01/2015, effective 01/05/2016. Statutory Authority: RCW 49.17.010, .040, .050. 01-11-038 (Order 99-36), § 296-24-[redacted postal code], filed 05/09/01, effective 09/01/01. Statutory Authority: Order 73-5, 296-24-[redacted postal code], filed 5/9/73 and Order 73-4, 296-24-[redacted postal code], filed 5/7/73.] ## WAC 296-24-[redacted postal code] Protective clothing. - (1) General requirements . You must protect employees exposed to the hazards created by welding, cutting, or brazing operations by personal protective equipment in accordance with the requirements of chapter 296-24 WAC, Part I, and WAC [redacted identifier]. Appropriate prote…

[9] Safety Standards for General Safety and Health Standards (Chaper 296-24 WAC)

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\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ - (iii) Excessive oil vapor. - (iv) Flammable gases. - (v) Abnormal vibration or shock. - (vi) Excessive dust. - (vii) Weather. - (viii) Unusual seacoast or shipboard conditions. - (2) Voltage . Open circuit (no load) voltages of arc welding and cutting machines should be as low as possible consistent with satisfactory welding or cutting being done. You must not exceed the following limits: - (a) Alternating-current machines. - (i) Manual arc welding and cutting--80 volts. - (ii) Automatic (machine or mechanized) arc welding and cutting--100 volts. - (b) Direct-current machines. - (i) Manual arc welding and cutting--100 volts. - (ii) Automatic (machine or mechanized) arc welding and cutting--100 volts. - (c) When special welding and cutting processes require values of open circuit voltages higher than the above, you must provide means to prevent the operator from making accidental contact with the high voltage by adequate insulation or other means. Note: For a.c. welding under wet conditions or warm surroundings where perspiration is a factor, the use of reliable automatic controls for reducing no load voltage is recommended to reduce the shock hazard. ## (3) Design . - (a) A controller integrally mounted in an electric motor driven welder must have capacity for carrying rated motor current, must be capable of making and interrupting stalled rotor current of the motor, and may serve as the running overcurrent device if provided with the number of overcurrent units as specified by chapter 296-24 WAC Part L, and WAC [redacted identifier]. Starters with magnetic undervoltage release should be used with machines installed more than one to a circuit to prevent circuit overload caused by simultaneously starting of several motors upon return of voltage. - (b…

[10] Safety Standards for General Safety and Health Standards (Chaper 296-24 WAC)

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\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ during overhead welding or cutting operations. Leather skull caps may be worn under helmets to prevent head burns. - (g) For overhead welding and cutting, or welding and cutting in extremely confined spaces, ear protection is sometimes desirable. - (h) Where there is exposure to sharp or heavy falling objects, or a hazard of bumping in confined spaces, hard hats or head protectors must be used. [Statutory Authority: RCW 49.17.010, .040, .050, and .060. 15-24-100 (Order 15-04), § 296-24-[redacted postal code], filed 12/01/2015, effective 01/05/2016. Statutory Authority: RCW 49.17.010, .040, .050. 01-11-038 (Order 99-36), § 296-24-[redacted postal code], filed 05/09/01, effective 09/01/01. Statutory Authority: Chapter 49.17 RCW. 94-20-057 (Order 94-16), 296-24-[redacted postal code], filed 9/30/94, effective 11/20/94; Order 73-5, 296-24-[redacted postal code], filed 5/9/73 and Order 73-4, 296-24-[redacted postal code], filed 5/7/73.] ## WAC 296-24-[redacted postal code] Work in confined spaces. - (1) General . As used herein confined space is intended to mean a relatively small or restricted space such as a tank, boiler, pressure vessel, or small compartment of a ship. - (2) Ventilation . Ventilation is a prerequisite to work in confined spaces. For ventilation requirements see WAC 296-24-[redacted postal code] through 296-24-[redacted postal code]. - (3) Securing cylinders and machinery . When welding or cutting is being performed in any confined spaces you must leave the gas cylinders and welding machines on the outside. Before operations are started, you must securely block heavy portable equipment mounted on wheels to prevent accidental movement. - (4) Lifelines . Where a welder must enter a confined space through a manhole or other smal…

[11] Safety Standards for General Safety and Health Standards (Chaper 296-24 WAC)

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\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ - (1) Hoods . Freely movable hoods intended to be placed by the welder as near as practicable to the work being welded and provided with a rate of airflow sufficient to maintain a velocity in the direction of the hood of 100 linear feet per minute in the zone of welding when the hood is at its most remote distance from the point of welding. The rates of ventilation required to accomplish this control velocity using a 3-inch wide flanged suction opening are shown in the following table: - (2) Fixed enclosure . A fixed enclosure with a top and not less than 2 sides which surround the welding or cutting operations and with a rate of airflow sufficient to maintain a velocity away from the welder of not less than 100 linear feet per minute. [Statutory Authority: RCW 49.17.010, .040, .050, and .060. 15-24-100 (Order 15-04), § 296-24-[redacted postal code], filed 12/01/2015, effective 01/05/2016. Order 73-5, 296-24-[redacted postal code], filed 5/9/73 and Order 73-4, 296-24-[redacted postal code], filed 5/7/73.] ## WAC 296-24-[redacted postal code] Ventilation in confined spaces. - (1) Air replacement . You must adequately vent all welding and cutting operations carried on in confined spaces to prevent the accumulation of toxic materials or possible oxygen deficiency. This applies not only to the welder but also to helpers and other personnel in the immediate vicinity. All air replacing that withdrawn must be clean and respirable. - (2) Airline respirators . In such circumstances where is not impossible to provide such ventilation, you must use airline respirators or hose masks approved for this purpose by the National Institute for Occupational Safety and Health (NIOSH) under 42 CFR Part 84. - (3) Self-contained units . In areas immediately hazardou…

[12] Safety Standards for General Safety and Health Standards (Chaper 296-24 WAC)

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\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ hour or overnight. Where practicable, you must also remove the torch and hose from the confined space. [Statutory Authority: RCW 49.17.010, .040, .050, and .060. 15-24-100 (Order 15-04), § 296-24-[redacted postal code], filed 12/01/2015, effective 01/05/2016. Order 73-5, 296-24-[redacted postal code], filed 5/9/73 and Order 73-4, 296-24-[redacted postal code], filed 5/7/73.] ## WAC 296-24-700 Protection of employees. [Order 73-5, 296-24-700, filed 5/9/73 and Order 73-4, 296-24-700, filed 5/7/73.] ## WAC 296-24-[redacted postal code] General. - (1) Railing . You must protect a welder or helper working on platforms, scaffolds, or runways against falling. This may be accomplished by the use of railings, safety belts, life lines, or some other equally effective safeguards. - (2) Welding cable . Welders must place welding cable and other equipment so that is clear of passageways, ladders, and stairways. [Statutory Authority: RCW 49.17.010, .040, .050, and .060. 15-24-100 (Order 15-04), § 296-24-[redacted postal code], filed 12/01/2015, effective 01/05/2016. Order 73-5, 296-24-[redacted postal code], filed 5/9/73 and Order 73-4, 296-24-[redacted postal code], filed 5/7/73.] ## WAC 296-24-[redacted postal code] Eye protection. ## (1) Selection . - (a) You must use helmets or hand shields during all arc welding or arc cutting operations, excluding submerged arc welding. Goggles should also be worn during arc welding or cutting operations to provide protection from injurious rays from adjacent work, and from flying objects. The goggles may have either clear or colored glass, depending upon the amount of exposure to adjacent welding operations. You must provide helpers or attendants with proper eye protection. - (b) You must use goggles or oth…

[13] Rules for the Administration of the Oregon Safe Employment Act (General Occupational Safety and Health, Division 2, OSHA Oregon)

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<!-- image --> 2BDivision 2 Oregon Administrative Rules Oregon Occupational Safety and Health Division Note: In gas welding or oxygen cutting where the torch produces a high yellow light, it is desirable to use a filter or lens that absorbs the yellow or sodium line in the visible light of the operation. - (I) Filter lenses must meet the test for transmission of radiant energy prescribed by any of the consensus standards listed in 29 CFR 1910.133(b)(1). - (iii) Protection from arc welding rays. Where the work permits, the welder should be enclosed in an individual booth painted with a finish of low reflectivity, such as zinc oxide (an important factor for absorbing ultraviolet radiations) and lamp black, or shall be enclosed with noncombustible screens similarly painted. Booths and screens shall permit circulation of air at floor level. Workers or other persons adjacent to the welding areas shall be protected from the rays by noncombustible or flameproof screens or shields or shall be required to wear appropriate goggles. - (3) Protective clothing - General requirements. Employees exposed to the hazards created by welding, cutting, or brazing operations shall be protected by personal protective equipment in accordance with the requirements of 1910.132 of this part. Appropriate protective clothing required for any welding operation will vary with the size, nature and location of the work to be performed.

[14] Kobelco SK235SR-2, SK235SRLC-2 Operation Manual

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## ［ 1. SAFETY PRECAUTIONS ］ ## P. GENERAL GUIDELINES FOR WELDING Welding work must be performed by a certified welder with sufficient experience. In addition, safety practices must be followed by any personnel involved in such work. Identify all cracks to be repaired or areas to be welded by thoroughly cleaning the suspected surface, remove paint, and check with dye penetrant or magnetic particle testing. The life expectancy of the welded area depends on the work quality and the attention given to details during welding. - ・ Turn starter key to "OFF" position. - ・ Remove negative (-) cable from battery terminal to turn off the current. - ・ Attach welder ground cable with 1 m {3.3 ft} from component being welded. If grounding cable is attached near electric parts/connectors, these electric parts/connectors may cause damaging. - ・ Attach welder ground cable near the weld area. Futhermore, the cable attached are is to be positioned at the same welding area. - ・ Make sure that neither bearing nor seal are there between the welder ground and the weld area. - ・ Do not attach the welder ground cable to the near attachment pin and/or cylinder. It causes the damage of plating. - ・ Remove paint from any surface to be welded. Painted surfaces produce unhealthy gasses when welded. - ・ Always wear protective clothing appropriate to the welding, and use protective equipment for the welding job. - ・ Perform work in a well ventilated areas. - ・ Clear the flammable items and provide the fire extinguisher. <!-- image --> ## AVOID FIRE HAZARDS - -Provide a fully charged fire extinguisher at all times while performing grinding, heating, or welding. -Clean oil and/or flammable materials from any surface to be cut. - -Protect all flammable parts and surfaces from sparks and/or flames Perform work in a well ventilated area. - -Keep sparks and flames away from paint and/or solvent. - -Keep away sparks and flames from cylinder rods, seals, electrical wires, and/or hydraulic hoses…

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