Welding workshops - 4. hazardous operations and objectives

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		Welding workshops - 4. hazardous operations and objectives
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Description	The list is based on the following regulations
The supervisor must use the checklist together with the welder when planning and organising work in welding workshops. The checklist is also intended to support the manager in cooperation (between employers and employees) with the safety representative in the work of developing routines for safer work.

Hazardous operations

Question	Risk assessment:
	Low	Medium	High
1. Is the tank container always cleaned before welding begins if it contains solvents, propellants, etc., and welding is being performed? (Note: sometimes you need to check with an explosimeter.)
2. When welding in confined and poorly ventilated areas,
a) Are respirators always used with P3 filters or compressed air-fed respirators? (Note: otherwise there is a risk of welder chills.)
b) Is spot extraction easily accessible and easy to use (preferably integrated into the welding gun)?
c) If a mobile smoke eater is used, is the exhaust air discharged outside the space? (Note: The smoke eater only removes particles, welding gases are not separated, so the exhaust air should be discharged outside the confined space.)
d) Is everyone aware that it is prohibited to use free-burning gas flames for heating? (Risk of deadly high levels of carbon monoxide.)
e) Is the space well-ventilated when using shielding gas? (Note: The shielding gas can displace the oxygen if the room is poorly ventilated, which can be fatal.)
3. When welding inside very hot objects?
a) For example, are heat-insulating gloves and some type of ventilated suit with a hood made of fireproof material used?
b) Does the welder have access to thermal insulation that can be used in low-lying welding?
4. If welding occurs, are there any specific safety measures that need to be taken into consideration?
a) Can positioners, etc., be used to better position the object and avoid welding?
b) Is a welding chair being used?
c) Is there protection against cold and hot surfaces if necessary?
5. If thorium alloy tig electrodes are used
a) Are the electrodes stored in sealed containers?
b) Is welding with alternating current avoided?
c) Is the grinding dust extracted and treated as environmentally hazardous waste when grinding or welding?
6. When welding or cutting on the workpiece, is it possible to remove the paint from the surface that may be heated by the welding or cutting?
7. All welders are aware of the risks associated with (bwe).
a) Welding of surface-treated or oily workpieces?
b) Is there a risk of phosgene and other dangerous substances forming when welding in containers containing, for example, chlorinated solvents? (Note: risk of formation of the combat gas phosgene and other dangerous substances.)
c) Gas welding in confined spaces can pose a serious risk of dangerously high levels of carbon monoxide.
d) Welding in special materials, e.g. galvat (zinc chills), aluminium (ozone formation), stainless (carcinogenic chromium in the welding fumes), and non-alloy steel (manganese that can affect fine motor skills)?
8. Is there a clean air flow or cooling?
a) With oxygen? (Note: Dangerous! High fire risk.)
b) With compressed air (or other gases from gas cylinders)? (Swirls up and spreads dust.)
9. Are the workpieces in a secluded and well-ventilated area?
10. If the dispersion of air pollutants poses potential health risks.
a) Is the paint that emits dangerous air pollutants being replaced?
b) Are respiratory protective devices used?
11. Are brushes washed in a ventilated washing machine or fume cupboard? (Note: not open in buckets of solvents.)
12. Are newly painted workpieces placed in a well-ventilated drying room immediately after painting?
13. Are safety data sheets available for all chemical products present and used in the business and marked with hazard pictograms?
14. Are there work and safety instructions for such work that can entail serious risks if you were to work in the wrong way or fail to use protective equipment, e.g. aiming and welding?
15. undergo unhealthy workload.
a) Are you exposed to noise above the limit value?
b) Are you at risk of hearing damage?
c) Are you exposed to vibrations above the limit value or if vibration damage is suspected?
d) Are you referring to welds in goods that are or are suspected to be painted with polyurethane lacquer?

Other Here you can note risks that need to be addressed that are not included in the checklist

More checklists can be found at www.prevent.se/checklistor

Welding workshops - 4. hazardous operations and objectives

General information about the checklist

Hazardous operations (1-15)

Is the tank container always cleaned before welding begins if it contains solvents, propellants, etc., and welding is being performed? (Note: sometimes you need to check with an explosimeter.)

When welding in confined and poorly ventilated areas,

a) Are respirators always used with P3 filters or compressed air-fed respirators? (Note: otherwise there is a risk of welder chills.)

b) Is spot extraction easily accessible and easy to use (preferably integrated into the welding gun)?

c) If a mobile smoke eater is used, is the exhaust air discharged outside the space? (Note: The smoke eater only removes particles, welding gases are not separated, so the exhaust air should be discharged outside the confined space.)

d) Is everyone aware that it is prohibited to use free-burning gas flames for heating? (Risk of deadly high levels of carbon monoxide.)

e) Is the space well-ventilated when using shielding gas? (Note: The shielding gas can displace the oxygen if the room is poorly ventilated, which can be fatal.)

When welding inside very hot objects?

a) For example, are heat-insulating gloves and some type of ventilated suit with a hood made of fireproof material used?

b) Does the welder have access to thermal insulation that can be used in low-lying welding?

If welding occurs, are there any specific safety measures that need to be taken into consideration?

a) Can positioners, etc., be used to better position the object and avoid welding?

b) Is a welding chair being used?

c) Is there protection against cold and hot surfaces if necessary?

If thorium alloy tig electrodes are used

a) Are the electrodes stored in sealed containers?

b) Is welding with alternating current avoided?

c) Is the grinding dust extracted and treated as environmentally hazardous waste when grinding or welding?

When welding or cutting on the workpiece, is it possible to remove the paint from the surface that may be heated by the welding or cutting?

All welders are aware of the risks associated with (bwe).

a) Welding of surface-treated or oily workpieces?

b) Is there a risk of phosgene and other dangerous substances forming when welding in containers containing, for example, chlorinated solvents? (Note: risk of formation of the combat gas phosgene and other dangerous substances.)

c) Gas welding in confined spaces can pose a serious risk of dangerously high levels of carbon monoxide.

d) Welding in special materials, e.g. galvat (zinc chills), aluminium (ozone formation), stainless (carcinogenic chromium in the welding fumes), and non-alloy steel (manganese that can affect fine motor skills)?

Is there a clean air flow or cooling?

a) With oxygen? (Note: Dangerous! High fire risk.)

b) With compressed air (or other gases from gas cylinders)? (Swirls up and spreads dust.)

Are the workpieces in a secluded and well-ventilated area?

If the dispersion of air pollutants poses potential health risks.

a) Is the paint that emits dangerous air pollutants being replaced?

b) Are respiratory protective devices used?

Are brushes washed in a ventilated washing machine or fume cupboard? (Note: not open in buckets of solvents.)

Are newly painted workpieces placed in a well-ventilated drying room immediately after painting?

Are safety data sheets available for all chemical products present and used in the business and marked with hazard pictograms?

Are there work and safety instructions for such work that can entail serious risks if you were to work in the wrong way or fail to use protective equipment, e.g. aiming and welding?

undergo unhealthy workload.

a) Are you exposed to noise above the limit value?

b) Are you at risk of hearing damage?

c) Are you exposed to vibrations above the limit value or if vibration damage is suspected?

d) Are you referring to welds in goods that are or are suspected to be painted with polyurethane lacquer?

Welding workshops - 4. hazardous operations and objectives

Hazardous operations