Welding with gas - Prevent Checklists

	Document name
		Welding with gas
Area/location	Date
	Invalid Date
Approved by	Participants

Description	The list is based on the following regulations
The checklist addresses questions about equipment and ventilation, etc. in gas welding.	AFS 2023:1 §11 AFS 2023:10 7§5 AFS 2023:10 7§10 AFS 2023:10 7§11 AFS 2023:10 7§14 AFS 2023:10 7§16 AFS 2023:10 10§47 AFS 2023:10 7§18 AFS 2023:10 9§8 AFS 2023:10 9§9 AFS 2023:10 12§8 AFS 2023:11 2§12 AFS 2023:11 15§4 AFS 2023:11 15§7 AFS 2023:11 15§8 AFS 2023:1 §10 AFS 2023:10 6§5 AFS 2023:10 6§6 AFS 2023:11 2§11 AFS 2023:12 6§12

Welding with gas

Question	Yes	No	N/A	Risk assessment:			Risk description
				Low	Medium	High
1. If gas welding occurs, what safety measures should be taken?
a) Are the tightness of fuel and oxygen hoses and fittings regularly checked?
b) Are the gas cylinders placed in racks or gas carts during work?
2. Are all welding torches equipped with a check valve between the welding handle and hose for fuel gas and oxygen, as well as a flashback arrestor when connecting the hose?
3. If venting of gas-welded pipes is to be carried out, the work is carried out safely, e.g.
a) By leading the exhaust air out via a hose connected to the purge valve, is the air led outside?
b) By using carbon monoxide gas detectors to quickly detect if carbon monoxide levels are getting too high?
c) Is no one allowed to stay in the area where the exhaust air is directed until the space has been ventilated before anyone enters?
4. Is everyone aware that it is prohibited to use free-burning gas flames for heating?
5. Are gas pipes marked to prevent confusion between oxygen and fuel gas during gas welding?

Ventilation

Question	Yes	No	N/A	Risk assessment:			Risk description
				Low	Medium	High
6. Can the risk of strong smoke development during welding be reduced by changing the welding method to one that generates less smoke?
7. Is the space well ventilated when using shielding gas?
8. Is compressed air breathing equipment used if the space is so cramped and poorly ventilated and there is so much welding gas that there is a risk of suffocation or poisoning?
9. Is there a functioning and efficient extraction system for welding fumes, e.g. a fume-eater, that can be moved along?
10. Are there well-functioning routines in place to ensure that the welder always receives welding equipment with integrated extraction in the welding gun or smoke eater?

Work equipment

Question	Yes	No	N/A	Risk assessment:			Risk description
				Low	Medium	High
11. Verified that.
a) Is the welding unit flawless?
b) Is the reconductor connected correctly?
c) Is this rule being followed, with welding cables not allowed to hang over your shoulder or using the cable reel as a seat?
d) Are the electrical cables, including reconductors, routed in a way that prevents them from being damaged?
e) Is the workplace dry?
f) Is the electrode holder never placed on any metallic object that is connected to the electrical circuit?
12. If welding occurs and cannot be avoided, should something be used to sit on, e.g. a stable stool, if possible?
13. If welding is to be done inside very hot objects, what measures should be taken to ensure the safety of the workers?
a) For example, are heat-insulating gloves and some type of ventilated suit with a hood made of fireproof material used?
b) Is there access to thermal insulation that can be used in cold welding?

Tig

Question	Yes	No	N/A	Risk assessment:			Risk description
				Low	Medium	High
14. 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?

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

© Prevent – Arbetsmiljö i samverkan Svenskt Näringsliv, LO och PTK

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