COMMERCIAL TIGHTNESS TEST pt2 

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Disclaimer:
This video is for qualified and competent commercial gas safe registered engineers only.
Do not take it as advice, do your own due diligence before carrying out any work.
Please ensure that you are gas safe registered and follow the current regulations.
Carry out your safety checks. Your Flues, Air, Gas, Safety device checks/ 26.9 checks.
Do an overall risk assessment and wear PPE when necessary.
Safe Isolation Procedure & electric safety:
Identify the source(s) of supply. Test your digital multimeter / approved voltage indicator & volt stick to make sure that it is working properly. Isolate the supply, disconnecting the system from the mains. Place the voltage free wires into a terminal block/wago. Secure or “lock off” the isolation using your safety padlock, preventing any tampering. Put do not use signs up on the switch you have isolated/locked off. It is good practice to wear gloves, rubber sole boots, have an electrical safety mat underneath you whilst working on high voltage and use VDE tools. Ensure that you are qualified & / or competent to work on high voltage.
Refer to your manufacturer instructions.
These videos have been made in good faith to encourage working standards, mindsets and knowledge in the industry.