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DISCLAIMER: HVAC School is NOT an official OSHA safety training resource! Although we provide safety tips in good faith, our website is not a substitute for safety training from an authorized OSHA training source.
Locking out and tagging equipment is one of the most basic safety procedures in general industry and maintenance work, especiall...
Deburring copper tubing (often called reaming) is the practice of running a blade around the inside of tubing after you cut it to remove the burr edge from the inside.
It's an important practice and should be performed whenever possible. Deburring reduces turbulence inside the lines, as burrs can cause turbulence.
HOWEVER…
...This photo is of a blower door test we performed at my own house using a Retrotec blower door. You will notice the 15-passenger van outside the window, which is a dead giveaway.
A blower door is used to measure the tightness of a building and is often discussed in terms of ...
Testo 557 vacuum gauge and Appion core removal tools shown
I've had a change of heart.
Back in the early 2000s, during the big construction boom, I did many system startups on residential units for a large ...
We already know that oxy-acetylene torches have a lot of safety considerations attached: don’t oil regulator threads, bubble-test your hoses, you get the picture. But there’s one more we haven’t really covered: the 1/7 rule (or 1/10 rule, based on the lat...