Closed Use a screwdriver . Make sure they are in right position when checking out of lab. There are big holes in the yellow work gloves in the thumb and middle fingers. Not good when handling hot things. The idea of a preheat is not possible unless water flow is also present.
Suggestion is to add the major safety precaution to the objective handouts.
On cooling tower, water leak coming from above H20 flow meter Tightened hose clamps. Still a small amount of leakage. Hoses look old, may need replacing. Valve isn't labeled. Valve is leaking steam, very minor.