Gas Cylinder Safety Rules 1. ALL tanks must be secured with a tank tie- down in the lab. (NO EXCEPTIONS) 2.Tanks may ONLY be transported with a securely tightened metal cap (so keep track of your lab’s tank caps). 3.Tanks may ONLY be transported with an approved cart which has a strap or chain to immobilize the tank. *Failure to follow these 3 simple safety rules can result in stiff ﬁnes from the Safety Ofﬁce!