Wis. Admin. Code Department of Safety and Professional Services SPS 340.51
Liquefied petroleum gas systems shall be designed, constructed, installed, operated and maintained as specified in the following standards, except as otherwise provided in this chapter:
Wis. Admin. Code Department of Safety and Professional Services SPS 340.51
Section SPS 340.42 contains requirements for vehicle-fuel dispensing systems.
Section 101.16(4) (b) of the Statutes contains the following requirements: "(b) 1. A person who owns, leases, or uses a propane gas system and who is a customer of a retail supplier shall notify the retail supplier of propane gas for the propane gas system of any interruption in the operation of the propane gas system due to the replacement, modification, repair, or servicing of the propane gas system by any person other than the retail supplier. The customer shall provide the notice at least 7 days in advance of the interruption in the operation of the propane gas system, except as provided in subd. 2. The retail supplier, or the person replacing, modifying, repairing, or servicing the propane gas system, shall perform a check for leaks or other defects in the propane gas system before placing the propane gas system back into operation in the manner required by rule.
2. If the interruption of a propane gas system subject to subd. 1. is due to emergency repair or servicing, the customer shall provide the notice to the retail supplier as soon as possible and no later than 24 hours after the repair or servicing is completed."