Section 112.45 - Dike Penetrations(1) No dike penetrations for piping or other purposes may be added after September 14, 1990.(2) Any dike penetrations in place as of September 14, 1990, shall be constructed of or lined with pipe capable of withstanding cryogenic temperature and any dike penetration in place as of September 14, 1990, shall be equipped with a valve designed to close automatically on exposure to cryogenic temperatures. Such valve shall also be capable of being closed remotely from outside the dike and capable of withstanding cryogenic temperatures. Such valve shall be closed except when in use for its intended purpose.Amended by Mass Register Issue 1432, eff. 12/11/2020.