Action
Final rule; response to petition for reconsideration; limited stay of implementation date; correction; request for comments.
Summary
On May 24, 1999, RSPA published a final rule to revise regulations applicable to the transportation and unloading of liquefied compressed gases. The revisions included new inspection, maintenance, and testing requirements for cargo tank discharge systems; revised attendance requirements applicable to liquefied petroleum gas and anhydrous ammonia; and revised requirements for cargo tank emergency discharge control equipment to provide a clear performance standard for passive emergency discharge control equipment that shuts down unloading operations without human intervention. The revised requirements also provide for a remote capability for certain cargo tanks to enable a person attending the unloading operation to shut off the flow of product when away from the motor vehicle during delivery. This document responds to a petition for reconsideration, delays implementation of one provision of the final rule as it applies to chlorine unloading operations, and corrects an instruction in the final rule.