Liquefied petroleum gas pressure and low temperature storage system

Claim 1

A STORAGE SYSTEM FOR THE STORAGE OF AN INTERMITTENTLY DELIVERED TENDER OF A LIQUEFIED, NORMALLY GASEOUS PRODUCT, INCLUDING AN INITIAL PRODUCT RECEIVING FACILITY COMPRISING AN ABOVE-GROUND REFRIGERATED STORAGE VESSEL ADAPTED TO RECEIVE THE COMPLETE TENDER OF SAID PRODUCT AND STORE IT AT CONDITIONS NOT SUBSTANTIALLY IN EXCESS OF DELIVERY CONTIONS OF TEMPERATURE AND PRESSURE, A FIRST VAPOR COMPRESSION REFRIGERATION SYSTEM COOPERATING WITH SAID STORAGE VESSEL AND MAINTAINING THE DESIRED TEMPERATURE AND PRESSURE IN SAID VESSEL, AND A STORAGE FACILITY FOR RETAINING SAID PRODUCT AT NOT GREATER THAN ABOUT ATMOSPHERIC PRESSURE AND AT A SUBATMOSPHERIC TEMPERATURE COMPRISING A LOW PRESSURE STORAGE TANK, CONDUIT MEANS FOR TRANSFERRING SAID PRODUCT AT SUPER-ATMOSPHERIC PRESSURE FROM SAID INITIAL STORAGE VESSEL TO SAID STORAGE TANK, AN INTERMEDIATE FLASH VAPORIZATION VESSEL, MEANS FOR CONTROLLING THE FLOW OF PRODUCT THROUGH SAID CONDUIT MEANS TO SAID INTERMEDIATE FLASH VAPORIZATION VESSEL, MEANS FOR INSTANTANEOUSLY REDUCING THE PRESSURE OF TRANSFERRED PRODUCT INTO SAID FLASH VAPORIZATION VESSEL, CONDUIT MEANS FOR TRANSFERRING LIQUID PRODUCT FROM SAID FLASH VAPORIZATION VESSEL, MEANS FOR FLASH VAPORIZING SAID LIQUID PRODUCT INTO SAID STORAGE TANK, AND A SECOND VAPOR COMPRESSION REFRIGERATION MEANS ASSOCIATED WITH SAID TANK FOR PROCESSING GASEOUS PRODUCT EFFLUENT THEREFROM WHEREBY A COOLED LIQUID PRODUCT IS PRODUCED AND RETURNED TO SAID TANK AND FLASH VAPORIZED THEREIN, SAID SECOND REFRIGERATION SYSTEM BEING A TWO STAGE SYSTEM.