Cryogenic insulation system

Claim 1

A CONTAINER FOR THE STORAGE AND/OR TRANSPORTATION OF CRYOGENIC CARGOES AT ATMOSPHERIC PRESSURE COMPRISING (A) A CLOSED SUPPORTING STRUCTURE, (B) A PLURALITY OF DIMENSIONALLY STABLE, STEPPED INSULATING PANELS, (C) SAID PANELS BEING CONTIGUOUSLY ARRAYED AND SEALED TO DEFINE A CONTINUOUS, LIQUID AND GAS IMPERMEABLE SECONDARY BARRIER, (D) A PLURALITY OF EFFECTIVELY DIMENSIONALLY STABLE PRIMARY BARRIER PANELS OF LAMINATED CONSTRUCTION INCLUDING A METAL FOIL AND FIBERGLASS REINFORCED POLYESTER SHEET, (E) SAID PRIMARY BARRIER PANELS BEING PREFORMED TO DEFINE CONCAVITIES AT THE OUTER SURFACES THEREOF, (F) MECHANICAL FASTENING MEANS SECURING SAID PRIMARY BARRIER PANELSD TO SAID SECOND BARRIER PANELS AT PREDETERMINED SPACED POINTS, (G) DIMENSIONALLY STABLE MEANS SEALING THE JOINTS BETWEEN ADJACENT PRIMARY BARRIER PANELS, (H) SAID CONCAVITIES IN COOPERATION WITH THE INNER FACES OF SAID SECONDARY BARRIER PANELS FORMING CHANNELS IN COMMUNICATION WITH THE INTERFACE BETWEEN SAID PRIMARY AND SECONDARY BARRIERS, AND (I) GAS DETECTION MEANS IN COMMUNICATION WITH SAID CHANNELS AND ADAPTED TO SENSE THE PRESENCE OF GAS THEREIN.