Fail safe secondary containment system for a cryogenic liquid transport pipeline

• Main Author: BONN JOHN W
• Format: Patent
• Language: English
• Published: 21.03.2006
• Subjects: BLASTING; CONVEYING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HANDLING THIN OR FILAMENTARY MATERIAL; HEATING; JOINTS OR FITTINGS FOR PIPES; LIGHTING; MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGINGARTICLES OR MATERIALS; MEANS FOR THERMAL INSULATION IN GENERAL; MECHANICAL ENGINEERING; PACKING; PERFORMING OPERATIONS; PIPES; STORING; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; THERMAL INSULATION IN GENERAL; TRANSPORTING; UNPACKING; WEAPONS

A fail safe secondary containment system for a cryogenic liquid transport pipeline spool having a mainline liquid transport pipe and a secondary containment pipe which overlies the mainline liquid transport pipe and is affixed to the outer surface of the mainline liquid transport pipe to form a sealed annular containment space therebetween, has a cap mounted on the secondary containment pipe to provide a sealed tertiary space. A first check valve has an inlet connected to the secondary containment space for receiving fluid therefrom and an outlet connected to the tertiary containment space and a second check valve has an inlet connected to the tertiary containment space for receiving fluid therefrom and an outlet connected to the inside of the mainline liquid transport pipe.