Fail safe secondary containment system for a cryogenic...

Details Fail safe secondary containment system for a cryogenic... Fail safe secondary containment system for a cryogenic...

2006-03-21

2006-03-21

Douglas, Steven O. (Department: 3751)

Fluent material handling, with receiver or receiver coacting mea

Filling means with receiver or receiver coacting means

Drip prevention

C141S086000, C138S114000, C062S050700

Reexamination Certificate

active

07013935

ABSTRACT:
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.

REFERENCES:
patent: 5622212 (1997-04-01), Berger et al.
patent: 6094922 (2000-08-01), Ziegler
patent: 6647733 (2003-11-01), Cooper

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