Cryogenic trench/trough apparatus and method

A method of installing a trench for containing a cryogenic spill, comprising the steps of:

• a) construction of multiple precast concrete sections, each section having a bottom wall and spaced apart side walls connected to and extending up from said bottom wall, each section having end portions;
• b) applying a layer of cryogenic insulating material to the bottom wall and side walls of each said concrete section;
• c) connecting the concrete sections together using connections that join one end portion of a first said concrete section to an end portion of a second concrete section;
• d) applying a non-sag filler to the connections of step “c”;
• e) wherein the connections of step “c” include an engineering cloth;
• and
• f) wherein the cryogenic insulating material is applied by spraying.

A method of installing a trench for containing a cryogenic spill, comprising the steps of:

• a) constructing multiple precast concrete sections, each section having a bottom wall and spaced apart side walls connected to and extending up from said bottom wall;
• b) wherein in step “a” each section has end portions that enable connection to another said concrete section;
• c) applying a cryogenic insulating layer to the bottom wall and side walls of each said concrete section;
• d) connecting the concrete sections together using connections of one end portion to another end portion;
• e) wherein in step “d” the connection includes spacing the said end portions apart to form a gap and filling the gap with a seal;
• f) wherein the seal includes a butyl rubber elastomer;
• g) wherein the seal of step “e” includes an engineering cloth;
• and
• h) wherein the cryogenic insulating layer is spray-applied to the walls.