Storage vessel

US5752616A · kind A · utility

Assignee

• Prime Safe Limited · GB

Inventor

• Charles Watkinson · Westfield, GB

Key dates

• Filing date: Sep 28, 1995
• Grant date: May 19, 1998
• Expiry date: Sep 28, 2015

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B65D90/507
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

A method of applying a laminate (4, 5, 6) to one side of a wall of a storage vessel (1) and which comprises: securing a first substantially impermeable layer (4) to said one side of the wall; securing an intermediate liquid pervious layer (5) to the exposed side of said first layer (4); and, securing a second substantially impermeable layer (6) to the exposed side of the intermediate layer (5) so as to define a fluid receiving space between the first and second layers (4, 6) in which a monitoring fluid can be received to permit monitoring of the sealing integrity of the storage vessel. The intermediate layer (5) includes a liquid or fluid pervious layer (5a) e.g. of open celled foam, which is bonded to the first impermeable layer (4) and a semi-impermeable layer (5b) e.g. of paper which faces and which becomes bonded to the second impermeable layer (6) upon at least partial impregnation by the material of the layer (6). The layer (5b), therefore performs a dual function, in that it assists in uniting the component layers of the laminate, and also prevents the material making-up the second impermeable layer (6) from impregnated or clogging-up the pores of the pervious layer (5a).