Secondary barrier construction for vessels carrying spherical lo

Details Secondary barrier construction for vessels carrying spherical lo Secondary barrier construction for vessels carrying spherical lo

1976-09-22

1978-05-16

Kelmachter, Barry L.

Ships

Building

Freighters

220448, B63B 368, B63B 2516

Patent

active

040892859

ABSTRACT:
A secondary insulating barrier for protecting the hold of a ship below a spherical low temperature liquified gas storage tank installed therein comprises at least two layers of rigid foam synthetic resin sprayed on the hold plates and covered by a layer of glass mesh and adhesive. Alternatively, the layers of synthetic resin, glass mesh and adhesive are applied to plywood attached to the hold plates by joists, thus forming an air space between the secondary barrier and the hold plates. Where the hold plates have a multi-surface construction, laminated rigid urethane foam blocks are butted end-to-end and are bonded to each other and to the plywood sheets at the corners between adjacent hold plates, the spray-formed layers are applied between the blocks, and the whole is covered by a protective layer of glass mesh and adhesive.

REFERENCES:
patent: 3595424 (1971-07-01), Jackson
patent: 3895159 (1975-07-01), Yoshimura
patent: 3903824 (1975-09-01), Laverman et al.
patent: 3922987 (1975-12-01), Tornay
patent: 3927788 (1975-12-01), Zinniger et al.

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