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A Double-contained Testable Half-barrel Sump

IP.com Disclosure Number: IPCOM000062718D
Original Publication Date: 1986-Nov-01
Included in the Prior Art Database: 2005-Mar-09
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Kelley, PW: AUTHOR [+2]

Abstract

The figure shows a design for chemical spill containment which uses two concentric 1/4" thick (or greater) steel vessels with an annular space in between. These steel vessels provide "double containment" for chemical spills. High integrity spill containment is assured by minimizing the number of welds (only two degree welds at ends of half-barrel), by improving the welds by using thicker steel, as well as providing an air pressurizable inner space to determine if primary and secondary steel vessels are leak free. If the steel containment is used for inorganics, the steel should be appropriately coated (both layers) for chemical resistance. An option for inorganics would be fused PVC or other durable plastic in the same configurations.

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A Double-contained Testable Half-barrel Sump

The figure shows a design for chemical spill containment which uses two concentric 1/4" thick (or greater) steel vessels with an annular space in between. These steel vessels provide "double containment" for chemical spills. High integrity spill containment is assured by minimizing the number of welds (only two degree welds at ends of half-barrel), by improving the welds by using thicker steel, as well as providing an air pressurizable inner space to determine if primary and secondary steel vessels are leak free. If the steel containment is used for inorganics, the steel should be appropriately coated (both layers) for chemical resistance. An option for inorganics would be fused PVC or other durable plastic in the same configurations. The air pressure between vessels should be low and highly regulated with an air pressure relief valve to prevent "over-pressurizing." If a leak occurs in the upper layer, the spill containment can be filled with water and repressurized. Air bubbles will indicate the hole/holes. If the spill containment can be automatically pumped out, the half-barrel can be small and easily replaceable. Added inspectability is provided with a sample tube between primary and secondary layers of containment.

Disclosed anonymously.

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