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Method of Leak Detection for Direct Buried Storage of Hydrogen Gas

IP.com Disclosure Number: IPCOM000028932D
Publication Date: 2004-Jun-08
Document File: 1 page(s) / 73K

Publishing Venue

The IP.com Prior Art Database

Abstract

This disclosure provides a system to monitor leak rates of direct buried gaseous hydrogen storage systems.

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Method of Leak Detection for Direct Buried Storage of Hydrogen Gas

This disclosure provides a system to monitor leak rates of direct buried gaseous hydrogen storage systems. 

 
 

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The disclosure includes a method of collecting hydrogen gas if it has escaped from a direct buried hydrogen storage container.  A porous fill material (1) (e.g. sand) that allows the hydrogen gas to pass through it to a collection structure above the underground storage container.  The collection structure (2) is made of a non-porous material that covers the underground storage unit(s) and may be integrated into the fueling pad.  The collection structure is designed to direct the escaped hydrogen to one or more vent locations (3).

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The disclosure includes a system to monitor the hydrogen gas concentration (4) at the collection points in the collection structure.  The monitoring system senses the concentration of hydrogen gas and alerts the site operator when a configurable concentration threshold has been exceeded.

The disclosure includes a system to vent (5) the escaped hydrogen gas away from ignition sources.  The vent consists conduit system with an inlet at each collection point in the collection structure and an outlet sufficiently removed for ignition sources.  The outlet is protected to prevent inadvertent blockage.

The disclosure includes a system to isolate and monitor the leak rates of individual hydrogen tanks (6) within the underground storage system.  Each tank in the sys...