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Hydrogen Buses to Return to Service

December 5, 2012 in Hydrogen by Rich Piellisch  |  No Comments

AC Transit Expects Station Re-Opening in Late January

Oakland, Calif.-based AC Transit plans to re-open its flagship hydrogen fueling station in Emeryville in late January, restoring its fleet of a dozen zero-emission fuel cell buses to revenue service. Linde is the hydrogen fueling system provider.

AC Transit will re-open its hydrogen fueling station in Emeryville, Calif. in late January. The facility will help support a dozen fuel cell buses and as many as 20 hydrogen cars per day. The station features Linde compression and delivery equipment capable of both 5,000- and 10,000-psi fueling, using hydrogen produced via a 510-kilowatt DC solar photovoltaic-powered Proton OnSite electrolyzer.

The station commenced operations in August 2011, was formally opened with considerable fanfare on April 10, but was shut down after a pressure relief valve malfunctioned on May 4, resulting in a small fire from a safety vent stack.

There were no injuries. Remediation has included installation of new valves and a four-foot extension of the venting stacks, and additional training of both AC Transit and local fire department personnel, says Jaimie Levin, director of environmental technology and fuel cell program manager at the agency.

“Based on the information currently available, it appears that all safety devices operated as designed,” Linde said on the day of the venting incident.

Linde liquid hydrogen tank at AC Transit’s bus and public access fueling facility in Emeryville, Calif.

“There were no injuries and no property damage.”

“The station’s emergency systems worked as they were supposed to,” AC said. “All equipment and fuel supplies were completely isolated, and all storage vessels were well within acceptable and safe pressure and temperature limits.”


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Source: AC Transit with Fleets & Fuels follow-up

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