CGA Public Comment Period Now Open: CGA H-5, Standard for Bulk Hydrogen Supply Systems (Revision of ANSI/CGA H-5-2014)

June 25, 2020

Per CGA ANSI Procedures, this announcement is being made to provide notification of the availability of CGA H-5, Standard for Bulk Hydrogen Supply Systems (an American National Standard) for public review and comment.

This standard contains minimum requirements for locating/siting, selecting equipment, installing, starting up, maintaining, and removing bulk hydrogen supply systems.

Two types of bulk hydrogen supply systems are covered in this standard: liquid and gaseous.

A bulk gas hydrogen supply system is one that contains more than 5000 scf (141.6 m3) of hydrogen. A bulk liquid supply system is one that contains more than 39.7 gal (150 L) of hydrogen. Requirements of this standard are limited to systems operating up to 15 000 psi (103.4 MPa).

This standard applies to hydrogen supply systems containing any of the following equipment. Not all hydrogen systems include all the equipment listed. Hydrogen supply systems include cryogenic hydrogen storage tanks, either aboveground or belowground; gas storage vessels, either aboveground or belowground;  heat exchangers (including vaporizers); valves including manual and automatic shutoff valves, and check valves; pressure control equipment including regulators and control valves; piping (pipe and tubing); cryogenic pumps; cryogenic and warm gas compressors; snubbers and pulsation dampeners; and monitoring and control systems including electrical and instrumentation.  The bulk hydrogen supply system terminates at the source valve or where the gaseous or liquid hydrogen supply first enters the supply line.

For more information on how to obtain a copy of CGA H-5 or submit comments about the publication, contact Thomas Deary, CGA Committee Project Manager, at 703-788-2716. Or, send Tom an email by completing the form below and clicking “Submit.” All required fields are marked with an asterisk (*).

COMMENTS DUE: August 11, 2020

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