NERC | Sudden Pressure Relays and Other Devices that Respond to Non‐Electrical Quantities | December 2013 1 of 34 Sudden Pressure Relays and Other Devices that Respond to Non-Electrical Quantities SPCS Input for Standard Development in Response to FERC Order No. 758 System Protection and Control Subcommittee December 2013 3353 Peachtree Road NE Suite 600, North Tower Atlanta, GA 30326 404-446-2560 | www.nerc.com