Steam Specifications and Requirements

General Requirements

We have general requirements for all steam applications, including distributed generation plants with heat recovery steam generators. It is essential that specific information relative to each installation be obtained directly from our Steam Distribution Engineering Department.

We also have general requirements for customers using our steam service or planning to interconnect Combined Heat and Power facilities to our Steam Distribution System.

General Requirements for Steam Service (S-11965) Including CHP Interconnect

Steam Service Rules Handbook

Steam Service Terms

We have a set of steam service terms that should be reviewed before applying for steam service to ensure you have a complete understanding of the extent of our service and your responsibilities.

Steam Service Terms

Specific Engineering Specifications

The following documents describe specific requirements for customer installation of a high pressure steam meter station and associated equipment.

Customer’s Installation of Steam Trap for 200 psig Service (EO-9352- B)

Customer’s Installation of Dresser Coupling Sleeve for Steam Service Sizes 1” to 12” EO-9380-C

Installation of Customer Inside Service Valve for 200 psi Service (EO-10296- B)

Typical Assembly and Installation of Vortex Flow Meter (S- 588)

Meter Piping with Straightening Vanes for Vortex Flow Meter (S-591)

Meter Pan for Two Vortex Steam Meter Flow Computers (S- 593)

Mounting Panel for Vortex Meter Relay for Control of Motor-Operated Ball Valve (S- 599)

Meter Pan for One Vortex Steam Meter Flow Computer (S- 622)

Typical Piping Installation of Single Vortex Steam Meter (1” to 4”) (S- 589)

Typical Piping Installation of Two Vortex Steam Meters (1” to 4”) for Segregated Loads (S-590)

Typical Wiring Diagram for Two Segregated Vortex Steam Meters (S-619)

Typical Piping Installation of a Two Meter (1” to 4”) Sequential Station with One Motorized Ball Valve – Vortex Meter (S-595)

Typical Wiring Diagram for Two Vortex Steam Meters with One Motorized Ball Valve(S-631)

Typical Piping Installation of a Three Meter (1” to 4”) Sequential Station with Two Motorized Ball Valves – Vortex Meter (S-596)

Typical Wiring Diagram for Three Vortex Steam Meters with Two Motorized Ball Valves (S-624)

Wiring Diagram for KEP #1 (exploded view) (S-624 for KEP#1)

Wiring Diagram for KEP #2 (exploded view) (S-624 for KEP#2)

Typical Piping Installation of a Three Meter (4” to 12”) Sequential Station with Two Motorized Angle Globe Valves – Vortex Meter (S-625)

Typical Wiring Diagram for Three Vortex Steam Meter (4” to 12”) with Two Motorized Angle Globe Valves and Pressure Transmitter (S-635)

Typical Meter Pan Layout for Three Steam Flow Computers with Two Motorized AngleGlobe Valves (S-634)

Gasket Material For Use on the Steam Distribution System (S-9051)

Thermal Insulation Requirements for Steam Meter Stations (S-9021)