SECTION: 23 11 25 10 FACILITY GAS PIPING

 

Criteria

  1. Quality Assurance: EP 415-1-261, Volume 1 & EP 415-1-261, Volume 4   
  2. UFGS SECTION 23 11 25 FACILITY GAS PIPING

 

Changes or Criteria Notes to Unified Facilities Guide Specifications (UFGS)

Paragraph # and Title (if any)

Note to Designer

Change Text

 

Design Requirements

Design must follow Gas Utility (Puget Sound Energy) requirements. Following are their standards:

  1. PSE CUSTOMER REQUIREMENTS, ABOVE 2 PSI PRESSURE GAS DELIVERY - CUSTOMER-PROVIDED EQUIPMENT REQUIREMENTS (after the meter):

Line pressure regulator

    • Inlet rated to at least 60 psig 
    • Location shall be readily accessible 
    • Must be vented to the outdoors

Overpressure protection device or system (If not part of the line pressure regulator)

    • Designed to guard against the failure of the line pressure regulator 
    • Types of overpressure protection
      • two-stage regulation 
      • relief device* 
      • overpressure shut-off (OPSO)* 
      • or combination of the above

*Relief and OPSO valves may either be an integral part of the line pressure regulator, or separate devices

Line shut-off valve

    • Rated to at least 60 psig 
    • Installed immediately upstream of each line pressure regulator

Appliance regulator and shut-off valve

    • Located at each gas appliance

Piping

    • Installed per Uniform Mechanical Code (as amended by state and local authorities)
    • Pressure tested to 60 psig, signed off by building official
  1. GAS ACCOUNT TURN-ON PROCEDURES:  Customer must give PSE 2 working days notice prior to turn-on.
    • Contact your PSE Project manager to arrange to activate the meter. 
    • All fuel line piping and tie-in to meter set is to be completed by customer's contractor. 
    • A piping permit must be signed and posted stating that the pipe was pressure tested to 60 psig. 
    • PSE will perform a leak test on all piping. The gas will be turned on, brought up to operating pressure, shut back off and left for a minimum of 15 minutes. If the piping does not hold pressure, the meter set will be left off until the leak on the fuel line is corrected. 
    • Customer must have a representative available for initial turn-on of customer equipment. The equipment/appliance with the highest BTU rating, or multiple appliances, must be started and run at time of the turn-on to allow PSE personnel to adjust PSE regulator. (Any electrical connections necessary to operate equipment must be completed.)
  2. PSE CUSTOMER REQUIREMENTS, 2 PSI PRESSURE GAS DELIVERY:

CUSTOMER-PROVIDED EQUIPMENT REQUIREMENTS (after the meter)

Line pressure regulator installed on fuel line:

    • Inlet rated to at least 60 psig 
    • Location shall be readily accessible 
    • Must be vented to the outdoors or be equipped with limiting orifice restricting release of gas to not more than 5 cubic feet per hour, if the regulator is installed in well-ventilated location, and is acceptable to the building official. Maxitrol, O.A.R.A., or any other regulator that meets ANSI Z21.80 standard is acceptable. Please have specification sheet available for review by building official and PSE personnel.
    • Overpressure protection device is not required for 2.0 psig or lower installation. However, if in the future you request to have your delivery pressure increased above 2.0 psig, you will need to install an overpressure protection device or system before the pressure increase can be carried out.

Line shut-off valve:

    • Rated to at least 60 psig 
    • Installed immediately upstream of each line pressure regulator

Piping:

    • Installed per Uniform Mechanical Code (as amended by state and local authorities)
    • Pressure tested to 60 psig, signed off by building official

 

  1. GAS ACCOUNT TURN-ON PROCEDURES -

Customer must give PSE 2 working days notice prior to turn-on.

    • Contact your PSE Project Manager to arrange to activate the meter.
      • Alternative for small-capacity meters: If you have a single-meter installation with a meter of either 250 or 425 cubic feet per hour capacity (look for those numbers on the front of the meter), you may call Puget Sound Energy ' s Call Center (888-225-5773) and request a service call to activate the meter. Be sure to clearly specify you are requesting 2 psi gas service.
    • All fuel line piping and tie-in to meter set is to be completed by customer ' s contractor. 
    • PSE will perform a leak test on all piping. If the piping does not hold pressure, the meter set will be left off until the leak on the fuel line is corrected. 
    • A piping permit must be signed and posted stating appropriate pressure test was completed. 
    • Customer may need a representative available for initial turn-on of customer equipment. The appliance with the highest BTU rating, or multiple appliances, must be started and run at time of the turn-on to allow PSE personnel to adjust PSE service regulator. (Any electrical connections necessary to operate equipment must be completed.)
  1. PUGET SOUND ENERGY GAS METER LOCATION

(Place sticker on wall in approved meter location)

Meter must be placed a minimum distance as indicated from the following building features:

 

Horizontal

 

 Under

 

 Above

 Doors (including garage)

 4 feet

 

Not permitted

 

 1 foot

 Windows (openable)

 4 feet

 

 10 feet

 

 1 foot

 Electric meter or outlets

 3 feet

 

 Not permitted

 

 3 feet

 Appliance combustion air int.

 3 feet*

 

 3 feet*

 

 3 feet*

 Return Air Intake

 10 feet

 

 10 feet

 

 3 feet

 Appliance Vents

 3 feet

 

 3 feet  

 

 3 feet  

 Air Conditioner/Heat Pump

 6 feet

 

 Not permitted

 

 Not permitted

 Incinerator or open flame

 6 feet

 

 Not permitted

 

 Not permitted

 Generator

 6 feet

 

 Not permitted

 

 Not permitted

 Transformer

 3 feet

 

 Not permitted

 

 Not permitted

*3 feet minimum or greater if specified by appliance manufacturer

 

 

Notes to Designers on Drawing Content

 

 

Standard Details

 

 

Applicable Points of Contact

Design Standards