• Codes
  • Features

    Features Overview

    Go to features
    Reference

    Reference.

    A reliable and up-to-date source of codes.
    Research

    Research.

    Rapidly and efficiently calculate project parameters.
    Collaboration

    Collaboration.

    Get everyone on the same page and streamline code research.
    Workflows
    Architects General Contractor Building Official & Plans Examiner Inspectors Owner Subcontractors Code Consultants
  • Pricing
  • Login
  • Sign Up
Sign Up
Login
  • Code Library
  • Features
  • Pricing
  • About
  • Careers
  • Help
  • Contact
  • Terms
  • Privacy
Sign Up
Upgrade to Premium
Code calculators: Code Calculators automatically generates a detailed list of requirements.
REFERENCE
Amendment Styling
Industry-leading search
Suggested code sections
Code diagrams
RESEARCH
Code calculators
Filter by topic
Code compare
Code sheet exports
COLLABORATION
Team projects
Bookmarks
Comments
START 2 WEEK FREE TRIAL
Have an account? Sign in
// CODE SNIPPET

413.9 Discharge of CNG From Motor Vehicle Fuel Storage Containers

Fuel Gas Code 2015 of Utah > 4 Gas Piping Installations > 413 (IFGC) Compressed Natural Gas Motor Vehicle Fuel-Dispensing Facilities > 413.9 Discharge of CNG From Motor Vehicle Fuel Storage Containers
JUMP TO FULL CODE CHAPTER
The discharge of CNG from motor vehicle fuel cylinders for the purposes of maintenance, cylinder certification, calibration of dispensers or other activities shall be in accordance with this section. The discharge of CNG from motor vehicle fuel cylinders shall be accomplished through a closed transfer system or an approved method of atmospheric venting in accordance with Section 413.9.1 or 413.9.2.

413.9.1 Closed Transfer System

A documented procedure that explains the logical sequence for discharging the cylinder shall be provided to the code official for review and approval. The procedure shall include what actions the operator will take in the event of a low-pressure or high-pressure natural gas release during the discharging activity. A drawing illustrating the arrangement of piping, regulators and equipment settings shall be provided to the code official for review and approval. The drawing shall illustrate the piping and regulator arrangement and shall be shown in spatial relation to the location of the compressor, storage vessels and emergency shutdown devices.

413.9.2 Atmospheric Venting

Atmospheric venting of motor vehicle fuel cylinders shall be in accordance with Sections 413.9.2.1 through 413.9.2.6.

413.9.2.1 Plans and Specifications

A drawing illustrating the location of the vessel support, piping, the method of grounding and bonding, and other requirements specified herein shall be provided to the code official for review and approval.

413.9.2.2 Cylinder Stability

A method of rigidly supporting the vessel during the venting of CNG shall be provided. The selected method shall provide not less than two points of support and shall prevent horizontal and lateral movement of the vessel. The system shall be designed to prevent movement of the vessel based on the highest gas-release velocity through valve orifices at the vessel's rated pressure and volume. The structure or appurtenance shall be constructed of noncombustible materials.

413.9.2.3 Separation

The structure or appurtenance used for stabilizing the cylinder shall be separated from the site equipment, features and exposures and shall be located in accordance with Table 413.9.2.3.


[F] TABLE 413.9.2.3 SEPARATION DISTANCE FOR ATMOSPHERIC VENTING OF CNG
EQUIPMENT OR FEATURE MINIMUM
SEPARATION (feet)
Buildings 25
Building openings 25
Lot lines 15
Public ways 15
Vehicles 25
CNG compressor and storage vessels 25
CNG dispensers 25

For SI: 1 foot = 304.8 mm.

413.9.2.4 Grounding and Bonding

The structure or appurtenance used for supporting the cylinder shall be grounded in accordance with NFPA 70. The cylinder valve shall be bonded prior to the commencement of venting operations.

413.9.2.5 Vent Tube

A vent tube that will divert the gas flow to the atmosphere shall be installed on the cylinder prior to the commencement of the venting and purging operation. The vent tube shall be constructed of pipe or tubing materials approved for use with CNG in accordance with the International Fire Code.

The vent tube shall be capable of dispersing the gas not less than 10 feet (3048 mm) above grade level. The vent tube shall not be provided with a rain cap or other feature that would limit or obstruct the gas flow.

At the connection fitting of the vent tube and the CNG cylinder, a listed bidirectional detonation flame arrester shall be provided.

413.9.2.6 Signage

Approved NO SMOKING signs shall be posted within 10 feet (3048 mm) of the cylinder support structure or appurtenance. Approved CYLINDER SHALL BE BONDED signs shall be posted on the cylinder support structure or appurtenance.

Related Code Sections


2308.8 Motor Fuel-Dispensing Facilities and Repair Garages, Discharge of CNG From Motor Vehicle Fuel Storage Containers
The discharge of CNG from motor vehicle fuel cylinders for the purposes of maintenance, cylinder certification, calibration of dispensers or other ...
Fire Code 2018 of Utah > 23 Motor Fuel-Dispensing Facilities and Repair Garages > 2308 Compressed Natural Gas Motor Fuel-Dispensing Facilities > 2308.8 Discharge of CNG From Motor Vehicle Fuel Storage Containers
413.9 Gas Piping Installations, Discharge of CNG From Motor Vehicle Fuel Storage Containers
The discharge of CNG from motor vehicle fuel cylinders for the purposes of maintenance, cylinder certification, calibration of dispensers or other ...
Fuel Gas Code 2018 of Utah > 4 Gas Piping Installations > 413 (IFGC) Compressed Natural Gas Motor Vehicle Fuel-Dispensing Facilities > 413.9 Discharge of CNG From Motor Vehicle Fuel Storage Containers
413.9 Gas Piping Installations, Discharge of CNG From Motor Vehicle Fuel Storage Containers
The discharge of CNG from motor vehicle fuel cylinders for the purposes of maintenance, cylinder certification, calibration of dispensers or other ...
Fuel Gas Code 2015 of Utah > 4 Gas Piping Installations > 413 (IFGC) Compressed Natural Gas Motor Vehicle Fuel-Dispensing Facilities > 413.9 Discharge of CNG From Motor Vehicle Fuel Storage Containers
413.9.2.3 Gas Piping Installations, Separation
MINIMUM SEPARATION (feet) Buildings 25 Building openings 25 Lot lines 15 Public ways 15 Vehicles 25 CNG compressor and storage ...
Fuel Gas Code 2018 of Utah > 4 Gas Piping Installations > 413 (IFGC) Compressed Natural Gas Motor Vehicle Fuel-Dispensing Facilities > 413.9 Discharge of CNG From Motor Vehicle Fuel Storage Containers > 413.9.2 Atmospheric Venting > 413.9.2.3 Separation
413.9.2.3 Gas Piping Installations, Separation
CNG compressor and storage vessels 25 CNG dispensers 25 For SI: 1 foot = 304.8 mm ...
Fuel Gas Code 2015 of Utah > 4 Gas Piping Installations > 413 (IFGC) Compressed Natural Gas Motor Vehicle Fuel-Dispensing Facilities > 413.9 Discharge of CNG From Motor Vehicle Fuel Storage Containers > 413.9.2 Atmospheric Venting > 413.9.2.3 Separation
Help Contact Us Privacy Terms
Shared projects
Shared projects
Projects provide a dedicated space to collaborate on code research.
Code Calculators
Code Calculators
Code calculators automatically generate a detailed list of requirements.
Code diagrams
Code diagrams
Unpack the code through illustrations and descriptions.
Code sheet exports
Code sheet exports
Generate a code sheet that integrates with your drawing set.
Code Compare
Code Compare
Highlight differences between any two building codes.
Search
Search
Don't miss relevant code. Quickly locate sections across your jurisdiction.
UpCodes Premium
Leverage the most sophisticated code compliance platform.
TRY FREE FOR TWO WEEKS VISIT PRICING
UpCodes Premium
Leverage the full code compliance platform.
START 2 WEEK FREE TRIAL LEARN MORE