• 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

1311.14.6 Use of Automatic Firechecks, Safety Blowouts, or Backfire Preventers

Los Angeles Mechanical Code > 13 Fuel Gas Piping > 1311.0 Gas Piping Installation > 1311.14 Systems Containing Flammable Gas-Air Mixtures > 1311.14.6 Use of Automatic Firechecks, Safety Blowouts, or Backfire Preventers
JUMP TO FULL CODE CHAPTER
Automatic firechecks and safety blowouts or backfire preventers shall be provided in piping systems distributing flammable air-gas mixtures from gas-mixing machines to protect the piping and the machines in the event of flashback, in accordance with the following:
  1. Approved automatic firechecks shall be installed upstream as close as practicable to the burner inlets in accordance with the firecheck manufacturer's installation instructions.
  2. A separate manually operated gas valve shall be provided at each automatic firecheck for shutting off the flow of gas-air mixture through the firecheck after a flashback has occurred. The valve shall be located upstream as close as practical to the inlet of the automatic firecheck.

    Caution:

    These valves shall not be reopened after a flashback has occurred until the firecheck has cooled to prevent reignition of the flammable mixture and has been reset properly.
  3. A safety blowout or backfiring preventer shall be provided in the mixture line near the outlet of each gas-mixing machine where the size of the piping is more than 21/2 inches (65 mm) NPS, or equivalent, to protect the mixing equipment in the event of an explosion passing through an automatic firecheck. The manufacturer's installation instructions shall be followed where installing these devices, particularly after a disc has burst. The discharge from the safety blowout or backfire preventer shall be located or shielded so that particles from the ruptured disc cannot be directed toward personnel. Wherever there are interconnected installations of gas-mixing machines with safety blowouts or backfire preventers, provision shall be made to keep the mixture from other machines from reaching a ruptured disc opening. Check valves shall not be used for this purpose.
  4. Large-capacity premix systems provided with explosion heads (rupture discs) to relieve excessive pressure in pipelines shall be located at and vented to a safe outdoor location. Provisions shall be provided for automatically shutting off the supply of gas-air mixture in the event of rupture. [NFPA 54:7.12.6]

Related Code Sections


1210.12.6 Fuel Gas Piping, Use of Automatic Firechecks, Safety Blowouts, or Backfire Preventers
Automatic firechecks and safety blowouts or backfire preventers shall be provided in piping systems distributing flammable air-gas mixtures from gas ...
Los Angeles Plumbing Code > 12 Fuel Gas Piping > 1210.0 Gas Piping Installation > 1210.12 Systems Containing Flammable Gas-Air Mixtures > 1210.12.6 Use of Automatic Firechecks, Safety Blowouts, or Backfire Preventers
1310.14.6 Fuel Gas Piping, Use of Automatic Firechecks, Safety Blowouts, or Backfire Preventers
Automatic firechecks and safety blowouts or backfire preventers shall be provided in piping systems distributing flammable air-gas mixtures from gas ...
Los Angeles Mechanical Code > 13 Fuel Gas Piping > 1310.0 Gas Piping Installation > 1310.14 Systems Containing Flammable Gas-Air Mixtures > 1310.14.6 Use of Automatic Firechecks, Safety Blowouts, or Backfire Preventers
1311.14.6 Fuel Gas Piping, Use of Automatic Firechecks, Safety Blowouts, or Backfire Preventers
Automatic firechecks and safety blowouts or backfire preventers shall be provided in piping systems distributing flammable air-gas mixtures from gas ...
Los Angeles Mechanical Code > 13 Fuel Gas Piping > 1311.0 Gas Piping Installation > 1311.14 Systems Containing Flammable Gas-Air Mixtures > 1311.14.6 Use of Automatic Firechecks, Safety Blowouts, or Backfire Preventers
1311.14.1 Fuel Gas Piping, Required Components
40 NPS. Automatic firecheck(s). Safety blowout(s) or backfire preventers for systems utilizing flammable mixture lines above 2 1 / 2 inches (65 mm ...
Los Angeles Mechanical Code > 13 Fuel Gas Piping > 1311.0 Gas Piping Installation > 1311.14 Systems Containing Flammable Gas-Air Mixtures > 1311.14.1 Required Components
5706.3.4 Flammable and Combustible Liquids, Prevention of Blowouts
Protection shall be provided to control and prevent the blowout of a well. Protection equipment shall meet federal, state and other applicable ...
2017 LA City Fire Code > 57 Flammable and Combustible Liquids > 5706 Special Operations > 5706.3 Well Drilling and Operating > 5706.3.4 Prevention of Blowouts
Help Contact Us Privacy Terms
Code Calculators
Code Calculators
Code calculators automatically generate a detailed list of requirements.
Code sheet exports
Code sheet exports
Generate a code sheet that integrates with your drawing set.
Shared projects
Shared projects
Projects provide a dedicated space to collaborate on code research.
Code diagrams
Code diagrams
Unpack the code through illustrations and descriptions.
Code Compare
Code Compare
Highlight differences between any two building codes.
Search
Search
Don't miss relevant code. Quickly locate sections across your jurisdiction.
View thousands of relevant UL Certified products and assemblies that help achieve code compliance
View thousands of relevant UL Certified products and assemblies that help achieve code compliance
Access to UL product and system certification information.
UpCodes Premium
Leverage the most sophisticated code compliance platform.
TRY FREE FOR TWO WEEKS VISIT PRICING
Join the waitlist
We are looking to gauge the level of interest in linking UL product and system certification information alongside related code sections.

Let us know your email and we’ll ping you once it’s ready! Learn more.

Thank you for your interest!

If you’re open to it, we would love to jump on the phone to make sure we’re building this in the best way possible for your workflow. Any insight or advice would be greatly appreciated. We’ve sent you an email with a calendar link to book at time with us.


Cancel
Get Early Access
UpCodes Premium
Leverage the full code compliance platform.
START 2 WEEK FREE TRIAL LEARN MORE