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2009 National Fuel Gas Code Workshop November 19-20, 2008

2009 National Fuel Gas Code Workshop November 19-20, 2008. Revision Summary. Scope:. Does Not Apply To …. REVISED. Clarify that the code does not apply fuel gas piping in ALL electric power plants. Previous editions stated power and atomic energy plants. REVISED. Piping Materials:.

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2009 National Fuel Gas Code Workshop November 19-20, 2008

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  1. 2009 National Fuel Gas Code Workshop November 19-20, 2008 Revision Summary

  2. Scope: Does Not Apply To … REVISED Clarify that the code does not apply fuel gas piping in ALL electric power plants Previous editions stated power and atomic energy plants

  3. REVISED Piping Materials: Copper Joints Recognizes ANSI LC 4, Press-connect copper fittings

  4. NEW Piping Materials: Excess Flow Valves EFV where installed… Shall be listed for the application Sized and installed in accordance with manufacturer’s instructions

  5. NEW Piping Materials: • EFV Definition Excess Flow Valves • Designed to activate

  6. Piping Materials: NEW Table A.5.6 Lists all materials, standards, fittings, joints and other requirements contained in Chapter 5.

  7. REVISED Piping Installation: • Eliminated 3 ft distance from source of ignition Meter Locations • Add 3 ft regulator vent termination requirement

  8. REVISED Piping Sizing: New EHD 39 Size Gas Piping Tables Also added to natural gas tables 6.2(p), 6.2(q) & LP tables 6.3(h), 6.3(i), 6.3j

  9. REVISED Piping Installation: Pipe revised to sleeve Through Foundations Allows approved device or method

  10. REVISED Piping Installation: Plastic/Metal Transition Adds ASTM F2509 to allowed transitions

  11. REVISED Piping Installation: Piping Support Piping support must be made of metal and allows the use of building components.

  12. NEW Piping Installation: Requires “master” shutoff valve Lab Shutoff Valves Must be accessible, located within the lab or near egress door and identified

  13. REVISED Gas piping other than CSST that is likely to be energized must be bonded. Piping Installation: Gas Piping Bonding Appliance grounding conductor can serve as the bond All CSST must be bonded … To the electrical service Where the gas service enters Minimum 6 AWG wire

  14. NEW Piping Installation: Lightning System Bond Where lightning protection system is installed … … in accordance with NFPA 780

  15. REVISED Requires makeup air be provided Appliance Installation: Exhaust Air Systems Previously - consideration for adequacy of combustion air

  16. REVISED Appliance Installation: Commercial Cooking Appliances Connections Configure connector per instructions Restraining device required for appliances with casters

  17. REVISED Appliance Installation: Radiant Tube Heaters Connector listed to Z21.24 Connections Listed for the application Connector installed per TUBE HEATER One connector only

  18. Convenience Outlets REVISED Appliance Installation: Now must be listed to Z21.90 Connections

  19. REVISED Appliance Installation: Now required to be installed downstream of shutoff valve Sediment Traps

  20. DIFFERENCE Appliance Installation: Where low-water cutoff is required Boilers No change in Z223.1 NFPA 54 Requires all boilers to have low water cutoff On the NFGC November meeting agenda for coordination

  21. REVISED Appliance Installation: Must be listed to Z21.11.2 Unvented Heaters

  22. REVISED Appliance Installation: No rigid connections Gas Engines

  23. NEW Applies to Permanently fixed-in-place Appliance Installation: Listed appliances installed per instructions. Outdoor Decorative Unlisted appliances installed per instructions and... Clearance minimum is 36 in. Piping connections – rigid pipe, tubing or listed connector.

  24. REVISED Venting: Interlocking to Exhaust System Clarification that commercial cooking appliances need not be interlocked

  25. NEW Venting: Installed per instructions Plastic Vent Joints Primer must be contrasting color

  26. NEW Venting: Gas Vent Fasteners Fasteners shall not penetrate inner wall of double wall vents Except … connecting to single wall vent connector, draft hood or flue collar

  27. NEW Venting: Prohibits use in residential occupancies Single Wall Metal Vents Does not apply to single-wall vent connectors

  28. REVISED Venting: Requirements for single wall vent penetration through combustible exterior wall Single Wall Metal Vents Relocated from vent connector requirements in 12.11.14.2 (2006) Revised to apply to single wall metal vents

  29. NEW Venting: Seal all wall penetration annular spaces Vent Termination Sealing Applies to vents, direct-vent & combustion air intakes

  30. NEW Venting: Two ways to connect multiple vent connectors to a common vent Connections to Common Vent At different levels Same level but at maximum 45 degree angle

  31. REVISED Venting: All single-wall vent connector maximum length is 75% Vent Connector Length Previously allowed a maximum 100% length for multi-appliance installations

  32. Single tables – maximum for ALL offset as limited by the table REVISED Venting: Venting Tables – Maximum Offset Multiple tables – maximum for ALL offset is 18 in./18 in.

  33. Also applies to Table 13.1(d) REVISED Venting: Single Appliance Venting Tables “Sizes” replaced with 7 times statement

  34. “Grade level” changed to “finished ground level” REVISED General: Finished grade level Some examples to be aware of….

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