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North Carolina Fuel Gas Code, 3rd Printing, 2012

This software contains information which is proprietary to and copyrighted by or licensed to International Code Council, Inc. Read more... The portions of information copyrighted by or licensed to the International Code Council, Inc., have been obtained and reproduced with permission. The acronym ICC®, the ICC logo, 2012 North Carolina Fuel Gas Code, 3rd Printing are federally protected trademarks and service marks of ICC. All other code titles are the trademarks and services marks of the International Code Council, Inc. ALL RIGHTS RESERVED. Without advance written permission from the International Code Council, Inc., no part of the International Code Council, Inc.'s copyrighted or licensed material may be reproduced, distributed or transmitted in any form of by any means, including, without limitation, electronic, optical or mechanical means (by way of example and not limitation, photocopying, printing, or recording by or in an information storage retrieval system). For information on permission to copy the International Code Council, Inc. materials, please contact: Publications, 4051 West Flossmoor Road, Country Club Hills, IL 60478. Phone 1-888-ICC-SAFE (422-7233). Show less...

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North Carolina Fuel Gas Code, 3rd Printing, 2012

2012 NORTH CAROLINA STATE BUILDING CODE: FUEL GAS CODE (2009 IFGC® WITH NORTH CAROLINA AMENDMENTS)
COPYRIGHT
NORTH CAROLINA STATE BUILDING CODE COUNCIL MARCH 14, 2017
NORTH CAROLINA DEPARTMENT OF INSURANCE
COMMITTEES OF THE COUNCIL
PREFACE
EFFECTIVE USE OF THE INTERNATIONAL FUEL GAS CODE
ORDINANCE
TABLE OF CONTENTS
CHAPTER 1 SCOPE AND ADMINISTRATION [Go to Page]
PART 1—SCOPE AND APPLICATION [Go to Page]
SECTION 101 (IFGC) GENERAL
SECTION 102 (IFGC) APPLICABILITY
SECTION 103 (IFGC) DEPARTMENT OF INSPECTION
SECTION 104 (IFGC) DUTIES AND POWERS OF THE CODE OFFICIAL
SECTION 105 (IFGC) APPROVAL
SECTION 106 (IFGC) PERMITS
SECTION 107 (IFGC) INSPECTIONS AND TESTING
SECTION 108 (IFGC) VIOLATIONS
SECTION 109 (IFGC) MEANS OF APPEAL
SECTION 110 (IFGC) TEMPORARY EQUIPMENT, SYSTEMS AND USES
CHAPTER 2 DEFINITIONS [Go to Page]
SECTION 201 (IFGC) GENERAL
SECTION 202 (IFGC) GENERAL DEFINITIONS
CHAPTER 3 GENERAL REGULATIONS [Go to Page]
SECTION 301 (IFGC) GENERAL
SECTION 302 (IFGC) STRUCTURAL SAFETY
SECTION 303 (IFGC) APPLIANCE LOCATION
SECTION 304 (IFGS) COMBUSTION, VENTILATION AND DILUTION AIR [Go to Page]
EQUATION 3-1
EQUATION 3-2
FIGURE 304.5.3 ALL AIR FROM INSIDE THE BUILDING (see Section 304.5.3)
FIGURE 304.6.1(1) ALL AIR FROM OUTDOORS—INLET AIR FROM VENTILATED CRAWL SPACE AND OUTLET AIR TO VENTILATED ATTIC (see Section 304.6.1)
FIGURE 304.6.1(2) ALL AIR FROM OUTDOORS THROUGH VENTILATED ATTIC (see Section 304.6.1)
FIGURE 304.6.1(3) ALL AIR FROM OUTDOORS (see Section 304.6.1)
FIGURE 304.6.2 SINGLE COMBUSTION AIR OPENING, ALL AIR FROM THE OUTDOORS (see Section 304.6.2)
SECTION 305 (IFGC) INSTALLATION
SECTION 306 (IFGC) ACCESS AND SERVICE SPACE
SECTION 307 (IFGC) CONDENSATE DISPOSAL
SECTION 308 (IFGS) CLEARANCE REDUCTION FOR UNLISTED EQUIPMENT [Go to Page]
TABLE 308.2a through k REDUCTION OF CLEARANCES WITH SPECIFIED FORMS OF PROTECTION
FIGURE 308.2(1) EXTENT OF PROTECTION NECESSARY TO REDUCE CLEARANCES FROM APPLIANCE OR VENT CONNECTIONS
FIGURE 308.2(2) WALL PROTECTOR CLEARANCE REDUCTION SYSTEM
FIGURE 308.2(3) MASONRY CLEARANCE REDUCTION SYSTEM
SECTION 309 (IFGC) ELECTRICAL
SECTION 310 (IFGS) ELECTRICAL BONDING
SECTION 311 CARBON MONOXIDE ALARMS
CHAPTER 4 GAS PIPING INSTALLATIONS [Go to Page]
SECTION 401 (IFGC) GENERAL
SECTION 402 (IFGS) PIPE SIZING [Go to Page]
EQUATION 4-1
EQUATION 4-2
TABLE 402.2 APPROXIMATE GAS INPUT FOR TYPICAL APPLIANCES
TABLE 402.4 Cr AND Y VALUES FOR NATURAL GAS AND UNDILUTED PROPANE AT STANDARD CONDITIONS
TABLE 402.4(1) SCHEDULE 40 METALLIC PIPE DELETED
TABLE 402.4(2) SCHEDULE 40 METALLIC PIPE
TABLE 402.4(3) SCHEDULE 40 METALLIC PIPE
TABLE 402.4(4) SCHEDULE 40 METALLIC PIPE DELETED
TABLE 402.4(5) SCHEDULE 40 METALLIC PIPE
TABLE 402.4(6) SEMIRIGID COPPER TUBING DELETED
TABLE 402.4(7) SEMIRIGID COPPER TUBING
TABLE 402.4(8) SEMIRIGID COPPER TUBING
TABLE 402.4(9) SEMIRIGID COPPER TUBING DELETED
TABLE 402.4(10) SEMIRIGID COPPER TUBING
TABLE 402.4(11) SEMIRIGID COPPER TUBING DELETED
TABLE 402.4(12) SEMIRIGID COPPER TUBING
TABLE 402.4(13) CORRUGATED STAINLESS STEEL TUBING (CSST)
TABLE 402.4(14) CORRUGATED STAINLESS STEEL TUBING (CSST) DELETED
TABLE 402.4(15) CORRUGATED STAINLESS STEEL TUBING (CSST) DELETED
TABLE 402.4(16) CORRUGATED STAINLESS STEEL TUBING (CSST)
TABLE 402.4(17) CORRUGATED STAINLESS STEEL TUBING (CSST)
TABLE 402.4(18) POLYETHYLENE PLASTIC PIPE DELETED
TABLE 402.4(19) POLYETHYLENE PLASTIC PIPE
TABLE 402.4(20) POLYETHYLENE PLASTIC PIPE
TABLE 402.4(21) POLYETHYLENE PLASTIC TUBING DELETED
TABLE 402.4(22) POLYETHYLENE PLASTIC TUBING
TABLE 402.4(23) SCHEDULE 40 METALLIC PIPE
TABLE 402.4(24) SCHEDULE 40 METALLIC PIPE
TABLE 402.4(25) SCHEDULE 40 METALLIC PIPE
TABLE 402.4(26) SCHEDULE 40 METALLIC PIPE
TABLE 402.4(27) SEMIRIGID COPPER TUBING
TABLE 402.4(28) SEMIRIGID COPPER TUBING
TABLE 402.4(29) SEMIRIGID COPPER TUBING
TABLE 402.4(30) CORRUGATED STAINLESS STEEL TUBING (CSST)
TABLE 402.4(31) CORRUGATED STAINLESS STEEL TUBING (CSST)
TABLE 402.4(32) CORRUGATED STAINLESS STEEL TUBING (CSST)
TABLE 402.4(33) POLYETHYLENE PLASTIC PIPE
TABLE 402.4(34) POLYETHYLENE PLASTIC PIPE
TABLE 402.4(35) POLYETHYLENE PLASTIC TUBING
TABLE 402.4(36) POLYETHYLENE PLASTIC PIPE SIZING BETWEEN FIRST STAGE AND SECOND STAGE REGULATOR
TABLE 402.4(37) POLYETHYLENE PLASTIC TUBE SIZING
SECTION 403 (IFGS) PIPING MATERIALS [Go to Page]
TABLE 403.9.2 SPECIFICATIONS FOR THREADING METALLIC PIPE
SECTION 404 (IFGC) PIPING SYSTEM INSTALLATION
SECTION 405 (IFGS) PIPING BENDS AND CHANGES IN DIRECTION
SECTION 406 (IFGS) INSPECTION, TESTING AND PURGING [Go to Page]
TABLE 406.7.1 SIZE AND LENGTH OF PIPING REQUIRING PURGING WITH INERT GAS FOR SERVICING OR MODIFICATION
TABLE 406.7.2 SIZE AND LENGTH OF PIPING REQUIRING PURGING WITH INERT GAS BEFORE PLACING IN OPERATION
SECTION 407 (IFGC) PIPING SUPPORT
SECTION 408 (IFGC) DRIPS AND SLOPED PIPING
SECTION 409 (IFGC) SHUTOFF VALVES [Go to Page]
TABLE 409.1.1 MANUAL GAS VALVE STANDARDS
SECTION 410 (IFGC) FLOW CONTROLS
SECTION 411 (IFGC) APPLIANCE AND MANUFACTURED HOME CONNECTIONS
SECTION 412 (IFGC) LIQUEFIED PETROLEUM GAS MOTOR VEHICLE FUEL-DISPENSING FACILITIES
SECTION 413 (IFGC) COMPRESSED NATURAL GAS MOTOR VEHICLE FUEL-DISPENSING FACILITIES [Go to Page]
[F] TABLE 413.9.2.3 SEPARATION DISTANCE FOR ATMOSPHERIC VENTING OF CNG
SECTION 414 (IFGC) SUPPLEMENTAL AND STANDBY GAS SUPPLY
SECTION 415 (IFGS) PIPING SUPPORT INTERVALS [Go to Page]
TABLE 415.1 SUPPORT OF PIPING
SECTION 416 (IFGS) OVERPRESSURE PROTECTION DEVICES
CHAPTER 5 CHIMNEYS AND VENTS [Go to Page]
SECTION 501 (IFGC) GENERAL
SECTION 502 (IFGC) VENTS
SECTION 503 (IFGS) VENTING OF APPLIANCES [Go to Page]
TABLE 503.4 TYPE OF VENTING SYSTEM TO BE USED
FIGURE 503.5.4 TYPICAL TERMINATION LOCATIONS FOR CHIMNEYS AND SINGLE-WALL METAL PIPES SERVING RESIDENTIAL-TYPE AND LOW-HEAT APPLIANCES
FIGURE 503.6.4 TERMINATION LOCATIONS FOR GAS VENTS WITH LISTED CAPS 12 INCHES OR LESS IN SIZE AT LEAST 8 FEET FROM A VERTICAL WALL
FIGURE 503.6.10.1 PLAN VIEW OF PRACTICAL SEPARATION METHOD FOR MULTISTORY GAS VENTING
TABLE 503.10.2.4 MINIMUM THICKNESS FOR GALVANIZED STEEL VENT CONNECTORS FOR LOW-HEAT APPLIANCES
TABLE 503.10.2.5 MINIMUM THICKNESS FOR STEEL VENT CONNECTORS FOR MEDIUM-HEAT APPLIANCES AND COMMERCIAL AND INDUSTRIAL INCINERATORS VENT CONNECTOR SIZE
TABLE 503.10.5a CLEARANCES FOR CONNECTORS
SECTION 504 (IFGS) SIZING OF CATEGORY I APPLIANCE VENTING SYSTEMS [Go to Page]
TABLE 504.2(1) TYPE B DOUBLE-WALL GAS VENT [Go to Page]
TABLE 504.2(1)—continued TYPE B DOUBLE-WALL GAS VENT
TABLE 504.2(1)—continued TYPE B DOUBLE-WALL GAS VENT
TABLE 504.2(1)—continued TYPE B DOUBLE-WALL GAS VENT
TABLE 504.2(2) TYPE B DOUBLE-WALL GAS VENT [Go to Page]
TABLE 504.2(2)—continued TYPE B DOUBLE-WALL GAS VENT
TABLE 504.2(3) MASONRY CHIMNEY [Go to Page]
TABLE 504.2(3)—continued MASONRY CHIMNEY
TABLE 504.2(4) MASONRY CHIMNEY [Go to Page]
TABLE 504.2(4)—continued MASONRY CHIMNEY
TABLE 504.2(5) SINGLE-WALL METAL PIPE OR TYPE B ASBESTOS CEMENT VENT
TABLE 504.2(6) EXTERIOR MASONRY CHIMNEY
TABLE 504.3.2 MAXIMUM VENT CONNECTOR LENGTH
TABLE 504.3(1) TYPE B DOUBLE-WALL VENT [Go to Page]
TABLE 504.3(1)—continued TYPE B DOUBLE-WALL VENT
TABLE 504.3(2) TYPE B DOUBLE-WALL VENT
TABLE 504.3(3) MASONRY CHIMNEY
TABLE 504.3(4) MASONRY CHIMNEY
TABLE 504.3(5) SINGLE-WALL METAL PIPE OR TYPE ASBESTOS CEMENT VENT
TABLE 504.3(6a) EXTERIOR MASONRY CHIMNEY
TABLE 504.3(6b) EXTERIOR MASONRY CHIMNEY [Go to Page]
TABLE 504.3(6b) EXTERIOR MASONRY CHIMNEY—continued
TABLE 504.3(7a) EXTERIOR MASONRY CHIMNEY
TABLE 504.3(7b) EXTERIOR MASONRY CHIMNEY [Go to Page]
TABLE 504.3(7b) EXTERIOR MASONRY CHIMNEY—continued
SECTION 505 (IFGC) DIRECT-VENT, INTEGRAL VENT, MECHANICAL VENT AND VENTILATION/EXHAUST HOOD VENTING
SECTION 506 (IFGC) FACTORY-BUILT CHIMNEYS
CHAPTER 6 SPECIFIC APPLIANCES [Go to Page]
SECTION 601 (IFGC) GENERAL
SECTION 602 (IFGC) DECORATIVE APPLIANCES FOR INSTALLATION IN FIREPLACES
SECTION 603 (IFGC) LOG LIGHTERS
SECTION 604 (IFGC) VENTED GAS FIREPLACES (DECORATIVE APPLIANCES)
SECTION 605 (IFGC) VENTED GAS FIREPLACE HEATERS
SECTION 606 (IFGC) INCINERATORS AND CREMATORIES
SECTION 607 (IFGC) COMMERCIAL-INDUSTRIAL INCINERATORS
SECTION 608 (IFGC) VENTED WALL FURNACES
SECTION 609 (IFGC) FLOOR FURNACES
SECTION 610 (IFGC) DUCT FURNACES
SECTION 611 (IFGC) NONRECIRCULATING DIRECT-FIRED INDUSTRIAL AIR HEATERS
SECTION 612 (IFGC) RECIRCULATING DIRECT-FIRED INDUSTRIAL AIR HEATERS
SECTION 613 (IFGC) CLOTHES DRYERS
SECTION 614 (IFGC) CLOTHES DRYER EXHAUST [Go to Page]
[M] TABLE 614.6.5.1 DRYER EXHAUST DUCT FITTING EQUIVALENT LENGTH
SECTION 615 (IFGC) SAUNA HEATERS
SECTION 616 (IFGC) ENGINE AND GAS TURBINE POWERED EQUIPMENT
SECTION 617 (IFGC) POOL AND SPA HEATERS
SECTION 618 (IFGC) FORCED-AIR WARM-AIR FURNACES
SECTION 619 (IFGC) CONVERSION BURNERS
SECTION 620 (IFGC) UNIT HEATERS
SECTION 621 (IFGC) UNVENTED ROOM HEATERS
SECTION 622 (IFGC) VENTED ROOM HEATERS
SECTION 623 (IFGC) COOKING APPLIANCES
SECTION 624 (IFGC) WATER HEATERS
SECTION 625 (IFGC) REFRIGERATORS
SECTION 626 (IFGC) GAS-FIRED TOILETS
SECTION 627 (IFGC) AIR-CONDITIONING APPLIANCES
SECTION 628 (IFGC) ILLUMINATING APPLIANCES
SECTION 629 (IFGC) SMALL CERAMIC KILNS
SECTION 630 (IFGC) INFRARED RADIANT HEATERS
SECTION 631 (IFGC) BOILERS
SECTION 632 (IFGC) EQUIPMENT INSTALLED IN EXISTING UNLISTED BOILERS
SECTION 633 (IFGC) STATIONARY FUEL-CELL POWER SYSTEMS
SECTION 634 (IFGS) CHIMNEY DAMPER OPENING AREA
SECTION 635 (IFGC) GASEOUS HYDROGEN SYSTEMS
CHAPTER 7 GASEOUS HYDROGEN SYSTEMS [Go to Page]
SECTION 701 (IFGC) GENERAL
SECTION 702 (IFGC) GENERAL DEFINITIONS
SECTION 703 (IFGC) GENERAL REQUIREMENTS
SECTION 704 (IFGC) PIPING, USE AND HANDLING
SECTION 705 (IFGC) TESTING OF HYDROGEN PIPING SYSTEMS
SECTION 706 (IFGC) LOCATION OF GASEOUS HYDROGEN SYSTEMS
SECTION 707 (IFGC) OPERATION AND MAINTENANCE OF GASEOUS HYDROGEN SYSTEMS
SECTION 708 (IFGC) DESIGN OF LIQUEFIED HYDROGEN SYSTEMS ASSOCIATED WITH HYDROGEN VAPORIZATION OPERATIONS
IFGC/IFGS CHAPTER 8 REFERENCED STANDARDS [Go to Page]
ANSI
ASME
ASTM
CGA
CSA
DOTn
ICC
MSS
NFPA
UL
APPENDIX A (IFGS) SIZING AND CAPACITIES OF GAS PIPING [Go to Page]
A.1 GENERAL PIPING CONSIDERATIONS
A.2 DESCRIPTION OF TABLES [Go to Page]
TABLE A.2.2 EQUIVALENT LENGTHS OF PIPE FITTINGS AND VALVES [Go to Page]
TABLE A.2.2—continued EQUIVALENT LENGTHS OF PIPE FITTINGS AND VALVES
TABLE A.2.4 MULTIPLIERS TO BE USED WITH TABLES 402.4(1) THROUGH 402.4(22) WHERE THE SPECIFIC GRAVITY OF THE GAS IS OTHER THAN 0.60
A.3 USE OF CAPACITY TABLES [Go to Page]
TABLE A.3.4 THOUSANDS OF BTU/H (MBH) OF NATURAL GAS PER 100 FEET OF PIPE AT VARIOUS PRESSURE DROPS AND PIPE DIAMETERS
A.4 USE OF SIZING EQUATIONS
A.5 PIPE AND TUBE DIAMETERS [Go to Page]
TABLE A.5.1 SCHEDULE 40 STEEL PIPE STANDARD SIZES
TABLE A.5.2 COPPER TUBE STANDARD SIZES
A.6 USE OF SIZING CHARTS [Go to Page]
FIGURE A.6 (a) CAPACITY OF NATURAL GAS PIPING, LOW PRESSURE (0.60 WC)
FIGURE A.6 (b) CAPACITY OF NATURAL GAS PIPING, HIGH PRESSURE (1.5 psi and above)
A.7 EXAMPLES OF PIPING SYSTEM DESIGN AND SIZING [Go to Page]
FIGURE A.7.1 PIPING PLAN SHOWING A STEEL PIPING SYSTEM
FIGURE A.7.2PIPING PLAN SHOWING A CSST SYSTEM
FIGURE A.7.2 PIPING PLAN SHOWING A CSST SYSTEM
FIGURE A.7.3 PIPING PLAN SHOWING A COPPER TUBING SYSTEM
FIGURE A.7.4 PIPING PLAN SHOWING A MODIFICATION TO EXISTING PIPING SYSTEM
APPENDIX B (IFGS) SIZING OF VENTING SYSTEMS SERVING APPLIANCES EQUIPPED WITH DRAFT HOODS, CATEGORY I APPLIANCES, AND APPLIANCES LISTED FOR USE WITH TYPE B VENTS [Go to Page]
EXAMPLES USING SINGLE APPLIANCE VENTING TABLES [Go to Page]
FIGURE B-1 TYPE B DOUBLE-WALL VENT SYSTEM SERVING A SINGLE APPLIANCE WITH A TYPE B DOUBLE-WALL VENT
FIGURE B-2 TYPE B DOUBLE-WALL VENT SYSTEM SERVING A SINGLE APPLIANCE WITH A SINGLE-WALL METAL VENT CONNECTOR
FIGURE B-3 VENT SYSTEM SERVING A SINGLE APPLIANCE WITH A MASONRY CHIMNEY OF TYPE B DOUBLE-WALL VENT CONNECTOR
FIGURE B-4 VENT SYSTEM SERVING A SINGLE APPLIANCE USING A MASONRY CHIMNEY AND A SINGLE-WALL METAL VENT CONNECTOR
FIGURE B-5 ASBESTOS CEMENT TYPE B OR SINGLE-WALL METAL VENT SYSTEM SERVING A SINGLE DRAFT-HOOD-EQUIPPED APPLIANCE
FIGURE B-6 VENT SYSTEM SERVING TWO OR MORE APPLIANCES WITH TYPE B DOUBLE-WALL VENT AND TYPE B DOUBLE-WALL VENT CONNECTOR
FIGURE B-7 VENT SYSTEM SERVING TWO OR MORE APPLIANCES WITH TYPE B DOUBLE-WALL VENT AND SINGLE-WALL METAL VENT CONNECTORS
FIGURE B-8 MASONRY CHIMNEY SERVING TWO OR MORE APPLIANCES WITH TYPE B DOUBLE-WALL VENT CONNECTOR
FIGURE B-9 MASONRY CHIMNEY SERVING TWO OR MORE APPLIANCES WITH SINGLE-WALL METAL VENT CONNECTORS
FIGURE B-10 ASBESTOS CEMENT TYPE B OR SINGLE-WALL METAL VENT SYSTEM SERVING TWO OR MORE DRAFT-HOOD-EQUIPPED APPLIANCES
FIGURE B-11 USE OF MANIFOLD COMMON VENT CONNECTOR
FIGURE B-12 USE OF OFFSET COMMON VENT
FIGURE B-13 MULTISTORY GAS VENT DESIGN PROCEDURE FOR EACH SEGMENT OF SYSTEM
FIGURE B-14 MULTISTORY VENT SYSTEMS
FIGURE B-15 (EXAMPLE 1) SINGLE DRAFT-HOOD-EQUIPPED APPLIANCE
FIGURE B-16 (EXAMPLE 2) SINGLE FAN-ASSISTED APPLIANCE
EXAMPLES USING COMMON VENTING TABLES [Go to Page]
FIGURE B-17 (EXAMPLE 4) COMMON VENTING TWO DRAFT HOOD-EQUIPPED APPLIANCES
FIGURE B-18 (EXAMPLE 5A) COMMON VENTING A DRAFT HOOD WITH A FAN-ASSISTED FURNACE INTO A TYPE B DOUBLE-WALL COMMON VENT
TABLE B-1 MASONRY CHIMNEY LINER DIMENSIONS WITH CIRCULAR EQUIVALENTSa
FIGURE B-19
APPENDIX C (IFGS) EXIT TERMINALS OF MECHANICAL DRAFT AND DIRECT-VENT VENTING SYSTEMS [Go to Page]
APPENDIX C EXIT TERMINALS OF MECHANICAL DRAFT AND DIRECT-VENT VENTING SYSTEMS
APPENDIX D (IFGS) RECOMMENDED PROCEDURE FOR SAFETY INSPECTION OF AN EXISTING APPLIANCE INSTALLATION
INDEX [Go to Page]

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