BLUEBOOK - National Grid

1 BLUEBOOK SPECIFICATIONS AND REQUIREMENTS FOR GAS INSTALLATIONS NEW YORK CITY AND LONG ISLAND APRIL 2021 Revision 12, April 2021 Table of Contents P age 1 of 4 TABLE OF CONTENTS INTRODUCTION 1 PURPOSE .. 1 SCOPE/REFERENCES .. 1 EXCLUSIONS; RETROACTIVITY .. 2 ALTERNATE MATERIALS, EQUIPMENT AND PROCEDURES .. 2 RESPONSIBILITY .. 2 DEFINITION OF 2-8 GENERAL .. 9 AREA/GEOGRAPHICAL CONSIDERATIONS .. 9 COMMUNICATION/COOPERATION .. 9 MEANING OF "SHALL" IN THIS BOOK .. 9 STATE AND LOCAL CODES .. 10 RESPONSIBILITY FOR CODE APPLICABILITY .. 10 INSPECTIONS, CERTIFICATES, PERMITS .. 10 ACCESS TO CUSTOMERS' PREMISES.

2 10 IDENTIFICATION OF EMPLOYEES .. 10 UNAUTHORIZED CONNECTIONS .. 10 SEALS AND TAMPERING DEVICES .. 11 DISCONNECTION OF SERVICE .. 11 REACTIVATING GAS SERVICE FOLLOWING A WARNING TAG VIOLATION .. 11 National grid EQUIPMENT ON PRIVATE PROPERTY .. 11 DEMOLITION .. 11 INTERCONNECTIONS .. 11 BACK-PRESSURE AND SUCTION PROTECTION .. 12 PROTECTION WHEN COMPRESSED AIR OR OXYGEN CAN ENTER GAS PIPING .. 12 ADEQUACY AND SAFETY .. 12 CODE COMPLIANCE .. 12 REVISIONS OF THIS BOOK .. 12 NEW GAS SERVICE INSTALLATION PROCESS .. 13 GENERAL .. 13 REQUIREMENTS FOR HAVING A NEW RESIDENTIAL AND SMALL COMMERCIAL GAS SERVICE INSTALLED .. 20 RUD AND CIPUD SERVICE .. 21 GAS SERVICE LINE(S).

3 25 GAS SERVICE LINE(S) TO A BUILDING OR OTHER GAS USAGE .. 25 LOCATION OF GAS SERVICE LINE(S)/LATERAL(S) .. 25 Revision 12, April 2021 Table of Contents Page 2 of 4 SERVICE .. 26 CONNECTION POINT OF SERVICE, BROOKLYN UNION/CUSTOMER CONNECTION POINT OF GAS SERVICE .. 26 RESTORATION ON PRIVATE PROPERTY .. 26 ADDITIONAL METERS OR SERVICES .. 26 GAS PRESSURE .. 26 NOMINAL METER OUTLET PRESSURE WHEN SERVED FROM BROOKLYN UNION'S HIGH PRESSURE DISTRIBUTION SYSTEM .. 27 METER OUTLET PRESSURE WHEN SERVED FROM National grid S LOW PRESSURE DISTRIBUTION SYSTEM .. 27 PRESSURE AND CONTRACTOR'S PIPING ..27 ELEVATED METER OUTLET PRESSURE ON HIGH PRESSURE DISTRIBUTION SYSTEM.

4 27 ELEVATED METER OUTLET PRESSURE ON LOW PRESSURE DISTRIBUTION SYSTEM .. 29 LOCAL CODES RELATING TO ELEVATED GAS PRESSURES .. 29 METERS AND regulators .. 29 PREREQUISITES AND NOTIFICATIONS FOR NEW GAS METERS .. 29 METER SET LOCATION REQUIREMENTS .. 29 INSTALLATION AND INTERCONNECTION REQUIREMENTS .. 31 INDOOR METER SET REQUIREMENTS .. 33 INDOOR METER SET REQUIREMENTS FOR LARGE INSTALLATIONS .. 33 MULTIPLE METER HEADER REQUIREMENTS .. 34 METER SET PROTECTION REQUIREMENTS .. 34 METER HEADER PAD REQUIREMENTS FOR LARGE GAS INSTALLATIONS .. 35 WALLS TO SUPPORT METER HEADER REQUIREMENTS .. 35 RELOCATION OF GAS METER SETS .. 35 GAS SERVICE REGULATOR AND VENTING REQUIREMENTS.

5 36 METER BYPASS TELEMETERING INSTALLATION REQUIREMENTS .. 37 METER INSTALLATION, PURGING AND 38 PILOT GAS SUPPLY FOR INTERRUPTIBLE RATE 38 CUSTOMER-OWNED GAS PIPING SYSTEMS .. 38 GENERAL .. 38 PIPE SIZING .. 39 PIPING DRAWING .. 40 GAS PIPING MATERIALS .. 40 GENERAL .. 40 GAS PIPING MATERIALS, INDOORS .. 40 GAS PIPING MATERIALS, OUTDOORS, ABOVE GROUND .. 40 GAS PIPING MATERIALS, BELOW GROUND, GENERAL .. 40 GAS PIPING BELOW GROUND, STEEL PIPE OPTION .. 41 GAS PIPING BELOW GROUND, PLASTIC PIPE OPTION .. 42 GAS "PIPING" BELOW GROUND, COPPER TUBING OPTION .. 43 .. 43 STEEL GAS PIPING, WELDING REQUIREMENTS .. 43 Revision 12, April 2021 Page 3 of 4 Table of Contents RESIDENTIAL, COMMERCIAL, INDUSTRIAL, MULTI-FAMILY INSTALLATIONS IN NASSAU AND SUFFOLK COUNTIES.

6 43 ALL PUBLIC AND PRIVATE SCHOOL BUILDINGS, INCLUDING COLLEGES ..45 TESTING REQUIREMENTS OF PIPING AFTER THE STANDARDS FOR NON MERCURY WELDER GAS PIPING (INDOORS AND OUTDOORS) ABOVE GROUND, INSTALLATION REQUIREMENTS, GENERAL .. 46 GAS PIPING OUTDOORS, BELOW GROUND, INSTALLATION REQUIREMENTS .. 47 STEEL GAS PIPING , CORROSION PROTECTION REQUIREMENTS, COATING AND WRAPPING .. 50 STEEL GAS PIPING, CORROSION PROTECTION REQUIREMENTS, INSULATING JOINTS .. 50 STEEL GAS PIPING, CORROSION PROTECTION REQUIREMENTS, MAGNESIUM ANODES .. 50 PLASTIC PIPING, INSTALLATION REQUIREMENTS ..51 COPPER TUBING INSTALLATION REQUIREMENTS .. 52 GAS PIPING THROUGH BUILDING WALLS, ABOVE OR BELOW GROUND, INSTALLATION REQUIREMENTS.

7 52 PRESSURE TESTING OF GAS PIPING .. 53 GAS UTILIZATION EQUIPMENT .. 53 GENERAL .. 53 APPLIANCES, ACCESSORIES AND EQUIPMENT APPROVAL .. 53 INSTALLING CONTRACTOR'S RESPONSIBILITIES .. 53 CO ALARMS .. 54 ASSEMBLY OF EQUIPMENT .. 54 GAS UTILIZATION EQUIPMENT INSTALLED IN RESIDENTIAL National grid NATURAL GAS PRESSURE, IGNITION & DRAFT TEST .. 54 GENERAL REQUIREMENTS, SPACE AND WATER HEATING EQUIPMENT INSTALLATIONS .. 54 COMBUSTION, DILUTION AND VENTILATION AIR (FRESH AIR) REQUIREMENTS .. 54 VENTING OF CATEGORY I GAS UTILIZATION EQUIPMENT ONLY .. 54 VENTING OF GAS UTILIZATION EQUIPMENT - CATEGORIIES II, III AND IV.

8 55 CHIMNEYS .. 55 SPILL SWITCH REQUIREMENTS .. 56 INSTALLATION OF HEAT PRODUCING EQUIPMENT IN FLAMMABLE OR CORROSIVE ATMOSPHERES ..56 Revision 12, April 2021 Table of Contents Page 4 of 4 GAS CONVERSIONS AND CONVERSION BURNER REQUIREMENTS .. 57 GAS FIREPLACES (VENTED DECORATIVE GAS APPLIANCES) .. 58 ILLIMINATING DEVICES .. 58 NATURAL GAS COMBUSTION ENGINES .. 59 COMPRESSED NATURAL GAS (CNG) STATIONS .. 59 UNVENTED ROOM HEATERS .. 59 OTHER EQUIPMEMNT .. 59 COMBO WATER 59 APPENDICES APPENDIX A SERVICE REGULATOR VENT PIPING REQUIREMENTS APPENDIX B CHOOSING A FURNACE OR BOILER APPENDIX C National grid S NEW METER SET HOTLINE APPENDIX D GAS PIPING SYSTEM PRESSURE TESTING REQUIREMENTS AND INSTRUCTIONS APPENDIX E CUSTOMER OWNER GAS PIPING INSPECTION CERTIFICATE APPENDIX F CORRIGATED ATAINLESS STEEL TUBING APPENDIX G NEW YORK STATE CO ALARM LAW RULE APPENDIX H PROPERTIES OF NATURAL GAS APPENDIX I METER SIZES AND DIMENSIONS APPENDIX J FREQUENTLY USED STANDARDS APPENDIX K LINKS TO MANUFACTURERS

9 APPENDIX L ODOR FADE Blue Book PART II Temperature Controlled Specifications Revision 12, April 2021 Page 1 of 59 33 1 INTRODUCTION PURPOSE This book presents specifications and requirements relating to the connection and use of natural gas supplied from the National grid Gas System. It contains the minimum acceptable standards for gas piping and gas appliance installation necessary to ensure the safe and satisfactory utilization of natural gas by our customers. The information contained herein is intended primarily to assist the installer in the new gas installation process, but it is also intended for use by our customers, by architects and engineers, and finally, by people in various departments at National grid .

10 It shall be used when a customer's gas installation is new, when a customer is increasing gas usage from a smaller capacity, or when any changes are made from the original installation. It represents a collection of information which will provide for a safe, properly conceived, accurately sized and cost effective installation that will give long lasting, satisfactory service to our customers. The operation of the head of service valve or meter valve is restricted to National grid s Operator Qualified personnel. National grid s jurisdictional ends at the outlet of the National grid meter. SCOPE/REFERENCES The contents of this book apply to installations connecting gas supply system to a customer's premises. We have made it as comprehensive as is practical, within the limits of the intended overview of the subject matter it addresses.