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BLUEBOOKSPECIFICATIONS AND REQUIREMENTS FOR GASINSTALLATIONSNEW YORK CITY ANDLONG ISLANDDECEMBER 2020
IMPORTANT NOTICEREGARDINGNATIONAL GRID SPECIFICATIONS AND REQUIREMENTSFOR GAS INSTALLATIONSThese Specifications and Requirements have been designed with great careso that, when followed consistently, they will ensure that a new installationwill comply with New York State law, various codes and other safetyrequirements. Failure to comply may result in a code or safety violationand/or a job not being approved. Therefore, delays could result while thecontractor corrects the changes at his/her expense.The specifications, construction standards and other requirements containedin this book represent National Grid’s commitment to the contractingcommunity for quality and consistency of service. Any variation from thetype of hardware used, connection point of service, service entrance orother details on a construction standard must be approved in advance byNational Grid in writing.We at National Grid are always available to discuss your design concernsand to provide assistance to you. We encourage any questions regardingyour problems on specific projects, please be sure to contact us for our inputduring the planning stages to avoid possible additional costs later in the job.Paul Gugliotta – Materials & Standards/Gas EngineeringPeter Polumbo – Policy & ProceduresRobert Zabielski - Gas Customer Meter ServicePaul Brillantes - Gas Customer Meter ServicesSteven Massaro - Gas Customer Meter ServicesRichard Verderame - Gas Customer Meter ServicesEvan Schierwagen - Gas Customer Meter ServicesJoseph Scibelli – Customer Gas ConnectionsDaniel Lundon - Gas Customer Meter ServicesDavid Malone - Gas Customer Meter ServicesLouis Quaranta - Gas Customer Meter ServicesJeffery Vinciguerra - Gas Customer Meter Services
Revision 11, December 2020Table of Contents Page 1 of 4TABLE OF CONTENTS1.0 INTRODUCTION 11.11.21.31.41.5PURPOSE . 1SCOPE/REFERENCES . 1EXCLUSIONS; RETROACTIVITY. 2ALTERNATE MATERIALS, EQUIPMENT AND PROCEDURES. 2RESPONSIBILITY. 22.0 DEFINITION OF TERMS. 2-83.0 3.143.153.163.173.183.193.20. 9AREA/GEOGRAPHICAL CONSIDERATIONS . 9COMMUNICATION/COOPERATION. 9MEANING OF "SHALL" IN THIS BOOK . 9STATE AND LOCAL CODES . 10RESPONSIBILITY FOR CODE APPLICABILITY. 10INSPECTIONS, CERTIFICATES, PERMITS. 10ACCESS TO CUSTOMERS' PREMISES . 10IDENTIFICATION OF EMPLOYEES . 10UNAUTHORIZED CONNECTIONS . 10SEALS AND TAMPERING DEVICES. 11DISCONNECTION OF SERVICE. 11REACTIVATING GAS SERVICE FOLLOWING A WARNINGTAG VIOLATION . 11NATIONAL GRID EQUIPMENT ON PRIVATE PROPERTY . 11DEMOLITION . 11INTERCONNECTIONS. 11BACK-PRESSURE AND SUCTION PROTECTION . 12PROTECTION WHEN COMPRESSED AIR OROXYGEN CAN ENTER GAS PIPING. 12ADEQUACY AND SAFETY . 12CODE COMPLIANCE . 12REVISIONS OF THIS BOOK . 124.0 NEW GAS SERVICE INSTALLATION PROCESS . 134.1GENERAL . 134.2REQUIREMENTS FOR HAVING A NEW RESIDENTIAL AND SMALLCOMMERCIAL GAS SERVICE INSTALLED . 204.3RUD AND CIPUD SERVICE . 215.0 GAS SERVICE LINE(S) . 255.1GAS SERVICE LINE(S) TO A BUILDING OR OTHER GAS USAGE. 255.2LOCATION OF GAS SERVICE LINE(S)/LATERAL(S) . 25
Revision 11, December 20205.35.45.55.6Table of Contents Page 2 of 4SERVICE ENTRANCE . 26CONNECTION POINT OF SERVICE, BROOKLYN UNION/CUSTOMERCONNECTION POINT OF GAS SERVICE . 26RESTORATION ON PRIVATE PROPERTY . 26ADDITIONAL METERS OR SERVICES. 266.0GAS PRESSURE . 266.1NOMINAL METER OUTLET PRESSURE WHEN SERVED FROMBROOKLYN UNION'S HIGH PRESSURE DISTRIBUTION SYSTEM. 276.2METER OUTLET PRESSURE WHEN SERVED FROMNATIONAL GRID’S LOW PRESSURE DISTRIBUTION SYSTEM . 276.3PRESSURE AND CONTRACTOR'S PIPING . .276.4ELEVATED METER OUTLET PRESSURE ON HIGHPRESSURE DISTRIBUTION SYSTEM . 276.5ELEVATED METER OUTLET PRESSURE ON LOWPRESSURE DISTRIBUTION SYSTEM . 296.6LOCAL CODES RELATING TO ELEVATED GAS PRESSURES . 297.0METERS AND REGULATORS . 297.1PREREQUISITES AND NOTIFICATIONS FOR NEW GAS METERS . 297.2.METER SET LOCATION REQUIREMENTS. 307.3INSTALLATION AND INTERCONNECTION REQUIREMENTS. 327.4INDOOR METER SET REQUIREMENTS. 327.5INDOOR METER SET REQUIREMENTS FORLARGE INSTALLATIONS . 327.6MULTIPLE METER HEADER REQUIREMENTS . 337.7METER SET PROTECTION REQUIREMENTS . 347.8METER HEADER PAD REQUIREMENTS FOR LARGEGAS INSTALLATIONS . 347.9WALLS TO SUPPORT METER HEADER REQUIREMENTS . 347.10RELOCATION OF GAS METER SETS . 357.11GAS SERVICE REGULATOR AND VENTING REQUIREMENTS . 357.12 METER BYPASS REQUIREMENTS . .367.13 TELEMETERING INSTALLATION REQUIREMENTS . 367.14METER INSTALLATION, PURGING AND RELIGHTING . 367.15PILOT GAS SUPPLY FOR INTERRUPTIBLE RATE CUSTOMERS . 378.0CUSTOMER-OWNED GAS PIPING SYSTEMS. 378.1GENERAL . 378.2PIPE SIZING . 388.3PIPING DRAWING . 398.4GAS PIPING MATERIALS . 398.4.1 GENERAL . 398.4.2 GAS PIPING MATERIALS, INDOORS . 398.4.3 GAS PIPING MATERIALS, OUTDOORS, ABOVE GROUND . 408.4.4 GAS PIPING MATERIALS, BELOW GROUND, GENERAL . 408.4.5 GAS PIPING BELOW GROUND, STEEL PIPE OPTION . 418.4.6 GAS PIPING BELOW GROUND, PLASTIC PIPE OPTION . 418.4.7 GAS "PIPING" BELOW GROUND, COPPER TUBING OPTION. 428.5VALVES . 428.6STEEL GAS PIPING, WELDING REQUIREMENTS . 43
Revision 11, December 2020Page 3 of 4 Table of 59.0GENERAL. . .43RESIDENTIAL, COMMERCIAL, INDUSTRIAL, MULTI-FAMILYINSTALLATIONS IN NASSAU AND SUFFOLK COUNTIES . 438.6.3 ALL PUBLIC AND PRIVATE SCHOOL BUILDINGS,INCLUDING COLLEGES . .448.6.4 TESTING REQUIREMENTS OF PIPING AFTER THE METER . 448.6.5 STANDARDS FOR NON MERCURY GAUGE . .448.6.6 WELDER QUALIFICATIONS 45GAS PIPING (INDOORS AND OUTDOORS) ABOVEGROUND, INSTALLATION REQUIREMENTS, GENERAL . 46GAS PIPING OUTDOORS, BELOW GROUND, INSTALLATIONREQUIREMENTS. 47STEEL GAS PIPING , CORROSION PROTECTIONREQUIREMENTS, COATING AND WRAPPING . 49STEEL GAS PIPING, CORROSION PROTECTIONREQUIREMENTS, INSULATING JOINTS . 49STEEL GAS PIPING, CORROSION PROTECTIONREQUIREMENTS, MAGNESIUM ANODES . 49PLASTIC PIPING, INSTALLATION REQUIREMENTS . .50COPPER TUBING INSTALLATION REQUIREMENTS . 51GAS PIPING THROUGH BUILDING WALLS, ABOVE ORBELOW GROUND, INSTALLATION REQUIREMENTS. 52PRESSURE TESTING OF GAS PIPING . 52GAS UTILIZATION EQUIPMENT . 529.1GENERAL . 529.1.1 APPLIANCES, ACCESSORIES AND EQUIPMENT APPROVAL . 529.1.2 INSTALLING CONTRACTOR'S RESPONSIBILITIES . 529.1.3 CO ALARMS . 539.1.4 ASSEMBLY OF EQUIPMENT . 529.1.5 GAS UTILIZATION EQUIPMENT INSTALLED IN RESIDENTIALGARAGES . .539.2NATIONAL GRID “NATURAL GAS PRESSURE, IGNITION & DRAFT TEST” . 539.3GENERAL REQUIREMENTS, SPACE AND WATER HEATING EQUIPMENTINSTALLATIONS . 539.4COMBUSTION, DILUTION AND VENTILATION AIR(FRESH AIR) REQUIREMENTS . 539.5VENTING OF CATEGORY I GAS UTILIZATIONEQUIPMENT ONLY . 549.6VENTING OF GAS UTILIZATION EQUIPMENT CATEGORIIES II, III AND IV . 549.7CHIMNEYS. 549.8SPILL SWITCH REQUIREMENTS . 559.9INSTALLATION OF HEAT PRODUCING EQUIPMENT IN FLAMMABLEOR CORROSIVE ATMOSPHERES 55
Revision 11, December 20209.109.119.129.139.149.159.169.17Table of Contents Page 4 of 4GAS CONVERSIONS AND CONVERSIONBURNER REQUIREMENTS .
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. The intent of the book is to
