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AGA: American Gas Association

AGA, the American Gas Association, is a nonprofit organization that develops and publishes standards for the natural gas industry. Headquartered in Washington, D.C., United States, AGA standards are used by 200 local energy companies, collectively providing natural gas to 91% of the United States market, serving approximately a fifth of all energy needs in the United States.

Below are AGA's best-selling standards. To find additional standards, please use the search bar above.

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AGA X01084

LNG Preventive Maintenance Guide



For LNG plant owners/operators, to develop and implement an effective preventive maintenance program for their facilities. It will help them determine the types and frequency of tests and inspections to be included. 120 pages. 1984.


AGA XQ0011S

ANSI Standards Set - 2000

Including AGA XQ0008 ANSI B109.1 - 2000 for Diaphram-Type Gas Displacement Meters (Under 500 Cubic Feet Per Hour Capacity); AGA XQ0009 ANSI B109.2 - 2000 for Diaphram-Type Gas Displacement Meters (500 Cubic Feet Per Hour Capacity and Over); AGA XQ0010 ANSI B109.3 - 2000 for Rotary-Type Gas Displacement Meters; AGA XQ9802 ANSI B109.4 - 1998 for Self-Operated Diaphragm Type Natural Gas Service Regulators.


AGA XL1001

Classifications of Locations for Electrical Installations in Gas Utility Areas

The gas utility areas to which this publication applies are those in which flammable gases are produced, manufactured, stored, transmitted and distributed. (Includes erratas 1 and 2).


AGA XQ0684

Gas Measurement Manuals - Part 4: Gas Turbine Metering (Revised)



Provides information on the theory of operation, performance characteristics, installation and maintenance of turbine meters; describes the technique for flow computation; discusses density and rangeability; and provides a section on calibration testing.


AGA XQ9011

Gas Measurement Manuals - Part 3: Orifice Meters



Encompasses the theory of operation, design and installation of primary and secondary elements in accordance with AGA Report No. 3/ANSI/API 2530. Also includes information on calibration and testing equipment and common causes of measurement error.


AGA XQ9802

ANSI B109.4 - 1998 for Self-Operated Diaphragm Type Natural Gas Service Regulators



A basic standard for the safe and reliable operation, and the substantial and durable construction of self-operated diaphragm type natural gas service regulators, for nominal pipe size of 1-1/4 inches and smaller with outlet pressure of 14 inch water column or less.


AGA XZ0277

Gas Measurement Manuals - Part 2: Displacement Metering (Revised)



Contains information relating to current industry practices and available equipment, as well as acceptable procedures for installing, testing, operating and maintaining large-capacity diaphragm and rotary displacement meters.


AGA XH0105

Fundamentals of Gas Combustion - Combined Manual & Workbook



Fundamentals manual has been combined with the workbook. Includes: History; Properties and General characteristics of Gases; Combustion of gas; flammability limits; Testing for CO; Design and operation of burners; burner orifices; venting and burner problems. Workbook questions are given after each chapter and answers are in the back of the book. A useful reference for vocational-technical schools, appliance service and repairman and utility employees. Sponsored by the Customer Service & Utilization Committee. Soft bound 131 pages.


AGA XQ0483

Gas Measurement Manuals - Part 5: Other Measurement Methods (Revised)



Provides measurement procedures for inferential meters (does not cover positive-displacement meters). Section 5.1 covers LNG custody-transfer procedures.



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As the voice of the U.S. standards and conformity assessment system, the American National Standards Institute (ANSI) empowers its members and constituents to strengthen the U.S. marketplace position in the global economy while helping to assure the safety and health of consumers and the protection of the environment.

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