[Code of Federal Regulations]
[Title 18, Volume 1]
[Revised as of April 1, 2004]
From the U.S. Government Printing Office via GPO Access
[CITE: 18CFR284.4]

[Page 735]
 
           TITLE 18--CONSERVATION OF POWER AND WATER RESOURCES
 
  CHAPTER I--FEDERAL ENERGY REGULATORY COMMISSION, DEPARTMENT OF ENERGY
 
PART 284_CERTAIN SALES AND TRANSPORTATION OF NATURAL GAS UNDER THE 
NATURAL GAS POLICY ACT OF 1978 AND RELATED AUTHORITIES--Table of Contents
 
               Subpart A_General Provisions and Conditions
 
Sec. 284.4  Reporting.

    (a) Reports in MMBtu. All reports filed pursuant to this part must 
indicate quantities of natural gas in MMBtu's. An MMBtu means a million 
British thermal units. A British thermal unit or Btu means the quantity 
of heat required to raise the temperature of one pound avoirdupois of 
pure water from 58.5 degrees to 59.5 degrees Fahrenheit, determined in 
accordance with paragraphs (b) and (c) of this section.
    (b) Measurement. The Btu content of one cubic foot of natural gas 
under the standard conditions specified in paragraph (c) of this section 
is the number of Btu's produced by the complete combustion of such cubic 
foot of gas, at constant pressure with air of the same temperature and 
pressure as the gas, when the products of combustion are cooled to the 
initial temperature of the gas and air and when the water formed by such 
combustion is condensed to a liquid state.
    (c) Standard conditions. The standard conditions for purposes of 
paragraph (b) of this section are as follows: The gas is saturated with 
water vapor at 60 degrees Fahrenheit under a pressure equivalent to that 
of 30.00 inches of mercury at 32 degrees Fahrenheit, under standard 
gravitational force (980.665 centimeters per second squared).

[Order 581, 60 FR 53072, Oct. 11, 1995]