New York Codes, Rules and Regulations › Title 16 - DEPARTMENT OF PUBLIC SERVICE › Chapter III - GAS UTILITIES › Subchapter A - Service › Part 229 - Gas Standards › Specific Gravity › Section 229.20 - Equipment and testing procedure

Current through Register Vol. 46, No. 28, July 10, 2024
Within 30 days of the effective date hereof, each company
						distributing natural gas shall advise this commission, by a letter signed by a
						responsible official of the company, of the manner in which the specific
						gravity of said gas is determined at or before each respective source of the
						gas. Each company's statement shall include the locations where said
						determinations are made, the name of the transmission corporation or company
						making said determinations at each location, information indicating that the
						samples tested in said determinations at each location are representative of
						the gas distributed by the company, the types of specific gravity equipment
						used in said determinations at each location and a summary of the procedure
						employed at each location for making said determinations and verifying their
						accuracy.
(a) Determination for
					 metering purposes.
(1) Where a company
					 distributes natural gas that has had its specific gravity determined by the
					 relevant transmission corporation in a manner adequate for orifice and other
					 types of velocity metering at a testing station fully complying with the
					 provisions of subdivision (b) of section
					 229.50, and
					 section
					 229.51,
					 with its total chemical composition unchanged from the location of specific
					 gravity determination to the location of consumption, specific gravity
					 equipment need not be installed in its testing station testing said gas
					 provided that said company is periodically supplied with reports regarding the
					 specific gravity of the gas. Said reports shall also include suitable
					 identifying data such as the source of each gas sample tested, the date that it
					 was taken, the date, method and location of test, etc. and sufficient
					 information to demonstrate that each sample is representative of the gas
					 delivered to the company, that its specific gravity has been determined in a
					 manner adequate for orifice and other types of velocity metering and that the
					 equipment used to determine the specific gravity of the gas is periodically
					 adjusted and calibrated in accordance with the provisions of subdivision (a) of
					 section
					 229.21.
(2) Where a company distributes gas that has
					 not had its specific gravity determined in a manner adequate for orifice and
					 other types of velocity metering at a testing station fully complying with the
					 provisions of subdivision (b) of section
					 229.50, and
					 section
					 229.51 
					 or that does not have its total chemical composition unchanged from the
					 location of specific gravity determination to the location of consumption, part
					 of which is distributed to a consumer with an orifice or other type of velocity
					 meter, said company shall
(i) provide each of
					 its testing stations testing said gas required herein by section
					 229.50(a)-(d) 
					 of this Part with a recording gravitometer fully complying and standardized,
					 maintained, adjusted and calibrated in full compliance with the provisions
					 therefor of the relevant effective code of the American Society for Testing
					 Materials, the presently effective code being entitled "Standard Methods of
					 Test for Specific Gravity of Gaseous Fuels (D 1070-52)" (the presently
					 effective code hereinafter referred to as ASTM D 1070), and the recommendations
					 therefor of pages 76 through 95 of Miscellaneous Publication M 177 of the
					 National Bureau of Standards entitled "Tests of Instruments for the
					 Determination, Indication, or Recording of the Specific Gravities of Gases"
					 (hereinafter referred to as NBS M 177) and
(ii) operate said recording gravitometer
					 likewise in full compliance with said codes.