Indiana Administrative Code
Title 170 - INDIANA UTILITY REGULATORY COMMISSION
Article 6 - WATER UTILITIES
Rule 3 - Central Station Hot Water Heating Utilities
Section 3-9 - Water flow in mains; pressure variations and surveys
Current through March 20, 2024
Authority: IC 8-1-1-3; IC 8-1-2-4
Affected: IC 8-1-2-33; IC 8-1-2-34
Sec. 9.
Pressure and Flow of Water in Mains.
(a) Pressure Variation. The pressure of the water supplied by any utility as measured at the consumer's service where it enters the building shall not indicate a differential pressure of less than one-half pound per square inch working pressure between flow and return pipes and the average pressure in flow and return service pipes shall be sufficient at all times completely to fill all radiators in the consumer's installation.
(b) Pressure Surveys. Each hot water heating utility shall provide itself with the proper gauges and instruments and shall take and record on order of the commission measurements of the water pressures and variations in pressure throughout the system at points indicated on a map of the distribution system on file with the commission.
(c) Flow. The utility shall be equipped and prepared to furnish at least six pounds of water at the consumer's premises per square foot of radiation per hour.
