Pressure of gas.

69-09-01-05. Pressure of gas. 1. Maximum and minimum limits. The pressure of gas supplied by any utility, as measured at the outlet of the service pipe to any customer, or in the case of high pressure systems at the outlet of the house governor, should be maintained as uniform as practicable. For artificial gas service the pressure should never be less than three inches or more than twelve inches of water pressure. For natural gas service the pressure should never be less than three ounces or more than twelve ounces. Customers desiring service at greater than the maximum allowable should request in writing that a higher service be maintained and shall also pay any additional expense incurred, over and above the regular cost of service at the standard pressure, in providing and maintaining a special service. 2. Artificial gas. At any one outlet between the hours of six a.m. and seven p.m. of any one day, the variation of pressure shall not be greater than the following: Minimum Pressure Greatest Variation Maintained Permissible 3 inches 2 inches 3-4 inches 2 1/2 inches 4-5 inches 3 inches 5-6 inches 3 1/2 inches 6-8 inches 4 inches 3. Natural gas. At any one outlet the variation of pressure shall not be greater than the following: Minimum Maximum Established Pressure Pressure Pressure Allowable Allowable 4 ounces 3 ounces 6 ounces 6 ounces 3 ounces 9 ounces 8 ounces 4 ounces 12 ounces 4. Variations. A utility shall not be deemed to have violated this section if it can be shown that the variations occurring in gas pressure were caused by unforeseen demand, temporary 3 conditions beyond the control of the utility, individual customer-owned service lines, or pipelines of such size as to render the maintenance of standard pressure variations impracticable. General Authority: NDCC 49-02-11 Law Implemented: NDCC 49-02-11