Centra Pipelines Minnesota Inc.

Second Revised Volume No. 2

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Effective Date: 10/16/1991, Docket: RP91-136-002, Status: Effective

Original Sheet No. 24 Original Sheet No. 24 : Effective


the period is not known or agreed upon, such correction


shall be for a period extending over one-half of the time


elapsed since the date of last test, not exceeding a


correction period of forty-five (45) days and shall be billed


or refunded pursuant to Section 6.4.



9.5 In the event a meter is out of service, or registering inaccurately,


the volume of gas being delivered shall be determined:



(a) By using the registration of any check meter or meters if


installed and accurately registering; or, in the absence of


such check meter or meters;



(b) By correcting the error if the percentage of error is


ascertainable by calibration, tests or mathematical


calculation; or if not determined under Sections 9.5(a) or


9.5(b), then;



(c) By estimating the quantity of delivery by deliveries during


periods under similar conditions when the meter was


registering accurately.



9.6 Centra shall preserve for a period of at least six (6) years all test


data, charts and similar records.