Carnegie Interstate Pipeline Company

Original Volume No. 1

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Effective Date: 01/01/1995, Docket: CP93-552-003, Status: Effective

Original Sheet No. 55 Original Sheet No. 55 : Effective

Superseding: Original Sheet No. 55

GENERAL TERMS AND CONDITIONS

(Continued)

6.6 (Continued)

measurement error in the individual

measurement equipment affected, previous records

of such equipment shall be considered accurate.

(b) If, upon test, any such above

measurement equipment is found to be inaccurate

to the extent that it causes the registered or

computed quantities of the instrument(s) so

affected to be in error by an amount exceeding

two percent (2%) at a recording corresponding to

the average hourly rate of flow through the

instrument(s) in the period since the last

preceding test, then any registrations,

integration, or computed quantities of such

instruments affected shall be corrected to zero

error for any part of the period since the last

test in which such error is known to have

existed or which may be agreed upon by

representatives of the parties. In case the

period of such error is not known definitely or

agreed upon, such correction shall be for a

period of one-half (1/2) of the elapsed time

since the date of the last test, but not

exceeding a correction period of sixteen (16)

days where orifice measurement equipment is used

in the computation of quantity and not exceeding

forty-five (45) days where other measurement

equipment is used.

(c) If no tests have been performed to

determine the degree of inaccuracy, or

measurement equipment is out of service, the

quantity of gas shall be estimated:

(1) By using the registration of

any existing and agreed upon check

equipment considered by parties concerned

to be registering accurately, or, in the

absence of such facilities;

(2) By correcting the error if

the quantity or percentage of error is

ascertainable by calibration, test, or

mathematical calculation, or if neither of

the two foregoing procedures are

applicable;