National Fuel Gas Supply Corporation

Third Revised Volume No. 1

Effective Date: 04/01/1997, Docket: RP97-201-000, Status: Effective

First Revised Sheet No. 140 First Revised Sheet No. 140 : Superseded

Superseding: Original Sheet No. 140

GENERAL TERMS AND CONDITIONS

4. MEASURING EQUIPMENT (Cont'd.)

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

measurement equipment if installed and accurately registering,

or in the absence of "(a)";

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

tainable by calibration, test or mathematical calculation or,

in the absence of both "(a)" and "(b)", then;

to receipts or deliveries during periods under similar

conditions when the meter was registering accurately.

4.7 Accuracy of Measuring Equipment. The accuracy of Transporter's or

Operator's measuring equipment shall be verified at reasonable

intervals, and if requested, in the presence of representatives of

Operator or Transporter, but neither party shall be required to

verify the accuracy of equipment more frequently than once in any

thirty (30)-day period. In the event either party shall notify the

other that it desires a special test of any measuring equipment,

the parties shall cooperate to secure a prompt verification of the

accuracy of such equipment. The expense of any special test, if

called for, shall be borne by the requesting party if the measuring

equipment tested is found to be in error by no more than two

percent.

4.8 Correction of Measuring Equipment Errors. If, upon test, any

measuring equipment is found to be in error not more than 2%,

previous recordings of such equipment shall be considered accurate

in computing deliveries hereunder; but such equipment shall be

adjusted at once to record correctly.

If, upon test, any measuring equipment shall be found to be

inaccurate by an amount exceeding 2%, any previous recordings of

such equipment shall be corrected to zero (0) error for any period

which is known definitely or agreed upon, but in case the period is

not known definitely 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 sixteen (16)

days.