Northwest Pipeline Corporation G P
Fourth Revised Volume No. 1
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Effective Date: 01/31/2008, Docket: RP08-130-000, Status: Effective
Original Sheet No. 207 Original Sheet No. 207 : Effective
GENERAL TERMS AND CONDITIONS
4. MEASUREMENT OF GAS (Continued)
4.4 Temperature and Specific Gravity. The following measurement factors
shall be given due consideration.
(a) The temperature of the natural gas flowing through each
meter shall be an assumed temperature arrived at by agreement or
the actual measured temperature.
(b) The specific gravity of the gas shall be determined by the
party operating the meter by calculation, adjusted for any
difference between the specific gravity in the ideal state and in
the real state in accordance with published procedures accepted by
the American Gas Association.
4.5 Notice of Equipment Tests. Unless otherwise agreed to by the
parties, the party operating the measurement facilities shall give notice
to the other party of the time and location of all tests of gas delivered
hereunder or of any equipment used in measuring or determining the nature
or quality of such gas, in order that such other party may conveniently
have its representative present. Should the non-operating party
reasonably not be satisfied with any such test, it shall so notify the
operating party and the operating party shall perform such retests as may
be necessary to assure an accurate test.
4.6 Meter Testing. The accuracy of measurement equipment shall be
verified at reasonable intervals by the party operating such equipment,
and if requested, in the presence of representatives of the other party,
unless otherwise agreed to by the parties. If either party notifies the
other that it desires a special test of any measurement equipment, the
operating party shall cooperate to secure an immediate verification of
the accuracy of such measurement equipment and joint observation of any
adjustments. The payment for all such tests shall be borne by the party
requesting the test, unless otherwise agreed to by the parties.
4.7 Check Meters and Non-Interference. Either party may install and
operate check meters at its option and expense to check the other party's
primary measurement equipment, but measurement of gas shall be by the
measurement equipment of the parties identified in Section 4.3. Such
check meters shall be installed so as not to interfere with the operation
of the primary measurement equipment of such parties. The parties shall