Nautilus Pipeline Company, LLC

Original Volume No. 1

Effective Date: 04/05/2010, Docket: RP10-475-000, Status: Effective

First Revised Sheet No. 103 First Revised Sheet No. 103

Superseding: Original Sheet No. 103

GENERAL TERMS AND CONDITIONS

5. MEASUREMENT & MEASUREMENT EQUIPMENT con't

(b) Computation. The RTU shall, as a minimum, perform flow

calculations per AGA-3, AGA-7, and AGA-8 requirements. As

the flow calculation methods are revised from time to time,

new releases shall be implemented within twelve (12) Months

from the release date. At Transporter's option, Transporter

may use other methods of computation which are generally

accepted in the industry. All measured variables for

differential pressure, static pressure and temperature shall

be sampled at least once per second. All volume

calculations shall be made at least once per second.

Calculation of supercompressibility shall occur at least

once every thirty (30) seconds.

that utilization of a correct password will be required

before data can be accessed or any parameters can be

changed. A computer log shall be made of all changes to the

configuration.

(d) Safety Standards. The EGM system shall meet the standards

for Class 1, Division 2, Group D installations.

(e) Power. The RTU and the related hardware shall run on re-

chargeable batteries which can be charged by either 120VAC,

24VDC or solar panels. The battery capacity shall be at

least twenty-four (24) hours when fully charged.

(f) Local Display. To the extent practicable, Transporter shall

monitor volume information being recorded by the measurement

system on an ongoing basis with either RTU display or

transmitters with local display.