National Fuel Gas Supply Corporation

Fourth Revised Volume No. 1

Effective Date: 10/01/2001, Docket: RP00-399-004, Status: Effective

Original Sheet No. 477B Original Sheet No. 477B : Effective

GENERAL TERMS AND CONDITIONS

33. OPERATIONAL FLOW ORDERS (Cont'd)

(iv) Partial or entire electrical or communication failure

that impairs Transporter's ability to monitor and

control essential facilities;

(v) Severe or unanticipated weather conditions, which can

include unusually cold or warm temperatures for the time

of year, significant differences between prevailing

weather conditions from those forecasted, or sudden

changes in weather conditions; and

(vi) The presence of objectionable matter in gas in any part

of Transporter's system.

33.3 Notice Procedures for OFO's

Transporter will post all notices of OFO's on its Web Site as

expeditiously as is practicable, and, to the extent an operational

flow order is applicable only to specific shippers, Transporter

will notify each such Shipper by facsimile, provided that such

Shipper has provided a facsimile number to Transporter.

Transporter shall update its OFO notices with available information

regarding the operational variables that determine when the OFO

will begin and end. For example, if an OFO will remain in effect

until repairs to a compressor or pipeline are complete, information

regarding the status of the repairs will be posted by Transporter.

Transporter shall post notices concerning planned work at

compressor or other facilities, and scheduled pressure tests of its

storage facilities, which, under reasonably foreseeable

circumstances, may cause Transporter to issue an OFO. Within a

reasonable time following the termination of an OFO, Transporter

shall post a report detailing the factors requiring the issuance of

the OFO and the termination of the OFO.

33.4 Operational Remedies Prior to Issuance of an OFO

Transporter shall, whenever practicable, attempt to obviate the

issuance of an OFO to a particular shipper by (i) temporarily

changing system operations, (ii) seeking the voluntary assistance

of other parties, including, without limitation, shippers and

interconnected facility operators, and (iii) restricting service to

shippers with lower scheduling and curtailment priority.