National Fuel Gas Supply Corporation

Fourth Revised Volume No. 1

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

Original Sheet No. 477A Original Sheet No. 477A : Effective

GENERAL TERMS AND CONDITIONS

33. OPERATIONAL FLOW ORDERS (Cont'd)

(iii) A notification to a Shipper pursuant to Section 14.6 of

these General Terms and Conditions that it must correct

or avoid an imbalance; or

(iv) A declination by Transporter to schedule EFT service in

conflict with the Operating Protocol for EFT service,

pursuant to the first sentence of Section 2.10 of the

EFT Rate Schedule.

33.2 Standards for the Beginning and End of OFO's

(a) General

Transporter, in its reasonable discretion, shall have the

right to issue OFO's upon determination by Transporter that

action is required in order to alleviate conditions which

threaten the integrity of Transporter's system, to maintain

pipeline operations at the pressure required to provide

reliable firm services, to have adequate supplies in the

system to deliver on demand, to maintain and protect the

integrity and performance capability of Transporter's storage

fields, to maintain firm service to all shippers and for all

firm services, and to maintain the system in balance for the

foregoing purposes. To the extent feasible, Transporter shall

direct such OFO's to those shippers causing the condition that

necessitates issuance of the OFO. As soon as the conditions

giving rise to an OFO have been corrected or are no longer

present, the OFO shall be terminated.

(b) Pipeline Specific Standards

On Transporter's system, the circumstances which may result in

an OFO include, without limitation, the following:

(i) Unavailability of compression facilities, as a result of

planned work or the necessity to make repairs;

(ii) Unavailability of storage facilities, as a result of

planned work, including periodic pressure tests, or the

necessity to make repairs;

(iii) Unavailability of pipeline facilities, as a result of

planned work or the necessity to make repairs;