curtailment plan
(3) The term “curtailment plan” means a plan (including any modification of such plan required by the Natural Gas Policy Act of 1978 [ 15 U.S.C. 3301 et seq.] ) in effect under the Natural Gas Act [ 15 U.S.C. 717 et seq.] which provides for recognizing and implementing priorities of service during periods of curtailed deliveries.