Oilfield service vehicles.

Notwithstanding § 173.29 of this subchapter, a cargo tank mounted on a transport vehicle used in oilfield servicing operations is not subject to the specification requirements of this subchapter if—

(a) The cargo tank and equipment contains only residual amounts (i.e., it is emptied so far as practicable) of a flammable liquid alone or in combination with water,

(b) No flame producing device is operated during transportation, and

(c) The proper shipping name is preceded by “Residual” on the shipping paper for each movement on a public highway.

[Amdt. 173-196, 51 FR 5971, Feb. 18, 1986]