(a) Appeal service is a re-evaluation of the compliance of a piece of equipment, portion of a piece of equipment, or utensil to design or fabrication criteria according to the standards prescribed by this subpart.

(b) Only the original applicant or their representative may request appeal service requesting a reevaluation of the original determination of the design and fabrication of the equipment or utensil for compliance with the standards specified in this subpart.

(c) Appeal service will not be furnished for:

(1) A piece of equipment, portion of a piece of equipment, or utensil which has been altered or has undergone a material change since the original service.

(2) For the purpose of obtaining an up-to-date report or certificate which does not involve a question as to the correctness of the original service for the piece of equipment, portion of a piece of equipment, or utensil.