19 C.F.R. § 115.29 – Plan review.

(a) A manufacturer or owner who wants containers to be approved by design type must submit the plans and specifications for the container to the Certifying Authority.
(b) The Certifying Authority examining the plans and specifications submitted in accordance with paragraph (a) of this section shall:
1. (1) Approve the plans and specifications in accordance with the requirements of § 115.30 and arrange to inspect a container in accordance with § 115.31; or
2. (2) Advise the applicant of any necessary changes to be made for compliance with the requirements of § 115.30.
(c) If changes in the design of the container are made during production but after approval of the plans and specifications by the Certifying Authority and furnish it with “as-built” drawings of the container so that the plans can be reviewed and one or more containers inspected during the production stage to confirm that they continue to comply with the requirements of § 115.30.