[Code of Federal Regulations] [Title 46, Volume 1] [Revised as of Octobery 1, 2004] From the U.S. Government Printing Office via GPO Access [CITE: 46CFR30.01-15] [Page 383] TITLE 46--SHIPPING CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY PART 30_GENERAL PROVISIONS--Table of Contents Subpart 30.01_Administration Sec. 30.01-15 Effective date of regulations--TB/ALL. The regulations in this subchapter are not retroactive in effect unless specifically made so at the time the regulations are issued. Changes in specification requirements of articles of equipment, or materials used in construction of tank vessels, shall not apply to such items which have been passed as satisfactory until replacement shall become necessary, unless a specific finding is made that such equipment or material used is unsafe or hazardous and has to be removed from tank vessels. [CGFR 65-50, 30 FR 16657, Dec. 30, 1997, as amended by CGD 95-028, 62 FR 51197, Sept. 30, 1997]