[Code of Federal Regulations] [Title 46, Volume 2] [Revised as of October 1, 2004] From the U.S. Government Printing Office via GPO Access [CITE: 46CFR61.30-1] [Page 294] TITLE 46--SHIPPING CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) PART 61_PERIODIC TESTS AND INSPECTIONS--Table of Contents Subpart 61.30_Tests and Inspections of Fired Thermal Fluid Heaters Sec. 61.30-1 Scope. Source: CGD 80-064, 49 FR 32193, Aug. 13, 1984, unless otherwise noted. The term thermal fluid heater as used in this part includes any fired automatic auxiliary heating unit which uses a natural or synthetic fluid in the liquid phase as the heat exchange medium and whose operating temperature and pressure do not exceed 204 [deg]C (400 [deg]F) and 225 psig, respectively. Thermal fluid heaters having operating temperatures and pressures higher than 204 [deg]C (400 [deg]F) and 225 psig, respectively, are inspected under subpart 61.05--Tests and Inspections of Boilers.