[Code of Federal Regulations] [Title 46, Volume 4] [Revised as of October 1, 2006] From the U.S. Government Printing Office via GPO Access [CITE: 46CFR109.555] [Page 174] TITLE 46_SHIPPING (This book contains parts 90 to 139) CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) PART 109_OPERATIONS--Table of Contents Subpart G_Miscellaneous Sec. 109.555 Propulsion boilers. The master or person in charge and the engineer in charge shall ensure that-- (a) Steam pressure does not exceed that allowed by the certificate of inspection; and (b) The safety valves, once set, are not tampered with or made inoperative. [CGD 73-251, 43 FR 56828, Dec. 4, 1978, as amended by CGD 95-028, 62 FR 51208, Sept. 30, 1997]