NS SAVANNAH ANALYSIS OF MAIN STEAM STOP VALVE CLOSURE

Two main steam stop valves in the N.S. Savannah are opened by control air and kept open by a latching solenoid which has to be energized for closing the valves. Unlatching and closing operations are controlled by manual push button located on the main control console. Main propulsion and maneuvering valves are motor operated by two-speed motors, but can also be manually operated. These valves, interlocked with the scram signal, close in at slow valve speed if a scram is actuated. Main turbine, turbine generators, and boiler feed pumps also have protection interlocks which trip the main admission valve of each machine in case of overspeeding, low oil pressure, and other dangerous operating conditions. The main steam line valves are analyzed with respect to interlocking with the safety system and the resulting effects due to inadvertent operation. Plant conditions and necessary corrective actions following these valve operations are determined.

• Supplemental Notes:
  • This document is available for review at the Department of Commerce Library, Main Commerce Building, Washington, D.C., under reference number ESI-49-2.
• Corporate Authors:

  Ebasco Services Incorporated

  Two Rector Street
  New York, NY  United States 

  States Marine Lines, Incorporated

  ,    
• Publication Date: 1961-11-24

Media Info

• Features: Appendices; References;
• Pagination: 29 p.

Subject/Index Terms

• TRT Terms: Nuclear powered ships; Nuclear reactors; Operations; Regulation; Safety; Steam
• Old TRIS Terms: Nuclear reactor operation; Nuclear reactor safety; Steam regulation
• Subject Areas: Administration and Management; Marine Transportation; Safety and Human Factors; Vehicles and Equipment;

Filing Info

• Accession Number: 00026363
• Record Type: Publication
• Source Agency: Maritime Administration
• Report/Paper Numbers: ESI-49-2 Intrm Rpt
• Contract Numbers: MA-1889
• Files: TRIS, USDOT
• Created Date: Feb 14 1974 12:00AM