DEVELOPMENT OF ACCIDENT EVENT TREES AND EVALUATION OF SAFETY SYSTEM FAILURE MODES FOR THE NUCLEAR ULTRA LARGE CRUDE CARRIER (ULCC)

Various ship accidents which have the potential of causing damage to the nuclear power systems of the nuclear powered Ultra Large Crude Carrier (ULCC) are identified. For each ship accident, an event tree is developed which shows the possible causal relationship between ship accident and derangement of nuclear safety-related systems. System state diagrams are developed which define the degree of availability of each safety-related system. As an example of the use of the methodology, availability state tables are derived for each safety-related system for all potential results of a collision accident. Further, an analytic set of probability equations are derived relating the probability of loss-of-function, either partial or complete, of the low pressure safety injection system to the various consequences of a collision.

• Supplemental Notes:
  • Supersedes NUS-1548.
• Corporate Authors:

  NUS Corporation

  4 Research Place
  Rockville, MD  United States  20850

  Maritime Administration

  Office of Advanced Ship Construction, 1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Coffey, R S
  • Goodwin, E F
  • Lewe, C K
  • Maltese, J G
  • Pyatt, D W
• Publication Date: 1977-2

Media Info

• Pagination: 167 p.

Subject/Index Terms

• TRT Terms: Crashes; Explosions; Failure; Fires; Marine safety; Nuclear powered ships; Nuclear reactors; Safety; Safety engineering; Ships; Supertankers; Tankers; Trees (Mathematics); Water transportation crashes
• Uncontrolled Terms: Ship fires
• Old TRIS Terms: Failure mode; Nuclear reactor accidents; Nuclear reactor safety; Tanker explosions; Tanker safety; Tanker ships
• Subject Areas: Marine Transportation; Safety and Human Factors; Vehicles and Equipment;

Filing Info

• Accession Number: 00169605
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: MA-RD-920-77092 Final Rpt., NUS-1845
• Contract Numbers: MA-T-38160
• Files: TRIS, USDOT
• Created Date: Mar 14 1978 12:00AM