NS SAVANNAH PRIMARY SYSTEM PRE-CRITICAL WATER HAMMER TEST

The results of pre-critical water hammer tests of the primary coolant system of the N. S. Savannah are presented. The testing program was carried out in two phases, and comprised the experimental measurement of water hammer pressures and the associated reactor and loop piping stresses over the temperature range 125 F to 410 F. Weldable electric resistance strain gages were utilized during both phases and pressure cells were used during the first phase. The strain gages were evaluated and tested prior to installation in the loops. The validity of the data was checked by comparison with theoretical predictions when applicable. Included is an evaluation supporting the use of weldable type strain gages to measure both water pressure fluctuations and reactor system stresses. It concludes that strain gages of this type are of great value for this type of stress study. Maximum incremental pressures were encountered during Phase 1 testing. Maximum water hammer pressure occurring during Phase 2 was 157 psi at Check Valve PS-4. This occurred during Run 1 at 185 F and approximately 135 psi loop pressure. Maximum positive incremental mechanical stress was 475 psi at the "Y" junction in the port loop during Run 1 at 298 F and 825 psi.

• Supplemental Notes:
  • This document is available for review at the Department of Commerce Library, Main Commerce Building, Washington, D.C., under reference number BEL-R-205.
• Corporate Authors:

  Brewer Engineering Laboratories, Incorporated

  Marion, MA  United States 
• Authors:
  • Vanstone, R A
• Publication Date: 1961-5-12

Media Info

• Features: Figures; Tables;
• Pagination: 258 p.

Subject/Index Terms

• TRT Terms: Equipment tests; Nuclear powered ships; Nuclear reactor coolants; Nuclear reactors; Reliability; Strain gages; Tests
• Old TRIS Terms: Nuclear reactor testing; Systems reliability; Test evaluation
• Subject Areas: Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00026432
• Record Type: Publication
• Source Agency: Maritime Administration
• Report/Paper Numbers: 205
• Files: TRIS, USDOT
• Created Date: May 11 1973 12:00AM