Analysis of LOFT pressurizer spray and surge nozzles to include a 450/sup 0/F step transient

Technical Report · Wed Jan 18 04:00:00 EST 1978

DOI:https://doi.org/10.2172/5125000· OSTI ID:5125000

Nitzel, M. E.

This report presents the analysis of the LOFT pressurizer spray and surge nozzles to include a 450/sup 0/F step thermal transient. Previous analysis performed under subcontract by Basic Technology Incorporated was utilized where applicable. The SAASIII finite element computer program was used to determine stress distributions in the nozzles due to the step transient. Computer results were then incorporated in the necessary additional calculations to ascertain that stress limitations were not exceeded. The results of the analysis indicate that both the spray and surge nozzles will be within stress allowables prescribed by subsubarticle NB-3220 of the 1974 edition of the ASME Boiler and Pressure Vessel Code when subjected to currently known design, normal operating, upset, emergency, and faulted condition loads.

• Research Organization: Idaho National Engineering Lab., Idaho Falls (USA)
• DOE Contract Number: EY-76-C-07-1570
• OSTI ID: 5125000
• Report Number(s): LTR-1144-38; RE-A-78-012
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
220600* -- Nuclear Reactor Technology-- Research
Test & Experimental Reactors
LOFT REACTOR
NOZZLES
PRESSURIZERS
PWR TYPE REACTORS
REACTORS
RESEARCH AND TEST REACTORS
STRESS ANALYSIS
STRESSES
TANK TYPE REACTORS
TEST REACTORS
THERMAL STRESSES
TRANSIENTS
WATER COOLED REACTORS
WATER MODERATED REACTORS