Fatigue of LMFBR piping due to flow stratification

Conference · Sat Jan 01 04:00:00 EST 1983 · Am. Soc. Mech. Eng., (Pap.); (United States)

OSTI ID:5693484

Woodward, W S

Flow stratification due to reverse flow was simulated in a 1/5 scale water model of a LMFBR primary pipe loop. The stratified flow was observed to have a dynamic interface region which oscillated in a wave pattern. The behavior of the interface was characterized in terms of location, local temperature fluctuation and duration for various reverse flow conditions. A structural assessment was performed to determine the effects of stratified flow on the fatigue life of the pipe. Both the static and dynamic aspects of flow stratification were examined. The dynamic interface produces thermal striping on the inside of the pipe wall which is shown to have the most deleterious effect on the pipe wall and produce significant fatigue damage relative to a static interface.

• Research Organization: Westinghouse Electric Corp., Madison, PA
• DOE Contract Number: AC15-76CL50003
• OSTI ID: 5693484
• Report Number(s): CONF-830607-
• Conference Information: Journal Name: Am. Soc. Mech. Eng., (Pap.); (United States) Journal Volume: 83-PVP-59
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
210500* -- Power Reactors
Breeding
BREEDER REACTORS
DYNAMIC LOADS
EPITHERMAL REACTORS
FAST REACTORS
FATIGUE
FBR TYPE REACTORS
FLUID FLOW
LIQUID METAL COOLED REACTORS
LMFBR TYPE REACTORS
MECHANICAL PROPERTIES
PIPES
REACTORS
SCALE MODELS
STATIC LOADS
STRATIFICATION
STRESSES
STRUCTURAL MODELS
THERMAL STRESSES