Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 41-55 |
| Number of pages | 15 |
| Journal | Rakenteiden Mekaniikka |
| Volume | 27 |
| Issue number | 2 |
| Publication status | Published - 1994 |
| MoE publication type | Not Eligible |
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Dynamic post-analysis of a feed water pipe at the Loviisa nuclear power plant. / Saarenheimo, Arja; Eerikäinen, Lauri; Keskinen, Rauli.
In: Rakenteiden Mekaniikka, Vol. 27, No. 2, 1994, p. 41-55.Research output: Contribution to journal › Article › Scientific › peer-review
TY - JOUR
T1 - Dynamic post-analysis of a feed water pipe at the Loviisa nuclear power plant
AU - Saarenheimo, Arja
AU - Eerikäinen, Lauri
AU - Keskinen, Rauli
N1 - Project code: VAL37051
PY - 1994
Y1 - 1994
N2 - A dynamic post-analysis is presented for a sudden pipe break which occurTed in the main feed water ~ystem of the VVER 440 type PWR plant Loviisa 2 on February 25, 1993. A thermal hydraulic code TMOC, based on the method of characteristics, is first used to determine the induced rapid two phase fluid transients. The resulting pressure and momentum flux histories are then applied as an excitation in a nonlinear structural dynamic analysis which makes use of the general purpose finite element code ABAQUS. The permanent relative displacement of the broken pipe ends is finally compared with the value observed after the event. An underestimate of some 30% may for the most part be attributed to scant experimental data and uncertainties in boundary conditions. Assumptions regarding impact against a nearby beam structure and the dynamic stress-strain curve of the fenitic pipe material strongly affect this comparison.
AB - A dynamic post-analysis is presented for a sudden pipe break which occurTed in the main feed water ~ystem of the VVER 440 type PWR plant Loviisa 2 on February 25, 1993. A thermal hydraulic code TMOC, based on the method of characteristics, is first used to determine the induced rapid two phase fluid transients. The resulting pressure and momentum flux histories are then applied as an excitation in a nonlinear structural dynamic analysis which makes use of the general purpose finite element code ABAQUS. The permanent relative displacement of the broken pipe ends is finally compared with the value observed after the event. An underestimate of some 30% may for the most part be attributed to scant experimental data and uncertainties in boundary conditions. Assumptions regarding impact against a nearby beam structure and the dynamic stress-strain curve of the fenitic pipe material strongly affect this comparison.
M3 - Article
VL - 27
SP - 41
EP - 55
JO - Rakenteiden Mekaniikka
JF - Rakenteiden Mekaniikka
SN - 0783-6104
IS - 2
ER -