Based on an experimental program, including both individual components and piping system, CEA has evaluated the margins coming from present design procedures and has developed sound analytical methods that allow for a modelization, in the linear or nonlinear domain. For industrial purposes, simplified methods are proposed that are much less time-consuming than nonlinear time-history calculations, but much more accurate than linear methods. They are devoted to a better evaluation of the global behavior (internal moments in the piping system or reactions in supports, displacements, rotations).

Issue Section:
Research Papers
Topics:
Piping systems, Analytical methods, Design
1.
ASME, Edition July 1992, “Boiler and Pressure Vessel Code,” Section III, Division 1, Subsection NB.
2.
Caughey
T. K.
,
1963
, “
Equivalent Linearization Techniques
,”
The Journal of the Acoustical Society of America
, Vol.
35
, No.
11
, Nov. pp.
1706
–
1711
.
3.
Le Breton, F., Touboul, F., and Blanchard, M. T., 1995, “Piping Seismic Design Criteria: Design of a Seismic Test,” Smirt 13, Porto Allegre, Brazil.
4.
RCC-MR, 1994 edition, “Design and Construction Rules for Mechanical Components of FBR Nuclear Islands,” Section I, Subsection B: Class 1 Components.
5.
Touboul, F., Ben Jdidia, M., and Acker, D., 1989, “Design Rules for Piping: Experimental Validation of Flexibility and Elastic Stress Indices for Elbows Under Bending,” Smirt 10, Anaheim, CA.
6.
Touboul, F., 1995, “Piping Seismic Design Criteria: Fatigue-Ratchetting Behavior Under High Cyclic Loading,” Smirt 13, Porto Allegre, Brazil.
7.
Touboul, F., Blay, N., Blanchard, M. T., and Le Breton, F., 1997a, “Piping Seismic Design Criteria: Experimental Evaluation,” Smirt 14, Lyon, France.
8.
Touboul, F., Blay, N., Blanchard, M. T., and Le Breton, F., 1997b, “Piping Seismic Design Criteria: Experimental Evaluation and Tests Simulations,” PVP Conference, Orlando, FL.
9.
Touboul, F., Lacire, M. H., Blay, N., Blanchard, M. T., and Le Breton, F., 1998, “Simplified Methods for the Evaluation of the Seismic Behaviour of Piping System for Criteria Application,” PVP Conference, San Diego, CA.
10.
WRC, 1993, “Alternatives Methods for Seismic Analysis of Piping Systems,” Welding Research Council Bulletin 379, Feb.
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