An Exacting Wall-Penetration Pipe Analysis

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KOC, Pino .
An Exacting Wall-Penetration Pipe Analysis. 
Strojniški vestnik - Journal of Mechanical Engineering, [S.l.], v. 65, n.3, p. 189-197, march 2019. 
ISSN 0039-2480.
Available at: <https://www.sv-jme.eu/article/an-exacting-wall-penetration-pipe-analysis/>. Date accessed: 23 oct. 2021. 
doi:http://dx.doi.org/10.5545/sv-jme.2018.5651.
Koc, P.
(2019).
An Exacting Wall-Penetration Pipe Analysis.
Strojniški vestnik - Journal of Mechanical Engineering, 65(3), 189-197.
doi:http://dx.doi.org/10.5545/sv-jme.2018.5651
@article{sv-jmesv-jme.2018.5651,
	author = {Pino  Koc},
	title = {An Exacting Wall-Penetration Pipe Analysis},
	journal = {Strojniški vestnik - Journal of Mechanical Engineering},
	volume = {65},
	number = {3},
	year = {2019},
	keywords = {dented pipeline; seismic; ASME; stress categorization; Link-Seal},
	abstract = {Conventional analysis methods for piping systems have incorporated many conservative assumptions. Some of these assumptions can be abandoned by employing advanced analyses, thus allowing for higher loads, which can lead to further uprating of the system without physically intervening with it. This paper shows the procedure of uprating the design seismic load of an existing pipeline through advanced analyses. First, it was discovered that the seal between the pipe and the wall in fact represents a support which is even stiffer than an engineered, purposely built support. Secondly, analyses demonstrate that a pipeline built of thin wall pipes can sustain significant lateral deformation (ovalization and indentation), imposed by seismically induced relative displacements between the buried pipe and building wall penetration, without breaching the pipe wall. This finding is supported by the fact that the pipe passed the flattening test. In the pipeline qualification procedure, the stress state in the dented pipe wall is compared with the stress state during the flattening test. All relevant stress indicators (stress intensities) at the uprated loading state were smaller than allowed by the applicable code or obtained from the flattening test; thus, the pipeline qualified for uprated seismic conditions.},
	issn = {0039-2480},	pages = {189-197},	doi = {10.5545/sv-jme.2018.5651},
	url = {https://www.sv-jme.eu/article/an-exacting-wall-penetration-pipe-analysis/}
}
Koc, P.
2019 March 65. An Exacting Wall-Penetration Pipe Analysis. Strojniški vestnik - Journal of Mechanical Engineering. [Online] 65:3
%A Koc, Pino 
%D 2019
%T An Exacting Wall-Penetration Pipe Analysis
%B 2019
%9 dented pipeline; seismic; ASME; stress categorization; Link-Seal
%! An Exacting Wall-Penetration Pipe Analysis
%K dented pipeline; seismic; ASME; stress categorization; Link-Seal
%X Conventional analysis methods for piping systems have incorporated many conservative assumptions. Some of these assumptions can be abandoned by employing advanced analyses, thus allowing for higher loads, which can lead to further uprating of the system without physically intervening with it. This paper shows the procedure of uprating the design seismic load of an existing pipeline through advanced analyses. First, it was discovered that the seal between the pipe and the wall in fact represents a support which is even stiffer than an engineered, purposely built support. Secondly, analyses demonstrate that a pipeline built of thin wall pipes can sustain significant lateral deformation (ovalization and indentation), imposed by seismically induced relative displacements between the buried pipe and building wall penetration, without breaching the pipe wall. This finding is supported by the fact that the pipe passed the flattening test. In the pipeline qualification procedure, the stress state in the dented pipe wall is compared with the stress state during the flattening test. All relevant stress indicators (stress intensities) at the uprated loading state were smaller than allowed by the applicable code or obtained from the flattening test; thus, the pipeline qualified for uprated seismic conditions.
%U https://www.sv-jme.eu/article/an-exacting-wall-penetration-pipe-analysis/
%0 Journal Article
%R 10.5545/sv-jme.2018.5651
%& 189
%P 9
%J Strojniški vestnik - Journal of Mechanical Engineering
%V 65
%N 3
%@ 0039-2480
%8 2019-03-27
%7 2019-03-27
Koc, Pino.
"An Exacting Wall-Penetration Pipe Analysis." Strojniški vestnik - Journal of Mechanical Engineering [Online], 65.3 (2019): 189-197. Web.  23 Oct. 2021
TY  - JOUR
AU  - Koc, Pino 
PY  - 2019
TI  - An Exacting Wall-Penetration Pipe Analysis
JF  - Strojniški vestnik - Journal of Mechanical Engineering
DO  - 10.5545/sv-jme.2018.5651
KW  - dented pipeline; seismic; ASME; stress categorization; Link-Seal
N2  - Conventional analysis methods for piping systems have incorporated many conservative assumptions. Some of these assumptions can be abandoned by employing advanced analyses, thus allowing for higher loads, which can lead to further uprating of the system without physically intervening with it. This paper shows the procedure of uprating the design seismic load of an existing pipeline through advanced analyses. First, it was discovered that the seal between the pipe and the wall in fact represents a support which is even stiffer than an engineered, purposely built support. Secondly, analyses demonstrate that a pipeline built of thin wall pipes can sustain significant lateral deformation (ovalization and indentation), imposed by seismically induced relative displacements between the buried pipe and building wall penetration, without breaching the pipe wall. This finding is supported by the fact that the pipe passed the flattening test. In the pipeline qualification procedure, the stress state in the dented pipe wall is compared with the stress state during the flattening test. All relevant stress indicators (stress intensities) at the uprated loading state were smaller than allowed by the applicable code or obtained from the flattening test; thus, the pipeline qualified for uprated seismic conditions.
UR  - https://www.sv-jme.eu/article/an-exacting-wall-penetration-pipe-analysis/
@article{{sv-jme}{sv-jme.2018.5651},
	author = {Koc, P.},
	title = {An Exacting Wall-Penetration Pipe Analysis},
	journal = {Strojniški vestnik - Journal of Mechanical Engineering},
	volume = {65},
	number = {3},
	year = {2019},
	doi = {10.5545/sv-jme.2018.5651},
	url = {https://www.sv-jme.eu/article/an-exacting-wall-penetration-pipe-analysis/}
}
TY  - JOUR
AU  - Koc, Pino 
PY  - 2019/03/27
TI  - An Exacting Wall-Penetration Pipe Analysis
JF  - Strojniški vestnik - Journal of Mechanical Engineering; Vol 65, No 3 (2019): Strojniški vestnik - Journal of Mechanical Engineering
DO  - 10.5545/sv-jme.2018.5651
KW  - dented pipeline, seismic, ASME, stress categorization, Link-Seal
N2  - Conventional analysis methods for piping systems have incorporated many conservative assumptions. Some of these assumptions can be abandoned by employing advanced analyses, thus allowing for higher loads, which can lead to further uprating of the system without physically intervening with it. This paper shows the procedure of uprating the design seismic load of an existing pipeline through advanced analyses. First, it was discovered that the seal between the pipe and the wall in fact represents a support which is even stiffer than an engineered, purposely built support. Secondly, analyses demonstrate that a pipeline built of thin wall pipes can sustain significant lateral deformation (ovalization and indentation), imposed by seismically induced relative displacements between the buried pipe and building wall penetration, without breaching the pipe wall. This finding is supported by the fact that the pipe passed the flattening test. In the pipeline qualification procedure, the stress state in the dented pipe wall is compared with the stress state during the flattening test. All relevant stress indicators (stress intensities) at the uprated loading state were smaller than allowed by the applicable code or obtained from the flattening test; thus, the pipeline qualified for uprated seismic conditions.
UR  - https://www.sv-jme.eu/article/an-exacting-wall-penetration-pipe-analysis/
Koc, Pino"An Exacting Wall-Penetration Pipe Analysis" Strojniški vestnik - Journal of Mechanical Engineering [Online], Volume 65 Number 3 (27 March 2019)

Authors

Affiliations

  • University of Ljubljana, Faculty of Mathematics and Physics 1

Paper's information

Strojniški vestnik - Journal of Mechanical Engineering 65(2019)3, 189-197

https://doi.org/10.5545/sv-jme.2018.5651

Conventional analysis methods for piping systems have incorporated many conservative assumptions. Some of these assumptions can be abandoned by employing advanced analyses, thus allowing for higher loads, which can lead to further uprating of the system without physically intervening with it. This paper shows the procedure of uprating the design seismic load of an existing pipeline through advanced analyses. First, it was discovered that the seal between the pipe and the wall in fact represents a support which is even stiffer than an engineered, purposely built support. Secondly, analyses demonstrate that a pipeline built of thin wall pipes can sustain significant lateral deformation (ovalization and indentation), imposed by seismically induced relative displacements between the buried pipe and building wall penetration, without breaching the pipe wall. This finding is supported by the fact that the pipe passed the flattening test. In the pipeline qualification procedure, the stress state in the dented pipe wall is compared with the stress state during the flattening test. All relevant stress indicators (stress intensities) at the uprated loading state were smaller than allowed by the applicable code or obtained from the flattening test; thus, the pipeline qualified for uprated seismic conditions.

dented pipeline; seismic; ASME; stress categorization; Link-Seal