Remaining life evaluation of 2.25Cr -1Mo steel boiler elbow used for a long time

Takuya Ito; Keiji Kubushiro; Isamu Nonaka; Shigemitsu Kihara

doi:10.3184/096034007X277942

Remaining life evaluation of 2.25Cr -1Mo steel boiler elbow used for a long time

Takuya Ito, Keiji Kubushiro, Isamu Nonaka, Shigemitsu Kihara

Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

The high temperature parts of a thermal power boiler are designed by allowing for stress based on 10⁵ h creep rupture strength. As a safety factor is involved in the allowable stress, the parts can be operated for more than 10⁵ h. Actually some units have been operated for over 3 × 10⁵ h. Life evaluation is required for the units operated for such a long time to maintain reliability. Various researches for evaluating residual life have been carried out and some have been applied to actual units. But the results of life evaluation done on actual units have not been verified. In this paper, the verification of life evaluation methods is performed with a weld elbow of steam pipe used for 2.6 × 10⁵ h in an actual plant.

Original language	English
Pages (from-to)	285-288
Number of pages	4
Journal	Materials at High Temperatures
Volume	24
Issue number	4
DOIs	https://doi.org/10.3184/096034007X277942
Publication status	Published - 2007 Dec 1

Keywords

Thermal power boiler
Weld elbow

ASJC Scopus subject areas

Ceramics and Composites
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Access to Document

10.3184/096034007X277942

Fingerprint Dive into the research topics of 'Remaining life evaluation of 2.25Cr -1Mo steel boiler elbow used for a long time'. Together they form a unique fingerprint.

Cite this

@article{7dc2eecca830469090d5605e4aac75df,

title = "Remaining life evaluation of 2.25Cr -1Mo steel boiler elbow used for a long time",

abstract = "The high temperature parts of a thermal power boiler are designed by allowing for stress based on 105 h creep rupture strength. As a safety factor is involved in the allowable stress, the parts can be operated for more than 105 h. Actually some units have been operated for over 3 × 105 h. Life evaluation is required for the units operated for such a long time to maintain reliability. Various researches for evaluating residual life have been carried out and some have been applied to actual units. But the results of life evaluation done on actual units have not been verified. In this paper, the verification of life evaluation methods is performed with a weld elbow of steam pipe used for 2.6 × 105 h in an actual plant.",

keywords = "Thermal power boiler, Weld elbow",

author = "Takuya Ito and Keiji Kubushiro and Isamu Nonaka and Shigemitsu Kihara",

year = "2007",

month = dec,

day = "1",

doi = "10.3184/096034007X277942",

language = "English",

volume = "24",

pages = "285--288",

journal = "Materials at High Temperatures",

issn = "0960-3409",

publisher = "Maney Publishing",

number = "4",

}

TY - JOUR

T1 - Remaining life evaluation of 2.25Cr -1Mo steel boiler elbow used for a long time

AU - Ito, Takuya

AU - Kubushiro, Keiji

AU - Nonaka, Isamu

AU - Kihara, Shigemitsu

PY - 2007/12/1

Y1 - 2007/12/1

N2 - The high temperature parts of a thermal power boiler are designed by allowing for stress based on 105 h creep rupture strength. As a safety factor is involved in the allowable stress, the parts can be operated for more than 105 h. Actually some units have been operated for over 3 × 105 h. Life evaluation is required for the units operated for such a long time to maintain reliability. Various researches for evaluating residual life have been carried out and some have been applied to actual units. But the results of life evaluation done on actual units have not been verified. In this paper, the verification of life evaluation methods is performed with a weld elbow of steam pipe used for 2.6 × 105 h in an actual plant.

AB - The high temperature parts of a thermal power boiler are designed by allowing for stress based on 105 h creep rupture strength. As a safety factor is involved in the allowable stress, the parts can be operated for more than 105 h. Actually some units have been operated for over 3 × 105 h. Life evaluation is required for the units operated for such a long time to maintain reliability. Various researches for evaluating residual life have been carried out and some have been applied to actual units. But the results of life evaluation done on actual units have not been verified. In this paper, the verification of life evaluation methods is performed with a weld elbow of steam pipe used for 2.6 × 105 h in an actual plant.

KW - Thermal power boiler

KW - Weld elbow

UR - http://www.scopus.com/inward/record.url?scp=72649096662&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=72649096662&partnerID=8YFLogxK

U2 - 10.3184/096034007X277942

DO - 10.3184/096034007X277942

M3 - Article

AN - SCOPUS:72649096662

VL - 24

SP - 285

EP - 288

JO - Materials at High Temperatures

JF - Materials at High Temperatures

SN - 0960-3409

IS - 4

ER -

Remaining life evaluation of 2.25Cr -1Mo steel boiler elbow used for a long time

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Cite this