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ASME STP-PT-049
INVESTIGATION OF TEMPERATURE DERATING FACTORS FOR HIGH-STRENGTH LINE PIPE
Organization:
ASME - ASME International
Year: 2012
Abstract: Introduction
The current ASME B31.8 standard ("the Code") requires no derating of line pipe steels for temperatures below 250°F. For pipeline steels in the Grade X60-X70 range, data show that a reduction of the yield strength may be exhibited at temperatures below 250 °F in some cases. For example, Figure 1 presents a reduction in measured yield strength with increasing temperature above 50°C (122°F) in high strength line pipe observed by one manufacturer. Some pipeline design standards developed for other countries (e.g., Norway, Netherlands, and Australia) already apply derating factors at temperatures well below 250°F. Thus, the ASME derating factors are in need of review.
The goal of this project is to develop an understanding of available information, identify the range of line pipe steel grades that may be affected, identify the potential impacts to ASME pipeline and piping design standards, and make recommendations for further study or experimental investigation as necessary.
The current ASME B31.8 standard ("the Code") requires no derating of line pipe steels for temperatures below 250°F. For pipeline steels in the Grade X60-X70 range, data show that a reduction of the yield strength may be exhibited at temperatures below 250 °F in some cases. For example, Figure 1 presents a reduction in measured yield strength with increasing temperature above 50°C (122°F) in high strength line pipe observed by one manufacturer. Some pipeline design standards developed for other countries (e.g., Norway, Netherlands, and Australia) already apply derating factors at temperatures well below 250°F. Thus, the ASME derating factors are in need of review.
The goal of this project is to develop an understanding of available information, identify the range of line pipe steel grades that may be affected, identify the potential impacts to ASME pipeline and piping design standards, and make recommendations for further study or experimental investigation as necessary.
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ASME STP-PT-049
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| contributor author | ASME - ASME International | |
| date accessioned | 2017-09-04T15:27:04Z | |
| date available | 2017-09-04T15:27:04Z | |
| date copyright | 2012.09.28 | |
| date issued | 2012 | |
| identifier other | NQGKHFAAAAAAAAAA.pdf | |
| identifier uri | https://yse.yabesh.ir/std/handle/yse/27956 | |
| description abstract | Introduction The current ASME B31.8 standard ("the Code") requires no derating of line pipe steels for temperatures below 250°F. For pipeline steels in the Grade X60-X70 range, data show that a reduction of the yield strength may be exhibited at temperatures below 250 °F in some cases. For example, Figure 1 presents a reduction in measured yield strength with increasing temperature above 50°C (122°F) in high strength line pipe observed by one manufacturer. Some pipeline design standards developed for other countries (e.g., Norway, Netherlands, and Australia) already apply derating factors at temperatures well below 250°F. Thus, the ASME derating factors are in need of review. The goal of this project is to develop an understanding of available information, identify the range of line pipe steel grades that may be affected, identify the potential impacts to ASME pipeline and piping design standards, and make recommendations for further study or experimental investigation as necessary. | |
| language | English | |
| title | ASME STP-PT-049 | num |
| title | INVESTIGATION OF TEMPERATURE DERATING FACTORS FOR HIGH-STRENGTH LINE PIPE | en |
| type | standard | |
| page | 40 | |
| status | Active | |
| tree | ASME - ASME International:;2012 | |
| contenttype | fulltext |