Residual stress measurement results in refinery vessels
Conference
·
OSTI ID:403189
- Stress Engineering Services, Inc., Houston, TX (United States)
- Shell Oil Co., Houston, TX (United States)
Residual stress measurements inside large diameter refinery vessels have been performed during several turn-a-round inspection and repair efforts. The Blind Hole Drilling (BHD) technique with depth monitoring system provided reliable residual stress measurement within the limited time constraint of a plant turn-a-round process. The results indicated high residual stress near repaired welds even if they had been post weld heat treated. The trend was dominant near highly constrained areas. This approach provides a fact based Fitness For Service (FFS) assessment for continued service. Field measurements of residual stress provide a qualitative measure of the effectiveness of post weld heat treatments (PWHT), and the susceptibility to wet H{sub 2}S cracking. This paper reviews the results of several of these applications using the BHD method in field conditions and laboratory calibrations.
- OSTI ID:
- 403189
- Report Number(s):
- CONF-960706--; ISBN 0-7918-1774-1
- Country of Publication:
- United States
- Language:
- English
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