The Paton Welding Journal, 2003, №08

2003 №08 (01)

2003 №08 (03)

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The Paton Welding Journal, 2003, #8, 6-11 pages

Estimation of permissible sizes of welds for mounting T-joints and sleeves on active main pipelines

V.I. Makhnenko, V.S. But, E.A. Velikoivanenko, G.F. Rozynka, N.I. Pivtorak

E.O. Paton Electric Welding Institute of the NASU 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine.

Abstract
Considered is the effect of geometric sizes of pipelines, T-joints and sleeves on permissible sizes of the welds, allowing for variations in the working pressure in a pipeline, as well as variants of a technology for mounting of sleeves (T-joints) without interruption of operation of the pipeline
Keywords: mathematical modelling, ultimate load, tough fracture, two-parameter criterion, sharp cavity, main pipelines, T-joints, sleeve, circumferential welds, weld sizes, working pressure

References

1. API Standard 1104. Welding of pipelines and related facilities. Appendix В-serves welding. Publ. Sept. 1999.
2. Makhnenko, V.I., But, V.S., Velikoivanenko, E.A. (2001) Mathematical modelling of pitting defects in active oil and gas pipelines and development of a numerical methods for estimation of permissible parameters of arc welding repair of defects. The Paton Welding J., 11, 3-10.
3. Makhnenko, V.I., Ryabchuk, T.G. (1991) Computerisation of fillet welded joint design. Avtomatich. Svarka, 11, 1-6.
4. Makhnenko, V.I., Ryabchuk, T.G., Pochinok, V.E. et al. (1995) Prediction of load-carrying capacity of parts of round shaft type in welding with maximum deformations. Ibid., 5, 12-16.
5. Makhnenko, V.I., Ryabchuk, T.G., Pochinok, V.E. (1996) Calculation of resistance of fillet overlap welded joint of cy¬lindrical shells (tubes). Ibid., 3, 3-6.
6. Andrejkiv, A.E. (1982) 3D problems of theory of cracks. Kyiv: Naukova Dumka.
7. Milne, J. (1983) Failure assessment diagrams and estimates: a comparison for ferritic and austenitic steels. Int. J. Pressure Vessels and Piping, 13, 107-125.
8. Makhnenko, V.I., Velikoivanenko, E.A., Makhnenko, O.V. et al. (2000) Investigation of effect of phase transformations on residual stresses in circumferential welding of pipes. The Paton Welding J., 5, 3-8.

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Suggested Citation

V.I. Makhnenko, V.S. But, E.A. Velikoivanenko, G.F. Rozynka, N.I. Pivtorak (2003) Estimation of permissible sizes of welds for mounting T-joints and sleeves on active main pipelines. The Paton Welding J., 08, 6-11 .

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