The Paton Welding Journal, 2012, №09



2012 №09 (03)

2012 №09 (05)

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The Paton Welding Journal, 2012, #9, 26-29 pages  

SUBSTANTIATION OF «LEAK-BEFORE-BREAK» CRITERION FOR VERTICAL CYLINDRICAL TANKS FOR OIL STORAGE

V.V. Knysh, A.Yu. Barvinko, Yu.P. Barvinko and A.N. Yashnik

E.O. Paton Electric Welding Institute, NASU, Kiev, Ukraine
 
 
Abstract
The paper gives the results of experimental studies of cyclic crack resistance of samples of butt-welded joints on 06GB-390 steel in the case of oil storage tanks at stable development of a through-thickness fatigue crack, initiating from the notch surface along the fusion line, from the moment of its initiation up to reaching the length of about 30 mm. Large-scale samples of welded joints of 650 x 160 x 20 mm dimensions were tested at harmonic alternating zero-to-tension stress cycle with s_max = 2/3s_y. It is shown that application of rolled sheets of the above-mentioned steel for design rings of tank wall allows, at application of «leak-before-break» criterion, eliminating extended fractures in the wall welded joints.
 
 
Keywords: fatigue crack, development of through-thickness fatigue crack, «leak-before-break» criterion, cyclic loading
 
 
Received:                06.04.12
Published:               28.09.12
 
 
References
 
1. Broek, D. (1980) Elementary engineering fracture mechanics. Moscow: Vysshaya Shkola.
2. TU U 27.1-05416923-085:2006: Rolled sheets welded from quality steel of strength grades 355-590 for machine-building. Introd. 02.04.2007.
3. Paton, B.E., Trufyakov, V.I., Kirian, V.I. (1982) Requirements to toughness of steel for main gas pipelines at mounting of extended fracture arresters in them. Avtomatich. Svarka, 12, 5-9.
4. Karzov, G.P., Leonov, V.P., Timofeev, B.T. (1975) Welded high-pressure vessels. Leningrad: Mashinostroenie.
5. PB 03-605-03: Rules of design of vertical cylindrical steel tanks for petroleum and petroleum products. Moscow.
6. (2003) Instructions on technical supervision, methods of inspection and rejection of pipe furnaces, tanks for petroleum and petroleum products. Moscow.
7. Barvinko, A.Yu., Knysh, V.V., Barvinko, Yu.P. et al. (2012) Development of surface crack-like defect in welded joints of 06GB-390 steel at cyclic loading. The Paton Welding J., 5, 40-42.
8. VBN V.2.3-00018201.04-2000: Strength analysis of operating main pipelines with defects. Kiev.
9. RD 16.01-60.3000-KTN-026-1-04: Codes of design of steel vertical tanks of 1000-50000 m3 volume for petroleum storage. Moscow: AC Transneft.
10. Nichols, R. (1975) Pressure vessel engineering technology. Moscow: Mashinostroenie.
11. GOST 31385-2008: Vertical cylindrical steel tanks for petroleum and petroleum products. General technical requirements. Moscow.
12. Poznyakov, V.D., Barvinko, A.Yu., Barvinko, Yu.P. et al. (2012) Cold resistance and lamellar fracture resistance of welded joints on steel 06GB-390. The Paton Welding J., 3, 35-39.

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Suggested Citation

V.V. Knysh, A.Yu. Barvinko, Yu.P. Barvinko and A.N. Yashnik (2012) SUBSTANTIATION OF «LEAK-BEFORE-BREAK» CRITERION FOR VERTICAL CYLINDRICAL TANKS FOR OIL STORAGE. The Paton Welding J., 09, 26-29.

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