Technical Briefs

Guidelines for Repair Welding of Pressure Equipment in Refineries and Chemical Plants

[+] Author and Article Information
Eiichi Yamamoto

Fujisawa, Japan
e-mail: ei.yama@jcom.home.ne.jp

Keisuke Shiga

Shinko Plantech Co, Ltd.,
Yokohama, Japan
e-mail: shigake@s-plantech.co.jp

Rinzo Kayano

The Japan Steel Works, Ltd.,
Muroran, Japan
e-mail: rinzo_kayano@jsw.co.jp

Tsukasa Okazaki

Taseto Co., Ltd.,
Fujisawa, Japan
e-mail: okazaki.tsukasa@taseto.com

Hirohisa Watanabe

Kobe Steel, Ltd.,
Fujisawa, Japan
e-mail: watanabe.hirohisa@kobelco.com

Tomoaki Kiso

JGC Corporation,
Yokohama, Japan
e-mail: kiso.tomoaki@jgc.co.jp

Takayasu Tahara

Petroleum Association of Japan,
Tokyo, Japan
e-mail: t.tahara@sekiren.gr.jp

Fumiyoshi Minami

Osaka University,
Osaka, Japan
e-mail: minami@mapse.eng.osaka-u.a.c.jp

Contributed by the Pressure Vessel and Piping Division of ASME for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received June 26, 2012; final manuscript received February 4, 2013; published online May 21, 2013. Assoc. Editor: Allen C. Smith.

J. Pressure Vessel Technol 135(3), 034501 (May 21, 2013) (12 pages) Paper No: PVT-12-1087; doi: 10.1115/1.4023729 History: Received June 26, 2012; Revised February 04, 2013

This paper outlines the technical logic/steps that have been documented in JWES-CP-0902, “Guidelines for Repair Welding on Pressure Equipment”(hereinafter the Guidelines). The paper covers the work flow logic that can be followed by maintenance personnel as they address making a repair welding in pressure vessels/piping made of both ferrous and nonferrous materials after flaw detection during inspection during refinery operation. Material degradation factors that are considered include: strength loss, ductility loss, temper embrittlement, σ embrittlement, corrosion metal loss, stress corrosion cracking, fatigue, and creep.

Copyright © 2013 by ASME
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Guidelines for Repair Welding on Pressure Equipment, Japan Welding Engineering Standard, JWES-CP-0902, Nov. 2009.
Yamamoto, E., Tahara, T., and Minami, F., “Guidelines for Repair Welding in Pressure Equipment in Refineries and Chemical Plants—Part 1: General,” ASME Paper No. PVP2011-57809.
Yamamoto, E., Hara, Y., Tahara, T., and Minami, F., “Development of Repair Welding Guidelines on Pressure Equipment in Refineries and Chemical Plants,” ASME Paper No. PVP2008-61891.
“Methods of Post Weld Heat Treatment,” Japan Industrial Standard, JIS Z-3700, 2009.
Shiga, K., Hirai, Y., and Ogayu, Y., “Guidelines for Repair Welding of Pressure Equipment in Refineries and Chemical Plants—Part 2: Repair Welding Methods,” ASME Paper No. PVP2011-57289.
Kayano, R., Abe, M., Hirai, Y., and Katayama, N., “Guidelines for Repair Welding of Pressure Equipment in Refineries and Chemical Plants—Part 3: Repair Welding for Specific Materials—Carbon Steel, High Tensile Steel and Cr-Mo Steel,” ASME Paper No. PVP2011-57079.
“Weld Repair for Pressure Vessels Made From Cr-Mo Steels,” ASME Paper No. PVP2010-25971.
Okazaki, T., Kayano, R., Niimoto, S., and Hoshika, T., “Guidelines for Repair Welding of Pressure Equipment in Refineries and Chemical Plants, Part 4: Repair Welding for Specific Material—Stainless Steel, Clad Steel and Dissimilar Joints,” ASME Paper No. PVP2011-57142.
Watanabe, H., Shiga, K., and Ohno, A., “Guidelines for Repair Welding of Pressure Equipment in Refineries and Chemical Plants—Part 5: Repair Welding for Heat Resistance Alloy and Non-Ferrous Metals,” ASME Paper No. PVP2011-57788.
Kiso, T., Kayano, R., Nagashima, E., and Hara, Y., “Guidelines for Repair Welding of Pressure Equipment in Refineries and Chemical Plants—Part 6: Material Degradation and Repair Welding,” ASME Paper No. PVP2011-57281.
A Guide to Weld Joining Technology, New Edition, Japan Welding Engineering Society, March 2008.
Katayama, S., Matsuda, F., Nakagawa, H., and Arata, Y., 1978, “Solidification Crack Susceptibility in Weld Metals of Fully Austenitic Stainless Steels (Report 5),” Trans. JWRI, 7.
Hau, J. L., and Molina, C. H., 1992, “Hydrogen Damage Inspection and Examination of H2S Absorber Column,” NACE Corrosion, 92, paper 446.


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Fig. 1

Repair welding guidelines and supporting system

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Fig. 2

Standard work flow of repair welding

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Fig. 3

Selection of repair welding methods

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Fig. 4

Extent of flaw removal external fillet weld patches

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Fig. 5

Welding sequence for insert plates [11]

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Fig. 6

External fillet welded patch method

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Fig. 7

Required size and thickness of patch plate and fillet welds

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Fig. 8

Local PWHT after repair welding at the bottom of gasket groove in manhole flange

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Fig. 9

Microstructure of weld metal and its property estimated from the Schaefller's diagram with chemical composition

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Fig. 10

Effect of P and S on hot cracking susceptibility of austenitic stainless steel [12]

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Fig. 11

Weld heat affected zone cracking in welded joint of radiant tube

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Fig. 12

Effect of solution heat treatment on elongation of material



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