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Guo J.,Dalian Hitachi Machinery and Equipment Co. | Gu M.,Dalian Baoyuan Nuclear Equipment Co.
Petrochemical Equipment | Year: 2010

Some new understandings about welding procedure qualification, obtaining through reading ASME Code, Section IX in conjunction with code product construction are introduced. U-sing these understandings in the practice of preparation and qualification of WPS would result in largely expanding the applicable range of a qualified WPS, and hence the minimizing the work burden of welding engineers, as well as optimizing the welding technical documentation. These ideas have been applied in the practice. Source


Guo J.,Dalian Hitachi Machinery and Equipment Co. | Shi X.-F.,Dalian Hitachi Machinery and Equipment Co. | Li Y.,Dalian Hitachi Machinery and Equipment Co.
Petrochemical Equipment | Year: 2010

It was found that the materials actually selected for the equipment hatches on two nuclear power plants with similar atmosphere condition on their sitting locations, but constructed to different code have remarkable differences in property, especially toughness level. It's quite likely that the equipment hatches constructed in accordance with the ASME Code have much more safety margin, in contrast with those designed to RCC-M. Source


Ma L.-L.,Dalian Hitachi Machinery and Equipment Co. | Wang P.-A.,Dalian Hitachi Machinery and Equipment Co. | Zhang L.,Dalian Hitachi Machinery and Equipment Co. | Guo J.,Dalian Hitachi Machinery and Equipment Co.
Petrochemical Equipment | Year: 2012

To understand how the ASME Code controls of the expressed precision of the quantity in U. S Customary Unit and in SI Unit, the data rounding rules dominantly used worldwide was introduced firstly, and the temperature conversion to and for these two measurement unit systems were discussed. This paper may be referred in the conversion of other quantities. Source


Li Y.,Dalian Hitachi Machinery and Equipment Co. | Zhang L.,Dalian Hitachi Machinery and Equipment Co. | Feng A.-X.,Dalian Hitachi Machinery and Equipment Co. | Guo J.,Dalian Hitachi Machinery and Equipment Co.
Petrochemical Equipment | Year: 2013

It could be found that the product qualification and the shop qualification required in RCC-M is referred to material intended for mechanical components of nuclear island in nuclear power plants, and their suppliers respectively, but not to nuclear components and their manufacturers and/or field assembly companies. And the qualification methodology adopted still stayed on the earlier stage of quality inspection, but not on modern quality assurance stage, and hence draggled behind ASME Code substantially. Source


Guo J.,Dalian Hitachi Machinery and Equipment Co. | Yan L.I.,Dalian Hitachi Machinery and Equipment Co. | Shi X.-F.,Dalian Hitachi Machinery and Equipment Co.
Petrochemical Equipment | Year: 2010

Some basic principles about preparation, qualification and application of the welding procedure specifications (WPS) have been presented in the reference [1]. As a continuation of the reference [1], a clarification for some problems in these respects predominated in the welding engineers in our country which remarkably interferes with the understanding of the code and the technical advance was proposed in detail. Source

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