بررسی الزامات انجام تست رادیوگرافی (RT) در فاز طراحی Thermal مبدل های حرارتی

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مساله رادیو گرلقی عمدتا در بخش ساخت و جوشکاری مبدل مهم و تاثیر گذار میباشد البته گاهی سرویس سیال قرآیندی دیکته کننده نوع رادیو گرافی میباشد .مثلا در سیالهای TOXIC/SOUR SERVICE رادیو گرافی را بصورت قول درنظر میگیرند این موضوع ختما در SPEC پروزه یا دیتا شیت باید ذکر گردد .

از نظر قرآیندی فقط اگز گزینه FULL RT انتخاب شود طول کلی مبدل (OVERAL LRNGTH) بدلیل انتخاب HUB BODY FLANGE میتواند بزرگتر گردد

Specifies nondestructive method to inspect materials for hidden flaws using short X-rays

and Gamma rays to penetrate the materials. Radiography is used to test and grade welds on pressure vessels, such as heat exchangers.

- None – No radiography testing

- Spot – [Spot radiography testing ](javascript:void(0);)Radiograph a specified length of the welds at particular spots along the welds, particularly at critical spots like junctions. Refer to the ASME code (Section VIII, Division 1) to know the required length and spots that must be radiographed.

- Full – [Full radiography testing ](javascript:void(0);)Full radiography has a higher coverage than spot radiography testing, but in some situations may not require that the entire length of the weld be radiographed. Refer to the ASME code (Section VIII, Division 1), which defines how and when Full Radiography testing must be applied.

- 100% - [Entire length of all welds ](javascript:void(0);)Critical vessels that involve high pressures or contain toxic or corrosive materials might be expected to undergo this extensive radiography testing.

Required:
No

Units:
None

Default:
None