[MW:21911] API 571 Exams

Dear Sirs,

I am on board to start preparation of API 571 and needs suggestions on this to how I can initiate the studies and what are the main things I need to focus?

In addition to this, is any body have course materials on the same? Would appreciate if some body share it with me.

Thank you

Kind regards

Hussain

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Heat tint (temper) colours on stainless steel surfaces heated in air // Heat tint

Introduction The colour formed when stainless steel is heated, either in a furnace application or in the heat affected zone of welds, is dependent on several factors that are related to the oxidation resistance of the steel. The heat tint or temper colour formed is caused by the progressive thickening of the surface oxide layer and so, as temperature is increased, the colours change. Oxidation resistance of stainless steels However, there are several factors that affect the degree of colour change and so there is no a single table of colour and temperature that represents all cases. The colours formed can only be used as an indication of the temperature to which the steel has been heated. Factors affecting the heat tint colours formed Steel composition The chromium content is the most important single factor affecting oxidation resistance. The higher the chromium, the more heat resistant the steel and so the development of the heat tint colou...

[MW:5202] RE: 5200] NDT after PWHT

------------------------------------- Interpretation: I‑89‑14 Subject: Section I (1986 Edition, 1987 Addenda), PW‑11, NDE Prior to PWHT Date Issued: December 15, 1988 File: BC88‑393 Question: Does PW‑11 require that NDE be performed on welds after they have been subjected to the postweld heat treatment required by PW‑39? Reply: No, unless the conditions described in PW‑11.2.2 exist. ---------------------------------------------- Interpretation: VIII-1-98-09 Subject: Section VIII, Division 1 (1995 Edition, 1996 Addenda); NDE ...

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Materials & Welding

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