CSWIP 3.1: Question with Answer and Explanation – Part 19

1) One of the following alloys is non-magnetic. Which? 4% Chromium Molybdenum 12% Chromium Austenitic Stainless Steel  (answer) 9% Nickle Steel 2) When TIG welding Austenitic Stainless Steel pipe, Argon gas baking is called for. This is to: Prevent oxidation ( answer ) Prevent under bead cracking Prevent porosity Control the penetration bead shape 3) The principal … Continue reading CSWIP 3.1: Question with Answer and Explanation – Part 19

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CSWIP 3.1: Question with Answer and Explanation – Part 18

1) During post weld heat treatment what is the sequence for the PWHT chart? a. Restricted heating rate, soak time, unrestricted cooling rate b. ( answer ) Unrestricted heating rate, restricted heating rate, soak time, restricted cooling rate, unrestricted cooling rate c. Unrestricted heating rate, soak time, restricted cooling rate d. Restricted heating rate, unrestricted heating … Continue reading CSWIP 3.1: Question with Answer and Explanation – Part 18

HULL SURVEY – PIPING OUTFIT (PART 4)

Continuing from this chapter, we will go in further detail to Scupper & Sanitary pipe. These from the piping system which discharges scupper or sanitary water directly overboard or into bilge well/tanks. Weather deck scuppers Example of deck scupper for ships with square and round gunnels is as shown below : Scuppers from cargo spaces and … Continue reading HULL SURVEY – PIPING OUTFIT (PART 4)

HULL SURVEY – PIPING OUTFIT (PART 3)

Continuing from this chapter, we will go in further detail to Sounding pipe Sounding pipe Sounding means the measurement of depth. Today, many more advanced liquid level indicators are on the market but old fashioned sounding lines are still common in tanks because of their simplicity and reliability. Requirement of sounding system All tanks, cofferdams, cargo … Continue reading HULL SURVEY – PIPING OUTFIT (PART 3)