Sun Petrochemicals QA/QC Manager Interview Questions and Answers

To check the verticality of a column, use a plumb bob or laser level. Acceptance criteria: deviation within a specified tolerance.

• Use a plumb bob or laser level to check if the column is perfectly vertical.

• Ensure the plumb bob or laser level is aligned with the centerline of the column.

• Measure the deviation from the vertical position and compare it to the specified tolerance.

• Acceptance criteria may vary depending on th

The electrode used for A36 steel is typically E7018.

• E7018 electrode is commonly used for welding A36 steel due to its high tensile strength and excellent weldability.

• It provides good penetration and produces strong, clean welds.

• Other suitable electrodes for A36 steel include E6010, E6011, and E6013.

• The choice of electrode depends on the specific welding requirements and conditions.

The salt content on the blasted surface in onshore areas is determined through testing and analysis.

• Salt content on the blasted surface can be measured using various methods such as conductivity meters, chloride ion tests, or salt spray tests.

• The salt content is usually expressed in terms of parts per million (ppm) or milligrams per square meter (mg/m²).

• High salt content on the blasted surface can lead to corrosion and...read more