API 510, API 570 - PI, API Inspector, OIL & GAS, PIPING, PRV PSVLeave a comment

What is PRV Set Pressure Tolerance

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PRV – Set Pressure Tolerances per ASME Section I;  Pressure Relief Valve (PRV) is designed to be opened to release pressure (Relief Overpressure) at Set Pressure is set, which follows the Requirement of ASME Section I Power Boiler to Pressure Relief Valve (PRV) is a deviation ( of Tolerance) of Opening. Pressure from Set Pressure not exceeding the value in the table divided by Set Pressure of the PRV. Refer to: What is PRV pop test? (Popping test) Beside this term, there’s Blowdown and Overpressure Tolerance for PRV testing: Refer to: What is PRV blowdown? Continue reading What is PRV Set Pressure Tolerance

API 510, BASIC THEORIES, ELECTRIC, OIL & GAS, PIPING, SHIP SURVEYLeave a comment

What is Holiday Test ?

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Holiday Test – Overview;  A holiday test here refers to defects in coating or lining, which are Pinhole, Void, Crack, Thin Spot or Contaminant.  Holiday Test is a method for checking these defects by providing electricity through the defects in Coating/lining to Workpiece. If any area has a defect, spark or short circuit will occur. Holiday Test will be divided into two(2) main methods. According to the thickness of Coating/lining by Low Voltage or “Wet Sponge” It applies to Coat thickness less than 500 microns of High Voltage or “Spark” is used to Coating thickness greater than 500 microns. Example of understanding the methods: … Continue reading What is Holiday Test ?

API 510, API Inspector, CORROSION, OIL & GASLeave a comment

Typical location of CUI corrosion on Pressure Vessel and Storage Tank

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Likely Location of CUI for Vessels – Bottom of Horizontal Vessel;  The risk area for the Corrosion Under Insulation (CUI) for the Pressure Vessel, which is horizontal (Horizontal) is the bottom (Bottom) of the Vessel, which is where water will be trapped under the Insulation. CUI on Insulation Support Ring of Vertical Vessel and the Design for Minimize CUI; In an example of the result is corrosion An Under Insulation (CUI) Downtown Insulation Support Ring Of Vertical Vessel , especially the Support Ring in the zone below. When water is added to the Insulation of water to flow down by gravity. And imprisoned in the Insulation Support Ring makes the atmosphere remove this happen CUI violence. The design method to reduce … Continue reading Typical location of CUI corrosion on Pressure Vessel and Storage Tank

API 510, API Inspector, CORROSION, OIL & GAS, PIPING1 Comment

Typical location of CUI corrosion in piping system

Amarine Antonio

Likely Location of CUI for Piping – Penetration or Breach in the jacket (Vents);  The Line Vents area of Carbon Steel Piping is one area that has a higher chance of CUI being stronger than other areas. Because this area will have the joints of the Insulation Jackets at the top (Top) of the pipes, which water will be able to penetrate easily if the Seal of the Insulation Jackets begin to deteriorate. Design of Termination of Insulation for CUI Protection (Piping);  The design and method of insulation is very important in preventing water, which causes Corrosion Under Insulation (CUI) to not go … Continue reading Typical location of CUI corrosion in piping system