Category: PIPING

API 510, API Inspector, OIL & GAS, PIPING2 Comments

What is Fillet Welded Patch on pressure vessel.

Amarine Antonio

Repair of Pressure Vessel – Fillet Welded Patch;  Fillet Welded Patch can be used to repair Pressure Vessel temporary (Temporary repair) by the Patch Plate cover the areas that have been damaged and welded to the Vessel by Fillet Weld This method applies to damage caused by Corrosion or. Erosion which will cause the Vessel ‘s walls to become thinner ( Local Wall Thinning). Repair of Pressure Vessel – Fillet Welded Patch Example 1 (Local Thin Area); Example of repair with a Fillet Welded Patch with a local thin area: Repair of Pressure Vessel – Fillet Welded Patch Example 2 (Through-wall … Continue reading What is Fillet Welded Patch on pressure vessel.

OIL & GAS, PIPING, SHIP SURVEYLeave a comment

Pipe support shoe (sliding type) – inspection

Amarine Antonio

Pipe Supports Inspection – Pipe Shoe off Support;  When checking piping, be sure to check the position of Pipe Shoes to see if they are still in the right position or if they fall out of support like below: Pipe Supports Inspection – Fix Pipe Shoes off Support;  In the event that the pipe shoe is dropped from the support, it can be resolved by expanding the support structure to support the thermal expansion. Continue reading Pipe support shoe (sliding type) – inspection

API 570 - PI, API Inspector, OIL & GAS, PIPINGLeave a comment

How to inspect steam trap on piping system

Amarine Antonio

Steam Trap Inspection – Visual and Sound Summary for relieve open system; To check the Steam Trap, an Open System by observing ( the Visual ) function and sound ( A Sound) to indicate a malfunction of Steam Trap or not. Steam Trap Inspection – Visual;  Visual inspection of the steam trap is by looking at the external conditions to see if the steam trap has leaks at various points or not. Second, observe the behavior of the steam trap, which can indicate problems with the steam trap , such as lack of ventilation. Condensate water , large amounts of steam flow out of the steam trap, while the steam trap is closed, live steam ejects, etc Steam Trap Inspection – Overview; Monitoring Steam Trap to determine … Continue reading How to inspect steam trap on piping system

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Steam Trap – Bimetallic type

Amarine Antonio

Steam Trap – Bimetallic;  The Bimetallic Steam Trap uses the Thermostatic principle of the unequal expansion of two metals (Bimetallic) at high temperatures to open and close the Condensate drain valve . When high-temperature Steam comes in, the Bimetal disk will heat and bend. Causes the stem to move upwards to close the valve, but if condensate water gets trapped in a steam trap , the condensate ‘s water temperature will gradually decrease until the Bimetal disk comes back straight and causes the stem to slide down to open Valve. Continue reading Steam Trap – Bimetallic type

API 510, API 570 - PI, API Inspector, OIL & GAS, PIPING3 Comments

Pressure Level Relationships chart

Amarine Antonio

PRV – Pressure Level Relationships;  The relationship between the pressure levels of the Pressure Relief Valves (PRVs) on the left side and the pressure on the right side of the system. See What is Set pressure: What is Cold Differential Test Pressure (CDTP) See What is Set pressure/ Accumulation Pressure: What is accumulation pressure of PRV, PSV? See What is MAWP: What is MAWP of pressure vessel (ASME VIII) See What is Popping test: What is PRV pop test? (Popping test) See What is Blowdown: What is PRV blowdown? See What is Simmer phenomena: What is simmer of valve (PRV/PSV)? See What is MAWP: What is … Continue reading Pressure Level Relationships chart

API 510, API Inspector, OIL & GAS, PIPING, PRV PSV4 Comments

What is PRV Seat leakage (tightness) test?

Amarine Antonio

PRV Testing – Seat Tightness Test (Leakage Test);  Seat Tightness Test or Leakage Test is a leak test between Seat and Disc of Pressure Relief Valves (PRV) which will be done after Pop test by maintaining PRV ‘s Inlet pressure at 90% of Set Pressure and counting bubbles. Caused by air or nitrogen leak through Seat and Disc come out. PRV Testing – Example of Seat Tightness Test (Leakage Test);  An example of setting up equipment for the Seat Tightness Test or Leakage Test of Pressure Relief Valves (PRV) PRV Testing – Acceptance Criteria for Seat Tightness Test (Leakage Test);  In … Continue reading What is PRV Seat leakage (tightness) test?

API 510, API 570 - PI, OIL & GAS, PIPING4 Comments

What is Cold Differential Test Pressure (CDTP)

Amarine Antonio

PRV – Cold Differential Test Pressure;  The Cold Differential Test Pressure (CDTP) of the Pressure Relief Valve (PRV) is a set pressure that is adjusted to be used for the PRV (Bench Testing). Because in actual use conditions, the PRV may be affected by the Backpressure. And the operating temperature. Therefore, when testing at room temperature and without backpressure, it is necessary to adjust the set pressure to compensate for these factors. In other words, the shop test pressure = CDTP. PRV – Cold Differential Test Pressure (Example 1);  An example of a Cold Differential Test Pressure (CDTP) with a backpressure (superimposed) effect. In this case, CDTP is equal to Set Pressure minus Backpressure. Refer to: What … Continue reading What is Cold Differential Test Pressure (CDTP)