Category: PIPING

API 510, API 570 - PI, OIL & GAS, PIPING2 Comments

What is Hoop Stress in pressure vessel?

Amarine Antonio

Stress in Cylindrical Component 1;  Pressure or pressure within a component that is cylindrical (Cylinder) will cause stress or stress on the component, both the longitudinal stress ( Circumferential stress). Stress in Cylindrical Component 2; Considering the cylindrical Vessel and Pipe, which have the Longitudinal Weld and the Circumferential Weld, we see that the Longitudinal stress is dealt with the Circ. Weld and stresses along the circumference ( circumferential stress) are done with the Long. the Weld. Stress in Cylindrical Component 3;  Normally, the circumferential stress is twice that of the longitudinal stress observed in daily life. We will see that the sausage will always break … Continue reading What is Hoop Stress in pressure vessel?

API 510, API 570 - PI, CORROSION, OIL & GAS, PIPINGLeave a comment

What is Rupture Disc?

Amarine Antonio

Rupture Disk;  Rupture Disk is a pressure relief device that does not close. (Nonreclosing) by releasing the pressure when the Disk breaks ( Burst) at Burst Pressure Rupture Disk is often used together with Pressure Relief Valve (PRV) to prevent corrosion from the process fluid touching PRV. Rupture Disk – Installation;  The Rupture disk installation is directly between the Rupture disk and the PRV. There must be a Vent Pipe or Pressure Gauge to check if the Disk is leaking or cracking. When we remove the disk for inspection or maintenance, the PRV should replace the disk because the Disk … Continue reading What is Rupture Disc?

API 510, API 570 - PI, PIPING1 Comment

What is Built-up Backpressure of PRV?

Amarine Antonio

Continue on: What is Backpressure, Superimposed Backpressure? Built-up Backpressure of PRV;  Built-up back pressure is the pressure that will occur when the pressure relief valve (PRV) opens and the pressure is released. This is because there Head/friction loss (Pressure drop) in the pressure relief system: Example of PRV Backpressure;  Example of Backpressure Calculation of Pressure Relief Valves (PRV) in the system Continue reading What is Built-up Backpressure of PRV?

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

What is Backpressure, Superimposed Backpressure?

Amarine Antonio

Backpressure of PRV;  Backpressure is the pressure on the outlet side of the Pressure Relief Valve (PRV) which will affect the operation. Performance of PRV by Backpressure contains Superimposed backpressure and a Built an up backpressure: Superimposed Backpressure of PRV; Superimposed Backpressure is a static pressure on the outlet side of Pressure Relief Valve (PRV). There are both Constant and Variable. Continue reading What is Backpressure, Superimposed Backpressure?

API 510, API 570 - PI, PIPING1 Comment

What is Balanced Bellow of PRV

Amarine Antonio

Balanced Bellow PRV;  Balanced Bellow Pressure Relief Valve is The Conventional PRV with Bellow for reducing the impact of Backpressure from the Outlet of PRV makes PRV can be turned off as the Set pressure setting. Refer to: What is Backpressure testing of PRV? Refer to: What is Cold Differential Test Pressure (CDTP) on Conventional vs Bellow PRV To use Balance bellow PRV, open a vent hole on the Bonnet to monitor the leak of the Bellow and to reduce the impact of Backpressure on Set pressure in case of Bellow leak: How Balanced Bellow Work; Balanced Bellow is able to eliminate the impact of the Backpressure because the pressure from the Backpressure is applied to both sides of the Bellow and is offset.   Continue reading What is Balanced Bellow of PRV

API 510, API 570 - PI, PIPINGLeave a comment

What is Test Gag of Pressure Relief Valve

Amarine Antonio

Test Gag of Pressure Relief Valve;  Test Gag is a bolt used for the spindle block of the pressure relief valve (PRV) to allow the PRV to be closed during the pressure test. The bolt should be tightened when the system has 80% of the pressure used. test (test pressure) to ensure that the PRV is closed at the test Pressure: Continue reading What is Test Gag of Pressure Relief Valve

API 510, API 570 - PI, PIPINGLeave a comment

Conventional Pressure Relief Valve Component (Intro)

Amarine Antonio

“Conventional” Pressure Relief Valve Component;  Conventional Pressure Relief Valve (PRV) has a duty to protect Vessel not to have the pressure exceeded ( Overpressure) by PRV will open to release pressure from the system when the voltage is greater than the pressure of the spring of PRV for Conventional Spring. -loaded PRV has the following components.   Continue reading Conventional Pressure Relief Valve Component (Intro)

API 570 - PI, PIPINGLeave a comment

Pipe support – Spring Hanger (Notes)

Amarine Antonio

Spring Support; Let’s get to know the different parts of Spring Support Pipe Supports Inspection – Spring Hanger 1;  When checking the piping, don’t forget to check the spring coil damage  Pipe Supports Inspection – Spring Hanger 2;  Check the position of the Spring Hanger to be in the correct position where Cold position = In shutdown and fluid unloaded (Installation load), and Hot position = In operation (Operating load).   Continue reading Pipe support – Spring Hanger (Notes)

API 510, API 570 - PI, CORROSION, PIPING1 Comment

Steam erosion on Flanges (Samples)

Amarine Antonio

Steam Erosion at Flange / Gasket Face (Case Study 1);  Erosion (Erosion-Corrosion) by Steam area Flange / Gasket Face of Tubesheet of Shell and Tube Heat Exchanger, so remember to check the area. Flange / Gasket Face thread. Steam Erosion at Flange / Gasket Face (Case Study 2);  Another Case study of the Steam Erosion at Flange face (Gasket face) of Top Outlet Nozzle of Steam Tower. Continue reading Steam erosion on Flanges (Samples)