Gate valve testing and maintenance
1- Purpose of using Gate Valve on stream Gate Valve is used to open and close the flow only. Not commonly used in flow control with the following components. 2- Operation (open-closed) of Gate Valve 3- The Hydrostatic Test for Gate Valve requires 3 parts, Shell, Seat, and Backseat The hydro-testing according to API 598. The valve standard is ASME B16.34 ***Gate Valve – Hydrotest Backseat; The Hydrostatic Backseat Test must be tested at a pressure of not less than 1.1 times the Maximum Operating Pressure by fully opening the valve and releasing the gland of the gate valve to check for leaks through the Backseat. ***Gate Valve – Hydrotest Shell; Hydrostatic Shell Test must be tested at a pressure … Continue reading Gate valve testing and maintenance
Erosion in Refinery, Petrochemical Plant
Case I: Erosion in Pipeline Branch of line Medium pressure (MP) steam is separated to Steam trap occurs near Elbow ( the Elbow) at the point of impact of the Flow by Steam flow in Line that runs Steam trap that resembles a Two-phase. Case II: Erosion at the opposite tee fitting of the Low-pressure (LP) steam condensate pipe is caused by the two-phase flow (Flash steam + Liquid condensate) from the pipes that condensate from the steam trap that is combined. Case III: When Liquid Condensate runs through the Control valve, some are turning to Flash steam becomes Two-phase flow and flow turbulence ( Turbulent) resulted from Erosion , especially at the point of impact on the joints of the various (Elbow, Tee). Continue reading Erosion in Refinery, Petrochemical Plant
Cyclone Separator in Refinery, Petro Chemical Plan
Cyclone Separator; Cyclone separator uses the incoming flow of rotation and gravity to separate dust or particles from the gas/liquid stream or to separate the spray of water mixed with the gas stream. Continue reading Cyclone Separator in Refinery, Petro Chemical Plan
Design Pressure Vs MAWP (API, ASME)
On the drawing Pdesign: 16kg/cm2 and MAWP: 26 kg/cm2 User defines Pd: as above. t calculated: 4mm T selected: 12mm and second trial for formula founded P: 26 kg/cm2. Then designer says it is MAWP and equals to 26, which … Continue reading Design Pressure Vs MAWP (API, ASME)
Pressure Safety Valve Calibration, Maintenance
A Simple Pressure Safety Valve Calibration Procedure One of the simplest but most important instruments that I encounter which are used not for displaying or monitoring the process, but for safety, it is the pressure safety valves. When I was just starting out as a cal tech, looking at it installed in a tank makes me curious about its usage. You cannot see any actions or output display as a sign of its operation. In this post, I will present the following: What is a safety valve? Its difference with a relief valve Why do we need to calibrate a … Continue reading Pressure Safety Valve Calibration, Maintenance
PRV setting guides
Today I want to talk about steam safety valves: sizing, selection, installation, best practices. Steam safety valves installed wherever the maximum allowable working steam pressure of a system or over pressurizing a containing vessel is likely to be exceeded. In … Continue reading PRV setting guides
PR Valve Seat flatness with 3 light bands
To prevent leakage of the loading fluid, an optical precision on the order of three light beads/bands [0.0000348 in. (0.0008838 mm)] must be maintained in the flatness of seating surfaces on metal-seated pressure relief valves (see API 527). Imperfections in … Continue reading PR Valve Seat flatness with 3 light bands
What is Load test Safety Factor and Proof Test for Lifting devices?
What is the safe working load (SWL)? Safe Working Load (SWL) is the limiting safety factor to lift and carry any load safely. It must be clearly marked on any lifting device (hoist, lifts, lifting machines, and lifting tackles). Marking System of Safe Working Load Lifting equipment should have a tally plate indicating the Safe Working Load. The tally plate also indicates the identification number which can be mentioned in the test certificate held by the user. It should also indicate the date of the last inspection. Safe Working Load ( Or WLL) of different types of sling are given in … Continue reading What is Load test Safety Factor and Proof Test for Lifting devices?
Where is calibration mentioned in ISO 9001-2015
The ISO 9001 is a quality management system defined by a set of specific standards that helps businesses run as smoothly as possible. One of the clauses under this system, Monitoring and Measuring Resources, refers to the requirements of conformity that are set for all products and services. What is monitoring and measuring resources for ISO 9001? The process of monitoring and measuring resources for ISO 9001 includes making sure that all equipment is valid, up to date, and working properly. All measurements that are taken must be accurate and recorded for monitoring purposes. Monitoring and measuring resources, as outlined … Continue reading Where is calibration mentioned in ISO 9001-2015
AMARINE 