Variable Spring Hanger: A variable spring hanger is a type of support used for piping systems. It is designed to allow for thermal expansion and contraction of the piping without causing damage. The variable spring hanger consists of a spring that is mounted between two flanges. The spring is designed to compress and expand as … Read more
Stainless steel pipe is a sort of line produced using tempered steel, a metal that doesn’t rust and has something like 10.5% chromium in it. This high chromium content makes an oxide layer on the surface of the steel that protects it from rust and corrosion. This makes it perfect for many uses where durability … Read more
H2S corrosion:- The presence of H2S corrosion may give rise to three principal types of cracking in steels. These are sulphide stress cracking (SSC) and stress corrosion cracking (SCC), which result from the joint action of corrosion and tensile stress (residual or applied) in the presence of water and H2S corrosion may occur in carbon … Read more
Isolation Philosophy describes methods for isolating sections of plant to permit safe operation, and provide access for maintenance or inspection. The methods described here are applicable for all hazardous and non-hazardous process and utility systems. Provision shall be made to isolate all equipment, either separately or commonly, within a process or non-hydrocarbon system. Maintenance isolation … Read more
Emergency shut down valve (ESD) valves are required to contain and protect sections of a plant in the event of an emergency such as a fire. Standard types of valve intended for ESD service must achieve the highest degree of functional reliability and pressure boundary integrity and may be affected by legislation in some countries. … Read more
A scrapper tee, also known as a flow tee or barred tee, is a type of pipe fitting that is used to ensure the safe passage of pipeline pigs across branch connections. A pig is a tool that is inserted into a pipeline to clean, inspect, or modify the pipeline. The scrapper tee has a … Read more
Duplex Stainless Steel Type Duplex stainless steel DSS is divided into two sub-families, DSS (22%Cr) and SDSS (25%Cr). SDSS has better corrosion resistance and may also be used for seawater service. SDSS may be preferred to DSS also for its higher strength, resulting in reduced wall thickness, which may be of interest and even necessary for … Read more
Piping engineer interview questions For piping engineer interview questions (material Engg) Below are the basic questions asked in piping engineer interview questions 1.Can you explain in detail three or more major differences between code ANSI B31.1 and code ANSIB31.3? Answer: There is only one major difference between the two, B31.1 is for Power Piping, and … Read more
Copper-Nickel Material All copper-nickel piping as a minimum shall be supplied in 16-bar system. Velocity in Cu-Ni piping shall not exceed 1.6 m/sec for 2″ NB and below and 3.3 m/sec. for 3″ NB and above. Fluid velocities in copper piping shall not exceed 1.5 m/sec. Design of Cu-Ni piping system shall be such as … Read more
Chlorinated Poly Vinyl Chloride CPVC has become an important engineering thermoplastic due to its relatively low cost, high heat deflection temperature, chemical inertness and outstanding mechanical, dielectric, and flame and smoke properties. At basic level, CPVC is a PVC homopolymer that has been subjected to a chlorination reaction. One of the most attractive features of … Read more