Piping

Corrosion: Address damage caused by galvanic corrosion

Anwer, A., Qureshi, N., Contributing Writer

At petrochemical and refining facilities, it is common for U-clamps over piping runs to become corroded, sometimes to the extent where they are completely thinned out.

High-frequency acoustic excitation—Part 1

Datta, A. K., Process Consultant

Failure of a piping section at the outlet of pressure safety valves (PSVs) and control valves—where significant differential pressure exists (particularly in gas processing industries)—is a common problem in industries.

Stress qualifications for standard and nonstandard valves in piping systems

Various types of valves are used in refineries, petrochemical plants, fertilizer plants and utilities.

Engineering Case Histories: Case 110: A checklist for vibration analysis

Sofronas, A., Consulting Engineer

Periodically, I receive questions from engineers around the world on why a piece of critical machinery is vibrating excessively.

Safety: Addressing corrosion at petrochemical plants starts with carbon

Dalton, B., Thermo Fisher Scientific

Maintaining the structural integrity of a pipeline is a significant investment of time and resources for organizations in the oil and gas industry.

Mitigate transient/hydraulic surge in liquid pipelines with nozzle check valves

Khiani, G. N., GAPV Inc.

Liquid pipelines often come across hydraulic transients, which can damage pipelines and associated equipment (i.e., pumps, valves, stations, etc.).

Supply Chain: How to reduce piping inventory

Abid, J., Consulting Engineer

Piping represents a significant part of the plant cost, ranging from 15%–25%.1 Materials stored in warehouses or storage facilities cost companies in terms of personnel, materials, time, space, insurance, risk, etc. This article proposes cost-saving strategies for inventory reduction. Further, it emphasizes consistent naming conventions to avoid creating duplicate/redundant items.

Piping and instrument diagrams (P&IDs): Part 2—Causes and management of change

Shah B., Process Engineering Consultant

It is difficult to categorize or group the many reasons for routine or late changes to a P&ID. Some causes are listed here.

Causes of reduced or stopped flow in controlled-volume pumps

Controlled-volume (CV) pumps, also known as metering or dosing pumps, are designed to deliver a small quantity of fluid at a precise rate with relatively high pressure.

Refinery tower inspections: Discovering problems and preventing malfunctions

Cardoso, R., Phillips 66; Kister H. Z., Fluor Corp.

A previous survey identified installation mishaps to be one of the top five causes of tower malfunctions.