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Facts At Your Fingertips

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November Letters Facts at Your Fingertips: Forces Acting on a Gasket

This letter is in reference to the article, Forces Acting on a Gasket [ Chem. Eng. October, 2014, p. 32a]. I need to clear my understanding on the seating stress required for the proper sealing. As per the article, seating…

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Wire Meshes in Filtration

Fabricated metal-wire mesh is one of the major categories of filter media. Woven metal cloths are often used to support a filter aid coating or a bed of granular or porous material. Proper selection of wire cloth can have a…

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Forces Acting on a Gasket

Gaskets are relatively simple pieces of equipment in principle, yet are entirely critical in many types of chemical process industries (CPI) applications, including pipes and vessels. An understanding of gasket function, and of the forces and stresses acting on gaskets…

Safe Sampling of Heat-Transfer Fluids

Collecting representative samples of heat-transfer fluid for routine quality checks falls short of the goal if safety or the environment is compromised. While users should consider their systems’ unique design features in consultation with their safety and health experts, incorporating…

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Activated Carbon

Sorbent materials are used commercially for bulk separation, as well as purification of both liquids and gases. This one-page reference provides manufacturing and application information on the most widely used industrial sorbent material — activated carbon. Four types of generic…

Liquefied-Industrial-Gas Safety

Many industrial gases are transported, stored and used in liquid form, a situation that poses significant health and safety risks. This one-page reference highlights good safety practices for preventing personnel injury when working with cryogenic fluids. High-purity industrial gases, including…

Construction-Cost Indices

Cost estimation is a critical dimension of project planning in asset-heavy industries such as the chemical process industries (CPI). Construction cost indices are useful tools in cost estimation and are used to compare plant construction costs from one time period…

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Centrifugal Pump Maintenance

Optimal functioning of centrifugal pumps over time depends on sound maintenance practices. The following material represents tips and guidelines for routine preventive and protective maintenance for centrifugal pumps. Monitoring A basic maintenance routine for centrifugal pumps should include monitoring of…

Static Electricity Discharge and Fire Prevention

When flammable or combustible atmospheres are present, uncontrolled discharges of static electricity are potentially dangerous or even catastrophic. A significant portion of industrial explosions and fires are attributable to static electricity each year. In theory, controlling static electricity by grounding…

Level-Measurement Device Selection

Effective level measurement in the chemical process industries (CPI) helps maintain material inventory at economic quantities, improves product quality and maximizes plant output by avoiding spills and process upsets. When they are incorrectly matched to their application, level-measurement devices can…