Becht Engineering Blog

In this section of the site contributing authors submit interesting articles relating to the various services, industries and research & development efforts of Becht Engineering.

Becht Engineering has significant consulting expertise with improving reliability for chemical plants and refineries as well as upstream projects for oil and gas production. This multi-disciplinary task involves the clients’ representatives (operations, maintenance, inspection and engineering) together with Becht Engineering corrosion,...

Becht Engineering has significant consulting expertise with improving reliability for chemical plants and refineries as well as upstream projects for oil and gas production. This multi-disciplinary task involves the clients’ representatives (operations, maintenance, inspection and engineering) together with Becht Engineering corrosion, mechanical integrity and reliability experts.

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Fired Heater Risk Ranking - Owners Can Mitigate Risks Of Operation

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...by Eileen Chant and Abby King Fired heaters are critical equipment items in the process industries and are often overlooked since they don’t fit nicely into a single category of equipment or existing programs in the same way a pump or pressure vessel does. Safe and reliable operation is essential to avoiding adverse health, safety, and environmental consequences. Poor heater conditions and plant practices can increase the risk of a loss of containment (LOC) event, potentially resulting in fire and/or explosion. This can also increase the likelihood of plant personnel being exposed to hazardous situations when starting and operating the heater, or when responding to emergencies. Plants should look for opportunities for improved operations, inspections and maintenance to mitigate the risks associated with the operation of fired heaters. The risk-based approach described is used to identify potential threats to health and safety during operation by assigning a risk to each identified...
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Abby King

Designer/Manufacturer

Ken, Thanks for reading and leaving a comment! We agree that the original design and as-built documentation is an important data... Read More
Thursday, 22 August 2019 16:31
Abby King

Operations input is vital!

Steve, Thanks for the feedback on the article and leaving a comment! We have had similar experience as yourself. The only way t... Read More
Thursday, 22 August 2019 16:49
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Cooling Towers: Benefits of a Cold Eyes Review

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One key decision that often needs to be made is repair vs. replace. When has a cooling tower arrived at the point where a new tower should be considered? Maintenance costs, overall tower condition, environmental constraints, and performance optimization are all factors that need to be evaluated. If a new cooling tower is justified, how are the specifications for performance selected? What range, fan horsepower, approach to wet bulb, and water flow rate should be specified to best match plant requirements? The range is the difference between the hot water (return) temperature and the cold water (supply) temperature. The approach to wet bulb is due to the fact that, if the cooling tower were infinite in size, the cold water temperature would be at the wet bulb temperature. However, just like a shell and tube heat exchanger with a temperature difference between two streams, a finite cooling tower results in some...
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Acceptable Practices for High Voltage Motor Lead Routing

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Are Your Wires Crossed?   By Rick Hoffman and Joe Rammage We recently evaluated a 15kV, 5000 hp, induction motor in a WPII enclosure manufactured by a foreign company.  During an on-site inspection of the main terminal box it was discovered that the high voltage leads were touching.  This raised significant concerns about the long-term reliability of the motor. Becht Engineering investigated the issue to determine the industry standards and best practices concerning routing of the motor high voltage leads.    Shielded vs Non-Shielded Cables The National Electric Code requires all cables rated above 2.4kV to be shielded to prevent concentrated electromagnetic stresses from forming between the cable conductor and ground when the cable is in close proximity to a grounded surface.  The addition of the metallic shield smooths out the electromagnetic field eliminating high stress points.  Without it, the increased density of electromagnetic stresses where the cable is in close...
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Basics of Design By Analysis in ASME Section VIII, Division 2

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How hard can it be?  I’ve heard from several (unnamed) analysts that because they have access to an FEA program and have successfully applied FEA in other fields, that FEA for pressure vessels should be a snap.  What is it about FEA for pressure vessels that makes it unique? I was recently discussing with another blogger regarding some distinctive aspects of performing Design By Analysis for pressure vessels.  We generated several questions, and so I decided to post this in a Question & Answer format. When do I have to use FEA in my pressure vessel design? The short answer here is that for most situations, you probably should not be using FEA to design your pressure vessel.  The rules for designing pressure vessels in ASME Section VIII, Division 1 and ASME Section VIII, Division 2 have a long history of successful application.  So, wherever possible, I would recommend that you...
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