News & Insights

The Becht Blog

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

News & Blog

Correcting Splitline Leaks on Dresser-Rand M-Line Compressors

Two compressors at a Refinery in Texas were up-rated to bushing type dry gas seals to eliminate the historical H2S leakage to the environment. The existing seals in both of these machines were the original Clark floating bushing oil seals. There were concerns that the leakage path may be around the outside of the seals […]

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Very Unusual Motor Vibration Issue Resolved with Innovative Vibration Analysis & Solution

Background and The Problem 24 new 3600 RPM, 440 volt AC induction motors were replaced at a large refinery as a result of flooding during hurricane Ike. The motors were inundated by 6 ft to 12 ft of floodwater. The new motors were from three of the major industrial motor manufacturers. Horsepower ratings ranged from […]

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Changes In the 2012 Edition of ASME B31.3

In addition to the many clarifications, updated references to codes and standards, updates to basic allowable stresses, and added listed materials, there are several substantive changes to the 2012 Edition of ASME B31.3, Process Piping. These changes are: Category D Fluid Service The definition was revised to include piping with design minimum temperatures below -29⁰C […]

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Demister Pads—A simple device until they don’t work

A demister pad is similar to an air filter except instead of removing dust particles from a stream of air for example, it removes micron-size liquid particles from a liquid/vapor stream often found in many industrial processes. An air filter prevents dust particles from entering downstream equipment; similarly a demister prevents liquid droplets from entering […]

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Piping Vibration Screening Rule

It is useful to have a screening rule for evaluation of piping vibration in order to determine if the vibration is potentially harmful (can lead to damage or fatigue failure) or if it is simply a nuisance and can be accepted without doing a more detailed assessment or anything to mitigate it. A very useful […]

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Training and Qualification of Bolted Joint Assembly Personnel

For quite some time now, Section VIII Division 1 of the ASME Boiler & Pressure Vessel Code has included the following provision in Appendix 2-15: 2-15 QUALIFICATION OF ASSEMBLY PROCEDURES AND ASSEMBLERS It is recommended that flange joints designed to this Appendix be assembled by qualified procedures and by qualified assemblers. ASME PCC-1 may be […]

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Pump Trips and Check Valve Closure

Pump Trips and Check Valve Closure Systems running multiple pumps in parallel can undergo serious equipment and piping damage during a pump trip caused by a power outage or pump mechanical failure. Uncontrolled reverse flow in the system can occur and if improperly selected check valves are used it can result in pumps running backwards […]

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A Lift Plan for Every Lift

Ten Questions That Must Be Answered Before Attempting Any Lift When attempting any lift, regardless of how small or seemingly insignificant, there is some basic information that must be known and confirmed before you begin. As an industry, we do a great job planning critical and super lifts.  These major lifts are executed with precision […]

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Becht engineers, in collaboration with owner/operator personnel, recently completed a successful Risk-Based Inspection (RBI) Assessment and a Turnaround Risk Based Work Selection (TA/RBWS) Assessment

A team of Becht engineers, in collaboration with owner/operator personnel, recently completed a successful Risk-Based Inspection (RBI) Assessment and a Turnaround Risk Based Work Selection (TA/RBWS) Assessment for a major complex refinery in the Gulf Coast. These assessments enabled the refinery to closely evaluate a very ambitious work scope for an upcoming turnaround and resulted […]

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