Log in

Login to your account

Username *
Password *
Remember Me

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.

Do I Have to Replace My Bulged Pressure Vessel?

Figure1-Bulged_Shape_of_Vessel-cover Need to replace bulged pressure vessel?
There are a variety of conditions an in-service component (e.g. vessel, tank, piping) can be found in.  The purpose of Fitness-for-Service (FFS) is to evaluate the integrity of an in-service component given a certain degraded condition and rate it for future service considering potential for any additional degradation.  A degraded condition does not have to just be based on corrosion. Sometimes a component can experience a large deformation due to unexpected one-time loads resulting in stresses greater than yield.  When such a large deformation event occurs it is important to inspect the vessel to make sure no cracking occurred during the deformation event.  If it is found that the impacted area is defect-free then the next step is to determine if the component can operate in the deformed shape. One example of a non-corrosion related degraded condition is a bulged tank.  Figure 1 shows an example of a tank that bulged...
Continue reading
5
  1301 Hits
  11 Comments
Recent Comments
Charles Becht V

FFS approach

Yes, any degraded condition that goes beyond the tolerances of the original Code of Construction must be demonstrated to meet cert... Read More
Thursday, 11 April 2019 21:14
Trevor Seipp

CSA B51-14 and AB-535

The situation of vessels that have damage is not something that is well covered by the Canadian Codes. CSA B51-14 does not addres... Read More
Friday, 12 April 2019 19:09
Charles Becht V

common approach

By common approach I simply mean pressure vessels are essentially designed identically. In the case of this vessel, an ASME Secti... Read More
Thursday, 11 April 2019 22:25
1301 Hits
11 Comments

Risk-Based Work Selection (RBWS) – Choosing a Software Tool

software-tool-cover Choosing the right software tool for RBWS
Using the right software tool can save time and improve results of Risk Based Work Selection (RBWS) which is a standalone work process aimed at optimizing turnaround (TA) work scopes.  RBWS uses risk assessments to determine if individual worklist items are justified by Health, Safety, & Environmental Risks or Financial Risks.  Significant reductions in turnaround work scopes typically result from this structured work process. Becht Engineering has conducted RBWS sessions using a variety of tools ranging from Excel spreadsheets to our custom-built STRAITS Software.  Some tools have distinct advantages over others, so we wanted to highlight why a specialized tool should be used for RBWS and what are the key features to look for when selecting a tool.  Why is a Specialized Tool Needed? The information necessary to conduct an RBWS should already exist.  The challenge is digging the information out of desk drawers, databases, and excel spreadsheets, and organizing it...
Continue reading
4
  605 Hits
  0 Comments
605 Hits
0 Comments

All That Glitters Is Not Gold - Due Diligence Can Define The True Value

pot_of_gold_rainbow
A few years ago I conducted what might be the world's cheapest, fastest and most cost effective due diligence study ever done. This study took one hour and cost the client about $500.  I was approached by two new members of a well-recognized financial institution. They were assigned to evaluate opportunities to capture low cost natural gas. They had discovered an ammonia plant for sale in an intensely agricultural region in the Midwest-US. Considering feedstock cost, proximity to market and asking price for the plant, they thought this was a gold mine.  Their superiors had some concern about the enormous enthusiasm of these new employees and asked them to evaluate the condition of the asset to determine if it would perform at reasonable rates with acceptable mechanical availability. That is when they reached out to me. A call was scheduled and they explained the situation and “golden” opportunity. They we indeed...
Continue reading
4
  584 Hits
  0 Comments
584 Hits
0 Comments

Fatal Distractions: Refinery Chloride Contamination – Are You Looking for the Source of Chlorides in the Right Place?

L1011-aircraft Eastern Airlines L1011 Aircraft
On December 29, 1972 one the Nation’s worst airline accidents occurred as Eastern Air Lines Flight 401 crashed into the Florida Everglades killing 101 of the passengers and crew.   A National Transportation Safety Board (NTSB) investigation attributed the cause of the crash to crew distraction.  While on approach, the crew noted that a landing gear indicator light was not functioning.  While the entire crew was preoccupied with troubleshooting the burnt-out landing gear indicator light, they failed to notice that the autopilot had inadvertently been disconnected and, as a result, the aircraft gradually lost altitude and ultimately crashed. All too often when attempting to solve a problem we suffer from tunnel vision.    A probable root cause to the problem is suggested and we spend all of energy and resources attempting to fix the suggested root cause while ignoring the indications that the actual root cause is something else or that more...
Continue reading
5
  1187 Hits
  0 Comments
1187 Hits
0 Comments