Fitness For Service – Local Metal Loss Level 1 Assessment. Part 3 of our 3 part series takes a look at the assessment of local metal loss. As we discussed in Part 1, there is strictly no definition of what constitutes local metal loss compared to general, so the accepted rule of thumb is to start with a Part 4 …
Fitness For Service General Metal Loss One of the most common damage classes (modes) found in static mechanical plant is metal loss. It can be caused by a number of damage mechanisms such as; -Atmospheric corrosion -Erosion -Sulphidation -Corrosion Under Insulation (CUI) -Microbiological Induced Corrosion (MIC) -Under Deposit Corrosion(UDC) -CO2 corrosion There are many more, and these can …
The 7-Rules to Follow Most people shy away from choosing a training company as they consider it is something of a shot in the dark. Training companies can be difficult to choose because there are many ways they could try and separate you from your hard-earned cash. There are some things you need to know about picking a training provider. …
The phone rings, my taxi is here. I kiss my family goodbye. My 4 year old runs off to play with something as my impending absence is instantly forgotten about. Unicorns are obviously much more interesting. My wife with a 7-month-old in her arms wishes me a safe journey before closing the door and rushing off to see what that …
What are the PSSRs and what do they cover? The Pressure Systems Safety Regulations 2000 (PSSR) cover the safe design and use of pressure systems with the aim to prevent serious injury from the hazard of stored energy (pressure) as a result of the failure of a pressure system or one of its component parts. The regulations are …
This article ‘Back to basics – Material Properties’ covers the essential properties when considering asset integrity. Material science in itself is a huge subject, with endless reference books and academic courses that cover the subject. Only a high-level understanding will be provided in this article. Stakeholders should be concerned with ensuring pressure equipment is safe to operate and the …
Pressure Relief Valves – Pressure equipment requires protection from over pressurisation. A common way to protect vessels is the installation of a pressure relief valve. A pressure relief device is actuated by inlet static pressure and designed to open during an emergency or abnormal conditions to prevent a rise of internal fluid pressure above the specified design value. This device …
Calculating Branch Connections: ASME B31.3 Para. 304.3.2 – Whenever a branch is added to the main pipe run (header) an opening is created by the removal of a predetermined amount of metal. We use Branch Connections: ASME B31.3 Para. 304.3.2 to consider the design. The header pipe is weakened as the metal removed is no longer there to resist the …
What is stress? Introduction In the most simplistic term, stress is simply a force divided by area. The most common unit we see in pressure equipment codes and standards is pounds per square inch (psi) for those that like imperial (and let’s face it, not many do). Or if you like to use SI units (metric) then we will often …
What is fitness for service? Fitness For Service (FFS) assessments are a set of methods that use quantitative data to determine if a degraded component is fit for continued service at the current operating parameters and to establish the useful remaining life of the component. Some case examples are found in this research paper. It is an analysis that …
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