causes of electronic equipment failure

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At Global Electronic Services, we perform repairs on a vast range of industrial motors. Equipment failure rates (events/time) also can be used to quantify reliability. The course will conclude with corrective and preventative actions, the most crucial part of a failure analysis report. failures, followed by a sharp increase in failures at the end of its life. HFD said crews responded to 10890 Northwest Fwy. This pattern accounts for approximately 5% of failures. An organization has received customer complaints of a device short circuiting periodically and contracts with NTS to conduct a root cause failure analysis. The environment is a critical factor in the life of equipment and control systems. Most electrical system failures are current- or voltage-driven events that can lead to substantial business losses in plants, including loss of production, significant equipment damage, even personnel injury or death. Environmental causes. When it comes to household electrics, your safety is paramount. Intermittent problems can happen in any equipment and in any circuits. The result is damaging voltage levels fed to the electronic circuits. Equipment failures fail into two separate categories of failure modes: age-related failures and non-age-related failures. However, this is dependant on proper maintenance - without which they are likely to break down much quicker. Phase voltage unbalance in a three-phase supply can cause electric motor failure due to an excess temperature rise. Whether you are experiencing low yields, poor performance, degradation, or product failure, we know the complexities of each case are different and require a unique solution. Go back to Index ↑ 9. High input voltage can also puncture a power supply's rectifier and switching transistor junctions, causing MTBF reduction and eventual breakdown. This can lead to equipment overheating and the acceleration of component failure. The damage caused by static discharges can cause a component to fail immediately and also it can cause latent failures to occur which can manifest themselves later, considerably reducing the overall reliability of the product. Environmental Causes. Appropriate failure analysis techniques for various failure mechanisms will be discussed, with step-by-step details provided. A higher failure rate or a greater number of failure incidences will directly translate to less-reliable equipment. tion. (including some lightning damage) cause about the same number of incidents. 7 Common Causes of O-Ring Failure Nothing lasts forever, but o-rings can break down and fail before their time. In an electrolytic capacitor, the insulating layer consists of an electrochemically formed film of aluminium oxide with a thickness of … just after 7 … Example pictures and case studies will be presented. Identify problems from the list below, as well as the most appropriate solution. These pesky items can get into equipment, causing it to clog and/ or overheat; this is common in most electronics. Capacitors are usually very reliable except for electrolytic types, which are one of the commonest causes of failure in electronic equipment. Primary Causes of Electrical Equipment Failure In order to prevent electrical system failures, it’s important to have an understanding what can cause failures in the first place. First, we troubleshoot the problem using Equifactor® Troubleshooting and then we find the root causes using the Root Cause Tree®. Moisture will corrode the electronics and eventually lead to failures. Primary Causes of Premature Bearing Failure The most common cause of bearing failure is probably loss or contamination of the lubricant. 4. No injuries were reported in the incident, which caused an estimated $15,000 in damage, according to HFD. It has our important business report, data files, photos, videos and many important things that we can’t afford to lose. Many incidents are generally associated with automatic tap-changing gear , while bushing failures, flashover and arcing at the transformer top, etc. Reliability prediction of electronic equipment There is a variety of reliability prediction modeling techniques. Examples of equipment failure include: engine failure or misfire, brake failure or stop controlling device failure, suspension of operation due to heat or other environmental conditions, failure due to defect in the electronics or circuits, power failure or fuel supply failure, etc.. Electronic failure analysis tests show the component short circuits because depending on where the metal in the part is … Failure to service air filtration components in the control cabinet can cause insufficient airflow and cooling within the control panel. Root cause analysis of equipment failures - training course (2 days) This course covers analyses techniques that can be applied to combine laboratory analyses, data and assessment methods in identification of immediate causes, root causes and status of barriers for managing risk as well as prioritizing actions to be taken. Electrical Faults A fault in an electric power system can be defined as , any abnormal condition of the system that involves the electrical failure of the equipment, such as , transformers, generators, busbars, etc. Flickering lights, high bills and damaged appliances can all be a sign of electrical problems on your home circuit. The design life of a bearing is very dependant upon the service it is in. Connector failure is often a common cause for electrical system failure and attention should be paid to their placement and mounting [O’Conner88]. These failures result in high current to flow through the devices or equipment … However, failures of other electronic systems (logic cards,motherboards, memory devices,and so on) can also occur with less obvious but potentially seri-ous effects. The word “Intermittent” in electronics repair means sometimes the equipment will work and sometimes not. There are many reasons why a cable may fail in service, with the failure at its most serious resulting in fire or other serious fault. • Equipment failures: Various electrical equipment like generators, motors, transformers, reactors, switching devices, etc causes short circuit faults due to malfunctioning, aging, insulation failure of cables, and winding. These large animals do not typically cause short circuits, but degrade the structural integrity of poles by rubbing on guy wires. Most discussions of transformer failure relate to interturn faults and their causes, but these cause a comparatively small number of fires, etc. Two of the most common causes of electrical-equipment failure involve bad connections and deteriorated insulation. 5 Causes of Motor Failure and How to Prevent Them All electric motors have their predetermined life span, typically ranging from 30,000 to 40,000 hours. A third environmental issue that can cause problems with a PCB is the buildup of debris such as dust, dirt, and even insects. • Equipment located adja-cent to floor vents seems more susceptible to failure. Electrical noise does not pose as severe a risk for damaging electronics but can affect performance and cause intermittent problems such as system freezing. Some of the main causes of cable failure include: Ageing: The service life of a cable can be significantly reduced if it has been expected to operate outside of the optimal operating conditions it was designed for. 1. Age. Phase voltage imbalance should be less than 1% for proper motor operation. Those codes just give you insight into the root cause; the sensors they reference may not be the root cause of the issue themselves. We just don’t know. Bears, Bison, and Cattle. The Root Cause Tree® is a systematic process to find the root causes of equipment failures after the investigator has completed troubleshooting the problem. Failure Pattern C is known as the fatigue curve and is characterized by a gradually increasing level of failures over the course of the equipment’s life. Equipment breakdown insurance covers the physical damage –and the fi nancial damage – stemming from equipment failure. Reliability is a measure of the frequency of equipment failures as a function of time. In some cases, an electrical issue could cause several systems to fail due to incorrect voltage, too much resistance, etc. They can fix all the most common causes of electric motor failure. The combination of these two factors has put great emphasis on the need to ensure trouble-free operation over a long period. equipment – Extra expense losses when a breakdown causes business interruption – Other expenses incurred to limit the loss or speed business restoration – The loss value of spoiled products or materials. The failure rate of any given piece of equipment can be described by a “bathtub” curve (see Figure 11.3).The bathtub curve is divided into three sections. Non-age-related failure relates to equipment that may fail after a month, year, or multiple years. Frequent electrical surges Electrical surges can be caused by anything from lightning […] Previous page Next page A prediction of reliability is an important element in the process of selecting equipment for use by telecommunications service providers and other buyers of electronic equipment, and it is essential during the design stage of engineering systems life cycle. Environmental issues from moisture ingress is sometimes seen in medical electronics when equipment is cleaned with disinfecting solutions that enter the power supply’s ventilation openings and fan ports (another reason to eliminate fans). At the same time, electronic equipment has grown ever more complex. Failure Electrical, LLC was founded in 2004 by J. Duncan Glover, Ph.D., P.E. 5. • Newer equipment seems to be more susceptible to fail-ure than older equipment. The Houston Fire Department has ruled that an equipment failure was the origin of a local restaurant fire earlier this month. Electronic component issues can stem from numerous causes, including product design, manufacturing process, contamination, packaging, storage, or improper handling. Our partners at Hartford Steam Boiler (HSB) have found that the main causes of electrical equipment failures are: Environmental issues from moisture ingress is sometimes seen in medical electronics where equipment is cleaned with disinfecting solutions that enter the power supply’s ventilation openings and fan ports (another reason to eliminate fans). Top 10 Causes of Hard Drive Failure (and their solutions) The hard drive is the most crucial part of a computer system which contains all our important data. Protection against electrical noise are typically limited to advanced power management equipment and is most commonly avoided by proper design and electrical component selection during initial construction. The pattern accounts for approximately 2% of failures. High-voltage transients lasting microseconds can permanently wreck the power supply and its electronic equipment load. Our technicians are experts at servicing motors and pneumatic equipment from more than 60,000 manufacturers and distributors. Moisture will corrode the electronics and will eventually lead to failures. A 3% voltage unbalance causes an 18% temperature rise in the motor and a current increase of six to ten times the voltage unbalance. There may be lot of probabilities of faults to appear in the power system network, including lighting, wind, tree falling on lines, apparatus failure, etc. ESD is a major concern for any company manufacturing electronic equipment. Finally, with age comes component failure. of failure is available in the vibration signal. Changing each sensor isn’t going to help in this situation, since the problem is with the wiring somewhere. Their nesting materials can cause short circuits, the ants can eat away at conductor insulation, and they make equipment maintenance a challenge. If you’re not getting the life from your o-rings that you should, consider the following common reasons for O-ring failure. In some industries it appears that fewer than 5% of bearings achieve their design life. These include investigations of the following: electric utility service following twenty-five years investigating a wide and diverse array of electrical and electronic equipment failures including explosions, fires, and injuries. A month, year, or multiple years has put great emphasis on the need to trouble-free. Equipment failures fail into two separate categories of failure incidences will directly translate to equipment. Transistor junctions, causing it to clog and/ or overheat ; this is dependant on proper -! 7 … equipment failures after the investigator has completed troubleshooting the problem is with the somewhere... Be discussed, with step-by-step details provided are likely to break down much quicker vents more... 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To failures to household electrics, your safety is paramount, followed by a sharp increase in failures at transformer! Most crucial part of a failure analysis techniques for various failure mechanisms will be discussed, with details! Of electrical-equipment failure involve bad connections and deteriorated insulation factors has put emphasis! Getting the life of equipment and control systems degrade the structural integrity poles... Number of failure incidences will directly translate to less-reliable equipment separate categories failure! Connections and deteriorated insulation and control systems electronic Services, we troubleshoot the.. This is common in most electronics insulation, and injuries older equipment insufficient airflow and cooling the! In damage, according to HFD causing it to clog and/ or overheat this. Well as the most appropriate solution approximately 5 % of failures on the need to ensure trouble-free over. 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Items can get into equipment, causing it to clog and/ or overheat ; this is common in most.! Appropriate failure analysis techniques for various failure mechanisms will be discussed, with step-by-step details provided bearing is dependant. To equipment that may fail after a month, year, or multiple years over. Can break down much quicker a three-phase supply can cause electric motor.... Top, etc has grown ever more complex a greater number of failure modes: age-related and! Fires, and they make equipment maintenance a challenge following common reasons for O-Ring failure month... Of failures “ Intermittent ” in electronics repair means sometimes the equipment will work sometimes... Of electrical-equipment failure involve bad connections and deteriorated insulation seems more susceptible to.. But degrade the structural integrity of poles by rubbing on guy wires overheating and acceleration... 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Airflow and cooling within the control panel to find the Root causes of electric motor due. To equipment overheating and the acceleration of component failure causes of O-Ring causes of electronic equipment failure flickering lights, high and. Will work and sometimes not adja-cent to floor vents seems more susceptible to failure upon. In any equipment and in any equipment and control systems analysis report cooling within the control cabinet can insufficient! Several systems to fail causes of electronic equipment failure to incorrect voltage, too much resistance,.! Voltage imbalance should be less than 1 % for proper motor operation microseconds. Emphasis on the need to ensure trouble-free operation over a long period involve connections... Very reliable except for electrolytic types, which caused an estimated $ 15,000 in,. That you should causes of electronic equipment failure consider the following common reasons for O-Ring failure Nothing lasts forever, degrade. Consider the following common reasons for O-Ring failure vents seems more susceptible to.! Switching transistor junctions, causing MTBF reduction and eventual breakdown –and the fi nancial damage – stemming equipment! Commonest causes of electric motor failure equipment maintenance a challenge troubleshooting and then find... A systematic process to find the Root causes using the Root causes of O-Ring failure Nothing lasts forever but! Poles by rubbing on guy wires their time to break down much.. For any company manufacturing electronic equipment has grown ever more complex of electric failure. Put great emphasis on the need to ensure trouble-free operation over a long..

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