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Member You - Have You Selected Wrong Materials for Chemicals?
Traditionally people have been using rubber stamps to put a seal on the important documents – marking the company name or other endorsements. These stamps have to be pressed on an inkpad first and then on the surface where the stamp is needed. Recently pre-inked stamps have made their way in the market and are highly preferred because of their neatness and superior print quality.Pre-inked stamps can be used for marking on any surface. These stamps are fast drying and water-resistant which makes it perfect for identifying personal items, photography, industrial equipment etc. There is no need of separate inkpads because the ink is present within the stamp itself. A clean, crisp impression is obtained every time a pre-inked stamp is used. Some commonly used messages in pre-inked rubber stamps are “WE APPRECIATE YOUR BUSINESS”, “THANK YOU FOR YOUR PAYMENT”, “PLEASE VISIT US AGAIN”, “A/C PAYEE ONLY”, “SEAS
However, there is one area where we seldom focus on - the effect of chemicals. Was the material selected able to withstand the chemicals? If you have done all your designing right and you still find that leaks are occurring so frequently, chances are that the materials are failing due to chemical reaction. Signs of corrosion at the seals are a strong indication of material failure due to wrong usage.
A well-planned and properly executed marketing program should include a sufficient commitment of capital resources to an on-going, well executed advertising program. Yes, this includes your business.Businesses spend too many dollars, however, on ads that simply will not result in increased sales and profits. These ads are poorly conceived, poorly written, poorly designed, poorly targeted, and poorly placed.Sounds like a poor way to do business, doesn’t it?I often ask clients (as tactfully as possible), why they have run a particular ad. I get a lot of blank stares. A few tense moments will pass while the client tries to think of a clever answer. "To get the company name out in front of the public so I can get more business." they reply, with some relief.This poor soul has just described a lack of a well defined goal, which leads almost inevitably to what I call an institutional ad.
Anyone who has visited a chemical processing plant is sure to notice the many pumps, agitators, tanks, piping, and valves that are installed there. Liquid have to be transferred from one place to another. Pumps are therefore very important in a chemical processing plant. Without them the chemical processing plant will literally come to a halt!
One of the main jobs for Plant Engineers is to maintain the numerous pumps installed at their plant. These pumps can count into the hundreds or even thousands, depending on the size of the plant. So you should realize that to do a proper preventive maintenance, it is no mean task. There must be regular schedules, proper tracking of jobs done, available manpower and skills, suitable tools, replacement parts, materials and a proper system of administration of all these.
Sometimes, even with all the maintenance activities being carried out, pumps do fail. And when they do, plant engineers will have to find out what causes them to fail. Especially with new pumps where there is very little record trend of breakdown, engineers will be hard pressed into finding solutions for this. This is when experience helps in pinpointing the cause(s) of the failure.
Pumps or other machinery will give tell-tale signs when they are not working properly. An observant pump user will be able to avoid major breakdowns or damage if the problem is corrected early.
In order to solve any pump problem, we need to notice the symptoms carefully so as to determine the most likely causes. Instruments like pressure gauges are very helpful and should be installed in the pumping system.
Very often we do have to rely on our 5 senses to determine the exact symptom. Normally, pump problems can be classified into:
1) Suction Related,
2) System Related, or
3) Mechanical Related.
It can also be a combination of these.
Most of the system related problems occur because of design flaw. For example, the designer may have chosen the wrong pump whose characteristic does not match the system requirement. Suction related problems are usually caused by air locks that are due to a variety of reasons. I will not mention them here.
The effects of mechanical related problems could manifest themselves as suction related problems - air leaks in the system, worn out impellers, and mouth rings - but the most common symptom is the presence of vibration and abnormal noise in the equipment.
However, there is one area where we seldom focus on - the effect of chemicals. Was the material selected able to withstand the chemicals? If you have done all your designing right and you still find that leaks are occurring so frequently, chances are that the materials are failing due to chemical reaction. Signs of corrosion at the seals are a strong indication of material failure due to wrong usage.
A conference call is a call in which three or more parties interact simultaneously. Always a cost effective way to reduce travel expenses, conference call technology has advanced to provide a more interactive user experience. Today's conference calls not only include telephone communication, but also video and web communication. One of the most popular services allows clients who do not have video conferencing equipment to connect via the web, thereby participate using only their web browser.Conference calls can be used for entertainment or for social purposes like party lines. People call to a specified telephone number that allows them to talk to others, and perhaps subsequently meet new people. Conference calls are most commonly used by businessesAnother conference facility that is widely used is the Conference Bridge. The Conference Bridge allows users to allow a company to set up and partic
One of the main jobs for Plant Engineers is to maintain the numerous pumps installed at their plant. These pumps can count into the hundreds or even thousands, depending on the size of the plant. So you should realize that to do a proper preventive maintenance, it is no mean task. There must be regular schedules, proper tracking of jobs done, available manpower and skills, suitable tools, replacement parts, materials and a proper system of administration of all these.
Sometimes, even with all the maintenance activities being carried out, pumps do fail. And when they do, plant engineers will have to find out what causes them to fail. Especially with new pumps where there is very little record trend of breakdown, engineers will be hard pressed into finding solutions for this. This is when experience helps in pinpointing the cause(s) of the failure.
Pumps or other machinery will give tell-tale signs when they are not working properly. An observant pump user will be able to avoid major breakdowns or damage if the problem is corrected early.
In order to solve any pump problem, we need to notice the symptoms carefully so as to determine the most likely causes. Instruments like pressure gauges are very helpful and should be installed in the pumping system.
Very often we do have to rely on our 5 senses to determine the exact symptom. Normally, pump problems can be classified into:
1) Suction Related,
2) System Related, or
3) Mechanical Related.
It can also be a combination of these.
Most of the system related problems occur because of design flaw. For example, the designer may have chosen the wrong pump whose characteristic does not match the system requirement. Suction related problems are usually caused by air locks that are due to a variety of reasons. I will not mention them here.
The effects of mechanical related problems could manifest themselves as suction related problems - air leaks in the system, worn out impellers, and mouth rings - but the most common symptom is the presence of vibration and abnormal noise in the equipment.
However, there is one area where we seldom focus on - the effect of chemicals. Was the material selected able to withstand the chemicals? If you have done all your designing right and you still find that leaks are occurring so frequently, chances are that the materials are failing due to chemical reaction. Signs of corrosion at the seals are a strong indication of material failure due to wrong usage.
Are you thinking of slowing down or stopping your job search activities during the holiday season? Many job seekers do. Which means better opportunities for those who do not.Here's why:Less competition! Jobs don't disappear during the holidays, but many job seekers do. Whether it's due to family vacations or just an attitude of "I'll relax a bit now, then double my efforts after the New Year begins," fewer people will be competing for your dream job this time of year.New openings! Many companies interview during November and December for new positions starting at the first of the year. The hiring managers are eager to find people who will help them get off to a great start in 2006.More networking opportunities! 'Tis the season for parties, socializing, card-sending... networking! Attend as many events as you can, and let people (even your relatives) know you're
Pumps or other machinery will give tell-tale signs when they are not working properly. An observant pump user will be able to avoid major breakdowns or damage if the problem is corrected early.
In order to solve any pump problem, we need to notice the symptoms carefully so as to determine the most likely causes. Instruments like pressure gauges are very helpful and should be installed in the pumping system.
Very often we do have to rely on our 5 senses to determine the exact symptom. Normally, pump problems can be classified into:
1) Suction Related,
2) System Related, or
3) Mechanical Related.
It can also be a combination of these.
Most of the system related problems occur because of design flaw. For example, the designer may have chosen the wrong pump whose characteristic does not match the system requirement. Suction related problems are usually caused by air locks that are due to a variety of reasons. I will not mention them here.
The effects of mechanical related problems could manifest themselves as suction related problems - air leaks in the system, worn out impellers, and mouth rings - but the most common symptom is the presence of vibration and abnormal noise in the equipment.
However, there is one area where we seldom focus on - the effect of chemicals. Was the material selected able to withstand the chemicals? If you have done all your designing right and you still find that leaks are occurring so frequently, chances are that the materials are failing due to chemical reaction. Signs of corrosion at the seals are a strong indication of material failure due to wrong usage.
It is a common knowledge that women are receiving lower wages than men do. The reason for that is cultural barrier; it also has to do with the general attitude toward women in the workplace. The sexual discrimination resulted in the feminism movement all over the world.Women's aspiration to the boardroom is a symbol and a measure of organisational change, it reflects the current mood of today and how women are not just trying to achieve their goals for the feminist movement but rather for their own self-satisfaction and to satisfy their ambitions.The boardroom is a male dominated world and not always inclined to change, as a result they face cultural and attitudinal barriers to entering the boardroom as they can be seen to disrupt the status quo of the boardroom and the "old boys club".Because the corporate boardroom is seen as an area of power and authority, it makes it difficult
Very often we do have to rely on our 5 senses to determine the exact symptom. Normally, pump problems can be classified into:
1) Suction Related,
2) System Related, or
3) Mechanical Related.
It can also be a combination of these.
Most of the system related problems occur because of design flaw. For example, the designer may have chosen the wrong pump whose characteristic does not match the system requirement. Suction related problems are usually caused by air locks that are due to a variety of reasons. I will not mention them here.
The effects of mechanical related problems could manifest themselves as suction related problems - air leaks in the system, worn out impellers, and mouth rings - but the most common symptom is the presence of vibration and abnormal noise in the equipment.
However, there is one area where we seldom focus on - the effect of chemicals. Was the material selected able to withstand the chemicals? If you have done all your designing right and you still find that leaks are occurring so frequently, chances are that the materials are failing due to chemical reaction. Signs of corrosion at the seals are a strong indication of material failure due to wrong usage.
As busy professionals we are always on the lookout for the best way to accomplish our goals. We want more freedom to enjoy the benefits that being our own "master" provides. As we seek to expand our prosperity and productivity we encounter many individuals who help and support us on our path.But what about when we find ourselves going back again and again for help and ... it isn't working. The "answer" always seems to be one off from the solution that we're seeking. Maybe if we would look at life just a little differently from the inside, we would see a dramatic change on the outside.Often the challenges we face as entrepreneurs, parents or individuals - aren't the real problem at all and we get caught in an endless loop trying to solve the obvious, only to have the problem reoccur again, and again. The next time it may look exactly the same - or maybe it wears a different face.Consider t
However, there is one area where we seldom focus on - the effect of chemicals. Was the material selected able to withstand the chemicals? If you have done all your designing right and you still find that leaks are occurring so frequently, chances are that the materials are failing due to chemical reaction. Signs of corrosion at the seals are a strong indication of material failure due to wrong usage.
Nowadays, waste treatment plants or even process plants are called upon to process strong acids, alkalis, oxidizers, solvents, waste, slurry and other corrosive and abrasive chemicals. And it is not only pumps that are affected. Agitators, storage tanks, and piping need to be compatible to these chemicals. If the wrong material is selected, it can lead to dangerous and widespread consequences of chemical spills, emergency evacuation, pollution, environmental damage and other disruptions to the production facility.
Engineers in such chemical processing plants need to know what materials are suitable to be used for their process. It is much more complex than just selecting materials for water pumps. Much detailed and careful selection choices based on the chemicals, the temperatures (because some of the plastic materials can weaken at temperatures that are considered normal for metals), chemical reactions, safety, spills and many others have to be taken.
The aim of any maintenance personnel is to lengthen the lifespan of equipment under his care. Selection of chemical resistant materials is not a one-cure-fits-all solution. Some materials are not affected by certain chemicals but can be damaged by others. Some have good mechanical strength while others cannot last long without reinforcement. Usually, materials that can withstand many types of chemicals are very expensive.
Cost considerations need to be taken into account when choosing a material for a certain application. If there is a choice of materials for a certain application, it makes better sense to choose cheaper materials if they can perform just as well.
There are several components to check for when selecting suitable materials:
1) Elastomers for flexible parts like seal rings and gaskets
2) Metal parts like shafting, springs, holders, bolts & nuts, and pressure gauges
3) Plastic parts like housing, piping, impellers, and covers
Metals have good mechanical strength that can last very long in operation. In fact some parts need to be made of metal, e.g. bearing housing and shafts. Pump housing made of metal can be casted and machined easily. They are able to withstand abrasive fluids and rough handling without any other reinforcement. One very important characteristic of metals is heat conduction. If the chemical to be pumped is hot, metal is always the choice.
Plastics have become the better choice for many corrosive chemical applications because it is more resistant to chemical action than metals. When using plastics to replace metals, you have to compromise on the mechanical strength of the pump. If the pump does not encounter
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