Just about everyone can recognize the benefits of sterilization to eliminate bio-burden in a plumbing system. Heat or chemicals toxic to living organisms are periodically introduced to kill the offending critters. This process can be conducted using either CIP (Clean In Place) or COP (Clean Out of Place) procedures. CIP simply means cleaning by flushing …
Previous blogs have addressed what might be called the universal or common requirements for sanitary plumbing. Although obviously important, things like selecting the right materials and surface finishes are only the beginning of designing a system which is compliant with the requirements for a sanitary system as they may be defined by a particular user. …
As revealed in the preceding post, the material of construction is a critical factor in the design of “sanitary” plumbing. Although the selection of material is important, there are other considerations that are equally important in the design of a system that will resist contamination. Surface Finish – Surface finish can have a significant influence …
I can think of no term found in specifications for cleaning machines that causes more controversy and confusion than the term “Sanitary Plumbing.” This term, frequently found in specifications for cleaning and processing systems destined for the semiconductor, medical, food processing and a growing number of other markets is vague and means different things to different industries …
When parts aren’t coming clean two of the first things most process engineers target as potential problems are the temperature and concentration of the chemistry. These are, in most cases, good bets but one should resist knee-jerk reactions. Chemical Concentration – One of the common knee-jerk reactions to a cleaning problem is to increase chemical …
Surface cavitation erosion of ultrasonic transducers is a topic that users and manufacturers of ultrasonic equipment would often rather not talk about – – but we must. The erosion of a transducer surface due to surface cavitation is inevitable over time. Its severity depends on several factors, some of which can be controlled and some …
In the preceding blog I indicated that liquid in process tanks can be heated by the effects of ultrasonics and pumping as well as by surface-mounted or immersion heaters. The fact is that some process tanks may require cooling, not heating, to remain at the desired temperature. Since we have looked at the possible sources …
We all know that temperature is an important parameter in cleaning and cleaning-related processes. Too little and cleaning will be ineffective. Too much can lead to possible chemical separation, part degradation and loss of ultrasonic cavitation. So providing the proper temperature is mandatory for the best cleaning result. Sounds easy? Well, yes and no – consider …
So, the goal is to get the air out of the system so that the pump can operate properly. In the preceding blog I explained what factors might keep air from escaping from the inlet side of the pump. It would, then, be a logical question to ask, “Why doesn’t the air just go out the …
Let’s again look at the system schematic shown in the preceding blog. This time, however, it is shown with an “air lock.” The centrifugal pump, unable to pump air, is not able to move liquid to replace the air trapped in the plumbing system. At first glance, it may not be obvious how this condition …
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