Practical Application of Regulations for a Centrifugal Mixing Pump

With proper guidance from experts and the correct selection of professional literature, they found the sought-after answers. The diploma thesis required extensive research and reading to arrive at information describing the rules and procedures for handling, contained in relevant laws and standards.

Problem

With proper guidance from experts and the correct selection of professional literature, they found the sought-after answers.

Solution and Method

The diploma thesis required extensive research and reading to arrive at information describing the rules and procedures for handling, contained in relevant laws and standards. The main guidelines that provide the standard frameworks for a centrifugal mixing pump are found in the relevant legislation, the regulation on machinery safety and product standards, as well as in many other important standards that define the pump as a suitable machine for placing on the market. The relevant legislation is the 'Act on Technical Requirements for Products and Conformity Assessment (ZTZPUS)'. With its conditions and requirements, we arrange everything necessary, such as the accessibility of the pump itself on the market, or that we can place the pump on the market or put it into use.

If the pump does not meet the conditions, it means that it does not comply with its technical and other requirements, which dictate how it must be made to comply with strict European legislation. In this legislation, we also find precisely defined explanations for individual terms which interpret this legislation. These terms include, for example, who issues the document 'Declaration of Conformity' and what it states, then who is considered an economic operator, what type of measure is a 'recall', and so on.

Among other things, it is worth mentioning that products which are made under special laws are not subject to this law. In the regulation on machinery safety, we find what the term machine means and how it is defined, who supervises the implementation of this regulation, how supervisory bodies are determined. It then tells us who ensures and what needs to be ensured before the first placing of the pump on the market.

These are primarily safety and health requirements, an annex of technical documentation, instructions for the machine, what procedure was used for conformity assessment, a declaration of conformity of the machine, and finally the CE marking, which means that the machine meets the requirements of this regulation and the conditions from the Act on Technical Requirements for Products and Conformity Assessment. However, it is important that it sets out the essential safety and health requirements in the manufacture and design of the machine, such as various safety devices, ergonomics of the machine, materials used in its manufacture, how control systems and devices are designed, how the machine can be started or stopped, and so on.

There is also a product standard for pumps and pump units, which covers general safety and technical requirements on the pump itself. The standard itself specifies the scope of application, which regulations it refers to, what the list of hazards is that may occur when using the pump. It then describes which safety requirements or measures must be implemented when the described hazards occur.

These are requirements for preventing various hazards, such as mechanical, electrical, thermal hazards, hazards due to materials and neglect of ergonomic principles, hazards in the supply of electrical energy, breakage of machine parts and other malfunctions. Likewise, it includes a declaration of conformity with safety requirements, a procedure for verifying the compatibility function, documentation, hydrostatic pressure testing of loaded elements. Among other things, it is worth mentioning noise measurements, protective devices, strength, surface temperatures and, of course, instructions for use and a user manual.

However, we must not forget about EMC (electromagnetic compatibility) or the regulation on electromagnetic compatibility for the pump, which they will briefly describe. EMC is the ability of a device to function properly without causing potential interference. It does not deal with the safe operation of equipment and does not fall under safety regulations.

However, there are other regulations that deal with safety management in areas of human activity, material resources and animals, so that they can set higher safety standards for electromagnetic compatibility. With the above description, they thus became acquainted with certain solutions and arrived at useful data when working with a centrifugal pump, which give us guidelines for further work.