This European Standard establishes the technical safety requirements for: constructing; assembling; erecting; operating; servicing; a liquid pump or pump unit. It contains a list of significant hazards, which can arise with the use of a liquid pump or pump unit, and establishes the requirements and/or protective measures which will lead to a reduction of the risks. Liquid pumps covered by this European Standard are: rotodynamic pumps; rotary positive displacement pumps; reciprocating displacement pumps; supplied separately without drive (electric motor or internal combustion engine). In general, pumps are defined as being terminated by their inlet and outlet connections as well as by their shaft ends. Pumps supplied in this form are usually called bareshaft pumps. They are 'machines' in the definition of the Machinery Directive. The assembly of a bareshaft pump with its driver can require measures that are outside the scope of this European Standard. Pump units are described as: Liquid pumps together with a driver and including transmission elements, baseplates, and any auxiliary equipment. This European Standard does not deal either with the technical safety requirements for the design or manufacture of drivers nor of auxiliary equipment. It does not set down either requirements for the risks directly arising from means provided for the portability, transportability and mobility of pump units during or between periods of their operation, nor the requirements for transmission shafts linking a tractor or other self-propelled machinery to a pump. This European Standard does not cover pumps and pump units for the following applications: pumps and pump units whose only power source is directly applied manual effort; pumps and pump units for medical use used in direct contact with the patient; pumps and pump units specially designed or put into service for nuclear purposes which, in the event of failure, can result in an emission of radioactivity; pumps and pump units for use on seagoing vessels or mobile off-shore units; pumps and pump units specially designed for military or police purposes. Neither does it cover pumps and pump units for hydraulic power transmission. Specific requirements for particular features of pumps additional to the common requirements set out in this standard can be found in other standards such as EN 1028, EN 1151, EN 1829, and in the European Standards on submersible pump units and for liquid pumps for the use in agrifoodstuff industries. This European Standard is not applicable to pumps and pump units which are manufactured before the date of publication of this European Standard.