EN 1829-1-2010 pdf download.High pressure water jet machines-Safety requirements-Part 1 Machines.
5.9 Requirements for vibration with hand-held spraying devices
Machine design shall ensure a vibration emission level at the spraying device as low as reasonably
achievable.
5.10 Requirements for program controlled water jet machines
Program controUed water jet machines where the jet is activated and stopped without direct operator intervention shall be protected by safety devices e.g. by the use of enclosures, interlocking guards, etc. so that a person cannot come into the danger zone in accordance with EN 953, EN 981, EN 1088, EN ISO 13857. The danger zone includes all the space the high pressure water jet can reach.
If the manufacturer is not supplying the safety devices for the danger zone he shall give appropriate information about their installation in the Instruction Handbook (see 7.1).
5.11 Marking the control devices
Manually activated control devices such as push buttons, selection switches, etc. shall be marked with their function, either on or directly next to the operating element. Preferably, internationally standardised graphic symbols (pictograms) should be used. (See ISO 7010, EN 60204-1, and EN 61310-2.)
6 Verification of the safety requirements andlor measures
6.1 General
The entire high pressure water jet machine shall be subjected to a successful functional test at the maximum power available and with the nozzle that produces the maximum allowable working pressure.
Particular attention shall be paid to:
— the correct functioning of the controls and pressure indicator,
— operation within the maximum allowable working pressure:
— the absence of leaks.
Failure to meet these criteria will constitute a failure of the test.
The correct selection of hose lines and spraying devices shall be verified by inspection. All labelled maximum allowable working pressures shall be the same as or greater than the maximum allowable working pressures of the pressure generator.
6.2 HydrostatIc pressure test
A hydrostatic pressure test shall be carried out with a test pressure as defined in 5.3.1 (this can be generated by the machines pressure generator wten the drive power is sufficient). The hydrostatic pressure test shall be carried out in accordance with EN 12162. Furthermore the pressure relief device would either have to be removed or reset when the test in the previous paragraph is carried out
6.2.1 Testing of safety devices for preventing excessive pressure
6.2.1.1 Re-seatable safety devices
The function of the safety device shall pass the following inspections and tests:
before starting the pressure test, verification of the device with the construction/design documents shall be made;
visual inspection to verify that the tamper-proof seal at the pressure setting adjuster is undamaged;
the operating pressure shall be raised until the device operates. The pressure at which the device operates shall not exceed the values given in 5.2.2. The water used in the test shall be clean to avoid contamination of the valve seating that could cause subsequent leakage.
6.2.1.2 Non re-seatable safety devices
The device shall be checked by visual inspection to ensure conformance with the data in the Instruction
Handbook,
6.2.2 Pressure indicator
The pressure indicator shall be checked during the functional test according to 6.1 as follows:
a) check whether the display is able to function;
b) visually check the proper positioning of the pressure indicator according to 5.2.3.
62.3 Hydrostatic pressure test of spraying devices
Spraying devices shall be exposed to a static pressure test of 1,5 times the maximum allowable woricing
pressure for a period of at least 30 s.
6.3 Mechanical tests and/or visual inspection
6.3.1 General
Before the start of the test, the spraying device shall be examined to identify leaks and the connection lines shall be vented.
Spraying devices shall also be subjected to a function test at the maximum allowable working pressure.
6.3.1.1 Testing of manual’y operated spraying devices
The minimum length and the recoil force shall be measured in accordance with 5.3.2. The activating
mechanism shall be verified by functional test and visual inspection in accordance with 5.3.2.
6.3.1.2 Testing the stability of mechanically operated spraying devices
The stability of mechanically held spraying devices shall be tested at the highest foreseeable recoil force of any permitted nozzle and/or insert as specified by the manufacturer in accordance with 5.3.2.2.
6.3.1.3 Testing of hose-lines See part2ofEN 1829.
6.3.2 Testing the stability of the high pressure water jet machine
The stability against tipping shall be proven for an un-intended change of position e.g. by an appropriate
function test or by calculation in accordance with EN 809.
6.4 Transport devices
The existence of transport devices shall be proven by visual inspection.EN 1829-1-2010 pdf download.