BS/EN 16704-2-2-2016 pdf download.Railway applications Track Safety protection on the track during work
Part 2-2: Common solutions and technology Requirements for barriers.
It shall be possible to mount, position and remove all components easily and:
— preferably from outside of the track, and
— preferably without removing ballast or anti-vibration devices mounted to the rail, The various associated components shall allow quick assembly and disassembly. The construction shall allow during use:
— temporary demounting of single modules;
— variation of the distance to the track;
— the removal of horizontal components without a tool in case of emergency.
Components made of electrical non-conductive material shall have a length not exceeding 3.20 m.
Components made of metal or other electrical conductive material shall have a length not exceeding
2,00 m.
NOTE 2 In case of a maximum length of 3,20 m the distance from the track does change only in a range of f= 1 cm to 2 cm, even in small curves (R = 80 m) [[approximately length2/(8R)J.
It shall be possible to adjust the length of a module in a range of 0,4 m minimum (e.g. by adjustable horizontal components or by variable fixing points for the horizontal components).
5.2 HorIzontal components
Principal and intermediate guardrails shall have a minimum cross-section height of 35 mm (see Figure 4).
If intermediate guardrails are provided, any gap shall be so dimensioned that a sphere of 470 mm diameter will not pass through the protection. If there are no intermediate guardrails or if it is not continuous, the intermediate protection shall be so dimensioned that a sphere with a diameter of 250 mm will not pass through it.
5.3 Mounting of horizontal components at different transversal distances
It shall be possible (e.g. by extendable devices) to position the horizontal components at transversal distances at least at 1,90 m, 2,00 m, 2,10 m, 2,20 m, 2,30 m, 2,40 m and 2,50 m (±20 mm) (see Figure 3) measured from centre of the track to the inner part of the barrier at the level of the horizontal components.
5.4 Extendable devices
Extendable devices shall be equipped with a locking device for fixing at the chosen distance (prevention against accidental variations in length (due to operation and impact, vibrations, etc.)].
Each position of extendable devices shall be marked clearly.
5.5 Track gauge requirements
Barriers including attachment devices shall respect the gauges of the track (for information see series of standards of EN 15273). For examples of vertical components see FigureS.
5.6 Height
Barriers shall prevent people from unintentionally entering into the danger zone.
The height of the principal guardrail above the bottom of the rail (hmn) shall be at least 880 mm, but it iS recommended to achieve a mm. height hm,n 01 1000 mm as mentioned in EN 13374. The maximum height of components above the bottom of rail (hm) shall be in accordance with Annex A (see also Figl1res 4 and 5) after preliminary loads according to 6.4.2.1.
For specific national requirements and rules see also Annex A.
Information about the most commonly used materials is given in EN 12811-2. Material requirements for nets are given in EN 1263-1.
For general calculation of the design to pass the testing procedures according to Clause 6 of this standard, EN 13374 is useful.
5.7.2 Special requirements for steel
Steels of deoxidation type FU (rimming steel) shall not be used.
Information on common types of corrosion protection is given in EN 1281 1-2.
5.7.3 Special requirements for timber
For the requirements concerning the wood and plywood apply EN 13374:20 13, 5.3.3.
5.7.4 Material for weights and counterweights
The materials employed shall be solid. Granulated or fluid materials such as sand or water shall not be used. Each weight and each counterweight shall be capable of being positively secured against accidental displacement.
6 Test methods for stability requirements
6.1 General
The test shall be carried out in accordance with the requirements in Clause 6 of this standard, and additionally relevant European Standards shall he used. Unless otherwise indicated in the following. testing shall be conducted by way of visual examination and measurement.
Each testing laboratory which carries out the test shall be able to demonstrate competence to carry out the relevant testing requirements of this standard.
NOTE 1 Some countries have systems for national accreditation of testing laboratories.
NOTE 2 Figures used in Clause 6 to explain the testing procedures of rail mounted barners are examples only. 6.2 Applying the loads
The loading point shall be maximum 100 mm x 100 mm or with smaller elements, the width of the element x 100 mm.
When testing nets or fencing structures a distributing plate of maximum 300 mm x 300 mm is required. Stability of the test rig structure shall comply with EN 364:1992, 4.4 (the natural frequency shall not be lower than 100 Hz and the deformation shall not exceed 1 mm in the fIxing point at a force of 20 kN).BS/EN 16704-2-2-2016 pdf download.