BS EN 1502:2020 pdf download

BS EN 1502:2020 pdf download.Inland navigation vessels — Boarding stairs.
4.2.4 Handrails and beam
4.2.4.1 The handrails and the beam shall be made from tubular section.
4.2.4.2 The handrails shall be fitted on both sides. The handrail on the left hand side, as oneascends, shall only be extended to the top of the string-
4.2.4.3 The handrails shall run parallel to the string up to the third step from the bottom andattached to the string between the second and third step from the bottom.
4.2.4.4 lt shall be possible to grip the handrail on the right hand side horizontally at its upper end.4.2.4.5 The beam is placed on the upper end of the right string and connects both parts of thehandrail with the string on the right hand side.
4.2.4.6 The upper end of the handrails shall lead back downwards so that it forms, at the right handside together with the beam, a hook for attaching the outboard stairs to the vessel’s side, see Figure 1.4.2.5 Spacer
4.2.5.1 The spacer shall be large enough to ensure an inclination angel of 75°+0°/-10°.
4.2.5.2 Where the spacer comes into contact with the vessel’s side, it shall be designed so that thecontact surface is not less than 500 mm wide or the contact points are at least 500 mm apart.
4.2.5.3 The spacer shall be attached to the two strings. lf it is of the folding type, it shall automaticlylock by bringing in its operating position.
4.4 Strength
4.4.1 The steps shall be designed for a rated load of 1,5 kN.
4.4.2 The boarding stair shall be designed for two rated loads of 1,5 kN each, applied simultaneously to the top and bottom steps.
4.4.3 Each handrail shall he able to withstand a force of 0,3 kN applied in any direction.
5 Construction
5.1 Welded construktion
Any connections, except the spacers, shall be welded. The welds on the hollow sections shall he watertight
5.2 Buoyancy
Boarding stairs shall be buoyant.
5.3 Safe tread
The treads of the steps shall be non skid.
5.4 Edges
Boarding stairs shall not have burrs or other sharp points that can lead to injuries.
5.5 Mass
The mass of a boarding stair shall not exceed the values given in Table 1.
5.6 MaterIals
Boarding stairs shall be made of appropriate materials, e.g. aluminium or FRP (fibre reinrorced polymers).
NOTE Examples for suitable semi-Ilnished aluminium products are given in EN 485-1 or EN 754-1.
Exposed surfaces shall be resistant against impact of weather, IJV-rays and oil/fuel or durably protected.
6 TestIng
6.1 General
For boarding stairs produced in series, the test is performed as a type test One hoarding stair shall he selected at random out of a series of maximum of 20.
Requirements which are stated in this document without a special testing method shall be tested by measurement and/or visual inspection, and/or practical function test
6.2 Test of materials
Test of materials shall be made by submitting material certificates.
6.3 Strength test
The boarding stair under test shall be supported by the hooks and held by the spacer at its inclination angle. Before testing the boarding stair shall be fixed to prevent movemeni
Each step shall be loaded in turn for 60s with a 2,5 kN test load.
The top and bottom step shall be loaded simultaneously for 60 s with 2.5 kN test loads.
The handrail on the right hand side shall be loaded for 60 s with a 0,5 kN test load, successively at the upper end and at the midpoint between attachment points. The test load shall be applied both perpendicular to the outboard staircase and in its plane.
On the left handrail on the left hand side, this test shall be carried out only In the centre between the
fixing points.
After removing the loads, there shall be no permanent deformation.
6.4 Buoyancy test
Buoyancy shall be demonstrated by submerging the boarding stair in freshwater.
If air is used to provide buoyancy there shall be no leakage of air from the sealed sections.
7 Designation
Designation of a boarding stair as speci1ed in this standard, having 6 steps (6):
Boarding stair EN 1502—6
8 Marking
Boarding stairs according to this standard shall be marked by means of a manufacturer’s plate.
The manufacturer’s plate shall be weather resistant and permanently and largely protected against damage attached to the Inner side of a string. It shall contain at least the following information:
a) Designation: “Boarding stair EN 1502”;
b) Load: “Permissible load capacity: 2 persons or 150 kg single load;
c) Origin: Name, country and town of the manufacturer and/or supplier;
d) Manufacturing data: Year of manufacture