BS EN 12613:2021 pdf download.Plastics warning devices for underground cables and pipelines with visual characteristics.
This document specifies the material, mechanical and functional (fitness for purpose) requirements for warning devices with visual characteristics manufactured from plastics, intended to indicate the presence of cables and piping systems buried in ground when opening trenches and more generally during digging work
This document also specifies test methods.
This document is applicable to two types of visual warning devices: tapes (type 1) and meshes (type 2).
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
EN 60898-1:2019, Electrical accessories — Circuit-breakers for overcurrent protection for household and similar installations — Part 1: circuit-breakers for a.c. operation (IEC 60898-1:2015, modified)
EN ISO 175, Plastics — Methods of test for the determination of the effects of immersion in liquid chemicals (ISO 175)
EN ISO 846, Plastics — Evaluation of the action of microorganisms (ISO 846)
EN ISO 4892-1, Plastics — Methods of exposure to laborato,y light sources — Part 1: General guidance (ISO 4892-1)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.or/obp
3.1 Type 1 warning device strip manulactured from plastics to warn of the presence of underground cables or pipes during excavation
3.2 Type 2 warning device mesh/net manufactured from plastics to warn of the presence of underground cables or pipes during excavation
4 Material
The material shall be made of any thermoplastic material, e.g. polyethylene (PE) or polypropylene (PP), to which are added those additives necessary for manufacturing warning devices conforming to the requirements of this document.
The use of own or external reprocessed materials or recycled materials shall be permitted for manufacturing warning devices conforming to the requirements of this document.
The material, additives, colour masterbatches and inks for printing, if added, shall have no detrimental effect on the environment.
Environmental, health and safety aspects, as well as the use of regulated substances Ill are to be taken into account for the design process of the products.
5 Requirements
5.1 Colour
The colour of the warning device shall be as agreed between the manufacturer and the purchaser.
5.2 Appearance and colour fastness
The appearance, colouring and marking of the warning device shall not exhibit any change when tested in accordance with 6.2. No discoloration or change of the initial colour shall be permitted. Only a change in surface appearance (e.g. gloss/matt) shall be permitted.
For a given type of warning device (design, width), the colour fastness shall be tested for each colour. 5.3 Dimensional characteristics
5.3.1 General
The nominal width, W0, of the warning device shall be as agreed between the manufacturer and the purchaser.
The dimensional characteristics of the warning device shall be measured by means of:
a) a measuring tape/metal ruler, capable of measuring to an accuracy of 1,0 mm for the width of the warning device;
b) a metal ruler, capable of measuring to an accuracy of 0,5 mm for the internal perimeter of the openings, if relevant;
c) a calliper gauge, capable of measuring to an accuracy of 0,1 mm, for measuring the minimum width of the strands, if relevant.
5.3.2 Type 1 warning devices
Each individual value of the width shall be equal or greater than 50 mm and the outside edges of the warning device shall be straight and parallel.
The deviation of each outside edge, towards outside or inside relatively to the mean line, shall be less or equal to 2 mm.
5.3.3 Type 2 warning devices
The width of the Type 2 warning device shall conform to Table 1.BS EN 12613 pdf free download.