RIS-3279-TOM Standard | Arc Flash & Protective Clothing & Standards

Published 30 Jun 2021

Arc Flash & Protective Clothing Standards

RIS-3279-TOM Standard Arc Flash & Protective Clothing Standards


Arc Flash & Protective Clothing Standards

RIS-3279-TOM (formerly GO-RT 3279) is a high visibility standard that only applies to the rail industry in the UK, as opposed to the EU-Wide nature of other EN standards. The aim is to ensure that rail workers on or near the trackside are sufficiently visible to trains approaching at speed or any other traffic.

Thorne & Derrick provide competitive prices and fast delivery for the complete range of arc flash clothing and accessories designed to protect people and save lives.

View further information about Arc Flash Clothing Standards.

RIS-3279-TOM | Standard Overview

Protective clothing. Electrostatic properties. Material performance and design requirements.

High visibility clothing is the fundamental principle behind the UK Rail Industry Standard. This is based on the European Norm EN 20471:2013, and garments must comply to Class 2 High Visibility, the middle of a three class range. The standard states the following: ‘high visibility clothing worn by people on the lineside or on or near the line should conform to a single standard for the colour and luminance of background material and that this standard will accord with the detail contained within BS EN 20471:2013 high visibility clothing – Test methods and requirements (ISO 20471:2013).’

Stated in the standard is that: ‘the colour specific requirements within this standard conform to the range specified within BS EN 20471 clause 5.1.2.’ In order to confine this to a specific orange colour, and to prevent the selection of a colour at the red end of the spectrum, the precise chromaticity co-ordinates for the colour are specified as: Fluorescent orange, X:0.588, Y:0.371. with a luminance factor of at least 0.4. The accepted tolerance in colour is as laid out in EN 20471. However, there is no tolerance for the luminance factor.

Also stipulated in RIS-3279-TOM is the need of retro-reflective materials, with photometric and physical performance aligned with EN 20471.

Mentioned in RIS-3279-TOM is the accepted use of a mini vest where the nature of the work being carried out will not obscure the high visibility clothing, and thus reduce the surface area’ that is visible. The same applies to company logos; these are permitted where they do not compromise the surface area of background colour, and compensation may have to be made for this.

➡ Standards | BS EN 1149-5 | IEC 61482-2 | BS EN ISO 11611 | BS EN ISO 20471| BS EN ISO 14116 | BS EN ISO 11612 | BS EN 13034 | BS EN 342 | BS EN 14404 | BS EN 343 | HSG47

Arc Flash Polo Shirt Category 1 Hi Vis Orange RIS-3279-TOM

Hi vis and Flame Resistant polo shirt in unique VXS+ blend of fibres developed to meet the requirements of RIS-3279-TOM for workers on or near the trackside.

Arc Flash Clothing With RIS-3279-TOM Approvals

The ProGARM® Hi-Vis Orange Collection features a range of 100% VXS+ inherent garments tested for minimal shrinkage, low colour washout and for long-standing protection against Arc Flash incidents. All garments are certified for use in Rail environments with the Rail Industry Standard, RIS-3279.

With a comprehensive range of arc workwear for both Men and Women, and with the ProGARM lifetime-seam guarantee, you can be confident of long-lasting protection.

Arc Clothing part number                                            Cal Rating

Lightweight Arc Waterproof Jacket | ProGARM 9422 25 Cal
Lightweight Arc Waterproof Trouser | ProGARM 9622 25 Cal
Ladies Arc Polo Shirt | ProGARM 5292 6 Cal
Ladies Arc Coverall | ProGARM 4692 8 Cal
Ladies Arc Flash Trouser | ProGARM 4614  8 Cal
Arc Flash Jacket | ProGARM 4608 10 Cal
Arc Coverall | ProGARM 4690 8 Cal
Arc Flash Trouser | ProGARM 4616 8 Cal
Waterproof Salopette | ProGARM 9660 47 Cal
Arc Waterproof Jacket | ProGARM 9440 47 Cal
Arc Polo Shirt | ProGARM 5290 6 Cal
Arc Sweatshirt | ProGARM 5648 21.6 Cal


➡ Contact Thorne & Derrick for further information about the above arc flash garments with RIS-3279-TOM approvals.


Clothing & Garments

Protecting Workers Against the Dangers of Arc Flash

Thorne & Derrick stock and supply the most extensive range of Arc Flash PPE, Clothing & Protective Garments – should you require any further information, sample garments for field test and trial or a quotation please do not hesitate to contact us.

Arc Flash Trousers Category 2 10 Cal Hi Vis Orange Arc Flash Trousers Category 2 9 Cal Arc Flash Trousers Category 2 9.5 Cal Arc Flash Lineman Coverall Category 2 9.5 Cal
ProGARM 4690 Coverall ProGARM 4616 Trouser ProGARM 5816 Trouser ProGARM 7638 Trouser ProGARM 6458 Coverall
Arc Flash Trousers Category 2 9.5 Cal Hi Vis Yellow Arc Flash Coveralls Category 2 9.5 Cal Hi Vis Yellow Arc Flash Polo Shirt Category 1 Hi Vis Orange Arc Flash Coveralls Category 2 12 Cal Arc Flash Polo Shirt Category 1 Hi Vis Yellow
ProGARM 7418 Trouser ProGARM 7480 Coverall ProGARM 5290 Polo Shirt ProGARM 6444 Coverall ProGARM 5286 Polo Shirt

Thorne & Derrick International supply arc flash clothing and protection equipment including coveralls, gloves, helmets, face shields and general head-to-toe PPE is used to protect against flashover – complete range of insulating matting is also available for worker protection when exposed to energised electrical switchgear and transformers.

Typical applications include LV, HV & EHV cable jointing and terminating, fuse pulling, switchgear commissioning, racking circuit breakers, electrical switching and live working on medium and high voltage electricity networks.

T&D are national distributors LV, MV & HV Cable Installation, Jointing, Substation & Electrical Equipment – we service UK and global businesses involved in cable installations, cable cleating, cable jointing, substation, overhead line and electrical construction at LV, 11kV, 33kV and EHV.

Since 1985, T&D have established an international reputation based on SERVICE | INTEGRITY | TRUST.

Electrical Safety Equipment & Cable Accessories for the Maintenance of Low, Medium & High Voltage Power Systems

Electrical Safety Equipment & Cable Accessories for the Maintenance of Low, Medium & High Voltage Power Systems