This guide set out in plain English explains all of the footwear safety codes and classifications that you need to know before making a purchase. Look no further. Let's start with this easy-to-understand table according to the EN ISO 20345:2011 standard:
|EN ISO 20345:2011||SB||S1||S2||S3||S4||S5|
(Toe protection, Slip resistance, Outsole strength, Upper tensile Strength etc)
|Resistance to fuel oil||✓||✓||✓||✓||✓|
|Energy absorption of seat region (in heel)||✓||✓||✓||✓||✓|
|Closed seat region (fully enclosed heel)||✓||✓||✓||✓||✓|
|Water penetration & absorption prevention||✓||✓|
|Midsole penetration resistance||✓||✓|
|Waterproofness & leakproofness||✓||✓|
SB means ''Safety Basic'' - the basic safety standard for footwear. As learned from the table, these have basic toe protection against a 200-joule impact and a compression load of 15 kN.
They may also have additional safety features which will be shown via other symbols. For example, if you see SB-P this means that the footwear also has the additional feature of Penetration Resistance of the Midsole.
If you work indoors with no risk of water sprays, and you need protection for your toes, then you will need S1 safety footwear featuring the following levels of protection.
You will want S2 safety boots or shoes if you plan to work outdoors and need toe protection and water penetration resistance. Check the features of S2 footwear:
S3 safety boots/shoes encompass all the same levels of protection as S2's, ideal for those who work outdoors and need protection for their toes, and against perforation and water absorption. Its features include:
S4 footwear has all the protection offered by S1 but also with an entirely moulded polymer/rubber upper such as Dunlop Boots.
Similar to S4 boots, S5 rating is a safety class specifically for all-rubber or all-polymeric footwear. Besides having all the same features of S4's, this class has two added benefits - midsole penetration resistance and cleated outsole.
Next is to choose the level of slip resistance.
It is tempting to choose the highest level of slip resistance for your footwear. Some work, however, may have a lower risk of falls/trips, meaning you may only need a pair of basic anti-slip shoes and shoes with maximum slip resistance may reduce your effectiveness.
There are shoes out there described as ‘slip resistant’ or ‘improved grip performance’ that have not been formally tested. You can be 100% sure the safety footwear is slip resistant when you identify a slip resistant rating SRA, SRB or SRC:
|SRA slip resistant soles||Tested on a ceramic tile wetted with dilute soap solution.|
|SRB slip resistant soles||Tested on smooth steel with glycerol.|
|SRC slip resistant soles||Offer the highest slip resistance protection as they pass both SRA and SRB slip resistance tests.|
As mentioned, besides only displaying a safety boot rating such as SB and S1, additional safety features can be shown via letters. For example, our Dunlop Purofort Thermo + Full Safety Boots are S5 CI CR rated, meaning the boot features addition benefits which are insulation against cold and cut-resistant upper.
Here’s a list of abbreviations that are commonly used.
|P: Midsole Penetration Protection (Resist penetration force of 1100N)||WR: Water Resistance|
|C: Conductive||M: Metatarsal Protection|
|A: Antistatic Protection||AN: Ankle Protection|
|I: Electricity Insulating Footwear||CR: Cut Resistant Upper|
|E: Energy Absorption in the heel region||WRU: Water Resistant Upper|
|HI: Insulation Against Heat (Tested for 30 minutes at 150°C)||HRO: Heat Resistant Outsole (Resist 300°C for 60 seconds)|
|CI: Insulation Against Cold (Tested for 30 minutes at -20°C)||FO: Fuel Oil-Resistant Outsole|
They both offer basic footwear protection, antistatic protection, resistance to fuel oil, energy absorption in the heel. However S3 safety boots additionally offer water penetration & absorption resistance, penetration resistance and cleated outsole.
It means your safety footwear can withstand an impact of 20kg in weight falling on to the toes from a height of 10.2 metres.
Like steel toe footwear, boots with a composite toe cap also meet the EN safety regulation basic requirements of a 200-joule protective toe cap. Also, composite toe caps are usually lighter than steel boots and are completely metal free and therefore do not conduct electricity.
Hazardous work environment vary in nature from greasy or wet floors to random gravel stained paths. In such a case, the stress of protection falls on the head of the workforce trudging round the clock to meet deadlines, project expectations and sustain company aim. That is where safety shoes come in play.
Ron Rose is an owner of MTN SHOP & Mountain Productions and serves as the Global Managing Director. As MD, he has helped thousands of businesses to get their job done safely and effectively by offering useful and practical onsite safety knowledge.