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Knife Safety at Work: Cut Injury Guide

Knife Safety at Work: Cut Injury Guide

Why knife safety matters

Knives are one of the most common tools at work. They are also one of the most dangerous. A single slip can mean a severed tendon, weeks off work and a hand that never fully recovers.

The British Safety Industry Federation (BSIF) is tackling this head on with its campaign, Cutting Out Knife Injuries. As a BSIF Registered Safety Supplier, we are proud to support it. This guide breaks down the campaign's key advice so you can protect your team, from the risk assessment right through to the gloves on their hands.

The numbers behind the campaign

The figures BSIF highlights make the case clearly.

  • Over 10% of major injuries reported to HSE in the food and drink industries come from falling objects or hand knife cuts.
  • 25 to 50% of all lost time accidents in plastics processing are typically caused by hand knives (HSE/Plastics Processors H&S Liaison Committee).
  • 43,000 knife-based reportable workplace accidents were recorded in 2019 (German Social Accident Insurance).
  • 58% of workplace accidents involving manual tools were caused by knives (German Social Accident Insurance).

Whatever your sector, the pattern is the same. Knives cause a large share of preventable injuries.

How knife injuries happen

Most knife injuries follow the same pattern. The blade slips during cutting or trimming and meets the worker's other hand. The result is a laceration to the hand or fingers.

The human cost can last a lifetime. A tendon injury could stop someone playing their favourite sport, riding, or holding a grandchild. In the worst cases, knife injuries are fatal.

The business cost is real too:

  • Lost revenue from time off work
  • Potential litigation
  • Damage to your Corporate Social Responsibility commitments

Time pressure is often the hidden cause. Rushing a job or grabbing whatever blade is nearest is where accidents start.

Start with the hierarchy of controls

Preventing knife injuries starts well before anyone picks up a blade. The hierarchy of controls gives you a clear order to work through, from most to least effective.

  1. Elimination. Remove the need for a knife altogether where possible.
  2. Substitution. Swap knives for safer tools such as scissors or deburring tools.
  3. Engineering controls. Change tooling, moulds or processes to reduce or remove cutting.
  4. Administrative controls. Put a set knife policy in place so cutting tools are properly managed.
  5. PPE. The last line of defence. Cut-resistant gloves, sleeves and garments protect against accidental cuts.

PPE matters, but it should never be the only control. Work down the list first.

Choosing the right safety knife

If your risk assessment shows a knife is still needed, choose a safety knife. HSE guidance groups them into five types, from safest to least safe.

Group

Type

How it protects

1

Bladeless and disposable concealed blade cutters

Blade edge is hidden and there is no blade to change, so replacement injuries are ruled out

2

Concealed blade

Blade edge is shielded from the user, with changeable blades

3

Fully automatic retraction

Blade retracts the moment it leaves the material, without relying on the user

4

Spring-loaded retraction

Blade springs back once the user releases the slider and the blade leaves the material

5

Manual retraction

User must retract the blade by hand. If put down extended, it stays exposed

Check the claims before you buy. Ask the manufacturer for testing or proof behind its safety performance claims.

Know the standards. According to BSIF, there are currently no ISO, CE, UKCA or BSI standards specific to safety knives. The best recognised general product safety mark is the German GS (Geprüfte Sicherheit) mark.

Know the law. In the UK, safety knives fall under the Provision and Use of Work Equipment Regulations 1998 (PUWER). PUWER places duties on businesses whose employees use work equipment, whether the business owns it or not.

Build a safety knife policy

A written policy keeps knife use consistent across your site. BSIF recommends covering eight points:

  1. Elimination
  2. Specifying the right knife
  3. Making spare knives and blades available
  4. Providing safe storage for knives and blades
  5. Specifying the right PPE
  6. Considering the working environment
  7. Developing and delivering training
  8. Checking and monitoring

PPE: matching the glove to the risk

Once the right knife is chosen, PPE is your last line of defence. The key is matching protection to the level of risk.

Score the task. BSIF's quick guide multiplies the risk of a cut (1 to 6) by the severity of the hazard (1 to 5). The higher the score, the higher the cut level you need. For example, a risk of 4 and a hazard severity of 3 gives a score of 12. That points to a Cut D glove. Any glove rated D or above that also performs well on grip, dexterity and comfort is suitable.

Read the EN 388 label. Gloves for mechanical risks carry the EN 388 shield pictogram with a code such as 4X32D. Each character is a test result:

Position

Test

Scale

1

Abrasion

0 to 4

2

Cut (Coupe test)

0 to 5, or X if not tested

3

Tear

0 to 4

4

Puncture

0 to 4

5

Cut (ISO 13997 TDM high cut test)

A to F

Understand the cut letters. The ISO 13997 letter shows the minimum force in newtons needed to cut through the material.

Level

Minimum force

Typical use

A

2 N

Low cut hazard, packing, finishing

B

5 N

Low cut hazard, packing, finishing

C

10 N

Medium cut hazard, handling and assembly

D

15 N

Medium cut hazard, handling and assembly

E

22 N

Highest protection for sharp objects

F

30 N

Highest protection for sharp objects

If in doubt, go higher. A higher rated glove is always preferable, as long as it still gives good grip, dexterity and touch sensitivity.

Cut-resistant PPE is made from high performance yarns such as HPPE, Kevlar, aramids and Dyneema. These are knitted into gloves, sleeves and body protection, often with coatings for extra grip and liquid resistance.

Risk v Hazard: ISO 13997 calculator tool
Risk
6 6 12 18 24 30
5 5 10 15 20 25
4 4 8 12 16 20
3 3 6 9 12 15
2 2 4 6 8 10
1 1 2 3 4 5
Hazard 1 2 3 4 5
Very low Low Med High Very high

N = Newtons of protection

1 or A: 0-2 N B: 3-5 N C: 6-10 N D: 11-15 N E: 16-22 N F: 23-30+ N

Example highlighted: a cut risk of 4 and a hazard severity of 3 gives a score of 12, pointing to a Cut D glove. Source: BSIF.

Choosing gloves for knife work: your checklist

A cut rating alone does not make a glove right for the job. Check each of these:

  • Grip. Secure hold on the knife and the goods being handled.
  • Dexterity. Enough feel to work accurately and safely.
  • Compatibility. Works alongside other PPE such as sleeves, aprons, shirts and coveralls.
  • Oil and liquids. Choose a suitable coating if either is present.
  • Size and fit. A poor fit reduces both protection and control.
  • Other tasks. If gloves come off often, make sure they always go back on.
  • Wear and tear. Replace gloves once they are past their usable life. Worn gloves no longer protect.

Stop and think before every cut

Never compromise on safety, whatever the pressure. Before any cutting job, stop and ask how you will keep your hands safe.

GS Workwear supplies cut-resistant gloves, sleeves and protective clothing for every level of risk. As a BSIF Registered Safety Supplier with ISO 9001 and ISO 14001 accreditation, we can help you specify the right protection for your team. [Get in touch with our team] to find the right fit.

Shop cut resistant gloves here→

Further reading

References

BSIF, Cutting Out Knife Injuries campaign.

Statistics marked German Social Accident Insurance are from its 2020 data.