Paper shredder – explosion
- Safety Flash
- Published on 29 August 2023
- Generated on 18 November 2025
- IMCA SF 21/23
- 2 minute read
There was a small explosion in an office paper shredder.
What happened?
The explosion happened after the blades were lubricated to ensure that the paper shredder cutting blades ran smoothly and to prevent paper jams after a period of intensive use.
The method adopted, was to spray WD-40 silicone lubricant onto a sheet of paper, switch on the machine and immediately feed the lubricated sheet through shredder blades.
The heat generated during the shredding process or a spark from the internal motor ignited the WD-40 vapours, which had accumulated inside the shredder collection bin.
This resulted in a small explosion. No-one was harmed; the paper shredder’s plastic bin was destroyed.
before and after views of the paper shredder
What went wrong?
WD-40 silicone spray is classified as a flammable product.
- The office staff did not appreciate the risks associated with using a flammable product.
- The WD-40 silicone lubricant safety data sheet had not been adequately reviewed.
- The use of WD40 silicone lubricant had not been properly risk assessed.
Lessons learned and actions taken
- The paper shredder operating instructions state that “proprietary lubrication sheets” should be used to lubricate the shredder blades – appropriate paper shredder lubrication sheets were purchased.
- Our member reviewed:
- how hazardous substances are selected, used and managed on site.
- manufacturer’s instructions and maintenance requirements for these products, with appropriate safe systems and precautions implemented.
- how hazardous substances are selected, used and managed on site.
- Read, understand and follow manufacturers’ instructions!
- Be aware of the risks of flammable products.
Related Safety Flashes
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IMCA SF 28/22
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IMCA SF 15/20
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IMCA SF 04/09
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IMCA SF 01/03
1 January 2003
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