Plain-English explanations of the technical terms and legislation used in this document.
- Automatic control test
- A check that the machine actually reached the temperature and pressure it was supposed to.
- Autoclave
- A machine that sterilises instruments using pressurised steam.
- Bowie-Dick / Helix test
- Tests that check steam is reaching right into a wrapped or hollow instrument.
- Chemical indicator
- A strip or mark that changes colour when it has been through the right conditions.
- Competent person
- Someone with the training and authority to examine pressure equipment under the safety regulations.
- Cycle record
- The printout or log showing what a sterilising cycle achieved.
- Load release
- A person checking the cycle record and signing to say the instruments may be used.
- Recall
- Contacting patients who may have been affected when a problem is found after the event.
- Traceability
- Being able to link the instruments used on a patient back to a particular sterilisation cycle.
- Type B autoclave
- A steriliser that removes air first, so steam can reach inside pouches and hollow instruments.
- Type N autoclave
- A simpler steriliser suitable only for plain, unwrapped instruments used straight away.
- Vacuum leak test
- A check that the chamber can hold a vacuum without air leaking in.
- Written scheme of examination
- The legally required plan for how and when a pressure vessel such as an autoclave is inspected.