Clinical Sterilisation (CSSD) SWMS
Central sterile services department (CSSD) reprocessing operations — manual pre-clean, ultrasonic and washer-disinfector operation, steam autoclave, ethylene oxide and peracetic acid sterilisation, aeration, load-release biological indicators and sharps-handling protocols.
SWMS variants reference your state’s WHS legislation. Instant download after payment.
Clinical sterilisation work in a Central Sterile Services Department (CSSD) covers the full reprocessing cycle for reusable medical devices: manual pre-cleaning of contaminated instruments, ultrasonic and washer-disinfector operation, steam autoclaving, low-temperature ethylene oxide (EtO) and peracetic acid sterilisation, post-process aeration, and biological indicator load release. These tasks expose technicians to Schedule 11 hazardous chemicals, sharps, bloodborne pathogens, high-pressure steam, and thermal burns, triggering duties under Model WHS Regulations Part 7.1 (Hazardous Chemicals) and Part 4.1 (Noise/Plant). Because EtO is a Schedule 10 carcinogen with a SWA Workplace Exposure Standard of 1 ppm TWA, and peracetic acid has a 0.4 ppm STEL, this work falls within the High Risk Construction-equivalent chemical handling regime. A documented Safe Work Method Statement is mandatory under WHS Reg 2025 s299 before any reprocessing cycle commences, must be signed by every worker, and retained for the life of the chemical register plus two years.
Hazards identified
7 hazards covered, sorted by priority.
Acute mucosal irritation, CNS depression, confirmed Group 1 carcinogen — leukaemia and lymphoma risk on chronic exposure above WES
Severe respiratory tract corrosion, pulmonary oedema, chemical conjunctivitis and permanent corneal scarring at concentrations above STEL
Bloodborne pathogen transmission including HIV, hepatitis B and C, requiring post-exposure prophylaxis and serological follow-up
Full-thickness thermal burns to face, hands and forearms requiring skin grafting and extended workers compensation claim
Occupational asthma, allergic contact dermatitis and irreversible respiratory sensitisation — worker may be permanently unfit for CSSD duties
Cumulative cervical, lumbar and upper-limb musculoskeletal disorders leading to chronic pain and reduced workforce capacity
Fractures, lacerations and secondary exposure to bloodborne pathogens when impacting contaminated surfaces or sharps containers
Control measures
Hierarchy-of-controls order: elimination → substitution → isolation → engineering → administrative → PPE.
- 1Elimination — Replace ethylene oxide sterilisation with steam autoclaving wherever device material compatibility (AS/NZS 4187 Table 7.2) permits, eliminating Schedule 10 carcinogen exposure entirely.
- 2Elimination — Procure single-use disposable instruments for high-risk procedures (e.g. prion-implicated neurosurgery) to remove manual reprocessing of contaminated devices from the workflow.
- 3Substitution — Substitute glutaraldehyde high-level disinfection with peracetic acid automated endoscope reprocessors, reducing sensitisation risk per SWA Hazardous Chemicals Code of Practice section 4.
- 4Substitution — Replace manual brushing of lumened instruments with enzymatic foam pre-treatment plus automated ultrasonic cleaning, reducing sharps and aerosol exposure.
- 5Engineering — Install dedicated local exhaust ventilation (minimum 0.5 m/s capture velocity) at autoclave doors, EtO chamber, and aeration cabinets per AS/NZS 4187 clause 7.4.2.
- 6Engineering — Fit interlocked EtO chamber door with continuous photoionisation detector alarmed at 0.5 ppm, automatically purging chamber and isolating supply on detection.
- 7Administrative — Conduct atmospheric monitoring for EtO and peracetic acid quarterly per SWA WES Guidance, maintain results in health monitoring register, and rotate technicians to limit cumulative exposure.
- 8Administrative — Implement documented sharps pre-clean protocol with puncture-resistant trays, one-handed instrument transfer, and immediate sharps register entry per AS/NZS 4187 clause 6.3.
- 9PPE — Issue chemical splash goggles, fluid-resistant gown, cut-level 5 nitrile gloves and P2 respirator for manual pre-clean; upgrade to full-face supplied-air respirator for EtO chamber entry.
- 10PPE — Provide heat-resistant aramid gauntlets rated to 250°C and face shield for autoclave unloading, with mandatory cool-down delay of 15 minutes before chamber access.
Applicable Codes of Practice
Mandates validated cleaning, disinfection and sterilisation processes, environmental controls, and competency requirements for all CSSD reprocessing activities.
Requires SDS register, exposure monitoring, health surveillance for EtO and peracetic acid, and SWMS for chemicals exceeding Schedule 11 thresholds.
Prescribes hierarchy of control application, atmospheric monitoring frequency and emergency response planning for Schedule 10 carcinogens including ethylene oxide.
Governs containment, PPE and decontamination requirements when handling instruments contaminated with Risk Group 2 and 3 biological agents during pre-clean.
High-Risk Construction Work triggered
CSSD reprocessing routinely uses ethylene oxide (carcinogen), peracetic acid (corrosive), and glutaraldehyde (sensitiser) at concentrations exceeding Schedule 11 manifest quantities, triggering Schedule 1 category 10.
PCBU must prepare SWMS before work starts, consult affected workers under s47–49, retain signed records for two years post-incident or for the chemical register lifetime — penalties are substantial and indexed; current maximum follows the prevailing WHS schedule.
Who this is for
- →CSSD technicians in public and private hospitals
- →Infection prevention and control coordinators
- →Day surgery and endoscopy unit reprocessing staff
- →Sterilisation services managers in dental and veterinary clinics
What you receive
- ✓Editable DOCX template — Microsoft Word compatible
- ✓State-specific WHS legislation schedule (NSW/VIC/QLD/SA/WA/TAS/NT/ACT)
- ✓Hazard register with risk ratings + hierarchy-of-control mapping
- ✓Worker sign-on register, pre-start checklist, and incident escalation flow
Worked example
At a 240-bed metropolitan private hospital, a CSSD technician arrives for the 0630 shift to find an overnight EtO cycle still in aeration. The shift supervisor opens the pre-start brief by tabling this SWMS alongside the chemical register and the previous shift's atmospheric monitoring log. Working through the hazard register, the team identifies that EtO vapour release during chamber unload is the highest-priority hazard for the morning's tasks. The SWMS directs them to confirm the photoionisation detector reads below 0.5 ppm, verify the local exhaust ventilation is drawing at capture velocity, and stage full-face supplied-air respirators before approaching the chamber. Each technician signs the SWMS sign-on register, noting their respirator fit-test currency and health surveillance date. Mid-task, the detector alarms at 0.8 ppm during chamber door cracking. Following the administrative control sequence documented in the SWMS, the technician immediately closes the door, initiates a second purge cycle, evacuates the room, and notifies the supervisor. The SWMS is annotated with the deviation, the incident is logged in the hazardous chemicals incident register per WHS Reg 2025 s38, and atmospheric monitoring is repeated before reprocessing resumes. The signed SWMS, alarm log and monitoring results are filed together for the statutory retention period.
Related legislation
- WHS Act 2011 (model)
- WHS Regulation 2025
- Code of Practice — Hazardous Manual Tasks