Cold-Chain Vaccine Refrigerator Install SWMS

Cold-chain vaccine refrigerator installation is the work that installs the dedicated electrical circuit for a purpose-built vaccine or pharmaceutical refrigerator, delivers, positions and connects the unit, and commissions its temperature monitoring and alarm. The dominant hazard, and the one that makes this high risk construction work, is electric shock installing the dedicated circuit and connecting the refrigerator; the work also involves moving and securing a heavy unit and confirming the temperature monitoring at handover. This SWMS covers the dedicated circuit, delivery, positioning, connection and commissioning; it does not cover the refrigerator's sealed refrigerant system, the design of the vaccine storage, or the clinical cold-chain management, which are documented separately.

Under the model Work Health and Safety Act 2011 and the harmonised Work Health and Safety Regulations adopted in each state and territory, this is high risk construction work because the dedicated-circuit installation and connection is work on or near energised electrical services; Victoria operates the equivalent provisions under the Occupational Health and Safety Act 2004 and Occupational Health and Safety Regulations 2017. The dedicated circuit and residual current device follow AS/NZS 3000, any work on a refrigerant circuit would follow AS/NZS 5149, and the temperature monitoring and alarm are commissioned to serve the National Vaccine Storage Guidelines. The work is carried out by a licensed electrical worker.

Failure to meet the primary duty of care is prosecuted under the Category 1 to 3 offences in the Work Health and Safety Act (and the equivalent provisions in Victoria's Occupational Health and Safety Act 2004), with maximum penalties indexed in most jurisdictions, imprisonment available for individuals, and a separate industrial manslaughter offence; current figures follow the prevailing penalty schedule of the responsible state regulator. This document is structured to satisfy the safe work method statement content requirements of the harmonised regulations and documents a controlled circuit installation and commissioning.

Hazards identified

9 hazards covered, sorted by priority.

Control measures

Hierarchy-of-controls order: elimination → substitution → isolation → engineering → administrative → PPE.

1. 1Elimination: Isolate and lock out before work, install a dedicated circuit and residual current device to AS/NZS 3000, test, and use a licensed electrician under permit; use insulated tools.
2. 2Engineering: Use a trolley and mechanical aids for the heavy refrigerator, with two-person handling, a 25 kg single-person limit and a clear path; wear gloves and footwear.
3. 3Engineering: Keep the unit upright with an anti-tip restraint, and level and secure it before loading; wear gloves.
4. 4Elimination: Do not work on the sealed refrigerant circuit, and ventilate where any field work is unavoidable to AS/NZS 5149.
5. 5Engineering: Unpack safely, with housekeeping; wear cut-resistant gloves.
6. 6Engineering: Manage cabling, packaging and data-logger leads with housekeeping; wear safety footwear.
7. 7Engineering: Provide spill control, with housekeeping; wear slip-resistant footwear.
8. 8Engineering: Commission the data logger and alarm, and verify set-points and alarm function against the National Vaccine Storage Guidelines before handover.
9. 9Engineering: Use tested-and-tagged leads and a residual current device, with lead management.

Applicable Codes of Practice

High-Risk Construction Work triggered

Worked example

A contractor is installing a purpose-built vaccine refrigerator in a clinic: a licensed electrician installs the dedicated circuit and the unit is delivered, positioned, connected and its monitoring commissioned. The single thing that makes this high risk construction work is the dedicated-circuit electrical work, so the electrician builds the safe work method statement around de-energised installation. The circuit and a residual current device are installed to AS/NZS 3000 after the board is isolated, locked and tagged, with a test-for-dead before touch and testing of the new circuit before energising, and the connection is made by a licensed electrical worker with insulated tools. The heavy refrigerator is delivered and positioned on a trolley with mechanical aids, two-person handling, a 25 kilogram single-person limit and a clear path, and it is kept upright with an anti-tip restraint and levelled and secured before it is loaded so it cannot tip. The sealed refrigerant system is not worked on, which removes the refrigerant hazard, and ventilation is provided only if any field refrigerant work is unavoidable. Packaging is unpacked safely, cabling and data-logger leads are kept clear, and spill control manages wet floors during commissioning. At handover the temperature data logger and alarm are commissioned and the set-points and alarm function are verified against the National Vaccine Storage Guidelines, so the cold chain is monitored from the moment the unit is in service. Portable leads and equipment on site are tested and tagged and protected by a residual current device. Workers sign on to the statement before starting, the circuit-test and commissioning records are kept, and the signed statement is held on site for the responsible state regulator, and a review is triggered if the unit or the circuit changes.

Related legislation

• Work Health and Safety Act 2011 (harmonised; enacted in all states and territories except Victoria, which applies the Occupational Health and Safety Act 2004), s.19 — Primary duty of care to workers and to other persons at or near the workplace
• Harmonised Work Health and Safety Regulations, section 291 — Defines high risk construction work (Victoria: Occupational Health and Safety Regulations 2017, Part 5.1)
• Harmonised Work Health and Safety Regulations, section 299 — Content and review requirements for a safe work method statement for high risk construction work (Victoria: regulation 327; Tasmania: regulation 312)
• Harmonised Work Health and Safety Regulations, Part 4.7 — Electrical safety: the prohibition on energised electrical work except where de-energising is not reasonably practicable and the prescribed conditions are met (Victoria applies the Occupational Health and Safety Regulations 2017 and state electrical-safety legislation)
• National Vaccine Storage Guidelines — The operational standard the refrigerator and its temperature monitoring and alarm are installed to serve

Frequently asked questions