LPG Bulk Tank Installation (AS/NZS 1596) SWMS
A Safe Work Method Statement for lpg bulk tank installation covering all key hazards, controls and regulatory requirements. This is classified as high-risk construction work under WHS Regulation 2025.
SWMS variants reference your state’s WHS legislation. Instant download after payment.
LPG bulk tank installation covers the installation of bulk LP Gas storage tanks and their associated pipework and regulation — the larger stationary vessels that store LP Gas for commercial, industrial and multi-dwelling supply, as distinct from exchangeable cylinders. It is high-consequence gasfitting work governed by the LP Gas storage standard: the tanks are large stored-pressure vessels of a flammable gas that is heavier than air and pools at low level, and incorrect tank location, separation distance, or installation can lead to a major fire or explosion. This document is written on the basis that bulk LPG tanks are installed by appropriately licensed and competent installers to the LP Gas storage and gas installation standards, with the tank location, separation, regulation and leak testing correct.
Bulk LPG tanks are installed to AS/NZS 1596 The storage and handling of LP Gas, which sets the requirements for the location, separation distances, foundations, restraint, protection and the safety systems of bulk LP Gas storage, together with AS/NZS 5601.1:2022 for the gas installation and regulation downstream of the tank. LP Gas being heavier than air and the large stored volume are the defining hazards — separation distances, ignition-source exclusion and the tank safety systems are critical. This document coordinates the LP-Gas-storage, separation, regulation, leak-testing and ignition-control hazards so the bulk tank is installed safely.
Hazards identified
9 hazards covered, sorted by priority.
Major fire, explosion or asphyxiation from a release of the large stored volume
Fire, explosion or asphyxiation from LP Gas accumulating in low areas
Fire and explosion hazard where the tank is too close to ignition sources or occupied areas
Tank instability or damage from inadequate foundation, restraint or impact protection
Major pressure release from the large stored-pressure vessel
A bulk tank operating without functioning relief and safety systems
Major flash fire or explosion from an ignition source during the work
Excavation collapse and service strikes installing the base and pipework
Crush injury rigging and placing the large heavy tank
Control measures
Hierarchy-of-controls order: elimination → substitution → isolation → engineering → administrative → PPE.
- 1Engineering: locate and install the bulk LPG tank to AS/NZS 1596 — with the required separation distances from buildings, boundaries and ignition sources, the correct foundation, restraint and impact protection, and the tank safety systems — recognising that LP Gas pools at low level.
- 2Engineering: install the downstream regulation, pipework and isolation to AS/NZS 5601.1:2022, sized and configured for the supply.
- 3Administrative: confirm and verify the separation distances and the exclusion of ignition sources around the tank, because the large stored volume of flammable gas is the defining hazard.
- 4Administrative: leak test and pressure test the installation before it is placed in service, confirming it is gas-tight, and commission the system.
- 5Engineering: confirm the tank relief and safety systems are fitted and function, and do not place the tank in service without functioning safety systems.
- 6Administrative: control all ignition sources during the work — no naked flames, no electrical switching, and control of static — and use a gas detector or approved leak-detection fluid rather than a flame for leak finding.
- 7Engineering: control the excavation and civil works for the base and pipework to the excavation Code of Practice with services located first, and rig and place the large tank using rated lifting and engineered methods.
- 8Administrative: ensure the work is carried out and certified by an appropriately licensed gasfitter or plumber under the relevant state or territory gasfitting and plumbing licensing scheme, with a compliance certificate issued where required.
- 9Administrative: all workers must hold a valid White Card (General Construction Induction Training, CPCCWHS1001) before entering any construction workplace, with the gasfitting, plumbing and any confined space competencies and licences required for the work.
- 10Administrative: conduct a daily pre-start toolbox talk covering the day's work, identified hazards, isolations, required PPE and emergency procedures, and record attendance in the consultation section.
- 11Administrative: consult workers and any health and safety representatives on the work and its risks, record the consultation, and keep this document available at the workplace.
- 12PPE: eye protection to AS/NZS 1337.1, hearing protection where required, gloves appropriate to the task, and Class I or Class II safety footwear with protective toecap to AS/NZS 2210.3.
- 13Administrative: review and update this SWMS whenever the work scope changes, after any incident or near miss, when a worker or health and safety representative raises a concern, when new hazards are identified, or at minimum every 12 months.
Applicable Codes of Practice
The LP Gas storage and handling standard for cylinder and tank location, restraint, clearances and low-level pooling.
The prevailing gas installation standard for the regulation, pipework and isolation downstream of the bulk tank.
Trenching and excavation controls including support against collapse, ground assessment and existing services.
Management of the gas and oxidising gases and the fire and oxygen-enrichment hazards.
The risk management process and hierarchy of controls applied to the hazards of the work.
High-Risk Construction Work triggered
Installing the tank base and pipework can require excavation deeper than 1.5 metres, which is high risk construction work requiring a SWMS before the work commences.
This is licensed gasfitting or plumbing work that, in the circumstances described, is high risk construction work — in or near a shaft or trench with an excavated depth greater than 1.5 metres — so a SWMS must be prepared before the work commences, kept readily accessible, reviewed as necessary, and given to the principal contractor if one is appointed. The work is carried out to AS/NZS 5601.1:2022 and, where applicable, the LP Gas, medical gas and pipeline standards, which are called up by the state and territory gas safety legislation, with the excavation, confined space, pressurised-gas-main or work-at-height controls applied as relevant. A failure in this work can cause a major gas release, fire, explosion or patient harm, and breaches of the gas legislation and the primary duty of care under the model WHS Act are actively enforced, with offence categories running from failure-to-comply through to reckless conduct, and the most serious breaches carrying imprisonment for individuals. Body-corporate maxima are substantial and indexed; the current maximum follows the prevailing schedule of the responsible regulator.
Who this is for
- →Licensed and competent bulk LPG tank installers.
- →Gas suppliers and contractors installing bulk LP Gas storage.
- →Industrial and commercial gas installers fitting bulk tanks and regulation.
- →Industrial, commercial and multi-dwelling PCBUs commissioning bulk LPG.
- →PCBU safety managers and supervisors coordinating the LP-Gas-storage, separation and safety-system controls.
What you receive
- ✓Editable Microsoft Word document (.docx) fully compatible with Microsoft Word 2016 and newer, Google Docs, and LibreOffice Writer.
- ✓Title page with editable fields for PCBU name, ABN, site address, project name, principal contractor details, and document revision date.
- ✓Hazard register with the lpg bulk tank installation hazards — each with a documented consequence, inherent risk rating on a 5x5 likelihood-consequence matrix, hierarchy-of-control measures, and residual risk rating.
- ✓Bulk LPG tank installation prompts referencing AS/NZS 1596 and AS/NZS 5601.1:2022, a separation-distance and ignition-source-exclusion section, a tank safety-system and relief section, and a leak-test and commissioning record.
- ✓Licensing and compliance-certificate prompts for the relevant gasfitting and plumbing scheme, the Type B or medical gas certification where applicable, and a respiratory protection selection and fit-test record per AS/NZS 1715 where relevant.
- ✓Worker consultation record per the model WHS Act consultation duty and a worker sign-on register (blank, expandable).
- ✓Applicable legislation and Codes of Practice schedule pre-populated for the model WHS jurisdiction with a state-variance reference table covering the harmonised states, plus Victoria.
- ✓Emergency procedure template and a revision log.
Worked example
A competent bulk LPG installer is engaged to install a bulk LP Gas storage tank to supply a commercial site. The tank is located and installed to AS/NZS 1596, with the required separation distances from buildings, boundaries and ignition sources, the correct foundation, restraint and impact protection, and the tank safety systems, recognising that LP Gas pools at low level. The downstream regulation, pipework and isolation are installed to AS/NZS 5601.1:2022, sized for the supply. The separation distances and the exclusion of ignition sources around the tank are confirmed and verified. The excavation and civil works for the base and pipework are controlled with services located first, and the large tank is rigged and placed using rated lifting. The tank relief and safety systems are confirmed fitted and functioning, with the tank not placed in service without them. The installation is leak tested and pressure tested before service, with ignition sources controlled and a gas detector used for leak finding, and the system commissioned. The installer issues the documentation and retains the records.
Related legislation
- Model Work Health and Safety Act — primary duty of care; the duty to consult workers; the reckless-conduct offence; and notifiable-incident provisions, as enacted in each jurisdiction.
- Model Work Health and Safety Regulations — Section 291 high risk construction work and the SWMS preparation and review duties, and the confined space, excavation and pressurised-gas provisions where applicable, as enacted in each jurisdiction.
- The gas installation standard AS/NZS 5601.1:2022, the LP Gas storage standard AS/NZS 1596, the medical gas standard AS 2896, and the relevant plumbing and drainage standards AS/NZS 3500, are called up by the state and territory gas and plumbing safety legislation, together with the Type B and medical gas certification requirements and the gas network operator's requirements where applicable.
- Gasfitting and plumbing work is licensed under each state and territory's gasfitting and plumbing licensing scheme, with Type B authorisation and medical gas certification required for that work, and compliance certification required for notifiable work.
- Victoria operates under the Occupational Health and Safety Act 2004 and the Occupational Health and Safety Regulations 2017, with the high risk construction work, confined space and excavation provisions applying in place of the model instruments.
Frequently asked questions
What is a bulk LPG tank?
A bulk LPG tank is a larger stationary LP Gas storage vessel for commercial, industrial and multi-dwelling supply, as distinct from exchangeable cylinders. It stores a large volume of LP Gas under pressure, and its installation is high-consequence gasfitting governed by AS/NZS 1596, because the large stored volume of flammable gas presents a major fire and explosion hazard if the tank is incorrectly installed.
Why are separation distances so important for bulk LPG?
The bulk tank stores a large volume of LP Gas, which is heavier than air and highly flammable, so the required separation distances from buildings, boundaries and ignition sources are critical to prevent a major fire or explosion. The separation distances and the exclusion of ignition sources around the tank are confirmed and verified to AS/NZS 1596 as a defining control.
What standard applies to bulk LPG tank installation?
Bulk LPG tanks are installed to AS/NZS 1596, the LP Gas storage and handling standard, which sets the location, separation distances, foundation, restraint, protection and safety systems of bulk storage, together with AS/NZS 5601.1:2022 for the regulation and pipework downstream of the tank. Both standards apply to the installation.
What safety systems does a bulk tank need?
The bulk tank relief and safety systems are fitted and confirmed to function, and the tank is not placed in service without them. The relief and safety systems manage the stored pressure and protect the large vessel, and are an essential part of the installation, verified before the tank is commissioned and placed in service.
Is the bulk LPG installation leak tested?
Yes. The installation is leak tested and pressure tested before it is placed in service, confirming it is gas-tight, with ignition sources controlled and a gas detector used for leak finding, and the system commissioned. On a bulk LPG installation a leak can have major consequences, so the leak and pressure testing is an essential part of the work before the tank is placed in service.