Tank Lining Application SWMS
NSW — Tank Lining Application. Full task scope, hazards and controls to be authored to Phase 1 standard.
SWMS variants reference your state’s WHS legislation. Instant download after payment.
Tank lining application is the surface preparation and application of protective linings inside storage tanks, pressure vessels and similar enclosures. It is high risk construction work under the WHS Regulation because it is carried out in or near a confined space and generates a contaminated and flammable atmosphere from solvent vapour and abrasive dust (s291), so a SWMS is mandatory (s299). The central hazard is the confined space itself — tanks and vessels are entered through restricted openings, and the lining work fills them with hazards: solvent vapour from the coating builds toward explosive concentration, abrasive blasting depletes oxygen and loads the air with dust, and the coating chemistry includes isocyanate and other respiratory sensitisers. The two problems must be managed at once — ignition-free conditions and explosion prevention for the flammable atmosphere, and air-supplied respiratory protection for the solvent and sensitiser exposure — together with continuous atmospheric monitoring, oxygen control and a rescue capability suited to a coated, slippery interior. The SWMS controls ventilation, ignition sources, atmospheric monitoring, breathing apparatus and rescue to AS 2865, with health monitoring for sensitiser-exposed workers. It is supplied in eight jurisdiction editions, each citing its own Act, Regulation and regulator.
Hazards identified
7 hazards covered, sorted by priority.
Vapour explosion and flash fire inside the vessel (WHS Reg Part 4.3)
Asphyxiation on entry; breach of the confined space entry-permit duty
Respiratory sensitisation and occupational asthma; health-monitoring trigger (WHS Reg Part 7.1)
Explosion in the enclosed space
Delayed recovery and a second casualty
Silicosis; exposure against the RCS standard 0.05 mg/m³
Chemical burns and dermal sensitisation
Control measures
Hierarchy-of-controls order: elimination → substitution → isolation → engineering → administrative → PPE.
- 1Elimination — Coat the component externally or in a controlled facility before installation so internal confined-space lining is avoided
- 2Substitution — Substitute a water-borne or low-VOC, isocyanate-free coating for solvent-borne systems where the specification allows
- 3Engineering — Continuous mechanical ventilation sized to keep solvent vapour well below the lower explosive limit, with the atmosphere monitored throughout
- 4Engineering — Intrinsically safe, explosion-rated lighting and equipment with full static bonding and earthing
- 5Engineering — Continuous oxygen, flammable-vapour and sensitiser monitoring with alarms set to stop work
- 6Administrative — Confined space entry permit to AS 2865 and exclusion of ignition sources while spraying
- 7Administrative — Health monitoring for isocyanate-exposed workers and a coating-specific exposure procedure
- 8Administrative — Trained standby attendant and a rescue plan suited to a coated, slippery interior
- 9PPE — Air-supplied breathing apparatus for blasting and spraying, with a chemical-resistant suit and gloves
- 10PPE — Eye and face protection and anti-static, non-sparking footwear in the flammable atmosphere
Applicable Codes of Practice
Central code — tanks and vessels are entered as confined spaces
Duties for solvent, isocyanate and flammable-atmosphere control
Duties for coating application and overspray
Duties for silica and abrasive surface preparation
Technical basis for confined-space entry, ventilation and rescue
Selection and use of air-supplied breathing apparatus
High-Risk Construction Work triggered
Linings are applied inside tanks and vessels entered through restricted openings.
Solvent vapour and blasting create a contaminated and flammable atmosphere.
Who this is for
- →Tank-lining and industrial-coating applicators
- →Confined-space entry supervisors and standby attendants
- →Petroleum and water storage-tank rehabilitation contractors
- →Coating inspectors entering vessels for QA
- →Occupational hygienists managing solvent and sensitiser exposure
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 6:30 am a lining crew from Sentinel Coatings sets up to reline the interior of a 50,000-litre fuel storage tank. The supervisor treats it as both a confined space and a flammable atmosphere from the start: the tank is isolated and drained, purged, and a forced-ventilation fan sized to hold solvent vapour below the lower explosive limit runs and stays on. All lighting and spray plant inside are explosion-rated and bonded, and a vapour and oxygen monitor is set with alarms. The two applicators are on air-supplied breathing apparatus in chemical suits, and both are on the isocyanate health-monitoring program. A standby attendant holds the permit at the manway with a retrieval system rigged for the slippery interior. During blasting the oxygen reading dips and the dust climbs, so ventilation is increased until readings recover. As spraying intensifies the vapour monitor approaches its alarm point; work pauses, ventilation is boosted, then resumes. When the coat is complete the crew exits, ventilation continues until vapour clears, and re-entry for inspection is authorised only once the atmosphere is re-proven safe.
Related legislation
- WHS Act 2011 (model)
- WHS Regulation 2025
- Confined Spaces Code of Practice
- Managing Risks of Hazardous Chemicals in the Workplace Code of Practice
Frequently asked questions
Is tank lining high risk construction work?
Yes, on two separate triggers. Lining is carried out in or near a confined space under section 291(f) of the WHS Regulation, and the solvent vapour and abrasive dust create an atmosphere that may be contaminated or flammable under section 291(l). Either one alone would make a SWMS mandatory under section 299; together they mean the document has to hold two control regimes at once — explosion prevention for the vapour and air-supplied respiratory protection for the solvent and sensitiser exposure. The SWMS is structured that way rather than treating the tank as an ordinary confined space with paint in it.
Does this cover the abrasive surface preparation as well as the coating?
Yes. Blasting inside the vessel is treated as part of the same job because it drives its own hazards: it depletes oxygen, loads the air with dust, and where the substrate or media contains silica it puts respirable crystalline silica in the breathing zone against the 0.05 mg/m³ standard. The document runs continuous oxygen and flammable-vapour monitoring through both phases, with alarm setpoints that stop work, and requires ventilation to be increased and readings to recover before blasting resumes. Coating application then adds the isocyanate and solvent controls on top.
Can workers use a cartridge respirator inside the tank instead of air-supplied breathing apparatus?
No. Air-supplied breathing apparatus selected under AS/NZS 1715 and 1716 is required for both blasting and spraying inside the vessel. A cartridge or filter respirator offers no protection at all against the oxygen deficiency that blasting and vapour create, and isocyanate breakthrough on a cartridge cannot be detected by smell — by the time an applicator notices, the exposure has already happened. The SWMS pairs the breathing apparatus with a chemical-resistant suit and gloves, eye and face protection, and anti-static, non-sparking footwear appropriate to a flammable atmosphere.
What does the SWMS require for standby and rescue?
A trained standby attendant holds the entry permit at the manway for the whole entry, maintains communication with the applicators, and never enters to attempt a rescue. Retrieval equipment is rigged before entry, and the rescue plan is written for the actual conditions — a coated interior is slippery, the opening is restricted, and a collapsed worker in breathing apparatus is heavy and awkward to extract. The permit and rescue arrangements follow AS 2865 and the Confined Spaces Code of Practice, and the same discipline applies to re-entry after coating: the atmosphere must be re-proven before an inspector goes back in.
What do I receive, and does buying it make us compliant?
You receive an editable Word document, purchased once, supplied in eight jurisdiction editions each citing its own Act, Regulation and regulator, with the hazard register mapped to the hierarchy of control, a pre-start checklist, a worker sign-on register and an incident escalation flow. The document is a planning record, not compliance in itself. You still have to arrange health monitoring for isocyanate-exposed applicators under Part 7.1, issue the confined space entry permit, verify the ventilation actually holds vapour below the lower explosive limit, and consult and sign on the crew before entry.
Document details
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