Tank Cleaning Checklist

Use this Tank Cleaning Checklist to plan isolation, verify permits, manage hazards, confirm PPE, and document safe, compliant tank cleaning work practices.

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Tank Cleaning Checklist



Isolation And Permits

1. Safety data sheets for the last stored product have been reviewed


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2. Chemical hazards and neutralizing agents for the residue are identified


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3. The tank is isolated by double block and bleed or physical blinding


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4. Every blind installed is recorded on a blind register


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5. Lockout and tagout is applied to all connected equipment and agitators


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6. A confined space entry permit has been issued for the work


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7. A hot work permit is in place where spark-producing work is planned


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8. The tank is electrically grounded and bonded against static discharge


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Atmospheric Monitoring And Gas Testing

1. Gas detection equipment has been bump tested or calibrated before use


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2. Oxygen concentration is within the safe range before entry


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3. The atmosphere is below the lower explosive limit before entry


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4. Toxic gas concentrations are below exposure limits before entry


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5. Readings are taken at top, middle and bottom levels of the tank


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6. Monitoring continues throughout the work rather than before entry only


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7. Forced ventilation is running and discharging to a safe location


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Confined Space Entry And Rescue

1. A trained attendant is stationed at the entry point at all times


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2. The attendant maintains continuous communication with entrants


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3. An entry log records who is inside the tank and when


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4. Non-entry retrieval equipment is rigged and attached to each entrant


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5. Rescue arrangements are confirmed available before entry begins


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6. Respiratory protection suited to the atmosphere is worn and fit tested


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7. Explosion-proof lighting and non-sparking tools are in use inside the tank


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8. Tools taken into the tank are counted in and counted out


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Product Removal And Sludge Management

1. The heel has been pumped down to the lowest level achievable


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2. Sludge is removed by mechanical scraper or vacuum unit


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3. Pyrophoric deposits are kept wet until removed from the tank


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4. Waste is contained in approved containers and manifested for disposal


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5. Chemical wash agents are compatible with the tank lining and previous product


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6. Wash water is captured rather than released to surface drainage


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7. Wash water is routed to a permitted treatment facility


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Internal Surface And Component Cleaning

1. Baffles, heating coils and agitator blades are cleaned of residue


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2. The sump and low point drains are clear of solid deposits


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3. The roof underside and support columns are cleaned of vapor-phase deposits


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4. Internal liners and coatings are inspected for blistering, peeling and thinning


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5. Floating roof seals and legs are cleaned and inspected where fitted


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6. Nozzles, manways and internal pipework are clear


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Mechanical Inspection And Testing

1. Non-destructive testing of the floor and shell has been carried out


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2. Pitting and corrosion found is recorded with its location and depth


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3. Internal welds are visually inspected for cracks and stress failures


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4. The pressure vacuum vent and thief hatch are cleaned and tested for seal and spring tension


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5. Secondary containment is free from cracks, standing water and debris


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6. Cathodic protection is inspected where fitted


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Recommissioning

1. The tank is dried by forced air where the next product requires it


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2. A gas-free certificate is issued by a qualified competent person


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3. The tank is confirmed product-clean against the specification for its next service


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4. Every blind on the register has been removed and signed off


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5. Gaskets and seals are replaced with new items compatible with the next product


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6. All tools, equipment and materials have been removed from the tank


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7. Lockout and tagout devices are removed and the system returned to service


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8. The entry permit is formally closed and signed


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Checklist by GoAudits.com – Please note that this checklist is intended as an example. We do not guarantee compliance with the laws applicable to your territory or industry. You should seek professional advice to determine how this checklist should be adapted to your workplace or jurisdiction.

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