The asset retirement and final closure division of the AGL Asset Lifecycle Guide. This is the point where an asset that has reached the end of its useful lifecycle is formally removed from service, isolated, de-energized, removed, disposed of or recycled, documented, and closed in the asset register.
The principle this division answers — Asset replacement is not complete when the new asset is installed; the lifecycle is complete only when the old asset has been safely decommissioned, appropriately disposed of or recycled, and formally closed in the asset-management records.
Division 20 connects directly with Division 06 (Installation & Asset Handover), Division 12 (Lifecycle Cost Management), Division 13 (Spare Parts & Inventory Lifecycle), Division 16 (Refurbishment & Life Extension), Division 18 (Obsolescence Management) and Division 19 (Replacement Planning & Decision Making). It is the final physical and administrative stage of the asset lifecycle.
Decommissioning should be planned before physical removal begins.
Before removal, the asset must be safely isolated from all relevant energy and operational sources.
The isolation process should integrate with the airport's approved LOTO and electrical-safety procedures.
De-energization confirms that the equipment has been made electrically safe for removal.
Particularly important where equipment forms part of an energized series circuit or is connected to CCR-controlled circuits.
Asset removal should be controlled so that the removal process does not unintentionally damage retained infrastructure.
Cable removal requires particular planning because cables may be installed underground and may be associated with active circuits.
The decommissioning decision should establish whether a redundant cable is to be removed, abandoned in place, isolated, or otherwise controlled, according to the applicable engineering and environmental requirements.
Isolation transformers should be managed according to their construction, condition and applicable disposal requirements.
Particular attention should be given to the transformer construction and any potentially regulated or hazardous materials.
The decision should be documented.
Where practical, separate recoverable materials from general waste.
PAPI systems may contain multiple components requiring separate handling.
The disposal record should identify the complete PAPI asset and its associated components.
CCR decommissioning requires controlled handling because the equipment is part of the AGL power/control system.
Electronic components should be handled through the applicable e-waste management process.
Electronic equipment should not automatically be treated as ordinary waste. The applicable legal and environmental requirements should determine the approved disposal/recycling route.
AGL equipment can contain significant quantities of recoverable metals.
Before disposal, evaluate whether useful materials or components can be recovered.
Recovered items should only be returned to inventory after appropriate inspection, identification and acceptance.
Decommissioning should consider the environmental impact of the activity.
Minimize:
Maximize (where technically and legally appropriate):
Some equipment or components may contain materials requiring controlled handling.
The specific classification and disposal requirements should be determined from the applicable Indian environmental and hazardous-waste requirements rather than assumed.
Every significant decommissioning activity should have a documented disposal trail.
The asset register must be updated after physical decommissioning.
The old asset record should not simply be deleted. It should remain available as historical lifecycle information.
Disposal records provide evidence that the retired asset was properly managed.
Where materials are recycled, the outcome should be recorded.
This allows the airport to demonstrate the lifecycle outcome of retired assets.
Final closure is the formal completion of the asset lifecycle.
The 20 topics kept exactly as the retirement-and-closure structure, each mapped to the primary question it answers.
| No. | Topic | Primary Question |
|---|---|---|
| 01 | Asset Decommissioning Planning | What is the plan before physical removal begins? |
| 02 | Equipment Isolation | Is the asset isolated from all energy sources? |
| 03 | De-Energization | Has the equipment been made electrically safe? |
| 04 | Asset Removal | How is the asset physically removed? |
| 05 | Cable Removal | Should the cable be removed, abandoned, or retained? |
| 06 | Transformer Disposal | How is the transformer disposed of? |
| 07 | Fixture Disposal | Reuse, recover, recycle, or dispose? |
| 08 | Sign Disposal | How are sign materials and components recovered? |
| 09 | PAPI Disposal | How are PAPI components handled? |
| 10 | CCR Disposal | How is the CCR decommissioned? |
| 11 | Electronic-Waste Management | What is the approved e-waste route? |
| 12 | Metal Recycling | What metals can be recovered? |
| 13 | Material Recovery | What components or materials can be reused? |
| 14 | Environmental Considerations | What is the environmental impact? |
| 15 | Hazardous-Material Considerations | Does the asset contain regulated materials? |
| 16 | Disposal Documentation | Is there a documented disposal trail? |
| 17 | Asset-Register Closure | Has the register been updated to closed? |
| 18 | Disposal Records | Is there evidence of proper disposal? |
| 19 | Recycling Records | Is there evidence materials were recycled? |
| 20 | Final Asset Closure | Is the lifecycle formally closed? |
The mandatory outputs of Division 20.
Before any asset or material is sent to disposal, the decision should work down through a fixed hierarchy — not default straight to disposal.
Reuse → Recover → Recycle → Dispose — subject to technical suitability, safety and applicable environmental requirements.
The old asset record should never simply be deleted once closed. The asset lifecycle does not end at replacement. It ends only after the old asset has been safely decommissioned, its materials/components have been appropriately reused, recovered, recycled or disposed of, all required records have been updated, and the asset has been formally closed in the lifecycle management system.
Quick answers about Decommissioning, Disposal & Recycling in the AGL Asset Lifecycle Guide.
Division 20 is the asset retirement and final closure division. It covers 20 topics on decommissioning planning, isolation, de-energization, removal, disposal, recycling, hazardous materials, and asset-register closure.
Decommissioning should be planned before physical removal begins. The plan covers asset identification and location, the reason for decommissioning, any replacement asset and the decommissioning scope.
Before removal the asset must be safely isolated from all relevant energy and operational sources, including electrical and control supply, communication connections and connected circuits. De-energization confirms the equipment is electrically safe for removal, including verifying the absence of hazardous voltage.
Cables may be installed underground and may be associated with active circuits. Planning covers cable identification, circuit association, route, active or inactive status and whether removal is required.
Division 20 has dedicated topics for transformer, fixture, sign, PAPI and CCR disposal. Each is managed according to its construction, condition and applicable requirements, and PAPI systems and CCRs contain multiple components needing controlled, separate handling.
Electronic components such as LED drivers, control modules and PLC components should go through the applicable e-waste process. AGL equipment can contain significant recoverable metals such as copper, aluminium, steel, stainless steel and brass, and before disposal useful components should be evaluated for recovery.
Decommissioning should consider environmental impact including waste generation, electronic waste and metals. Some equipment may contain materials needing controlled handling, such as oils or fluids, batteries, contaminated materials or legacy materials.
Every significant decommissioning should have a documented disposal trail, with disposal and recycling records as evidence. The asset register must be updated with dates, disposal method and final condition, and final asset closure is the formal completion of the lifecycle.
Effective AGL asset management starts with closing an asset's record as carefully as it began.
Learn how decommissioning planning, equipment isolation, disposal, recycling and asset-register closure connect across the complete AGL asset lifecycle.
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