Vessel recycling activities with documented non-release of hazardous waste
Measurement answer
What this metric measures
Reports the share of downstream vessel recycling or decommissioning activities supported by recycling-facility documentation confirming that hazardous wastes were not released into the environment.
Specification
Metric specification
- Result format
- Single value
- Unit
- Percent (%) of vessel recycling activities — source-defined reporting unit
- Reporting basis
- Reporting period
- Aggregation
- Percentage of all vessel recycling activities during the reporting period
- Pillar
- Environmental
- Topic
- Pollution and hazardous waste management
- Controlled domain
- Pollution
- Entity type
- Metric
Reporting boundary
Downstream vessel recycling or decommissioning activities; hazardous wastes as defined in the Hong Kong Convention; confirmation is based on documentation from the recycling facility
Verified source occurrences
Framework coverage
This is one canonical metric. The bindings below show every verified framework occurrence without creating duplicate metric pages. Edition, disclosure, role, and relationship remain source-specific.
- Adopting DisclosureSource evidence
TNFD sector guidance
- Publisher
- Taskforce on Nature-related Financial Disclosures
- Edition
- Final English sector guidance collection through August 2026 (17 documents)
- Requirement
- Not Specified
- Relationship
- Defines Disclosure
- Mapping outcome
- Direct Evidence
- Source locator
- TNFD Additional sector guidance for Marine Transportation, Section 3.2, Table 15, metric MT.C23.0, p. 71. | Source specification: percentage of vessel recycling events where documentation from the recycling facility confirms that hazardous wastes, as defined in the Hong Kong Convention, were not released into the environment during decommissioning. | p. 71, Section 3.2, Table 15, MT.C23.0
- Adopting DisclosureMT.C23.0
TNFD sector guidance
- Publisher
- Taskforce on Nature-related Financial Disclosures
- Edition
- Version 1.0, June 2025
- Requirement
- Conditional
- Relationship
- Maps Source Identity
- Mapping outcome
- Published
- Source locator
- p. 71, Section 3.2, Table 15, MT.C23.0
Value structure
Dimensions and units
- Unit
- Percent (%) of vessel recycling activities — source-defined reporting unit
- Reporting basis
- Reporting period
Unit meaning: Values use Percent (%) of vessel recycling activities under the disclosed TNFD sector-guidance method, reporting period and boundary.
Published dimensions
- Vessel recycling activity or event
- Recycling facility
- Hazardous-waste status under the Hong Kong Convention
- Documentation confirming non-release to the environment
Calculation method
Formula information
- Status
- Specified
- Formula type
- Percentage
Formula
(Number of vessel recycling activities with recycling-facility documentation confirming that hazardous wastes were not released into the environment / Total number of vessel recycling activities) × 100Apply the source-defined TNFD sector-guidance method within the stated reporting boundary. TNFD Marine Transportation metric MT.C23.0 expressly specifies a percentage with the denominator of vessels or vessel recycling activities and requires documentation from the recycling facility confirming non-release of Hong Kong Convention hazardous wastes. It is a standalone reportable outcome rate, not an avoided-pollutant quantity or an emissions metric. No shortlisted existing metric matches its activity-level recycling boundary, documentation-based confirmation method, or percentage value shape.
Variables
| Symbol | Variable | Definition | Unit |
|---|---|---|---|
N_confirmed | Confirmed non-release recycling activities | Number of vessel recycling activities for which recycling-facility documentation confirms that hazardous wastes were not released into the environment during decommissioning. | number of vessel recycling activities |
N_total | Total vessel recycling activities | Total number of vessel recycling or decommissioning activities in the reporting-period population. | number of vessel recycling activities |
Verified sources
Evidence and status sources
Sustopedia checked each record-specific claim directly against primary publisher material. Labels distinguish current measurement authority from future compatibility and corroborative, legal, edition, or method status context. Corroborative evidence can support a stated limitation but cannot establish the core measurement by itself.
Measurement evidence
- Measurement evidenceChecked 30 August 2026
TNFD additional sector guidance collection
- Publisher
- Taskforce on Nature-related Financial Disclosures
- Edition
- Final English sector guidance collection through August 2026 (17 documents)
- Locator
- TNFD Additional sector guidance for Marine Transportation, Section 3.2, Table 15, metric MT.C23.0, p. 71. | Source specification: percentage of vessel recycling events where documentation from the recycling facility confirms that hazardous wastes, as defined in the Hong Kong Convention, were not released into the environment during decommissioning. | p. 71, Section 3.2, Table 15, MT.C23.0
Supports: The official TNFD sector guidance supports the identity, boundary and method basis of “Vessel recycling activities with documented non-release of hazardous waste”.
Open official source
Use with context
Interpretation boundaries
Method disclosures required
Source-edition basis: TNFD sector guidance, Final English sector guidance collection through August 2026 (17 documents).
- Definition of the population of vessel recycling or decommissioning activities included in the denominator.
- Criteria used to determine whether recycling-facility documentation confirms that hazardous wastes were not released into the environment.
- Treatment of activities with missing, incomplete, unavailable or non-confirming documentation.
- Identification of the hazardous-waste definition applied, including its relationship to the Hong Kong Convention.
Record-specific limitations
- The metric measures documented confirmation from recycling facilities rather than independently verified environmental performance.
- Results depend on the completeness, reliability and consistency of recycling-facility documentation.
- The source does not specify treatment of events with unavailable, incomplete or disputed documentation.
Interpret this metric with the stated reporting boundary, period convention, value shape, and unit. Results prepared with different boundaries or conventions may not be directly comparable.
Measurement evidence supports the core record-specific claims described above. Corroborative evidence can support limitations, while compatibility and status sources provide their separately labelled context. None of these cards by itself determines an organisation's legal applicability, filing readiness, assurance status, or compliance conclusion.