Hydrogen release incidents, near misses and corrective actions
Measurement answer
What this metric measures
Reports detected hydrogen-release incidents and near misses at green hydrogen and e-fuel production facilities, the share resulting in corrective actions, and the criteria used to determine reportability.
Specification
Metric specification
- Result format
- Structured table
- Unit
- count; % — source-defined reporting unit
- Reporting basis
- Reporting period used by the reporting organization.
- Aggregation
- Count detected reportable hydrogen-release incidents and near-miss events; calculate the corrective-action proportion using reportable events as the denominator.
- Pillar
- Environmental
- Topic
- Process safety and hydrogen releases
- Controlled domain
- Pollution
- Entity type
- Metric
Reporting boundary
Green hydrogen and e-fuel production facilities included in the reporting boundary.
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, Page 121, Additional sector metrics table, metric AF.A23.5 | Source evidence: number of detected hydrogen-release incidents and near-miss events, proportion leading to corrective actions, and criteria or thresholds defining reportable events. | Page 121, Additional sector metrics table, AF.A23.5
- Adopting DisclosureAF.A23.5
TNFD sector guidance
- Publisher
- Taskforce on Nature-related Financial Disclosures
- Edition
- Version 1.0, June 2026
- Requirement
- Recommended
- Relationship
- Maps Source Identity
- Mapping outcome
- Published
- Source locator
- Page 121, Additional sector metrics table, AF.A23.5
Value structure
Dimensions and units
- Unit
- count; % — source-defined reporting unit
- Reporting basis
- Reporting period used by the reporting organization.
Unit meaning: Values use count; % under the disclosed TNFD sector-guidance method, reporting period and boundary.
Table fields and units
- Facility
- Event type
- Number of detected reportable events
- Number of events resulting in corrective action
- Events resulting in corrective action (%)
- Reportability criteria or threshold
Published dimensions
- Facility
- Event type: hydrogen release incident or near-miss event
- Reportability status
- Corrective-action status
- Reportability criteria or threshold
Disclosure method
Formula information
- Status
- Not applicable
- Formula type
- Structured Disclosure
Disclosure form
No single formulaReport the source-defined result with its stated fields and method disclosures. AF.A23.5 requires a linked multi-field outcome: event counts, the proportion resulting in corrective action, and the criteria governing reportability. The fields form one structured reporting metric and should not be reduced to an incident count alone.
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, Page 121, Additional sector metrics table, metric AF.A23.5 | Source evidence: number of detected hydrogen-release incidents and near-miss events, proportion leading to corrective actions, and criteria or thresholds defining reportable events. | Page 121, Additional sector metrics table, AF.A23.5
Supports: The official TNFD sector guidance supports the identity, boundary and method basis of “Hydrogen release incidents, near misses and corrective actions”.
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).
- Criteria and thresholds used to identify reportable hydrogen-release incidents and near-miss events.
- Definition of a detected event.
- Definition of a corrective action and the point at which an event is considered to have led to corrective action.
- Facilities and production activities included in the reporting boundary.
Record-specific limitations
- Counts depend on detection, recording and the organization's stated reportability criteria.
- The corrective-action percentage is not comparable where reportability thresholds, incident definitions or corrective-action definitions differ.
- Near misses and incidents must not be combined without retaining their event-type distinction.
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.