Hazardous & Emergency Response Sector Standard

Foreword. This is the sector standard for the Hazardous & Emergency Response (HAZ) application sector. It instantiates the universal sector template (VRS-GEN-002 §6.4). A Hazardous & Emergency Response Application Rating expresses, as a letter C < B < A < AA < AAA (AAA best), how suitable and safe a robot model is for use in extreme environments — above the mandatory compliance floor: a model may be fully compliant with the anchor regimes of Clause 2 and still receive any letter. VRS does not replace those regimes; it discriminates among compliant models. The defining condition of the sector is the extreme environment: the robot exists precisely because the environment is too dangerous for people, so failure tolerance is low, recovery may be impossible, and the robot itself must not become the ignition source or the contamination path. The rating is built so that an insurer or lender can read frequency, severity, exposure, recoverability, residual value, and correlated-cyber risk from evidence a manufacturer already produces for CE / UL / ISO / IECEx conformity (Clauses 7–8). Anchors were verified against issuing-body pages on 2026-09-11, with the IEC 60079-0 explosive-atmosphere anchor re-verified 2026-09-12 (Bibliography). Numeric thresholds are not set here; they live inside the criterion rungs of VRS-HAZ-201 and its data twin (VRS-HAZ-501). A Hazardous & Emergency Response AR is an opinion, not a certification, and no display implies a real robot holds a Veyrum rating (VRS-GEN-006 §10). Requirements use “shall”; recommendations use “should”.

1 Scope

This Standard defines the requirements for issuing a Hazardous & Emergency Response AR for robots operating in extreme environments: explosive atmospheres (oil/gas/chemical), radiological environments, explosive-ordnance disposal (EOD), firefighting, and search-and-rescue. Its clauses follow the universal sector template (VRS-GEN-002 §6.4).

The scoring mathematics are excluded (VRS-GEN-005/006; the sector’s scoring content lives in VRS-HAZ-201 with its data twin VRS-HAZ-501). Boundary with adjacent sectors: routine outdoor inspection without extreme-environment exposure is rated under VRS-FLD-001; flying platforms under VRS-AER-001; underwater platforms under VRS-MAR-001; military and adversarial missions under VRS-DEF-001. Robot form is not a sector (VRS-GEN-001 §3.4.3): any form — arm, tracked vehicle, quadruped, or aerial platform — is rated under HAZ by this Standard when Clause 4 holds.

2 Normative references

The documents below constitute requirements of this Standard where cited. VRS documents are dated at the point of assessment unless stated otherwise.

• VRS-GEN-001, Vocabulary; VRS-GEN-005, IR Methodology; VRS-GEN-006, AR Scheme; VRS-GEN-007, Sector Classification; VRS-GEN-009, Passport & Registry Schema; VRS-GEN-012, Evidence & Data Requirements (evidence grades).
• VRS-HAZ-201, Hazardous & Emergency Response AR Assessment Protocol (scoring; dated at assessment); its data twin is VRS-HAZ-501.
• VRS-GEN-008, Application of Ratings (issued-rating lifecycle). Cold-start parity and the company-wide fallback are defined in VRS-GEN-005 §6; the letter bands in VRS-GEN-006 §4.
• Anchor regimes (verified 2026-09-11) — anchors and evidence lanes, not conformity floors VRS re-certifies (VRS-GEN-001 §3.5.1, §3.6.3–3.6.4); the ISO 8373:2021 term basis is cross-referenced in Clause 3:
  • ATEX Directive 2014/34/EU (recast; applicable from 20 April 2016) — EU essential health & safety requirements and Notified-Body conformity route for explosive-atmosphere equipment (equipment groups and categories keyed to zone). Safety-floor anchor for the explosive-atmosphere class in EU markets.
  • IEC 60079-0:2026 (Edition 8.0; published 2026-06-16, cancelling and replacing Edition 7.0:2017 as a technical revision) — Explosive atmospheres — Part 0: Equipment — General requirements, certified internationally through the IECEx scheme and commonly run alongside ATEX as one project. A valid certificate to the superseded Edition 7.0:2017 remains acceptable H1 evidence until re-certification (VRS documents are dated at the point of assessment; §2).
  • UL 121201 (9th edition, 2017; harmonised with CSA C22.2 No. 213-17) — US nonincendive equipment for Class I/II Division 2 and Class III hazardous (classified) locations. US route for H1 where ATEX/IECEx is not the market regime.
  • IEC 60529:1989+AMD2:2013 (IP Code) — degrees of protection provided by enclosures; ingress-protection evidence lane for H3 environmental attrition.
  • ASTM E2853/E2853M-22 and the DHS-NIST-ASTM E54.09 (Homeland Security Applications; Response Robots) test-method suite (incl. ASTM E2566-17a, response-robot sensing) — harmonised, quantitative capability-measurement methods for the eod, fire, and search-rescue classes.
  • IEC 62443-4-2:2019 — technical security requirements for IACS components (security levels SL-C against foundational requirements FR1–FR7); operator-link cyber evidence lane for H4.
  • Radiological, EOD, and firefighting mission-domain requirements (nuclear-site licensing, EOD procurement specs, firefighting-apparatus norms) are per-programme and shall be recorded at assessment. For the fire class the recognised US firefighting-apparatus construction/performance norm is NFPA 1900, 2024 edition (effective 2024-01-01; consolidating NFPA 414/1901/1906/1917) — cited as an example mission-domain anchor recorded at assessment, not a harmonised global floor. No harmonised public performance floor exists for radiological robots, so none is asserted here.

3 Terms and definitions

For the purposes of this Standard, the terms in VRS-GEN-001 (aligned to ISO 8373:2021) apply, together with the following local terms:

• extreme environment — an environment whose conditions (explosive atmosphere, ionising radiation, fire, structural collapse, toxic release) preclude routine human presence.
• environment class — the declared extreme-environment category the model is assessed in; at minimum one of explosive-atmosphere, radiological, eod, fire, search-rescue.
• exposure envelope — the declared operating limits for an environment class: zone class (explosive atmospheres), dose budget (radiological, in millisieverts, mSv), and thermal envelope (fire, in °C).
• mission criticality — the consequence class of the robot failing mid-mission, where human intervention may be impossible.
• hazard aggravation — the robot itself becoming an ignition source, a contamination-spread path, or an obstacle that worsens the incident it was deployed to resolve.
• theatre exposure — operating time accrued in a declared environment class, measured in op-hours, used as the exposure denominator for frequency-type quantities.
• contamination write-off — loss of residual value when a unit exposed to radiological or chemical contamination cannot be decontaminated to a returnable state, even if functionally repairable.

4 Sector applicability

4.1 HAZ is an intended-use sector (VRS-GEN-007 §5.2): no capability gate applies. A model shall be treated as HAZ-applicable when (a) the manufacturer declares a hazardous or emergency-response use in its operating envelope, or (b) an assessor records evidence of material deployment in an extreme environment (override with rationale, VRS-GEN-006 §5.2). Default: not-applicable.

4.2 The minimum capability for applicability is operation in at least one declared environment class with evidence that the robot does not aggravate the hazard (ignition, contamination spread, obstruction).

4.3 The assessed envelope shall state the environment classes covered — at minimum one of explosive-atmosphere, radiological, eod, fire, search-rescue — as protocol applicability fields (VRS-GEN-007 §4.2), each with its declared exposure envelope (zone class, dose budget in mSv, thermal envelope in °C). The AR letter shall cover only the assessed classes; unassessed classes shall be displayed as not covered.

4.4 Environment classes are the sector’s segments: per-class letters where evidence diverges materially, lowest-issued-letter display, and not-covered handling of unassessed classes follow VRS-GEN-006 §8.3 (the single home of that rule), as implemented for this sector in VRS-HAZ-201. Where a model is assessed for more than one environment class, the displayed sector letter shall be the lowest letter issued across the assessed classes.

4.5 Evidence shall be attributable both to a declared environment class and to its exposure envelope (zone class, dose budget in mSv, thermal envelope in °C); evidence accrued outside the declared envelope shall not support a broader claim. Where evidence does not cover the declared envelope, the envelope shall contract to the exposure actually observed rather than the score being stretched to cover conditions never seen (VRS-HAZ-201 §4.3–4.4).

5 Sector hazard taxonomy

The Hazardous & Emergency Response AR shall weigh, at minimum, the following hazard groups. Each maps to the IR categories (VRS-GEN-005 §5) it draws evidence from and to its dominant loss driver; the sector emphasis (weights) is defined in VRS-HAZ-201, not here.

5.1 The hazard taxonomy shall be treated as the minimum coverage set: an assessment that omits a hazard group applicable to the declared environment classes shall record the omission and its reason.

5.2 H1 (hazard aggravation) is the sector-defining loss driver and shall never be inferred from transferred evidence: the anti-aggravation case shall rest on the environment class’s own certification or instrumented test evidence, not on analogy to another model or class.

5.3 Severity in this sector shall account for the mission consequence, not only physical harm to bystanders: a mission-critical failure of an EOD or radiological platform can leave an unresolved hazard in a zone humans cannot enter, a consequence that exceeds the platform’s own repair cost. The assessment shall record the mission-consequence class alongside the physical-harm severity so that the two are not conflated in the rating record.

6 Sector Application Rating

6.1 The Hazardous & Emergency Response sector AR shall be determined per VRS-HAZ-201 from the pool defined there — the sector criteria HAZ-1…HAZ-9 together with the contributing intrinsic criteria — as a percentage of the applicable pool; letters (C < B < A < AA < AAA, AAA best) follow VRS-GEN-006 §4. The machine-readable data twin is VRS-HAZ-501.

6.2 The letter bands, the per-criterion tier ceilings, and the reserved-headroom AAA band (deliberately hard, anti-inflation) live in VRS-GEN-006 §4 and VRS-HAZ-201 §7 and are not restated here.

6.3 Anchor-regime conformity (Clause 2) is scored by VRS-HAZ-201 §6.1 (criterion HAZ-1, Environment-specific certification / qualification), by environment class, on a large point range — the ATEX / IECEx (IEC 60079-0) certificate for the declared zone in the explosive-atmosphere class, and the recorded mission-domain requirements for the other classes. Absence of evidenced conformity scores zero on that criterion and is not a gate — the rating rewards performance above the compliance floor without substituting for it.

7 Evidence requirements

7.1 Evidence shall be graded per VRS-GEN-012. Sector-relevant sources include: certification dossiers (ATEX / IECEx / UL 121201), qualification-test campaigns, operator mission logs (in op-hours), radiation-exposure and dose records (in mSv), decontamination and disposal records, and post-incident reports.

7.2 For each hazard group, an existing conformity artefact should be mapped to the VRS evidence lane so that adoption costs a manufacturer a mapping rather than new testing:

7.3 Evidence shall be assessed at one of three tiers — Unverified, Verified, Certified — each criterion stating the points reachable at each tier (VRS-HAZ-201 §6, §8). Where a criterion’s evidence bar is not met the criterion shall score 0 (no evidence is zero points, not a discard from the pool); a model×class with no admissible extreme-environment evidence shall be displayed as not covered for that class (VRS-GEN-006 §6).

7.4 Models without sufficient model-specific operating history shall be scored at the tier the available evidence supports and, where offered, from manufacturer-wide records under the company-wide fallback and cold-start parity of VRS-GEN-005 §6; the lower tier caps the attainable letter through the per-criterion ceilings (VRS-HAZ-201 §7). Where H1 anti-aggravation evidence rests on manufacturer declaration alone, without a certification dossier or instrumented test data, the assessment shall hold the criterion at its Unverified rung and record the evidence gap. Field-return evidence from extreme environments shall be treated as Unverified-tier unless instrumented, because the environment corrupts recollection where instruments do not.

8 Loss-driver mapping (insurance and finance fitness)

8.1 Every quantity that feeds the HAZ rating shall be traceable to a loss driver and to a Robot Risk Passport field (VRS-GEN-009), so that an underwriter or lender can compute it from obtainable evidence. The mapping is:

8.2 A HAZ signal that lacks an exposure denominator shall not be scored as a frequency; it shall be recorded as a descriptive attribute or elevated as a design question (VRS-GEN-202). No loss statistic shall be invented to fill a missing denominator.

8.3 The rating output shall be expressed so that it can feed an underwriting decision (rate relativity, deductible, exclusion, condition) or a credit decision (loan-to-value, residual curve, covenant), and shall be recorded in the Passport with its assessment tier, the environment classes and exposure envelopes covered, and evidence-basis flags (VRS-GEN-006 §9.3, VRS-GEN-009). The letter alone is insufficient.

8.4 Contamination write-off is the finance-risk driver unique to this sector: a radiologically or chemically contaminated unit may carry near-zero residual value even when it is functionally repairable, because return-to-service and resale depend on decontamination to a certifiable state, not on mechanical condition. The rating shall record contamination write-off exposure as a separate passport attribute and shall not net it against serviceability (H5), so that a lender can weight recoverability and residual value independently in its residual curve.

8.5 Correlated and cyber-catastrophe accumulation (H4) shall be surfaced as a passport-recorded attribute: where many units of a model share one control or update plane, one adversary action or one defective update can degrade or capture the fleet at once, so the risk does not diversify the way independent mechanical failures do. The attribute shall record whether that plane holds an IEC 62443-4-2:2019 SL-C evaluation, so an underwriter can set a per-fleet accumulation cap. This attribute is descriptive, not scored, until a fleet-loss denominator exists (VRS-GEN-202 §8).

9 Protocol references

• VRS-HAZ-201 — Hazardous & Emergency Response AR Assessment Protocol (scoring) — dated reference at assessment time; its data twin is VRS-HAZ-501.
• Hazardous Test Protocols (VRS-HAZ-1xx) are reserved; the first candidates are an explosive-atmosphere qualification protocol (drawing on IEC 60079 test methods) and a decontamination / recovery verification protocol, drawing on the anchor regimes’ test regimes rather than duplicating them.

10 Worked example (informative) — applicability walkthrough

The following illustrates how an assessor applies Clauses 4–8 to a hypothetical model; it is not a real assessment and does not imply any robot holds a Veyrum rating (VRS-GEN-006 §10).

Input. A manufacturer declares a tracked ground robot, model code HAZ-EX-01, for two environment classes: explosive-atmosphere (oil/gas, Zone 1) and search-rescue. The manufacturer holds an ATEX 2014/34/EU EU-type-examination certificate and an IECEx CoC to the superseded IEC 60079-0:2017 (ed 7.0; acceptable H1 evidence until re-certification per §2/§6.3) for the declared Zone 1, an IEC 60529:1989+AMD2:2013 IP66 report, an IEC 62443-4-2:2019 SL-2 evaluation of the tele-operation link, and 6,000 op-hours of operator field data with 2 recorded link-loss events and 0 aggravation events.

Step 1 — applicability (Cl. 4). The manufacturer declaration satisfies 4.1(a); HAZ is applicable. The envelope records classes explosive-atmosphere (Zone 1) and search-rescue, each with its exposure envelope (4.3). Two classes are assessed, so 4.4 lowest-letter display applies across them.

Step 2 — hazard coverage (Cl. 5). H1–H6 all apply to the declared classes. H1 evidence rests on the ATEX + IECEx certification for Zone 1, satisfying 5.2 (no transferred evidence).

Step 3 — anchor conformity (Cl. 6.3). The ATEX + IECEx Zone 1 certificate is scored on criterion HAZ-1 by VRS-HAZ-201 §6.1 for the explosive-atmosphere class; because it is evidenced it earns points on the criterion’s range rather than acting as a gate.

Step 4 — search-rescue class (Cl. 6.3). The search-rescue class has no ATEX-style floor; its mission-domain requirements (recorded per assessment) plus ASTM E2853/E2853M-22 capability results are the HAZ-1 evidence for that class, again scored on the range, not gated.

Step 5 — evidence tier (Cl. 7.3–7.4). The evidence pack (ATEX EU-type-examination certificate, IECEx CoC to the superseded IEC 60079-0:2017, IEC 60529:1989+AMD2:2013 IP66 report, IEC 62443-4-2:2019 SL-2 evaluation, and 6,000 op-hours with 2 link-loss and 0 aggravation events) is documented but not witnessed, so the assessment supports the Verified tier; each criterion is held at its Verified ceiling (VRS-HAZ-201 §7) and the Certified tier is not reached.

Step 6 — loss-driver read (Cl. 8). Link-loss frequency is expressed as 2 events per 6,000 op-hours = 0.33 per 1,000 op-hours (H4). The model shares a fleet update plane with an SL-2 (not SL-C) evaluation, so 8.5 records the accumulation attribute below the target level. No contamination write-off exposure applies (no radiological/chemical class declared), so 8.4 records that attribute as not applicable.

Output. The rating is computed by VRS-HAZ-201 (not in this document). The Passport record carries the per-class letters, the environment classes and exposure envelopes, the assessment tier, the H4 evidence notes, and the accumulation attribute. The numeric score and band boundary come from the criterion rungs and bands of VRS-HAZ-201 and are not asserted here.

Annex A (normative) — Qualification-test module (first use)

A.1 For each declared environment class, qualification-test evidence shall demonstrate survival and function at the declared exposure envelope — survival alone is insufficient.

A.2 Test conditions shall be traceable to the class’s recognised test regime: IEC 60079 methods for explosive atmospheres; IEC 60529:1989+AMD2:2013 for ingress protection; total-ionising-dose test methods for radiological classes; and the ASTM E54.09 response-robot test methods (e.g. ASTM E2853/E2853M-22) for eod, fire, and search-rescue capability. Where no harmonised method exists (radiological robots), the recorded mission-domain method shall be stated.

A.3 Field-return evidence from extreme environments shall be treated as Unverified-tier unless instrumented, per 7.4.

Bibliography

• ISO 8373:2021, Robotics — Vocabulary (iso.org/standard/75539.html) — robot-term basis.
• ATEX Directive 2014/34/EU (recast; applicable from 20 April 2016), equipment for potentially explosive atmospheres (eur-lex.europa.eu/eli/dir/2014/34/oj; EC ATEX Guidelines Ed. 5, 2024) — H1 floor (EU).
• IEC 60079-0:2026 (Edition 8.0; published 2026-06-16; cancels and replaces Edition 7.0:2017 as a technical revision), Explosive atmospheres — Part 0: Equipment — General requirements (webstore.iec.ch/en/publication/114218); IECEx scheme — H1 international route.
• UL 121201 (9th edition, 2017; harmonised with CSA C22.2 No. 213-17), Nonincendive electrical equipment for Class I/II Division 2 and Class III hazardous locations (webstore.ansi.org) — H1 US route.
• IEC 60529:1989+AMD2:2013 (IP Code), degrees of protection provided by enclosures (webstore.iec.ch/en/publication/2452) — H3 ingress-protection lane.
• ASTM E2853/E2853M-22, Standard Test Method for Evaluating Emergency Response Robot Capabilities: HSI: Search Tasks (webstore.ansi.org; DHS-NIST-ASTM E54.09 suite; also ASTM E2566-17a, sensing) — H6 lane.
• NFPA 1900, 2024 edition, Standard for Aircraft Rescue and Firefighting Vehicles, Automotive Fire Apparatus, Wildland Fire Apparatus, and Automotive Ambulances (effective 2024-01-01; consolidates NFPA 414/1901/1906/1917) (catalog.nfpa.org, product P22358) — fire-class firefighting-apparatus mission-domain anchor (US regime, recorded at assessment).
• IEC 62443-4-2:2019, technical security requirements for IACS components (SL-C; FR1–FR7) — H4 cyber lane.
• ISO 14224:2016, Petroleum, petrochemical and natural gas industries — Collection and exchange of reliability and maintenance data for equipment (iso.org/standard/64076.html) — H2/H5 maintenance lane.
• VRS framework research Phase 5 (internal) — HAZ regime scan (extreme-environment; non-harmonised mission domains).

Change history