{"schema_version":1,"experiment_id":"eoa_inverse_innovation_exp11_mechanism_context_external20_20260804","research_id":"eoa_inverse_innovation_exp11_external_scrutiny_20260804","cell_id":"deadweight_loss_reduction__systems_cybernetics","opaque_id":"deadweight_loss_reduction__systems_cybernetics__B","search_lanes":{"direct_problem":{"queries":["safety interlock nuisance trips benign transients redundant sensors state dependent logic","process plant spurious trip safety instrumented system false trip availability","nuisance trips operators bypass safety interlocks workaround"],"source_ids":["S3","S4","S7","S8"],"no_result_note":null},"closest_prior_art":{"queries":["adaptive safety interlock state dependent trip threshold nuisance trip","adaptive relaying nuisance tripping system configuration","cold load pickup blocking old relay nuisance tripping history","redundant evidence voting state dependent protection independent hard limit emergency stop"],"source_ids":["S2","S3","S5","S8"],"no_result_note":null},"historical_terminology":{"queries":["history protective relaying false operation security dependability adaptive protection settings older terminology","cold load pickup blocking old relay nuisance tripping history","two out of three voting false trip safety system history"],"source_ids":["S1","S3"],"no_result_note":null},"products_practices_standards":{"queries":["site:iec.ch IEC 61511 spurious trip bypass override functional safety process industry","site:isa.org ISA 84 spurious trip voting redundancy safety instrumented system","site:rockwellautomation.com safety muting state conditions light curtain temporary suspension interlock","site:se.com protection function disabled start state avoid nuisance tripping safety"],"source_ids":["S1","S2","S5","S6"],"no_result_note":null},"non_english_regional":{"queries":["安全仪表系统 误跳车 状态 条件 联锁 冗余 表决","déclenchement intempestif interverrouillage sécurité seuil adaptatif transitoire","Fehlauslösung Sicherheitsverriegelung zustandsabhängig Schutzfunktion Muting","disparo intempestivo enclavamiento seguridad umbral adaptativo transitorio"],"source_ids":["S2","S4"],"no_result_note":null},"composition_subproblems":{"queries":["safety instrumented system shadow mode replay validation trip logic before deployment","interlock change validation simulation proof test rollback certified safety logic","redundant evidence voting state dependent protection independent hard limit emergency stop","trip log adjudication false trips operator burden safety interlock pilot"],"source_ids":["S1","S5","S6"],"no_result_note":null}},"sources":[{"source_id":"S1","title":"ISA-TR84.00.02-2022: Safety Integrity Level Verification of Safety Instrumented Functions","url":"https://www.isa.org/getmedia/7aa120c2-2a4e-4967-b883-f25ae3210e1c/tr_840002_preview.pdf","publisher":"International Society of Automation","date_or_year":"2022","source_type":"OFFICIAL_STANDARD","language":"English","claims_supported":["SIF design explicitly treats spurious-trip-rate constraints alongside safety-integrity requirements.","Common-cause and common-mode failures must be assessed when using redundancy.","SIS modifications belong within a safety lifecycle including management of change, verification, commissioning, and validation."]},{"source_id":"S2","title":"What is the definition of ANSI CLPU 50N/51N – Earth fault cold load pick-up/blocking?","url":"https://www.se.com/ng/en/faqs/FA360547/","publisher":"Schneider Electric","date_or_year":"2018; modified 2024","source_type":"FIRST_PARTY_PRODUCT","language":"English (Nigeria regional site)","claims_supported":["Known energization transients can cause incorrect residual-current measurements and nuisance protection trips.","Commercial protection implements state-conditioned temporary setpoint increases or inhibition after energization.","The function is unnecessary where correctly installed measurement already removes the false-trip mechanism, supporting the calibration-only rival."]},{"source_id":"S3","title":"Cold Load Pickup Issues","url":"https://www.pes-psrc.org/kb/report/075.pdf","publisher":"IEEE Power Engineering Society, Power System Relay Committee, Working Group D1","date_or_year":"circa 2008","source_type":"OFFICIAL_GUIDANCE","language":"English","claims_supported":["Protective relays can misclassify cold-load pickup as a fault and de-energize an unfaulted circuit.","Modern relays can temporarily block elements or raise pickup settings and automatically restore normal settings as the transient subsides.","The report includes field examples and identifies outage duration, load type, weather, restoration mode, and other system state as relevant evidence."]},{"source_id":"S4","title":"Optimization process of proof test cycle of safety instrumented system integrating spurious trip","url":"https://zkjournal.upc.edu.cn/article/html/20230615","publisher":"Journal of China University of Petroleum (Edition of Natural Science)","date_or_year":"2023","source_type":"PRIMARY_RESEARCH","language":"Chinese with English abstract","claims_supported":["A hydrocracking-unit application treats spurious trips and failure-to-act losses jointly in SIS reliability management.","The reported optimization reduced total test-cycle loss cost by 17.57% on average and unit loss rate by 10.25% while incorporating field failure information.","The application uses explicit KooN voting architectures, including 2oo3 sensors, demonstrating established redundant-evidence practice."]},{"source_id":"S5","title":"Muting Light Curtain Monitoring Safety Relays","url":"https://www.rockwellautomation.com/en-il/products/hardware/safety-products/safety-relays-muting-light-curtain.html","publisher":"Rockwell Automation","date_or_year":"undated; accessed 2026","source_type":"FIRST_PARTY_PRODUCT","language":"English","claims_supported":["Commercial safety relays automatically suspend a safety function temporarily when specified conditions are met so material can pass without stopping machinery.","The product monitors multiple light curtains and is offered with TÜV certification and stated IEC/EN safety-integrity and performance-level conformity.","State-conditioned safety permission is therefore an implemented product class, not merely a hypothetical mechanism."]},{"source_id":"S6","title":"Common Inspection Criteria: Safety Instrumented Functions","url":"https://minerva.jrc.ec.europa.eu/en/shorturl/technical_working_group_2_seveso_inspections/cic_safety_instrumented_functions","publisher":"European Commission Joint Research Centre, MINERVA","date_or_year":"2023 update","source_type":"OFFICIAL_GUIDANCE","language":"English; German version also provided","claims_supported":["Operators must identify and document SIFs, trip points, voting logic, fault tolerance, and responses to sensor disagreement or failure.","Independent components, conservative trip points, commissioning tests, periodic testing, and documented management of change are expected safeguards.","Temporary deactivation requires formal line-management permission and alternative measures; changes must be assessed for reliability, effectiveness, and introduced risks."]},{"source_id":"S7","title":"Accident Report 145188.015: Employee punctures hand while operating lathe, bypassed interlock","url":"https://www.osha.gov/ords/imis/accidentsearch.accident_detail?id=145188.015","publisher":"U.S. Occupational Safety and Health Administration","date_or_year":"2022 event and inspection","source_type":"OTHER","language":"English","claims_supported":["An operator bypassed an interlock and removed a guard to continue working, resulting in a severe hand injury.","Unsafe workaround behavior is a concrete safety risk, although this record does not establish that nuisance trips caused the bypass."]},{"source_id":"S8","title":"Design Note 495: Simple Energy-Tripped Circuit Breaker with Automatic Delayed Retry","url":"https://www.analog.com/en/resources/design-notes/energy-tripped-circuit-breaker-with-automatic-delayed-retry.html","publisher":"Analog Devices","date_or_year":"undated Design Note 495","source_type":"FIRST_PARTY_PRODUCT","language":"English","claims_supported":["A fixed trip-current threshold can nuisance-trip on short benign transients.","A commercial reference design conditions the trip on both current and duration, admitting short excursions while tripping sustained or larger excursions faster.","The design demonstrates an established temporal safety-envelope alternative to binary thresholding."]}],"problem_evidence":{"status":"SUPPORTED","finding":"The core problem exists. IEEE guidance documents protective relays de-energizing unfaulted circuits during cold-load transients; Schneider and Analog Devices document nuisance trips caused by energization or short-duration transients; ISA treats spurious-trip rate as a formal SIF design constraint; and the Chinese field application reports material production-loss effects. Unsafe bypass behavior also exists, but the retained OSHA incident does not prove that nuisance trips caused that particular bypass.","source_ids":["S1","S2","S3","S4","S7","S8"],"uncertainty":"The sources establish the general phenomenon and several concrete domains, not its prevalence, value loss, or workaround causality for any proposed deployment site."},"adopter_evidence":{"status":"SUPPORTED","finding":"An identifiable adopter and authorizer exist: the plant, utility, or machine operator that owns the SIF or protection logic, acting through its accountable safety owner and formal line-management or management-of-change process; regulators or Seveso inspectors can review higher-consequence installations.","source_ids":["S1","S3","S6"],"uncertainty":"No specific facility, unit, named safety owner, regulator, or budget holder is supplied, so actual adoption authority must be confirmed locally."},"implementation_evidence":{"status":"PARTLY_SUPPORTED","finding":"Major intervention elements are already implemented: cold-load pickup logic changes protection by operating state, energy-based breakers combine magnitude and duration, light-curtain muting grants conditional temporary permission, and 2oo3 voting supplies redundant evidence. Standards and official guidance require lifecycle validation, independence analysis, testing, and controlled change. No retained source validates the proposal's exact combined package of redundant state estimation, independent hard invariants, non-actuating shadow replay, burden monitoring, and automatic rollback on one safety-critical unit.","source_ids":["S1","S2","S3","S4","S5","S6","S8"],"uncertainty":"Safety performance is application-specific; correlated sensing, poorly justified muting conditions, or a weakened detection margin could reverse the expected benefit."},"prior_art":{"disposition":"ESTABLISHED_PRACTICE","closest_analogues":[{"name":"Cold-load pickup adaptive relay logic","source_ids":["S2","S3"],"same_problem":true,"same_causal_lever":true,"overlap":"Known benign energization states can cross ordinary trip settings; deployed logic temporarily blocks or raises selected protection settings and restores ordinary settings afterward.","remaining_difference":"The cited implementations are feeder-specific and do not, by themselves, establish the proposal's full redundant-state, independent-hard-limit, shadow-evaluation, incidence-review, and rollback package."},{"name":"Condition-controlled light-curtain muting","source_ids":["S5","S6"],"same_problem":true,"same_causal_lever":true,"overlap":"A coarse protective field would stop machinery for intended material passage; certified products temporarily suspend the function when defined conditions are satisfied, while safety governance requires fault tolerance, testing, and controlled change.","remaining_difference":"The product addresses a structured material-flow case rather than uncertain process transients and the retained page does not report comparative false-trip and missed-hazard outcomes."},{"name":"Energy/time-conditioned electronic circuit breaker","source_ids":["S8"],"same_problem":true,"same_causal_lever":true,"overlap":"The design replaces a fixed binary threshold with a state-dependent magnitude-duration rule so short benign excursions continue while persistent or larger excursions trip.","remaining_difference":"It is a component reference design without redundant sensing, high-consequence SIS authorization, distributional review, or shadow-deployment evidence."},{"name":"Redundant voting and spurious-trip verification for SIS","source_ids":["S1","S4","S6"],"same_problem":true,"same_causal_lever":true,"overlap":"2oo3 sensor voting, diagnostics, explicit spurious-trip metrics, fault-tolerance justification, and lifecycle testing are established safety-engineering practices.","remaining_difference":"Voting alone may address sensor faults rather than coarse state classification, and it does not select a site-specific multivariable permission envelope."}],"contrastive_claim_remaining":"No credible generic novelty claim remains for state-conditioned protection, redundant voting, or lifecycle validation. A distinct contextual claim remains: on one named unit, a preregistered 30-day non-actuating replay/shadow envelope will reduce blinded-adjudicated nonhazardous trip recommendations by at least 25% relative to the certified logic, with zero additional missed hazardous-trip predictions, no invariant breach, unchanged preregistered detection margin, and operator burden within a defined noninferiority bound.","contrastive_claim_falsifier":"The contextual claim is falsified if the false-trip reduction is below 25%, any adjudicated hazardous event would not have tripped, detection margin worsens beyond the preregistered bound, any independent invariant is breached, or operator burden exceeds its bound. Negligible baseline nonhazardous trips or recoverable operating value would also falsify the motivating problem at that site.","confidence":"HIGH","search_limitations":"This bounded search used eight opened public sources across standards, government guidance, professional-society guidance, primary research, and first-party products. It did not inspect proprietary trip logs, complete paywalled standards, certification files, regulator-specific rules for a named asset, or an exhaustive patent and product corpus."},"researchability_gates":{"externally_supported_problem":{"status":"PASS","rationale":"Multiple independent sources directly document benign transients causing unwarranted trips, formal spurious-trip constraints, and operational losses.","source_ids":["S1","S2","S3","S4","S8"]},"identifiable_adopter_or_authorizer":{"status":"PASS","rationale":"The responsible operator and safety owner are identifiable organizational roles, and official guidance specifies formal line-management permission and management of change for deactivation or modification.","source_ids":["S1","S6"]},"distinct_testable_incremental_claim":{"status":"PASS","rationale":"Although the generic intervention is established, an equipment-specific comparative claim with a 25% false-trip threshold, zero additional missed-hazard predictions, invariant preservation, detection-margin bounds, and workload noninferiority is distinct and falsifiable.","source_ids":["S1","S3","S6"]},"bounded_next_evidence_step":{"status":"PASS","rationale":"A one-unit, 30-day, non-actuating replay/shadow test with blinded adjudication is bounded, reversible, and consistent with documented pre-service testing, validation, and change-control practice.","source_ids":["S1","S6"]},"no_unresolved_safety_or_authority_stop":{"status":"PASS","rationale":"The first step does not actuate or disable certified protection. Live deployment remains conditional on safety-owner authorization, formal change control, independence/common-cause review, validation, and immediate rejection of any missed-hazard prediction; the OSHA record reinforces why uncontrolled bypass is excluded.","source_ids":["S1","S6","S7"]},"adequate_search_evidence":{"status":"PASS","rationale":"All six required lanes were searched adversarially using direct, historical, standards/product, multilingual/regional, and component-combination terminology. Exactly eight retained sources were opened; they span seven publishers and include standards, official guidance, primary research, and first-party product evidence.","source_ids":["S1","S2","S3","S4","S5","S6","S7","S8"]}},"strict_success":false,"screen_survival":false,"remaining_research_value":"MODERATE","recommended_next_step":"Select one named unit and accountable safety owner; assemble timestamped trip, process-state, sensor-health, restart-cost, override, workload, and hazard-adjudication records; define independence and hard-invariant requirements; then preregister and run the proposed 30-day non-actuating comparison. Stop analysis on any predicted missed hazardous trip, invariant breach, unexplained discrepancy, or burden-bound violation. Do not proceed to live actuation without formal management-of-change, safety validation, and regulator or independent-review approval where applicable.","world_novelty_boundary":"The search supports only the conclusion that the broad problem-intervention package overlaps established safety-engineering practice and leaves a site-specific empirical claim. It cannot establish world novelty, patentability, freedom to operate, market size, routine use in every safety-critical sector, or realized impact."}