{"closest_prior_art":[{"name":"Individual-flow protection for parallel centrifugal pumps","overlap":"Directly identifies the proposal's core aggregation problem: pumps sharing common suction and discharge headers can have materially different individual flows even though a group total-flow meter is used. It reconstructs pump-specific flow from motor power and differential pressure and applies minimum- and maximum-flow actions.","remaining_difference":"It implements envelope protection for a particular installation, not a longitudinal, multi-signal duty-budget analysis comparing condition-aware staging policies while testing whether risk is transferred among pumps.","source_ids":["SRC3"]},{"name":"Schneider Electric DevSwcPumpCtrl","overlap":"Maintains constant network pressure while staging available pumps according to demand and dynamically prioritizing them using individual operating hours; alarms, availability, and user-defined priority tables constrain operation.","remaining_difference":"Its documented priority scheme primarily equalizes operating hours. It does not document classification of functional versus harmful heterogeneity using pump-specific starts, curve residence, vibration, temperature, condition, and reserve-risk budgets.","source_ids":["SRC2"]},{"name":"Optimal Staging Control and Fault Detection in Parallel Pump Systems","overlap":"Combines staging optimization and fault detection using pump flow, speed, and power relationships and demonstrates the method on a four-pump system.","remaining_difference":"The abstract does not establish the proposal's specific contrast between an accepted stable macrostate and persistent multi-signal member-duty excursions, nor its predeclared risk budgets, transfer checks, and change-board-gated replay.","source_ids":["SRC4"]}],"contrastive_claim_falsifier":"The remaining claim is falsified if synchronized pump-level reconstruction shows no persistent excursion beyond measurement uncertainty and declared functional specialization, if the existing acceptance process already performs the same joint macro/micro review, or if constrained replay cannot reduce a flagged excursion without degrading flow, pressure, reserve capacity, starts, energy constraints, protections, or another pump's trajectory.","contrastive_claim_remaining":"Compared with established constant-pressure staging, operating-hour equalization, and individual-flow protection, a predeclared multi-signal risk-budget policy may identify and reduce persistent pump-specific duty excursions while preserving the accepted station flow-pressure state and avoiding harmful duty transfer to another member.","experiment_id":"eoa_inverse_innovation_exp13_second_slot_policy60_20260806","gates":{"adequate_source_search":{"rationale":"Four search lanes covered direct terminology, duty/standby and lead-lag synonyms, products and guidance, and combinations involving condition monitoring, fault detection, staging, simulation, and reliability. Four opened sources span four publishers and include official guidance, first-party documentation, and primary research.","source_ids":["SRC1","SRC2","SRC3","SRC4"],"status":"PASS"},"bounded_next_test":{"rationale":"Freezing regimes, uncertainty bounds, macro bands, specialization rules, and excursion criteria before a read-only reconstruction and one offline policy comparison is a bounded, reversible test. Existing guidance and implementations provide pump-curve, operating-point, availability, staging, and inferred-flow inputs suitable for such replay.","source_ids":["SRC1","SRC2","SRC3","SRC4"],"status":"PASS"},"distinct_testable_claim":{"rationale":"Although the core problem and most intervention components substantially collide with prior art, a narrower comparative claim remains testable: whether multi-signal, condition-qualified risk budgets outperform operating-hour equalization and individual-flow protection without shifting risk or degrading the station macrostate.","source_ids":["SRC2","SRC3","SRC4"],"status":"PASS"},"no_obvious_safety_or_authority_stop":{"rationale":"The authorized first step is read-only and offline. The proposal preserves existing alarms, operating envelopes, minimum-flow requirements, availability rules, and change authority; the retained sources reinforce rather than contradict these constraints.","source_ids":["SRC1","SRC2","SRC3"],"status":"PASS"},"supported_problem":{"rationale":"Official guidance warns that parallel pumps can load-share poorly and force a member below minimum flow, while a documented field application reports flow discrepancies caused by piping, performance, and wear despite a common header and notes that group total-flow measurement is more common than individual measurement.","source_ids":["SRC1","SRC3"],"status":"PASS"}},"prior_art_disposition":"SUBSTANTIAL_COLLISION","problem_evidence":{"finding":"The problem is directly visible: acceptable aggregate delivery does not establish safe or balanced individual-pump operation. Common-header installations can conceal member flow imbalance, low-flow operation, vibration, overheating, and failure risk, particularly when pumps or branches differ.","source_ids":["SRC1","SRC3"],"status":"SUPPORTED"},"research_id":"eoa_inverse_innovation_exp13_light_screen_20260806","schema_version":1,"screen_id":"E13P159","screen_survival":false,"search_lanes":{"component_combination":{"no_result_note":null,"queries":["parallel pumps condition based staging efficiency reliability research","parallel pumps risk based scheduling starts vibration reliability optimization","risk based pump scheduling reliability parallel pump staging historical data simulation","digital twin parallel pump staging condition monitoring vibration reliability"],"source_ids":["SRC1","SRC3","SRC4"]},"direct_problem_and_intervention":{"no_result_note":null,"queries":["parallel pump staging run time equalization lead lag stable header pressure pump reliability","parallel pumps unequal load sharing common header pump wear lead lag runtime","parallel pump individual operating point monitoring common header total flow condition monitoring"],"source_ids":["SRC2","SRC3","SRC4"]},"products_practices_and_standards":{"no_result_note":null,"queries":["multi pump controller alternation operating hours starts condition based pump staging product","Hydraulic Institute parallel pumps staging preferred operating region controls","multi pump controller pump specific efficiency starts hours alternation pressure first party"],"source_ids":["SRC1","SRC2"]},"synonyms_and_historical_terms":{"no_result_note":null,"queries":["pump station duty standby automatic alternation equal run hours standard","parallel pump run hours alternation pressure control","parallel pumps condition based staging efficiency reliability research"],"source_ids":["SRC1","SRC2","SRC4"]}},"sources":[{"claims_supported":["Parallel pumps may provide aggregate flexibility and redundancy while individual operating points depend on pump and system curves.","A dominant pump can force another below its minimum-flow requirement.","BEP, preferred operating region, vibration, hydraulic loading, and service life are relevant pump-level criteria."],"publisher":"U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy","source_id":"SRC1","source_type":"OFFICIAL_GUIDANCE","title":"Improving Pumping System Performance: A Sourcebook for Industry, Second Edition","url":"https://www1.eere.energy.gov/manufacturing/tech_assistance/pdfs/pump.pdf"},{"claims_supported":["A commercial control function stages parallel pumps to maintain constant pressure.","Pump availability, demand, alarms, and device priority constrain switching.","Operating hours can generate a dynamic priority table intended to keep pump hours at similar levels."],"publisher":"Schneider Electric","source_id":"SRC2","source_type":"FIRST_PARTY_PRODUCT","title":"Description – DevSwcPumpCtrl","url":"https://product-help.se.com/docs/Machine%20Expert/V1.1/en/Pump_SoM/Pump_SoM/Pump_SoMHVAC__Pumping_Functions/Pump_SoMHVAC_Pumping_Functions-7.htm"},{"claims_supported":["Common-header parallel pumps can develop individual flow discrepancies because of piping, performance, and wear differences.","A group total-flow meter can be insufficient for individual-pump protection.","Pump-specific flow can be inferred from motor power and differential pressure and compared with safe-flow limits."],"publisher":"Pumps & Systems","source_id":"SRC3","source_type":"TRADE_PROFESSIONAL","title":"A Novel Way of Protecting Parallel Centrifugal Pumps","url":"https://www.pumpsandsystems.com/article/novel-way-protecting-parallel-centrifugal-pumps/"},{"claims_supported":["Parallel-pump staging can be optimized jointly with fault detection.","Flow, speed, and pump-power relationships can support the approach.","The reported approach was demonstrated on a four-pump secondary chilled-water system."],"publisher":"University of Miami Libraries / ASHRAE Transactions","source_id":"SRC4","source_type":"PRIMARY_RESEARCH","title":"Optimal Staging Control and Fault Detection in Parallel Pump Systems","url":"https://scholarship.miami.edu/esploro/outputs/journalArticle/Optimal-Staging-Control-and-Fault-Detection/991033053534202976"}],"world_novelty_boundary":"This bounded public-web screen found substantial collision with the core aggregation diagnosis and with established staging, hour-balancing, individual-flow protection, and staging-plus-fault-detection practices. It did not establish an exact public match for the full multi-signal risk-budget and transfer-check workflow, but it cannot establish world novelty, patentability, market size, expert acceptance, or realized value."}