{"closest_prior_art":[{"name":"Xylem TECHNOForce e-HV troubleshooting procedure","overlap":"Treats erratic cycling or hunting as a symptom with multiple plausible control, instrumentation, hydraulic, and mechanical causes, including low-demand oversizing, fluctuating inlet pressure, diaphragm-tank faults, pressure-transducer faults, and check-valve malfunction.","remaining_difference":"It provides a symptom-to-remedy checklist but does not preserve competing explanations, register event-order or propagation predictions, conduct a nearest-rival discriminating maneuver, or require an action-limited explanation or unresolved tie.","source_ids":["SRC1"]},{"name":"Low-flow pressure-reducing-valve laboratory experiments","overlap":"Uses a controlled flow-change maneuver and 100 Hz pressure and flow measurements at multiple locations to characterize persistent low-flow pressure oscillation and associate it with valve behavior.","remaining_difference":"The tested valve mechanism is selected in advance; the work does not compare controller, sensor, demand, pump, valve, air, and network-transient explanations for one field anomaly or maintain a defeasible commissioning ledger.","source_ids":["SRC2"]},{"name":"Hoppers Crossing pump-station transient investigation","overlap":"Begins with a commissioning transient, performs detailed field pressure and flow measurements under gentle transient conditions, validates a numerical model against those measurements, identifies column separation, and develops an operating protocol.","remaining_difference":"This is the closest maneuver-and-measurement precedent, but it investigates a substantially predetermined hydraulic-transient mechanism rather than preregistering cross-subsystem rivals, preserving justified ties, and restricting conclusions through an explicit action-confidence record.","source_ids":["SRC3"]},{"name":"PNNL variable-speed-drive O&M best practices","overlap":"Calls for diagnosis before reset, written records of diagnostics and findings, trending of drive frequency, current, and controlled fluid pressure, testing under safety recommendations, and work by qualified personnel.","remaining_difference":"It does not bind an immutable anomaly packet to a separate rival ledger or require candidate-specific temporal and spatial predictions and a reversible nearest-rival test.","source_ids":["SRC4"]}],"contrastive_claim_falsifier":"The contrastive claim would be falsified by finding a pre-existing pump-station commissioning method that already requires all of the following for an unexplained field oscillation: a fixed observation packet separated from interpretation, cross-subsystem live rivals, preregistered ordering and spatial-propagation predictions, an authorized reversible excitation, explicit nearest-rival comparison, permission for an unresolved tie, and an action-limited conclusion with reopening triggers. It would also fail empirically if a completed pilot record did not let an independent reviewer recover those elements or if the pulse yielded no ranking-relevant observation.","contrastive_claim_remaining":"Relative to the retained troubleshooting, laboratory, transient-analysis, and VFD-maintenance precedents, the remaining testable distinction is the integration of a fixed observation packet, a cross-subsystem rival ledger, preregistered temporal and spatial discriminators, and one authority-bounded reversible pulse whose output must be either an action-limited working explanation or an explicitly unresolved ranked tie.","experiment_id":"eoa_inverse_innovation_exp13_second_slot_policy60_20260806","gates":{"adequate_source_search":{"rationale":"The bounded search covered the proposal name and direct problem, hunting and other historical terminology, commissioning products and official practices, and combinations involving low flow, valves, sensors, VFD control, multipoint measurements, and transient tests. Four opened direct sources span four publishers and include first-party, primary-research, and official-guidance material. The exact proposal-name search produced no match, but the disposition relies on component and practice searches rather than that phrase miss.","source_ids":["SRC1","SRC2","SRC3","SRC4"],"status":"PASS"},"bounded_next_test":{"rationale":"One approved pulse followed by immediate restoration is temporally and operationally bounded. Multipoint high-rate measurements and gentle transient tests have direct precedents, while official guidance supports trending drive and hydraulic variables during qualified diagnostic work. Clock alignment, calibration, state identity, test-port integrity, approved limits, and abort thresholds remain prerequisites.","source_ids":["SRC1","SRC2","SRC3","SRC4"],"status":"PASS"},"distinct_testable_claim":{"rationale":"The retained sources separately disclose multi-cause troubleshooting, controlled multipoint measurement, commissioning transient investigation, diagnostic logging, and safety-qualified testing, but none requires their claimed combination of cross-subsystem rival preservation, registered sequence and propagation predictions, nearest-rival discrimination, and a mandatory action-limited result or tie. A completed harness can be inspected and compared against ordinary commissioning records.","source_ids":["SRC1","SRC2","SRC3","SRC4"],"status":"PASS"},"no_obvious_safety_or_authority_stop":{"rationale":"No source indicates that a reversible commissioning maneuver is categorically impermissible. Existing practice includes gentle transient field testing and controlled laboratory flow changes, while PNNL requires applicable safety recommendations and qualified personnel. The proposed operator approval, hydraulic envelope, abort limits, unchanged protective functions, and restoration requirement are therefore essential conditions rather than an obvious stop.","source_ids":["SRC1","SRC2","SRC3","SRC4"],"status":"PASS"},"supported_problem":{"rationale":"First-party troubleshooting explicitly recognizes erratic booster-station cycling or hunting at low demand and lists several observationally confusable causes spanning demand sizing, inlet pressure, tanks, transmitters, leaks, and check valves. Primary experiments independently show persistent low-flow pressure oscillation from valve behavior, and a pump-station case shows that commissioning transients may require detailed measurements and model validation to identify their cause.","source_ids":["SRC1","SRC2","SRC3"],"status":"PASS"}},"prior_art_disposition":"ADJACENT_PRIOR_ART","problem_evidence":{"finding":"The general problem class is visible: low-demand pressure instability can arise from multiple control, measurement, mechanical, and hydraulic mechanisms, and coarse symptom-based troubleshooting does not itself establish which mechanism initiated a particular post-retrofit trace. The exact stated post-retrofit station event was not independently documented by the retained sources.","source_ids":["SRC1","SRC2","SRC3"],"status":"PARTLY_SUPPORTED"},"research_id":"eoa_inverse_innovation_exp13_light_screen_20260806","schema_version":1,"screen_id":"E13P042","screen_survival":true,"search_lanes":{"component_combination":{"no_result_note":null,"queries":["hydraulic transient field test synchronized pressure sensors pump station diagnosis","pump system root cause analysis transient data acquisition synchronized pressure sensors check valve field test","\"pressure oscillations\" \"variable-speed pump\" water distribution experiment"],"source_ids":["SRC2","SRC3"]},"direct_problem_and_intervention":{"no_result_note":"The exact phrase \"Commissioning Hypothesis Harness\" produced no direct result in the bounded search; this phrase miss was not treated as novelty evidence.","queries":["\"Commissioning Hypothesis Harness\" pump station","variable speed booster pump low demand pressure oscillation controller interaction troubleshooting synchronized pressure measurements","commissioning pump station discriminating test competing causes synchronized measurements"],"source_ids":["SRC1","SRC2","SRC3"]},"products_practices_and_standards":{"no_result_note":null,"queries":["commissioning functional performance test variable speed pumping setpoint step response official guideline","water pumping station commissioning standard variable speed test pressure setpoint pulse","site:gov pump station commissioning variable speed drive testing standard water"],"source_ids":["SRC1","SRC3","SRC4"]},"synonyms_and_historical_terms":{"no_result_note":null,"queries":["booster pump \"hunting\" low demand transducer check valve VFD","pump station hunting surge low flow variable frequency drive pressure control check valve chatter","pump pressure oscillation fault diagnosis competing hypotheses field measurements pressure flow vibration controller command"],"source_ids":["SRC1","SRC2","SRC3"]}},"sources":[{"claims_supported":["Packaged booster stations can cycle or hunt erratically at low demand.","Potential causes include oversized pumps, fluctuating inlet pressure, leaks, diaphragm-tank faults, faulty pressure transducers, and malfunctioning check valves.","Commissioning and operation are subject to equipment pressure limits and safety precautions."],"publisher":"Xylem Applied Water Systems / Bell & Gossett","source_id":"SRC1","source_type":"FIRST_PARTY_PRODUCT","title":"TECHNOForce e-HV Mechanical Installation, Operation, and Maintenance Manual","url":"https://documentlibrary.xylemappliedwater.com/wp-content/blogs.dir/22/files/2016/03/10-001-287_4_en.US_2019-03_IOM_TechnoForce_e-HV.pdf"},{"claims_supported":["A piston-actuated pressure-reducing valve can exhibit significant persistent pressure oscillation under low-flow conditions.","The experiment used a controlled flow-rate reduction and monitored upstream, downstream, and maneuver-section pressure plus flow at 100 Hz.","The observed behavior varied materially by final flow rate, supporting operating-state-specific discrimination."],"publisher":"MDPI Sciforum / University of Ferrara","source_id":"SRC2","source_type":"PRIMARY_RESEARCH","title":"Laboratory Analysis of a Piston Actuated Pressure Reducing Valve under Low Flow Conditions","url":"https://sciforum.net/manuscripts/6444/manuscript.pdf"},{"claims_supported":["A severe pump-station transient discovered during commissioning was investigated using detailed pressure and flow measurements under gentle transient conditions.","A numerical model was verified against field measurements before column separation was identified as the cause.","The investigation produced a valve-operating protocol intended to avoid unacceptable transients."],"publisher":"Monash University research portal; original proceedings publisher American Society of Civil Engineers","source_id":"SRC3","source_type":"PRIMARY_RESEARCH","title":"Investigation of Severe Water Hammer in a Large Pump Station: Case Study","url":"https://research.monash.edu/en/publications/investigation-of-severe-water-hammer-in-a-large-pump-station-case/"},{"claims_supported":["VFD performance monitoring can trend output frequency, amperage, energy, and controlled fluid pressure.","Diagnostics should identify root cause before an event is reset, and a written log should preserve diagnostics, findings, and corrective actions.","Testing and maintenance should follow safety recommendations and be performed by qualified personnel."],"publisher":"Pacific Northwest National Laboratory","source_id":"SRC4","source_type":"OFFICIAL_GUIDANCE","title":"Best Practices for Variable Speed Drives Operation and Maintenance","url":"https://www.pnnl.gov/projects/om-best-practices/variable-speed-drives"}],"world_novelty_boundary":"This coarse public-web screen found adjacent precedents for every major component but no retained source requiring the full claimed commissioning combination. That result supports only bounded researchability and an adjacent-prior-art disposition; it does not establish world novelty, patentability, market size, expert acceptance, realized value, or absence of closer proprietary, paywalled, non-English, standards-library, or patent material."}