{"closest_prior_art":[{"name":"NASA PRC-0016 qualification-lot and preproduction weld verification","overlap":"Requires fixed welding settings for a qualification lot, destructive peel and metallurgical testing, documented failures, requalification after unexplained preproduction failures, and a tested preproduction weld before production.","remaining_difference":"It concerns laser-welded battery assemblies and does not describe material physically withheld throughout exploratory procedure selection, a post-selection freeze, independent remanufacture by a different welder, or a complete fresh-lot pressure-vessel mechanical-test matrix.","source_ids":["SRC3"]},{"name":"ASME Section IX Form QW-483 procedure qualification record","overlap":"Records actual test-coupon variables, tensile, toughness, bend, macro/other results, specimen numbers, notch locations, failure locations, welder identity, and testing laboratory.","remaining_difference":"The form documents a qualification coupon but does not itself establish a discovery-family inventory, locked untouched confirmation stock, or mandatory independent fresh-lot confirmation after selecting among development trials.","source_ids":["SRC2"]},{"name":"PHMSA/PRCI all-weld-metal tensile-test protocol research","overlap":"Shows that weld-property measurements depend on specimen location, geometry, welding practice, alignment, and other unresolved factors; appreciable scatter remained even under controlled conditions.","remaining_difference":"It improves measurement consistency and representativeness rather than controlling selection among many procedures and specimen locations through a physically held-out confirmation lot.","source_ids":["SRC1"]},{"name":"NIST multiple-comparison guidance","overlap":"Warns that repeated pairwise comparisons do not preserve the stated overall significance level and recommends defining contrasts before observing results or using multiplicity-aware procedures.","remaining_difference":"It is statistical design guidance, not a physical weld-qualification system with sequestered material, independent fabrication, retained specimens, and destructive confirmation.","source_ids":["SRC4"]}],"contrastive_claim_falsifier":"The contrast would be falsified by an applicable pressure-vessel qualification rule or established practice that already requires, after exploratory selection, physically sequestered untouched stock, frozen parameters and specimen locations, independent fresh-lot fabrication, complete reporting, and passage of the entire predefined destructive matrix before production approval. It would also be empirically weakened if an audited shadow campaign showed that the proposed separation did not prevent reuse, substitution, outcome omission, or post-selection matrix changes.","contrastive_claim_remaining":"Unlike the located statistical guidance, measurement protocols, ordinary PQR documentation, and preproduction weld checks, the proposal makes a search-selected pressure-vessel procedure merely exploratory until untouched stock is released after nomination, a different qualified welder creates a fresh realization, and every position in a frozen destructive-test matrix passes.","experiment_id":"eoa_inverse_innovation_exp13_second_slot_policy60_20260806","gates":{"adequate_source_search":{"rationale":"Four search lanes covered the exact intervention, welding synonyms and historical qualification terms, standards and preproduction practices, and combinations of multiplicity, specimen-location variability, fresh lots, and destructive verification. Exactly four opened sources from four publishers were retained, including primary research and official sources. No exact paired-lot pressure-vessel implementation appeared in this bounded search.","source_ids":["SRC1","SRC2","SRC3","SRC4"],"status":"PASS"},"bounded_next_test":{"rationale":"A single non-production shadow campaign with a serialized discovery rack, sealed material for one confirmation lot, a frozen matrix, and comparison of baseline versus fresh-lot conclusions is finite and observable. Existing qualification and verification sources show that controlled lots, recorded variables, destructive tests, and preproduction checks are operationally feasible.","source_ids":["SRC2","SRC3"],"status":"PASS"},"distinct_testable_claim":{"rationale":"The retained art separately covers measurement variability, multiplicity control, detailed PQRs, qualification lots, and destructive preproduction verification, but not their proposed post-selection physical holdout and independent fresh-lot combination. Seal state, identities, frozen records, complete results, and baseline-confirmation divergence make the contrast testable.","source_ids":["SRC1","SRC2","SRC3","SRC4"],"status":"PASS"},"no_obvious_safety_or_authority_stop":{"rationale":"The authorized step is shadow-only, retains the currently qualified procedure, and reserves production approval for the design authority. The proposal expressly does not replace code compliance, qualification, fracture assessment, calibration, or traceability; contamination or protocol changes invalidate confirmation and trigger rollback.","source_ids":["SRC2","SRC3"],"status":"PASS"},"supported_problem":{"rationale":"The exact frequency of search-favored pressure-vessel procedures entering production was not located, but the mechanism is supported: weld tensile measurements vary materially with specimen location and test conditions, while NIST states that repeated comparisons change overall error and that comparisons chosen after observing data need multiplicity-aware treatment.","source_ids":["SRC1","SRC4"],"status":"PASS"}},"prior_art_disposition":"ADJACENT_PRIOR_ART","problem_evidence":{"finding":"PARTLY SUPPORTED: Primary weld research documents substantial specimen-location, fabrication, and measurement variability, including unexpected scatter under nominally controlled conditions. Official NIST guidance establishes the general selection/multiple-comparison risk. The search did not directly document how often pressure-vessel organizations choose the most favorable procedure or omit the broader trial family.","source_ids":["SRC1","SRC4"],"status":"PARTLY_SUPPORTED"},"research_id":"eoa_inverse_innovation_exp13_light_screen_20260806","schema_version":1,"screen_id":"E13P177","screen_survival":true,"search_lanes":{"component_combination":{"no_result_note":"No retained source combined exploratory weld selection, locked untouched material, a different welder, and a frozen full destructive matrix; the sources instead covered the components separately.","queries":["weld procedure development holdout material confirmation lot preregistered destructive test matrix","multiple comparisons weld procedure qualification","weld mechanical test specimen location variability impact toughness qualification"],"source_ids":["SRC1","SRC3","SRC4"]},"direct_problem_and_intervention":{"no_result_note":"No exact Paired-Lot Destructive Confirmation Cell or equivalent pressure-vessel implementation was found; results addressed ordinary qualification, measurement variability, or preproduction verification.","queries":["weld procedure qualification multiple trials best results selection bias destructive testing specimen location retest","weld procedure qualification fresh test coupon independent verification retest ASME Section IX"],"source_ids":["SRC1","SRC2","SRC3","SRC4"]},"products_practices_and_standards":{"no_result_note":null,"queries":["pressure vessel weld procedure qualification repeat test coupon retest complete set","weld procedure qualification production test coupon destructive testing independent","NASA preproduction welding system verification destructive testing"],"source_ids":["SRC2","SRC3"]},"synonyms_and_historical_terms":{"no_result_note":"Searches found verification tests, production test coupons, PQR/WPQR, qualification lots, requalification, and preproduction samples, but not a historical term denoting the complete proposed holdout design.","queries":["welding confirmation test procedure qualification fresh coupon","weld procedure qualification verification test separate test assembly destructive","weld procedure qualification production test coupon independent"],"source_ids":["SRC2","SRC3"]}},"sources":[{"claims_supported":["Weld-property measurements can vary with specimen position, specimen form, welding practice, fixture alignment, and unresolved factors.","Specimen location was a primary influence on several measured strength properties, and appreciable scatter occurred even with a single wire electrode under controlled conditions.","A standardized test protocol was developed to improve consistency and reliability."],"publisher":"Pipeline Research Council International, sponsored by U.S. DOT PHMSA","source_id":"SRC1","source_type":"PRIMARY_RESEARCH","title":"Background of All-Weld Metal Tensile Test Protocol (Report 277-T-02)","url":"https://primis.phmsa.dot.gov/rd/FileGet/7326/PHMSA_Project_DTPH56-07-000005_Final_Report_277-T-02_Background_of_AWM_Tensile_Test_Protocol.pdf"},{"claims_supported":["The Section IX PQR format records actual variables used to weld a test coupon.","It provides fields for tensile, toughness, guided-bend, fillet-weld, macro, and other tests, including specimen and location information.","The record includes welder, testing organization, laboratory number, and certification fields."],"publisher":"American Society of Mechanical Engineers","source_id":"SRC2","source_type":"OFFICIAL_STANDARD","title":"BPVC Section IX Form QW-483: Suggested Format for Procedure Qualification Records","url":"https://www.asme.org/getmedia/b832dba9-6112-4d69-9bd2-dfc835adc5e6/bpvc_ix_qw-483-2019.pdf"},{"claims_supported":["An initial welding-procedure qualification uses a fixed-settings lot of sixteen samples evaluated by visual, conductivity, destructive peel, and metallurgical examinations.","Failures can require further parameter development and submission of another sample lot.","A destructively tested preproduction weld is required before a production run, with renewed checks after specified changes or delays."],"publisher":"NASA Johnson Space Center","source_id":"SRC3","source_type":"OFFICIAL_STANDARD","title":"PRC-0016: Process Specification for the Laser Welding of Battery Assemblies","url":"https://www.nasa.gov/wp-content/uploads/2023/03/prc-0016-current-0.pdf"},{"claims_supported":["Repeated pairwise comparisons do not generally preserve the significance level stated for a single comparison.","Contrasts selected after observing results require appropriate multiple-comparison procedures.","Defining contrasts in advance is one way to preserve interpretable confidence levels."],"publisher":"National Institute of Standards and Technology","source_id":"SRC4","source_type":"OFFICIAL_GUIDANCE","title":"NIST/SEMATECH e-Handbook of Statistical Methods: How Can We Make Multiple Comparisons?","url":"https://www.itl.nist.gov/div898/handbook/prc/section4/prc47.htm"}],"world_novelty_boundary":"This bounded public-web screen found adjacent components but no exact combination. It cannot establish world novelty, patentability, market size, expert acceptance, code acceptability across jurisdictions, or realized safety or economic value."}