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Fixture Coverage — Every Module, Every Locked Case

Generated from the live fixture directory at every build (2026-09-03) — this table cannot go stale. 87 fixture files, 268 locked cases, one per row below with its governing reference and the tightest tolerance asserted, grouped by code family.

Reproduce it yourself from the repository with bare Node — no installation:

node scripts/verify-core.mjs

Process & Power Piping — ASME B31.1 / B31.3 (12 modules)

Module	Governing method / reference	Cases	Verdicts locked	Max tol
`piping.b31-allowable-pressure`	ASME B31.3 ¶304.1.2 Eq. (3a), solved for P (B31.12 Mf supported)	1	1 computed	0.001
`piping.b31-sif`	ASME B31.3 Appendix D Table D300 closed forms (elbow: ii=0.9/h^⅔, io=0.75/h^⅔; welding tee: io=0.9/h^⅔, ii=0.75·io+0.25)	2	2 computed	0.00001
`piping.b311-wall-thickness`	ASME B31.1 ¶104.1.2 (also B31.5/B31.9 form)	2	2 computed	0.00001
`piping.b313-wall-thickness`	ASME B31.3 ¶304.1.2 Eq. (3a)	3	3 computed	0.00001
`piping.b31j-sif`	ASME B31J-2023 Table 1-1 (full sketch catalog 1.1–5.1: bends/miters, six branch types, reducer, welds, flanges, threaded), Table 1-2 stiffnesses, Table 1-3 flanged-end coefficients, General Note (d) sustained factors — the i/k source B31.1-2024 and B31.3 now reference in place of Appendix D	21	21 computed	1
`piping.bend-thickness`	ASME B31.3 ¶304.2.1 / B31.1 ¶102.4.5 (I-factor)	1	1 computed	0.0001
`piping.branch-reinforcement`	ASME B31.3 ¶304.3.3 area replacement	2	1 pass, 1 fail	0.0001
`piping.displacement-stress`	ASME B31.3 ¶319.4.4 Eq. (17); ¶302.3.5(d) Eq. (1a)	1	1 pass	0.01
`piping.fatigue-factor`	ASME B31.3 ¶302.3.5(d): f = 6·N^(−0.2), equivalent cycles Σ Ni·ri⁵	2	2 computed	0.00001
`piping.leak-test-pressure`	ASME B31.3 ¶345.4.2 Eq. (24) / ¶345.5.4; B31.1 ¶137.4.5 via factors	1	1 computed	0.001
`piping.miter-allowable-pressure`	ASME B31.3 ¶304.2.3 Eq. (4a)/(4b)/(4c)	1	1 computed	0.001
`piping.sustained-stress`	ASME B31.3 ¶302.3.5(c) sqrt-form; B31.1 additive form; occasional k·Sh	2	2 pass	0.01

Pipelines & Integrity — B31.4 / B31.8 / B31G / DNV-RP-F101 (10 modules)

Module	Governing method / reference	Cases	Verdicts locked	Max tol
`pipeline.b31-allowable-pressure`	ASME B31.4/.8/.11 barlow SMYS·F·E·T, solved for P	1	1 computed	0.001
`pipeline.b31-wall-thickness`	ASME B31.4 ¶402.3 / B31.8 ¶841.1 / B31.11 (SMYS·F·E·T)	3	3 computed	0.00001
`pipeline.b31g`	ASME B31G-2012 — original (2/3 dL parabolic) and Modified (0.85 dL) with ERF = MAOP/Psafe	4	2 pass, 2 fail	0.001
`pipeline.charpy-arrest`	Battelle/AGA ductile fracture arrest correlation CVN = 0.0108·σh²·(R·t)^⅓, per the ASME B31.8 ¶841.1.2 basis	2	1 pass, 1 fail	0.001
`pipeline.dent-screening`	ASME B31.8 ¶851.4 / B31.4 ¶451.6 plain-dent depth as %OD (acceptance limit user-supplied)	2	1 pass, 1 fail	0.001
`pipeline.dnv-f101-defect`	DNV-RP-F101 Part B single-defect capacity: Q length correction, Pcap on tensile fu, usage factor user-supplied	2	1 pass, 1 computed	0.05
`pipeline.erosional-velocity`	API RP 14E ¶2.5 erosional velocity Ve = C/√ρm (C by service, user-supplied); actual V = 0.4085·Q/d²	2	1 pass, 1 computed	0.001
`pipeline.hydrotest`	ASME B31.4 ¶437.4.1 / B31.8 ¶841.3 — Pt = factor·P with Barlow hoop at test against the %SMYS cap (both factors user-supplied)	2	1 pass, 1 fail	0.001
`pipeline.maop`	ASME B31.8 ¶845.2.2 / B31.4 ¶403 — lowest of pipe design pressure, test-qualified pressure Pt/factor, and component/historical cap	3	3 computed	0.001
`pipeline.slurry-velocity`	Durand–Condolios critical deposition velocity (ASME B31.11 heritage / B31.4 slurry chapters require operation above VD; FL user-supplied)	2	1 pass, 1 fail	0.001

BPE / Hygienic Tubing (13 modules)

Module	Governing method / reference	Cases	Verdicts locked	Max tol
`bpe.fitting-dimensions`	ASME BPE-2026 Part DT-4.1 fitting-dimension tables (elbows, tees, reducers, ferrules, caps)	10	1 fail, 9 computed	0.000001
`bpe.unit-converter`	ASME BPE App. U units incl. Ra & slope	11		1e-9
`bpe.cip-velocity`	ASME BPE SD-6.3.5.2.1 (5 ft/s practice)	3	1 pass, 2 computed	0.01
`bpe.dead-leg`	ASME BPE SD-3.1.2.2 (L/d target 2)	5	3 pass, 2 fail	1e-9
`bpe.ep-passivation`	ASME BPE App. H (electropolish) / App. E (passivation)	2	1 pass, 1 fail	0.001
`bpe.ferrite-number`	WRC-1992 (Kotecki–Siewert) FN diagram, per BPE App. G	2	1 pass, 1 fail	0.001
`bpe.polymer-thermal-expansion`	ASME BPE PM-4.2.3 polymer thermal expansion	2	2 computed	0.001
`bpe.pre-pren`	ASME BPE App. F-3 PRE/PREN classification	3	3 computed	0.001
`bpe.ra-finish`	ASME BPE Table SF-2.4.1-1 Ra acceptance	2	1 pass, 1 fail	0.001
`bpe.slope-check`	ASME BPE SD-2.4.3 GSD designations	4	2 pass, 2 fail	0.00001
`bpe.slope-report`	ASME BPE SD-2.4.3 — per-segment drainability classification	3	2 pass, 1 fail	0.00001
`bpe.spray-flow`	ASME BPE SD-3.9.2 coverage-rate practice	3	3 computed	0.001
`bpe.tube-weld-acceptance`	ASME BPE Table MJ-8.4-1 weld acceptance	2	1 pass, 1 fail	0.001

Thermal Flexibility (2 modules)

Module	Governing method / reference	Cases	Verdicts locked	Max tol
`flexibility.expansion-interpolation`	Linear interpolation between two user-entered thermal-expansion table rows (ASME B31.3 Table C-1 / B31.1 App. B style, in/100 ft)	1	1 computed	1e-9
`flexibility.expansion-loop`	Guided cantilever √(3EDΔL/kS) — Kellogg / PPI forms	5	5 computed	0.005

Flanges, Branches & Nozzle Connections (8 modules)

Module	Governing method / reference	Cases	Verdicts locked	Max tol
`connections.api610-annexf`	API 610 13th Ed. Annex F: F.1–F.5 horizontal-pump interaction and resolution-to-center equations; F.6–F.11 vertical in-line principal-stress criteria (allowable loads user-supplied or from the Table 5a/5b preset picker)	4	3 pass, 1 fail	0.0001
`connections.b165-dimensions`	ASME B16.5-2017 Mandatory App. II facing/drilling Tables II-7…II-22 + Table 9 hub X/Y; ASME B16.20-2017 Table SW-2.1-1 gasket ID/OD (data embedded); N, b and G derived per ASME BPVC VIII-1 App. 2 Table 2-5.2 (2025 ed.: VIII-2 Table 4.16.3 width / Figure 4.16.8 reaction location)	12	1 fail, 11 computed	1e-9
`connections.b165-rating`	ASME B16.5-2017 Tables II-2-1.1/2.1/2.2/2.3 and B16.5-2025 Tables 2-1.1C/2-2.1C/2-2.2C/2-2.3C + Section 2 interpolation (both editions embedded; PiperFLG defaults to 2025)	11	2 pass, 2 fail, 7 computed	0.001
`connections.bolt-sequence`	Cross-pattern (star) tightening order by bolt count + multi-pass percentage schedule — standard bolted-joint assembly practice (ASME PCC-1 legacy-pattern guidance, gasket manufacturers' assembly cards); no licensed table values embedded	11	11 computed	1e-9
`connections.en1591-screen`	EN 1591-1 load-balance screening (gasket constants per EN 1591-2, user-supplied)	2	1 pass, 1 fail	0.001
`connections.flange-equivalent-pressure`	Kellogg equivalent-pressure flange check	2	1 pass, 1 fail	0.001
`connections.nema-sm23`	NEMA SM-23 / API 617 combined nozzle-load index	1	1 pass	0.0001
`connections.nozzle-load-check`	Per-component applied vs allowable load comparison	2	1 pass, 1 fail	0.00001

Equipment Nozzle Loads (2 modules)

Module	Governing method / reference	Cases	Verdicts locked	Max tol
`equipment.shell-nozzle-allowables`	ASME VIII-2 5.5 allowable-load assembly (user-supplied WRC-107 chart coefficients)	3	1 pass, 1 fail, 1 computed	0.01
`equipment.shell-nozzle-loads`	WRC-107 / ASME VIII-2 Part 5 local membrane+bending screen	2	1 pass, 1 fail	0.001

Pipe Supports & Spring Hangers (4 modules)

Module	Governing method / reference	Cases	Verdicts locked	Max tol
`supports.compact-spring-select`	PT&P/DST compact-spring catalog selection (derived data)	3	2 pass, 1 fail	1e-9
`supports.max-spring-rate`	Max spring rate for target variability (MSS SP-58)	1	1 computed	0.000001
`supports.spring-variability`	MSS SP-58 variable-spring variability (25% rule)	2	1 pass, 1 fail	0.000001
`supports.variable-spring-select`	PT&P variable-spring catalog selection (derived data)	3	2 pass, 1 fail	1e-9

Support Steel — AISC 360 (5 modules)

Module	Governing method / reference	Cases	Verdicts locked	Max tol
`structural.baseplate-anchorage`	AISC Design Guide 1 base plate + ACI 318-19 Ch. 17 anchorage	4	3 pass, 1 fail	0.0001
`structural.aisc-member`	AISC 360-22 member design (LRFD/ASD): Ch. D/E/F/G/H plus serviceability	14	13 pass, 1 fail	0.0001
`structural.pier-soil`	Pier bearing, soil pressure, overturning, sliding and ACI 318-19 punching shear	3	2 pass, 1 fail	0.0001
`structural.fillet-weld`	AISC 360-22 J2 fillet weld with the J2.4(b) directional strength increase	4	4 pass	0.0001
`structural.trapeze-hanger`	Trapeze/strongback sizing: AISC 360-22 ASD channel check (F2 LTB, G2 shear, deflection), rod on coarse-thread root area (B31.9 ¶921.2.2 practice basis), spacing as min(pipe span, hardware)	2	2 pass	0.000001

Pressure Vessel Checks — BPVC Section VIII (5 modules)

Module	Governing method / reference	Cases	Verdicts locked	Max tol
`vessel.ucs66-mdmt`	ASME BPVC VIII-1-2025 Table UCS-66 / UCS-66(b)/(c)/(d) impact-test exemption, UCS-68.2 PWHT credit (data embedded)	6	4 pass, 2 fail	0.000001
`vessel.ug27-shell`	ASME BPVC VIII-1 UG-27 (shells, MAWP)	1	1 computed	0.00001
`vessel.ug28-external`	ASME BPVC VIII-1 UG-28 external pressure + UG-99 hydrotest	1	1 computed	0.00001
`vessel.ug32-head`	ASME BPVC VIII-1 UG-32 (formed heads)	3	3 computed	0.00001
`vessel.ug37-nozzle-area`	ASME BPVC VIII-1 UG-37 nozzle reinforcement (simplified)	1	1 pass	0.0001

Overpressure & Relief — API 520 / B31.1 App. II (2 modules)

Module	Governing method / reference	Cases	Verdicts locked	Max tol
`psv.api520-sizing`	API Std 520 Part I (10th ed.) sizing equations — Eq. 5/6/12 critical gas, 16/22 subcritical, 25/27/28 steam incl. Napier KN, 32 certified liquid; regime auto-selected from Pcf; fluid properties, C override, KSH and Kv user-supplied from the standard's tables	5	5 computed	0.001
`psv.b311-reaction`	ASME B31.1-2024 Nonmandatory Appendix II — ¶II-2.2.1 exit state, ¶II-2.3.1.1 open-discharge reaction F1 = ṁV1/gc + (P1 − Pa)A1 with ṁ = 1.11 × stamped capacity; DLF applied per ¶II-3.5.1.3 (Table II-2.2.1-1 steam constants embedded)	2	2 computed	0.001

Occasional Loads & Auxiliary Checks (10 modules)

Module	Governing method / reference	Cases	Verdicts locked	Max tol
`aux.app2-flange-integral`	ASME BPVC VIII-1 Mandatory Appendix 2 (integral and loose flange, incl. §2-7.6 hub factors and the §2-14 rigidity index); 2025 ed.: App. 2 revised in its entirety to cross-reference VIII-2 Part 4.16 (§2-7 hub-factor figures -> VIII-2 Tables 4.16.4/4.16.5, §2-14 rigidity -> Table 4.16.10)	6	6 fail	0.005
`aux.app2-flange`	ASME BPVC VIII-1 Mandatory Appendix 2 (loose-type flange); 2025 ed.: App. 2 cross-references VIII-2 Part 4.16 (Table 2-5.1 -> VIII-2 Table 4.16.1, Table 2-6 -> Table 4.16.6, Fig 2-7.1 -> Table 4.16.4)	2	1 pass, 1 fail	0.01
`aux.asce-occasional`	ASCE 7 ASD occasional combination → governing w → M → Socc	2	2 computed	0.01
`aux.b31e-seismic`	ASME B31E seismic design force	2	2 computed	0.000001
`aux.column-buckling`	Euler elastic column buckling	1	1 computed	0.01
`aux.pressure-thrust`	EJMA pressure-thrust force	1	1 computed	0.0001
`aux.snow-ice-load`	ASCE 7 Ch. 10 atmospheric ice / Ch. 7 snow, applied as a radial ice annulus and a projected-width snow line load (density and pf user-supplied)	2	2 computed	0.01
`aux.water-hammer`	Joukowsky surge ΔP = ρ·a·ΔV/(144·g) with elastic pipe-wall wave-speed correction; critical closure period 2L/a	2	2 computed	0.05
`aux.wind-asce`	ASCE 7 wind force on piping	1	1 computed	0.001
`aux.wrc-terms`	WRC 107/537 non-dimensional stress terms	1	1 computed	0.000001

Nonmetallic / Plastic Pipe (4 modules)

Module	Governing method / reference	Cases	Verdicts locked	Max tol
`nonmetallic.frp-grp`	ASME NM-2 / ISO 14692 / BS 7159 FRP-GRP checks	3	2 pass, 1 fail	0.01
`nonmetallic.hdpe-n755`	ASME Code Case N-755 HDPE rules	2	1 pass, 1 fail	0.001
`nonmetallic.hdpe-pressure-rating`	PPI TR-4 DR pressure-rating form	1	1 computed	0.00001
`nonmetallic.support-span`	Deflection-limited support span (beam form)	1	1 computed	0.001

General Engineering (Non-Code) Tools (6 modules)

Module	Governing method / reference	Cases	Verdicts locked	Max tol
`noncode.collapse-pressure`	Thin-wall theoretical elastic collapse (non-code screen)	1	1 computed	0.01
`noncode.interpolate`	Linear interpolation utility	1	1 computed	0.000001
`noncode.pipe-section`	Steel pipe section properties (non-code)	1	1 computed	0.0001
`noncode.pipe-weight`	Pipe + lining + insulation + contents weight (non-code)	1	1 computed	0.001
`noncode.rolling-offset`	3-D rolling-offset trigonometry (non-code)	1	1 computed	0.001
`noncode.thermal-growth`	in/100 ft tabulated expansion method	2	2 computed	0.000001

General Utilities (4 modules)

Module	Governing method / reference	Cases	Verdicts locked	Max tol
`general.aisc-member-check`	AISC 360 (ASD): E3 compression, D2 tension, F2 flexure, H1-1 interaction	2	2 pass	0.001
`general.analysis-set`	ASME B31.1/B31.3 sustained+expansion and B31.4/B31.8 hoop/longitudinal/combined, per-code allowable factors	2	1 pass, 1 fail	0.001
`general.criticality`	Engineering-judgment criticality screening (API 580/581 RBI spirit; explicit editable rubric)	3	3 computed	0
`general.ejma-rating`	EJMA-framework bellows screening: effective area, pressure thrust, spring loads, column squirm	2	1 pass, 1 fail	0.001

Verdict-path coverage matters as much as arithmetic: fail cases lock the rejection logic (e.g. B31G de-rate, branch-reinforcement shortfall) so a regression cannot quietly turn a FAIL into a PASS. See the validation methodology for the derivation policy behind every expected value.