Engineering Critical Assessment
A live ECA workbench, built like the standards you cite.
Run FAD, fatigue, master-curve and probabilistic assessments side-by-side — every figure traceable to BS 7910, API 579 and ASTM E1921, every report defensible to a chartered reviewer.
Assessments
25tabs total
Standards
4+ 8 annexes
Benchmarks
12/ 12 pass
Start free
BS 7910:2019 · API 579 · R6 · ASTM E1921
FAD · Opt 1
Fatigue
Master curve
Creep
FIG.01 · Failure Assessment Diagram
WARN · 8%
VERDICTACCEPT
MARGIN8.4%
POINTS4 / 4 evaluated
FIG.02 · Master curve · T₀ = −68°C
PASS
QUEUE · assessment pipeline
4 ACTIVE
JOB-0038 · FAD · welded nozzleACCEPT · 23%
JOB-0039 · LBB · 16″ pipeACCEPT · LBB 2.4
JOB-0040 · Fatigue · rainflowWARN · 14%
JOB-0041 · Creep · 50,000 hACCEPT · margin 31%
JOB-0042 · FAD · surface flawRUNNING · 73%
Twelve flagship assessments, one workbench — each defensible to a chartered reviewer.
FAD Options 1, 2
BS 7910 §7 / Annex O
Failure assessment diagrams for both general and material-specific cases. Supports proof-test relaxation per Annex O.
Fatigue + Rainflow
ASTM E1049 / BS 7910 §8
Paris-law crack growth, ASTM E1049 rainflow counting, Palmgren–Miner cumulative damage, variable-amplitude loading.
Master Curve & T₀
ASTM E1921 / Annex L
ASTM E1921 KJc analysis with multi-temperature MML T₀ determination from your own fracture data.
Creep with Norton fit
API 579 Pt 10
C* approach plus Norton’s law parameter fitting from strain–time data, stress-rupture predictions.
30-geometry SIF library
BS 7910 Annex M
Plate, pipe, vessel and welded-joint SIF solutions covering Annex M and beyond.
Probabilistic + sensitivity
BS 7910 Annex K
Monte Carlo reliability per Annex K with full input distributions, plus single-variable sensitivity sweeps.
Leak-Before-Break
BS 7910 Annex F
Annex F LBB ratios with through-wall propagation modelling for pressure components.
Batch assessment
CSV / Excel
CSV-driven batch FAD evaluation with per-flaw reports and Excel-friendly exports.
Validation suite
Newman–Raju / Folias
12 published benchmark cases run on every release — BS 7910 worked examples, Newman–Raju, Folias, ASTM E1921 X1.
Recharacterization
BS 7910 Annex E
Idealise irregular real flaws into semi-elliptical, embedded, or through-thickness equivalents per Annex E.
Residual stress
BS 7910 Annex Q
Through-thickness residual stress profiles for welded joints, with custom profile import.
Reports / Export
PDF · CSV · JSON
Signed-off engineering reports as PDF, plus CSV and JSON exports for downstream tooling.
Up-to-date with the revisions you cite.
| Standard | Description | Coverage | Revision |
|---|---|---|---|
BS 7910:2019 | Guide to methods for assessing the acceptability of flaws in metallic structures | Core methods §6–§8 | 2019 — current |
API 579-1 / ASME FFS-1 | Fitness-For-Service procedures for in-service equipment | FFS Part 9 + 10 | 3rd ed. 2016 |
R6 Revision 4 | Assessment of the integrity of structures containing defects | Full revision | Rev 4 (2014) |
ASTM E1921 | Reference temperature T₀ for ferritic steels in the transition range | Annex L workflow | 2024 |
BS 7910 Annex E | Recharacterization of embedded, surface, and through-thickness flaws | Annex E recharacter. | 2019 |
BS 7910 Annex L | Determining T₀ from fracture toughness test data | Annex L · T₀ fit | 2019 |
BS 7910 Annex M | Stress intensity factor solutions for cracked geometries | Annex M · 30 geom. | 2019 |
BS 7910 Annex Q | Residual stress profiles for welded joints | Annex Q profiles | 2019 |
Start free. Upgrade when you need batch, reports, or seats.
Tier 01
Explorer
£0
FOREVER · FREE
1 seat
Try the platform with a single FAD Option 1 assessment + the SIF library. 2 of 25 tabs accessible.
- FAD Option 1 (deterministic)
- SIF library (30 geometries)
- Community support
Most popular
Tier 02
Pro
£1,990
PER YEAR · 1 SEAT
SAVE ~17% · 2 months free vs monthly
For the solo integrity engineer — every module, batch CSV, PDF reports.
- All FAD options (1 & 2)
- Fatigue · creep · LBB
- Master Curve · T₀ · MOTE
- Monte Carlo (100,000 sims)
- Batch CSV · PDF / JSON
Tier 03
Pro Lite
£8,490
PER YEAR · 5 SEATS · £142/USER
SAVE ~17% · 2 months free vs monthly
For small teams. Everything in Pro × 5, with 1-hour onboarding and priority support.
- Everything in Pro
- 5 user seats
- Batch CSV (100 flaws)
- Priority support (24h)
- 1-hour onboarding
Tier 04
Pro Max
£13,990
PER YEAR · 10 SEATS · £117/USER
SAVE ~17% · 2 months free vs monthly
For larger teams. Dedicated AM + 2-hour training + Slack/Teams channel.
- Everything in Pro Lite
- 10 user seats
- Unlimited batch
- Dedicated account manager
- 2-hour training + manual
Pro Max+ — 10+ seats, custom contracts, SSO
Volume discount, bespoke features, on-site training. Pricing is negotiated for fleet operators and multi-site consultancies.
Every capability, line by line.
| Feature | Explorer£0 | Pro£199 / mo | Pro Lite£849 / mo | Pro Max£1,399 / mo |
|---|---|---|---|---|
| Access | ||||
| Tabs accessible | 2 of 25 | All 25 | All 25 | All 25 |
| Concurrent users | 1 | 1 | 5 | 10 |
| Onboarding training | — | — | 1-hour session | 2-hour + manual |
| Support | Community | Email (48h) | Priority (24h) | Priority + dedicated AM |
| Core assessment | ||||
| FAD Options | Option 1 | Options 1 & 2 | Options 1 & 2 | Options 1 & 2 |
| Annex N (3 constraint methods) | — | |||
| SIF Library (30 geometries) | ||||
| Mismatch dual FAD (Annex I) | — | |||
| Biaxial & misalignment corrections | — | |||
| Material characterisation | ||||
| 5 Charpy-to-Kmat correlations | — | |||
| Master Curve & T₀ from tests | — | |||
| MOTE (§7.1.7) | — | |||
| Fatigue & creep | ||||
| 7 fatigue environments (Table 8.1) | — | |||
| Walker equation (γ correction) | — | |||
| Rainflow cycle counting | — | |||
| Creep CCG | — | |||
| LBB with Bernoulli flow (Annex F) | — | |||
| Probabilistic & decision support | ||||
| Monte Carlo (100,000 simulations) | — | |||
| Critical Crack Size + Inspection Plan | — | |||
| Batch assessment (CSV / paste) | — | 50 | 100 | Unlimited |
| Sensitivity (7 parameters, auto-fill) | — | |||
| Reports & I/O | ||||
| PDF reports with sign-off block | ||||
| CSV export (incl. FAL curve data) | ||||
| Paste from Excel (all data tables) | — | |||
| Session save + JSON backup | — | |||
| Other | ||||
| 30-point validation suite | — | |||
| Dark mode | ||||
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