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Engineering Change & Plant Life
14 tools for engineering changes to an operating plant and plant-life decisions: change impact, repair or replace, obsolescence, operating envelope and margins, fatigue, wall thinning and degradation, design basis and long-term operation, temporary configurations, control software changes, post-modification closeout and maintenance and test intervals.
Design Change Impact Mapper Maps first- and second-order consequences of an engineering change into areas, actions, evidence and closure, with screening, edge provenance and approval state. Benchmark tested · 161/161 · Stages: Basic engineering , Detailed engineering , Procurement , Manufacture & FAT , Construction & installation , Commissioning , Operation & maintenance · Benchmark report EN UA DE NL FR ES PL
Repair / Refurbish / Replace / Upgrade Compares continue, repair, refurbish, replace and upgrade on one horizon as the present value of their costs, with yearly cash flows, sensitivity and switch-over thresholds. Benchmark tested · 85/85 · Stages: Operation & maintenance · Benchmark report EN UA DE NL FR ES PL
Obsolescence & Last-Time-Buy Sizes a last-time-buy of spares against a coverage probability and shows when a replacement programme must start. Benchmark tested · 111/111 · Stages: Procurement , Operation & maintenance · Benchmark report EN UA DE NL FR ES PL
Operating Envelope Change & Margin Consumer Checks before/after operating conditions against explicit engineering limits, preserves uncertainty and applicability, and identifies which boundaries need follow-up. Benchmark tested · 102/102 · Stages: Basic engineering , Detailed engineering , Operation & maintenance · Benchmark report EN UA DE NL FR ES PL
Cycling & Fatigue Life Calculates cumulative fatigue usage by transient group and projects CUF for future cycling scenarios, with bounded optional environmental correction. Benchmark tested · 110/110 · Stages: Detailed engineering , Operation & maintenance · Benchmark report EN UA DE NL FR ES PL
Wall Thinning Trender Trend comparable thickness measurements, quantify uncertainty and estimate when a supplied minimum thickness may be reached. Benchmark tested · 110/110 · Stages: Operation & maintenance · Benchmark report EN UA DE NL FR ES PL
Degradation Life Projector Applicability-gated screening forecasts for cable, concrete and elastomer ageing, with traceable inputs and explicit no-forecast outcomes. Benchmark tested · 134/134 · Stages: Operation & maintenance · Benchmark report EN UA DE NL FR ES PL
Design Basis Integrity & LTO Trace requirements, as-built configuration, evidence and long-term-operation ageing reviews; expose gaps without turning unknown data into favourable conclusions. Benchmark tested · 147/147 · Stages: Operation & maintenance · Benchmark report EN UA DE NL FR ES PL
Replacement Equivalence Evaluator Compares replacement items against recorded critical characteristics and blocks on mismatches or unresolved evidence. Benchmark tested · 144/144 · Stages: Operation & maintenance · Benchmark report EN UA DE NL FR ES PL
Tie-in & Outage Window Planner Schedules tie-ins, isolations, work and tests against an outage window using CPM, calendars, resource conflicts and duration ranges. Benchmark tested · 149/149 · Stages: Operation & maintenance · Benchmark report EN UA DE NL FR ES PL
Temporary Configuration & Bypass Risk Tracks temporary configurations, expiry, compensating measures and restoration evidence, with optional scenario-level risk calculation. Benchmark tested · 164/164 · Stages: Commissioning , Operation & maintenance · Benchmark report EN UA DE NL FR ES PL
Control & Software Change Compares structured control baselines, traces semantic changes to functions and requirements, and proposes retest candidates without claiming completeness. Benchmark tested · 202/202 · Stages: Detailed engineering , Commissioning , Operation & maintenance · Benchmark report EN UA DE NL FR ES PL
Post-Modification Verification & Closeout Checks requirement-to-test-to-evidence traceability, document currency and applicable PSSR items before an engineering change package is closed. Benchmark tested · 158/158 · Stages: Commissioning , Handover , Operation & maintenance · Benchmark report EN UA DE NL FR ES PL
Maintenance & Test Interval Change Compare proof-test, age-replacement and RBI inspection intervals against explicit reliability, cost or degradation metrics. Benchmark tested · 157/157 · Stages: Operation & maintenance · Benchmark report EN UA DE NL FR ES PL
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Categories: Nuclear Physics & Radiation · Nuclear Engineering, Safety & Fuel · Thermodynamics, Heat & Fluid Flow · Pipe & Vessel Transients · HVAC & Indoor Climate · Acoustics & Noise · Building Physics & Envelope · Electrical Engineering · Control & Systems · Occupational Safety · Project & Delivery · Engineering Change & Plant Life · Structures & Mechanics · Physics & Mathematics · Materials & Chemistry
Lifecycle stages: Concept · Basic engineering · Detailed engineering · Procurement · Manufacture & FAT · Construction & installation · Commissioning · Handover · Operation & maintenance