Wind Turbine Gearbox FMEA (Graphviz)

digraph gearbox_fmea {
  rankdir=LR;
  graph [fontname="Inter", labelloc="t", label="FMEA - wind turbine gearbox (risk priority number on each link)"];
  node [fontname="Inter", shape=box, style="rounded,filled", fillcolor="#f1f5f9"];
  edge [fontname="Inter", fontsize=10];

  cause1 [label="Water ingress via\nthe breather", fillcolor="#fee2e2"];
  cause2 [label="Lubricant starvation at\nlow rotor speed", fillcolor="#fee2e2"];
  cause3 [label="Misalignment after a\nmain bearing change", fillcolor="#fee2e2"];

  mode1 [label="Micropitting on the\nintermediate stage"];
  mode2 [label="White etching cracks in\nthe planet bearing"];
  mode3 [label="Tooth flank scuffing"];

  effect1 [label="Vibration alarm,\nderate to 60 percent"];
  effect2 [label="Unplanned gearbox exchange\n380k and 9 days lost", fillcolor="#fecaca"];
  effect3 [label="Fleet-wide inspection\ncampaign"];

  detect1 [label="Online oil particle counter\n(detection 3)", shape=note, fillcolor="#dcfce7"];
  detect2 [label="Vibration spectrum trend\n(detection 4)", shape=note, fillcolor="#dcfce7"];
  detect3 [label="Borescope every 6 months\n(detection 6)", shape=note, fillcolor="#dcfce7"];

  cause1 -> mode2 [label="RPN 336"];
  cause2 -> mode1 [label="RPN 210"];
  cause2 -> mode3 [label="RPN 180"];
  cause3 -> mode3 [label="RPN 252"];
  mode1 -> effect1;
  mode2 -> effect2;
  mode3 -> effect1;
  effect2 -> effect3;
  detect1 -> mode2 [style=dashed, dir=back];
  detect2 -> mode1 [style=dashed, dir=back];
  detect3 -> mode3 [style=dashed, dir=back];
}