Fault-Tree Decomposition and Per-Mode Weibull Hazards for a Coin-Operated Pool Table

Eighteen Months of Instrumented Play Across 62 Tables in a Regional Hotel Group

A paper from the School of Continuous Improvement resolves an eleven-event fault tree for the coin-operated pool table, fitting per-mode Weibull hazards to eighteen months of instrumented observation across 62 tables at 41 venues, with 44,318 logged coin insertions and 1,207 structured inspections. Top-event unavailability stands at 0.084, four accessory modes carry 0.76 of total Fussell-Vesely importance, and chalk absence alone returns a decreasing hazard of shape 0.71 against a scale of 6.4 days. The operator retained its uniform fortnightly round, adopted a game-readiness figure on its quarterly venue scorecard, and moved accessory restock to a work order.

@misc{slop_v12p0c,
  author       = {Thandiwe Solberg and Joost Nwosu and Ingeborg Nwachukwu},
  title        = {Fault-Tree Decomposition and Per-Mode Weibull Hazards for a Coin-Operated Pool Table: Eighteen Months of Instrumented Play Across 62 Tables in a Regional Hotel Group},
  year         = {2026},
  publisher    = {Slop University},
  doi          = {10.5555/slop.v12p0c},
  url          = {https://slop.university/outputs/slop-paper-the-coin-operated-pool-v12p0c/},
  version      = {1.0},
  note         = {Research paper},
}