pumps {SMPracticals}

Pump Failure Data

Description

The data give numbers of failures of ten pumps from several systems in the nuclear plant Farley 1. Pumps 1, 3, 4, and 6 operate continuously, while the rest operate only intermittantly or on standby.

Usage

data(pumps)

Format

A data frame with 10 observations on the following 2 variables.

x

Operating time (in thousands of operatin hours)

y

Number of failures

Source

Gaver, D. P. and O'Muircheartaigh, I. G. (1987) Robust empirical Bayes analysis of event rates. Technometrics, 29, 1–15.

References

Davison, A. C. (2003) Statistical Models. Cambridge University Press. Page 600.