I-MR Chart — Reactor Peak Exotherm
Twenty-six batches of peak exotherm temperature as an I-MR pair, with rules 5 and 6 flagging the upward shift after the coolant changeover and Cpk 1.16 against the 78–84 °C batch record limits.
Make it your own.
title "Peak exotherm — reactor R-201"
chart i-mr
unit "degC"
spec lsl: 78 usl: 84 target: 81
# One batch, one reading — a rational subgroup does not exist here,
# so individuals and the moving range of two are the only honest chart.
value 80.2
value 81.0
value 80.7
value 80.5
value 81.6
value 81.4
value 81.5
value 81.5
value 79.8
value 80.4
value 80.8
value 80.1
value 82.9
value 80.0
value 80.4
value 80.2
value 80.1
value 81.7
value 80.7
# Chilled-water loop swapped to the reconditioned exchanger.
value 81.4
value 82.8
value 81.5
value 82.9
value 83.1
value 81.6
value 82.6