Table of Contents
Advertisement
Chapter 3 — Spares planning
Introduction
Definitions and assumptions
Spares planning is used to determine desired inventory levels of spares
(replaceable) items. Spares planning is used by repair houses and centralized
depots in order to ensure that there is an adequate stock of replaceable items
on hand.
This section will provide the information necessary to calculate spares for the
Meridian 1 Option 11C Compact system.
Failure rate: Spares planning is based on the Failure rate of the replaceable
part. The failure rate is defined as the estimated number of failures for that
item during one million (10
Sparing interval: the sparing interval is the period of time that the stock of
items should last without being replenished. This period is assumed to be one
year after the installation of the system.
Stock confidence level: the stock confidence level is the allowed probability
of not going out of stock during the sparing interval. This is assumed to be
greater than 99.9 percent.
Turnaround time for repair: the turnaround time for repair is the length of
time it takes to repair a failed spares item.
Meridian 1 Option 11C Compact
6)
hours of operation.
Page 31 of 136
Technical Reference Guide
Advertisement
Table of Contents
