Components by service-life class

Components by service-life classpermanent: 5. semi-permanent: 4. wear-item: 1.permanent5semi-permanent4wear-item1
How many components fall into each class. Shows where ownership cost concentrates over time.

Source: Mitigation System Component and Service-Life Dataset Radon Connect. CC BY 4.0 — reuse with attribution to Radon Connect and a link to the dataset page.