---
title: "Reliability-centred maintenance (RCM)"
description: "Reliability-centred maintenance (RCM) is a structured framework for deciding what maintenance is needed and when, by analysing the failure modes, consequences and detection methods for each asset. RCM became the dominant industrial-maintenance methodology in aviation, nuclear and process industries during the 1990s–2000s."
canonical_url: "https://sylio.co/glossary/reliability-centred-maintenance"
last_updated: "2026-06-28T02:29:28.698Z"
---

**Reliability-centred maintenance (RCM)** is a structured framework for deciding what maintenance is needed and when, by analysing the failure modes, consequences and detection methods for each asset. RCM became the dominant industrial-maintenance methodology in aviation, nuclear and process industries during the 1990s–2000s.

## RCM and sonic-horn cleaning

RCM thinking supports the case for sonic-horn cleaning at the *outage-avoidance* level:

- **Failure mode** — [forced outage](/glossary/forced-outage) from [ESP hopper bridging](/glossary/esp-hopper), [baghouse ΔP](/glossary/differential-pressure-baghouse) rise, [cement kiln snowman](/glossary/kiln-inlet-ring-snowman), [recovery-boiler superheater pluggage](/glossary/recovery-boiler)
- **Consequence** — substantial revenue and operational impact (see [forced outage](/glossary/forced-outage) economic figures)
- **Detection** — typically late; failure is recognised only when it triggers the outage
- **Maintenance response** — [sonic horns](/glossary/sonic-horn) as continuous preventive intervention

This RCM logic is the structured argument behind the business case for installing acoustic cleaning on fouling-prone applications.

## Related terms

- [Predictive maintenance (PdM)](/glossary/predictive-maintenance)
- [MTBF](/glossary/mtbf)
- [Availability factor](/glossary/availability-factor)