Planned Maintenance System (PMS) and Auxiliary Machinery
Critical classification requires ship-specific reliability measures and regular testing of relevant stand-by arrangements; ISM 10.3 sets no universal intervals or inventories.
Operational Explanation
Critical classification requires ship-specific reliability measures and regular testing of relevant stand-by arrangements; ISM 10.3 sets no universal intervals or inventories.
Regulatory Reference
ISM Code 10.3: identify systems whose sudden failure may create hazardous situations and provide specific measures to promote reliability.
Scope of Application
Equipment identified by risk assessment and SMS; intervals, priorities and spares follow maker, statutory/class, experience and Company.
Procedure / How to Complete It
- Identify critical equipment and failure effects.
- Define reliability measures, maintenance and testing in the SMS.
- Derive intervals and stock from ship-specific sources.
- Review after modifications, failures and near misses.
Practical Example
A standby pump is critical: the SMS and maker set its test and spares; the critical label alone creates no interval or minimum stock.
What Typically Goes Wrong
Automatically deriving an interval or minimum inventory from critical classification alone.
Common Mistakes Mistake Library
| Mistake | Consequence | How to Avoid It |
|---|---|---|
| Automatically deriving an interval or minimum inventory from critical classification alone. | Non-compliant decision or treatment | Follow the approved arrangement and applicable sources |
What the PSCO Checks
Operational Tips
- Separate current requirement, class/maker, SMS and voluntary guidance.
- Do not improvise tests, thresholds or intervals.
- Record deviations and corrective action.
Preparation checklist
- Critical list current
- Stand-by testing defined
- Maker/class/SMS aligned
- Risk-based spare strategy
FAQ
Related Topics
Last substantive revision of this page: 31 August 2026 · page fingerprint 1706dbc6aab8