Continual improvement of an EnMS based on ISO 50001
Domain 6 tests the difference between fixing a nonconformity and improving energy performance, and the evidence a certification auditor expects (clause 10).
Nonconformity and corrective action (10.1)
React to the nonconformity, evaluate the need to eliminate the cause, correct it, review and analyse it, determine causes, implement action, review effectiveness, update risks and opportunities, and change the EnMS if necessary. Retain documented information on the nature of the nonconformity, actions taken and results.
Continual improvement (10.2)
The organization continually improves the suitability, adequacy and effectiveness of the EnMS and the improvement of energy performance. No rate or percentage is prescribed, but demonstrable improvement against the baseline is expected.
Where improvement comes from
Prioritized opportunities from the energy review; monitoring deviations; internal audit findings; management review decisions; corrective actions; design and procurement choices; new technology and operating practice.
Worked example
An internal audit finds two SEU action plans lapsed after a shift-pattern change. Root cause: ownership was never reassigned after a reorganization. Corrective action assigns owners, adds a standing item to the monthly energy meeting and verifies effectiveness over the next two months. That repairs the system; the energy performance improvement is shown separately by the EnPI moving from 0.31 to 0.28 the following quarter.
Traps
Presenting a capital project as improvement evidence when its effect was never measured; closing a corrective action at 'training delivered' without an effectiveness review; claiming improvement because a certificate exists; confusing a correction (re-tightening a steam trap) with a corrective action (changing the trap maintenance schedule).