GWO Working at Heights and Manual Handling Combined Refresher (WAH & MH Combined Refresher)
- Aim: Refreshes safe use of PPE at height, climbing techniques, basic rescue procedures, and ergonomic principles for manual handling to prevent falls and musculoskeletal injuries.
- Duration: Typically 1–1.5 days (shorter than separate refreshers).
- Certificate Validity: 24 months (2 years); two separate certificates uploaded to WINDA (one for WAH, one for MH).
- Prerequisites: Valid (or recently expired) WAH and MH certificates, valid WINDA ID, minimum age 18, good physical health.
- Why Mandatory: Part of BSTR Onshore/Offshore – required for turbine access.
An efficient combined option offered by many GWO training providers.







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