Why pre-screen wind turbine technicians before the climb test and site day
Pre-screening wind turbine technicians saves the panel a wasted climb test and travel day. Applicants arrive from the military, marine and rope access trades, diesel and HVAC service, and OEM training academies, so a resume rarely says which platforms they have touched or whether their GWO Working at Height and First Aid modules are still in date. Ten minutes surfaces certification dates, hub-height comfort, lockout habits, and whether rotation away from home is genuinely realistic for them.
What actually matters when screening Wind Turbine Technician candidates
- 01
Hands-on competence
Check turbine platforms worked on, mechanical and electrical scope, and current GWO or equivalent certification.
- 02
Safety discipline
Test working-at-height and lockout discipline, and their judgement on weather and wind-speed limits.
- 03
Fault finding
Assess how they diagnose a fault 90 metres up with limited spares and a closing weather window.
- 04
Reliability and conduct
Judge reliability for remote sites, rotation schedules, and the quality of their service reporting.
Pre-screening questions to ask Wind Turbine Technician candidates
12 questions grouped by what they test. Ask the same set in every screen and score answers on a consistent scale, or send them as an async video screen and compare answers side by side.
Hands-on competence
Walk me through your hands-on experience maintaining, diagnosing, and repairing wind turbines. Name the platforms and the components you worked on.
Named turbine models and hub heights, plus specific work: gearbox oil changes, pitch system service, yaw brake pads, generator alignment, torque and tension checks.
Generic talk of "servicing turbines" with no platform, component, or torque detail after several prompts.
Do you hold industry-recognised certifications such as BZEE, GWO, or ISP? Tell me which modules and when each was issued.
Specific modules with issue or expiry dates, awareness that GWO refreshers fall due every 24 months, and willingness to send the cards.
Claims certification but cannot name the modules or say who trained them and when.
How familiar are you with turbine blade repair techniques?
Concrete work on leading edge erosion, laminate or core repairs, resin and vacuum bagging, cure times, and whether it was rope access or platform based.
Claims blade repair experience but cannot describe a resin system, a defect type, or the access method used.
Describe your experience with hydraulic systems on turbines or comparable equipment.
Pitch and yaw hydraulics, accumulator pre-charge, hose and seal replacement, pressure testing, and safe depressurisation before breaking a line.
Treats hydraulics as topping up oil, with no mention of stored pressure or depressurising before work.
Safety discipline
How much experience do you have working at height, and how do you feel about it at hub height?
Hours or years at height, fall arrest and ladder climb assist systems used, rescue drill practice, and honest, matter-of-fact comfort at 80 to 100 metres.
Bravado about height with no rescue training, or hedging that suggests they have never climbed a tower.
Brief me on the safety standards and procedures you follow in turbine operations, including lockout and weather limits.
Lockout tagout on a specific breaker or rotor lock, permit to work, toolbox talks, and a named wind speed or icing limit they have stopped work over.
Cannot describe a personal lockout step or has ever climbed above the stated wind speed limit to finish a job.
Fault finding
Give me one instance where you troubleshot a mechanical or electrical fault on a turbine. What did the alarm say and how did you isolate it?
A named alarm or fault code, the sequence of checks with a multimeter or SCADA data, the part replaced, and what they did when the spare was not in the van.
Jumps straight to "replaced the component" with no diagnostic sequence or reference to the fault code.
How proficient are you at reading schematic diagrams and technical work instructions? Give an example of a drawing you used to solve a problem.
Describes tracing a circuit on a wiring diagram, using terminal numbers, or following an OEM service bulletin step by step to a resolution.
Says they prefer to figure it out by feel or relies on a colleague to read the drawings.
Site logistics and rotation
How comfortable are you working independently at remote sites, sometimes as a two-person crew?
Prior lone or small-crew field work, radio and check-in discipline, and a habit of writing clear service reports before leaving site.
Needs constant supervision, or describes remote work only in terms of the scenery rather than the discipline.
Can you work irregular hours when wind conditions or emergency repairs demand it, including night call-outs?
Clear yes with prior on-call or rotation experience, and a realistic account of travel time and home commitments.
Hard limits on evenings and weekends, or vagueness that hides a conflicting second job.
How would you describe your physical fitness and stamina for climbing and working in adverse weather?
Specifics: recent tower climbs, carrying tool bags up ladders, working in cold or wet conditions, and no unmanaged weight or medical restriction for rescue.
Has never climbed a full tower or downplays the physical demand of a ladder ascent in full PPE.
Do you hold a valid driver's licence and a clean driving record for the service vehicle?
Valid licence, willingness to disclose any endorsements, and experience driving a loaded service van or towing on rural access tracks.
Recent suspension, undisclosed points, or no licence for a role built around van-based site coverage.
How to score responses
Score every candidate on the same four criteria immediately after the screen. At this stage you are shortlisting for panel interviews, not making the final call.
| Criterion | What a 5 looks like | Scale |
|---|---|---|
| Hands-on competence | Current GWO or equivalent tickets, with hands-on scope across the turbine platforms you operate. | 1 · 2 · 3 · 4 · 5 |
| Safety discipline | Rigorous on height, rescue, and lockout procedure, and firm on wind and weather limits under schedule pressure. | 1 · 2 · 3 · 4 · 5 |
| Fault finding | Diagnoses efficiently up-tower with limited spares, and knows when to descend rather than improvise. | 1 · 2 · 3 · 4 · 5 |
| Reliability and conduct | Reliable across rotations and remote postings, with service reports the next crew can actually use. | 1 · 2 · 3 · 4 · 5 |
Recorded audio answers let you hear whether a technician talks through a nacelle fault in real component language and how calmly they describe a height or rescue situation, both of which a written form flattens completely.
Try it on HirevireScreening FAQ
Process basics
What certifications should I check before interviewing a wind turbine technician?
Check GWO Basic Safety Training (Working at Height, Manual Handling, Fire Awareness, First Aid, and Sea Survival for offshore), plus GWO Basic Technical Training or BZEE and ISP blade qualifications where relevant. Ask for issue dates, since GWO modules require refresher every 24 months. A valid driver's licence and clean record matter for service vans and remote call-outs.
How long should a pre-screen for a turbine technician take?
Ten minutes of recorded answers is enough before you commit to a climb test. Cover platforms and drivetrain scope, certification currency, one fault they diagnosed in the nacelle, weather and lockout judgement, and rotation availability. Leave physical assessment, rescue drill, and confined space checks to the site day where they can be observed properly.
Evaluating answers
How do I tell a real turbine technician from someone repeating training-course language?
Real technicians name the platform and component: yaw motor brushes, pitch accumulator pressure, slip ring wear, gearbox oil sample results, torque values on a specific bolt pattern. Course repeaters stay at the level of "routine maintenance" and "following procedures" without naming a turbine model, an alarm code, or a torque figure they applied themselves.
What answer about wind speed and weather limits should concern me?
Any answer that treats the limit as flexible should concern you. Strong candidates cite a figure they stopped at, usually around 20 metres per second for external nacelle work or the site-specific limit in the work instruction, and describe descending with the job unfinished. Pride in climbing through lightning risk or icing signals a technician who will get hurt.
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Sanat has personally screened 300+ candidates across 18+ years of building and hiring teams, and turned that screening process into Hirevire's video screening platform. LinkedIn
