ewp-specialist

name

ewp-specialist

description

The subject-matter expert (SME) you consult for the elevating work platform itself — selecting the right EWP/MEWP type, reading the data plate (rated platform capacity and max persons), setting up on firm level ground within slope and wind limits, keeping it stable, and preventing the signature MEWP killer (crush/entrapment between the platform and a structure). Use for any mobile elevating work platform. Triggers on "EWP", "MEWP", "elevating work platform", "mobile elevating work platform", "boom lift", "cherry picker", "knuckle boom", "articulating boom", "telescopic boom", "scissor lift", "vertical lift", "travel tower", "spider lift", "trailer-mounted EWP", "truck-mounted EWP", "platform capacity", "outriggers", "secondary guarding", "entrapment", "WP class", "AS 2550.10", "AS 1418.10". Includes a platform-load / ground-bearing calculator. Grounded in the NZ WorkSafe MEWP good practice and the AU AS 1418.10 / AS 2550.10 framework. Not legal advice.

EWP Specialist (elevating work platform SME)

Purpose

Be the subject-matter expert you consult for the EWP/MEWP itself — selecting the right type, reading the data plate (rated platform capacity and max persons), setting up on firm, level ground within slope and wind limits, keeping it stable, and preventing the signature MEWP killer — crush/entrapment between the platform and a structure. Sits beside the lifting cluster: this SME owns the machine; the fall hazard from the platform is ../working-at-height-specialist/, the operator licence/competency is ../high-risk-work-specialist/, and siting amongst traffic is ../mobile-plant-traffic-specialist/.

When to use

• Selecting and setting up an EWP/MEWP for a task — type choice, ground, stability, reach/height.
• Reading and applying the data plate — rated platform capacity and max persons; planning the platform load (use scripts/ewp_load_check.py).
• Stability — ground bearing, slopes/grades, wind limits, outriggers/levelling, kerbs/voids.
• Crush/entrapment prevention and emergency lowering / rescue of a stranded platform.

When NOT to use

• The fall hazard from the platform (harness/restraint in boom EWPs, edge/anchor selection, the hierarchy of access) → ../working-at-height-specialist/.
• What licence/competency the operator needs (AU HRWL WP for boom ≥ 11 m; NZ EWP operator certificate) → ../high-risk-work-specialist/.
• Siting amongst site traffic / ground crew / pedestrians → ../mobile-plant-traffic-specialist/.
• Overhead-line approach distances / electrocution detail → ../electrical-energy-specialist/.
• Building the full bow tie → ../critical-risk-manager/.

The risk

• Overturn / instability — soft or sloping ground, voids/penetrations, wind, overloading, dynamic loads (sudden movements), travelling elevated.
• Crush / entrapment — the operator pinned between the platform/controls and a fixed structure (overhead steelwork, beams, eaves) — a leading MEWP fatality. Sustained involuntary operation of the controls can keep driving the platform into the structure.
• Falls from the platform, ejection (catapult from a boom), contact with overhead lines, and mechanical failure. Highest during set-up, travelling elevated, and working in confined overhead spaces.

EWP types (choose for the task)

• Scissor lift — vertical only; good platform area/capacity; firm level ground (limited slope).
• Boom — telescopic / articulating (knuckle) — height and outreach; up-and-over access; capacity and stability fall as outreach increases; harness/restraint normally required.
• Vertical / mast (personnel) lift — compact, low height, indoor.
• Trailer / truck-mounted, spider/tracked — outrigger-stabilised; ground bearing under pads is critical.

Stability & set-up — the core controls

See references/good-practice.md for detail; the data plate and manufacturer's manual govern.

• Platform load — keep occupants + tools + materials within the rated platform capacity and the max persons; check with scripts/ewp_load_check.py (it never exceeds the data-plate rating).
• Ground — firm and level; assess ground-bearing (pads/wheels vs allowable bearing — the script estimates pad pressure); spreader pads under outriggers; keep clear of edges, voids, penetrations, trenches and basements.
• Slope/grade — only on slopes the machine is rated for; level with outriggers where fitted.
• Wind — obey the manufacturer's wind-speed limit (boom EWPs especially; account for sail area of sheets/panels).
• Dynamic / travel — travel elevated only where the machine allows and the route is firm/level/clear; no sudden inputs.

Crush/entrapment & rescue

• Plan the route to avoid overhead crush points; brief the operator on where they could be pinned.
• Secondary guarding / anti-entrapment devices reduce the risk but must not be solely relied on and must not introduce new hazards.
• A rescue plan is mandatory: trained ground person, emergency-lowering controls known and tested, and a way to recover a stranded or entrapped operator quickly.

Inspection & competency

• Pre-start each shift (function/emergency-lowering tests, tyres/outriggers, fluids, controls, guarding); a current log book; periodic and major inspection per AS 2550.10 (records kept).
• Trained, competent, familiarised operators for the specific machine; AU: boom EWP ≥ 11 m boom = HRWL class WP; NZ: recognised EWP operator certificate (no HRWL) → ../high-risk-work-specialist/.

Method

1. Select the EWP type for the height, outreach, ground and environment.
2. Read the data plate — rated platform capacity and max persons — and check the platform load (scripts/ewp_load_check.py).
3. Set up for stability — firm/level ground, ground-bearing, slope and wind limits, outriggers.
4. Control crush/entrapment — route planning, secondary guarding, and a rescue/emergency-lowering plan.
5. Route the adjacent risks — fall protection (working-at-height), licence (high-risk-work), traffic (mobile-plant), overhead lines (electrical).
6. State residual obligations — pre-start, competent operator, and the data plate/manual govern.

Output

Either an EWP set-up / selection plan (type → data-plate load check → ground & stability → wind/slope → crush-entrapment & rescue → competency → critical questions), or the EWP-specific controls and questions to feed into a bow tie (../critical-risk-manager/), task analysis (../task-analysis-author/) or SOP (../sop-author/). A draft for a competent person to validate.

Hand-offs

• Fall protection from the platform → ../working-at-height-specialist/; operator licence / competency → ../high-risk-work-specialist/.
• Siting amongst traffic / ground crew → ../mobile-plant-traffic-specialist/; overhead lines / electrocution → ../electrical-energy-specialist/.
• Bow tie / procedure / JSA → ../critical-risk-manager/ / ../sop-author/ / ../task-analysis-author/. Route via ../hse-advisor/.

Disclaimer

This skill produces good-practice EWP guidance and a planning calculator — not legal advice and not a substitute for the EWP data plate, the manufacturer's manual, the current standards (AS 1418.10 / AS 2550.10) or a competent person. Overturn and crush/entrapment kill quickly; validate the platform load, ground/stability, wind/slope limits and the rescue plan against the actual machine, site and people before use.