Safe Use of Gondolas for Facade Inspection: Lessons from MOM Accident Reports
Gondola safety in Singapore for facade inspection — MOM accident lessons, anchorage design, Authorised Examiner testing, weekly re-inspection and fall protection.
Gondolas are the workhorse of facade inspection in Singapore — there are around 4,000 active gondolas registered with the Ministry of Manpower at any time, and most close-range facade inspections on tall buildings end up using one. The same MOM data that quantifies the population also quantifies the risk: in the three years before MOM's 2009 factsheet on gondola accidents, three workers were killed while working on gondolas, including a fatal incident on 12 November 2009 in which a worker on the ground floor was struck by a piece of plaster chipped off during installation work happening on the rooftop above.
For a building owner, MA or facade inspector, gondola safety is not a generic OSH topic — it is a tightly regulated regime with three pillars: proper design and installation, regular inspection and maintenance, and adequate fall protection.
Why gondolas need disproportionate attention
Gondolas move vertically via winches attached to wire ropes secured to the rooftop using an anchorage system. To cover a full elevation, the anchorage point has to be relocated as the work progresses across the facade. That means the integrity of the gondola and its anchorage is being remade every time it moves — and each remake is a fresh opportunity for something to fail.
The accident pattern MOM has documented makes this point grimly. In a 2006 case, two workers were repositioning a gondola resting on an external cantilevered platform on the ninth storey when it tilted outwards while the deceased was tensioning the cables; he fell 39 m to the ground. The occupier was fined S$130,000 under the WSHA. In a 2007 case, a worker climbing off a gondola onto an inclined HDB canopy fell to his death; the employer was fined S$70,000, the director S$20,000, and the occupier a further S$18,000 under WSHA and the Factories (Scaffolds) Regulations.
Each of these accidents is a textbook violation of one of the three pillars below.
Pillar 1 — Proper design, installation and testing
Every gondola and its anchorage system must be designed by a Professional Engineer, in accordance with established codes of practice and standards. The design must specifically address:
- Wall clamp anchorages. Where wall clamps are used, they must be installed on a structure capable of withstanding the imposed stresses. Where the metal clamp contacts a plaster wall, adequate packing must be used. Sufficient clearance should be maintained between wall clamps and other parts of the supporting structure outside designated padded areas.
- Wire rope path. Wire ropes must remain vertical at all times and must not contact any part of the building such as a roof canopy.
- Entry/exit point. A proper entry and exit point must be provided so workers can climb in and out from a secured and safe landing.
A pre-installation site inspection is mandatory to identify problems that would hinder safe operation — for example, a planned anchorage point above an inclined canopy, or a wire-rope path that grazes a parapet.
After design, the gondola can only be erected by an Approved Scaffold Contractor (ASC), which is responsible for installation strictly to design and for ensuring the gondola is installed by competent riggers under the supervision of a qualified Suspended Scaffold Supervisor. Safe working load and the maximum number of workers must be clearly specified to prevent overloading.
After first installation on site, the gondola must be tested by an Authorised Examiner — a Professional Engineer specially approved by MOM — before it is used. That load test is to be repeated at least once every 6 months thereafter.
Pillar 2 — Regular inspection and maintenance
Because gondolas move and their anchorage is repeatedly remade, MOM requires a layered inspection cadence:
- Re-inspection by the qualified supervisor every 7 days, or whenever the gondola is relocated, or after environmental events (heavy storms) that could have affected stability or strength.
- Winch inspection — winches must be checked to ensure the gondola remains horizontal during ascent and descent. Winches should be opened up for thorough inspection by a competent person at least once every 12 months.
- Wire rope inspection — wire ropes must be checked to ensure they are not frayed or damaged.
These three checks are the minimum, on top of the 6-monthly Authorised Examiner load test from Pillar 1.
Pillar 3 — Adequate fall protection
Workers in gondolas are continuously exposed to fall-from-height risk. Fall protection layered on top of the gondola itself must include:
- A safety harness coupled to a shock absorber for every worker, secured to an independent lifeline — not to the gondola itself.
- Compliance with the WSH (Work at Heights) Regulations and the relevant training course at worker, assessor and manager levels.
MOM's prohibitions are blunt:
- Do not overload the gondola with equipment or materials.
- Do not over-stretch by standing on the guardrail.
- Do not climb out of the gondola except at the designated landing point or level.
The 2007 HDB fatal accident violated the third prohibition. The 2009 fatal accident violated Pillar 1 — a falling object from the rooftop installation hit a worker tensioning cables in the gondola at ground level.
Common red flags during a gondola operation
- Anchorage design not signed off by a Professional Engineer
- Authorised Examiner certificate older than 6 months
- Weekly supervisor inspection not documented
- Wire rope contacting a canopy, parapet or sunshade along its path
- Workers on rooftop installation work happening above active ground-level operations without an exclusion zone below
- Workers climbing out of the gondola onto a canopy or non-designated ledge
- Lifeline anchored to the gondola itself rather than an independent point
- Equipment or materials in the gondola exceeding the stated SWL
Singapore regulatory context
The legal framework for gondola operations is the Workplace Safety and Health Act, with the WSH (Scaffolds) Regulations, WSH (Work at Heights) Regulations and WSH (General Provisions) Regulations the most directly relevant. The applicable Approved Code of Practice is CP 20:1999 — Code of Practice for Suspended Scaffolds. Gondola design and operation is monitored by MOM's Occupational Safety and Health Inspectorate. For facade inspection specifically, the BCA periodic facade inspection regime under the Building Control Act sets the inspection requirement, but the gondola access falls entirely under WSHA — section 16 and section 17 cover MEWPs and gondolas, including occupier-owned machinery scenarios.
Owner-side five-line checklist
If your building is mobilising for a periodic facade inspection that uses gondolas, this short checklist eliminates most of the avoidable risk:
- PE-stamped anchorage design on file
- Authorised Examiner certificate current (within 6 months)
- Approved Scaffold Contractor (ASC) appointed
- Suspended-scaffold supervisor has signed the latest weekly inspection
- Workers hold valid WAH (Work at Heights) training certificates
If any of those five lines is unchecked when work starts, the inspection isn't ready to mobilise.
How Ezzogenics supports gondola operations
Ezzogenics' work-at-height team is set up around gondola, MEWP, suspended scaffold and rope-access operations under WSHA discipline. We support facade inspections and rectification works as the access contractor for CP-led teams and run our own inspection-driven repair scopes — plaster, tile, sealant, cladding and fixings. Browse the project portfolio for examples or contact us to scope an access plan.
Sources & references
- MOM — Workplace Safety and Health Act 2006 and subsidiary regulations: WSH (Scaffolds), WSH (Work at Heights), WSH (General Provisions). www.mom.gov.sg
- MOM — Approved Code of Practice CP 20:1999 for suspended scaffolds.
- MOM — Factsheet: Recent Accidents Involving Use of Gondolas (Ref 20091120-37, 20 Nov 2009).
- BCA — Periodic Facade Inspection (PFI) and Building Control (Periodic Inspection of Buildings and Building Facades) Regulations 2021. www1.bca.gov.sg
- SCDF — Code of Practice for Fire Precautions in Buildings, 2023 Edition. www.scdf.gov.sg
Download the PDF version: Blog_6_gondola-safety-singapore.pdf