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Failure analysis services Forensic accident investigation Fire investigation Expert witness in litigation Crane accident investigation and analysis Corrosion engineering Fatigue and fracture analysis Design & structural analysis Condition assessment

Failure analysis, accident & fire investigation-UTC Clients :

tower crane collapse accident @ National Art Gallery in failure analysis and accident investigation

Crane Accident Investigation
Failure Analysis and Expert Witness Services

Cranes are important and widely used equipment for lifting and transferring goods in various industries. Failures and accidents often occur on cranes worked at production line, construction sites, shipyards, ships, refinery plants, oil & gas exploration and drilling sites, not only resulting in huge economic loss but also injuries or even fatalities. It’s critical to perform failure analysis and forensic accident investigation for crane experts to determine the cause(s) & mechanism(s) of crane failure or accident, and provide counter measures to prevent similar crane failure or accident recurrence. Effective failure analysis and accident investigation can not only enhance reliability and safety, but also improve product quality and reduce operational cost & down time of facilities. Furthermore, effective failure analysis and accident investigation can assist litigation and insurance claims related to crane accidents and failures in acting as crane expert witness.

There are various types of cranes, mainly mobile cranes, bridge cranes, gantry cranes, tower cranes, dockside cranes, ship cranes, etc. The cranes consist generally of power system (electricity or engine), hosting system (built on tracks, vehicle, tower etc.), and hoisting system including wire ropes, pulleys or sheaves, hooks, winches, main structures (booms, jibs), operation system, braking system, safety devices and cabin. If there are some failures or damages in these systems during operation and standby, that could result in accidents.

Why Choose UTC experts for Crane Failure Analysis and Accident Investigation

  • UTC is one of leading independent investigation company, consists of experts with more than 35 years failure analysis and accident investigation experience and relevant qualifications.
  • UTC key staff have successfully led and completed thousands of projects in forensic accident investigation and failure analysis for aerospace, marine, petrochemical, electronic and microelectronic, construction, amusement, oil & gas, transportation industries and governmental agencies
  • UTC's failure analysis and accident investigation services had been well recongnized by industries and government agencies including Republic of Singapore Air Force, DSTA, Singapore Civil Defence Force (SCDF), Ministry of Manpower (MOM), Hyundai (Korea), PUB, SBS Transit, China Taiping Insurance, Rajah & Tann, WongPartnership, Universal Terminal,Takenaka (Japan) and MSIG Insurance, etc.
  • UTC's failure analysis and accident investigation services are cost-effective, validated by a number of awards on relevant projects from government tenders in GeBiz.
  • UTC's crane expert witness and reports on failure analysis and accident investigation were proven and accepted by High Court, State Court, Criminal Court and Arbitration Court.

  • Contact UTC crane experts, please click EMAIL or Call (+65)81380509 for more details.

    Crane failure analysis & accident investigation status in Singapore

      Government analysis and investigation

      In Singapore, government failure analysis & accident investigation works are channeled to Occupational Safety and Health Division of Ministry of Manpower (MOM) - which focus on workplace accident investigation, including those accidents happened in plants, factory and construction sites, including crane related failures and accidents.

      When personnel injuries and crimes involved or fatal accidents, Singapore Police Force may participate the investigation. In case of some high profile or complicated accidents, the goverment agencies except TSIB may engage third party investigation team(s) for accident investigation or failure anayis

      Commercial crane failure analysis and accident investigation:

    • Independant investigation companies - carry out failure analysis and accident investigation upon outsourcing or request of government agencies, accident involved companies, insurance companies, loss adjusters.
    • Third party testing companies, their main business are product and/or material testing, they may give some interpretations based on their testing results.
    • Insurance companies, they conduct investigation on accidents and failures for settling claims.
    • Loss adjusters, they mainly assess the damages and loss of accidents or failures.
    • Surveyors, they mainly survey the accident sites and write a report.


    • UTC's role in crane failure analysis and accident investigation

      UTC is one of leading independent third party investigators. UTC's experts are often engaged by government agencies and companies for failure analysis and accident investigation. Typical examples including:

      Goverment failure analysis and accident investigation projects:
    • Failure analysis investigation on Taxi fire and explosion near Buona Vista MRT, awarded by Singapore Civil Defence Force (SCDF)
    • Investigating fatal gate toppling at construction site and as expert witness testifying in Criminal Court, awarded by Occupational Safety and Health Division of Ministry of Manpower (MOM).
    • Failure analysis and accident investigation on explosion of electric storage water heater, awarded by Consumer Safety Department of SPRING Singapore/Enterprise Singapore
    • Failure analysis investigation on damage items at and/or recovered from incident sites (two year contract + one year option), awarded by Singapore Civil Defence Force (SCDF)
    • Failure analysis on fractured manhole framesets, awarded by Public Utilities Board (PUB)
    • Failure analysis and accident investigation on liquid dispenser fire, awarded by Consumer Safety Department of SPRING /Enterprise Singapore
    • Conducting "Vehicle Fire Investigation" course, awarded by Land Transport Authority (LTA).
    • Failure investigation analysis on landing gear system failure of UAV, awarded by MINDEF/DSTA/RSAF.
    • Recent commercial failure analysis and accident investigation projects:
    • Forensic investigation on crane collapse accident at National Art Gallery, UTC crane expert was engaged by Takenaka (Japan) for crane accident investigation and crane expert witness in Arbitration Court
    • Mobile crane toppling accident during lifting cargo, UTC crane expert was engaged by Kim Soon Lee Transportation & Moving Specialist for crane failure analysis/ accident investigation and crane expert witness testtifing in State Court
    • Tower crane collapse at construction site, UTC crane expert was engaged by China Taiping Insurance in High Court
    • Investigating building cladding (aluminium composite panel - ACP) fire at Toh Guan Road and as expert witness in High Court
    • Investigation on various vehicle fires for MSIG Insurance
    • Failure investigation analysis on 29" oil pipeline leakage, engaged by Universal Terminal

    UTC's expert areas in failure analysis & accident investigation

    Objectives of failure analysis & accident investigation

      Effective failure analysis and accident investigation will:

    • Determine root cause(s) of failures/accidents/incidents.
    • Find out mechanism(s) of failures, incidents and accidents.
    • Recommend counter measures and solutions to prevent recurrence of failures and accidents.
    • Support litigation/court hearing on litigation/liabilities related to failures and accidents


    • Click here to understand more about what is effective failure analysis and accident investigation.

    Effective failure analysis and accident investigation

    What is effective failure analysis and accident investigation

    After conducting failure analysis or accident investigation, the conclusion could be wrong, inconclusive or inrelevant, lack of logical or evidence, such kind of conclusion would be misleading, not only the analysis and investigation money as well as precise time are wasted, but also the failures or accidents could not be solved and prevented, it would further damage reputation and even litigation loss.

    The effective failure analysis or accident investigation must be comprehensive, logical, adapt scientificaly proven methods, and get right conclusion with solid evidence.

    How to validate effective failure analysis and/or accident investigation

    Effectiveness of failure analysis and accident investigation can be evaluated from following aspects:
  • Explain all observed phenomena and findings or data.
  • Feedback from the clients.
  • Peer review.
  • The effect after investigation and implementation.
  • Court acceptance
  • Only the evaluations from all the above aspects are positive, such failure analysis or accident investigation would be effective.

    Key elements for effective failure analysis and accident investigation


  • Qualified investigator(s)
  • Good track records
  • Proven analysis or investigation procedure and approach
  • Multi-discipline and cooperative team
  • Adequate analysis and investigation tools – instruments
  • Impartial and objective mind

  • CORE of effective failure analysis or accident investigation – Selecting analyst or investigator.

    How to select failure analyst or accident investigator

    To ensure the failure analysis or accident investigation be effective, it is crucial to select right analyst or investigator. Requirements of good analyst or investigator They shall be able to take a comprehensive approach, covering a large spectrum of disciplines, to derive the correct cause(s) of failures or accidents.
  • Comprehensive knowledge of related fields;
  • Abundant relevant experience;
  • Hands-on skills and familiar to instruments/analytical techniques;
  • knack for gathering information;
  • Ability to filter artificial/distorted information;
  • Logical thinking;
  • Absolute honesty and integrity;
  • Open minded;
  • Team work;
  • Professional sense.
  • Cost vs. quality of failure analysis and accident investigation Effectiveness of failure analysis and/or accident investigation can be evaluated from following aspects:
  • According to a study by IBM, > 72% consumers are more concerned with quality of medicine and food they buy rather than price.
  • Why? Medicine Quality i.e. its effectiveness is more crucial / important for curing diseases.
  • Similarly, only effctive failure analysis or accident investigation would be beneficial to people and society.
  • Ineffective analysis or investigation would result in non-conclusive or wrong conclusions, they not only do not have any value or but also waste precise time and cause misleading.
  • Only the evaluations from all the above aspects are positive, such failure analysis or accident investigation would be effective.
    Lower price is not equal to saving
  • Ineffective analysis or investigation - no value or even negative value, no matter how cheap.
  • Price comparison must be based on the same experience and track records of investigators.

  • Cost effective analysis or investigation
  • First of all, the analysis or investigation must be effective - quality report with right conclusion supported by solid evidence and scientific theory.
  • Secondly, the price shall be competitive.
  • They must be open market proven, demonstrated in GeBiz government tenders
  • Traceable track record

  • Traceable track records of analyst or investigator

    Basic qualifications

  • Education
  • Accreditation
  • Experience

  • Outstanding performance

  • Publications in international journals and conferences
  • Acceptance showing in Court statements
  • News paper reporting
  • Positive peer review on analysis or investigation report/conclusions
  • Recognition feedback from clients

  • UTC's experts as analysts or investigators

    - Qualifications and accreditation

  • PhD in relevant disciplines/areas
  • Fellow of Institution of Engineers, Singapore (IES)
  • Chartered Engineer in relevant areas (UK)
  • Member, National Association of Fire Investigators (USA)
  • Certified Pressure vessel inspector API 510 (American Petroleum Institute)
  • Expert/Technical Assessor of Singapore Accreditation Council (SAC)
  • Executive committee member of The Institute of Materials (East Asia)
  • Accomplished thousands of relevant projects, please refer to "Typical UTC failure analysis and accident projects" Section of this web page.

  • - Outstanding performance

  • A number of technical articles published in international journals and conferences, e.g. Forensic investigation on crane accidents, published in International Journal on Forensic Engineering, Vol.3 No 4, 2017
  • Reports and conclusions of UTC's expert (Dr YU), were accepted by Court(s), e.g The judge’s statement: “The analysis report was not challenged. It was clearly at the odds ...”, in Singaporelaw.sg(MovingU Pte Ltd vs. Trans-cab Service Pte Ltd) (Clause 27).
  • UTC's expert (Dr YU) was Recognised by governments, e.g. Dr Yu's contributions in investigating major MRT disruptions, Committee Of Inquiry (COI) Report – Ministry of Transportation 2012
  • Dr Yu of UTC expert correctly determined the root cause of massive MRT breakdowns, reported by Straits Times, Top of News, 30 July 2015 (A4)
  • Recognition feedback from clients, e.g. DSTA procurement manager' email:“SAF has cooperated with UTC several times previously and UTC has proven to be capable of fulfilling our requirements. We are very satisfied with UTC's performance.”

  • - Proven cost effective failure analysis and accident investigation


    UTC's analyses and investigations are competitive, which are demonestrated markets, e.g. in Gebiz tenders, UTC was awarded many projects such as:
  • MOM, Investigation on fatal gate toppling at construction site.
  • SCDF, Period contract of accident investigation (2015-2018).
  • SCDF, Period contract of accident investigation (2019-2020)
  • LTA, Conduct training course “Vehicle Fire Investigation” (3 runs)
  • SPRING, Investigation on explosion of storage water heater
  • Enterprise SG, Investigation on liquid dispenser fire
  • RSAF, Investigation on unmanned aerial vehicle structure fracture
  • RSAF, Investigation on aircraft brake bolt failure
  • SCDF, Investigation on taxi fire and explosion near Buona Vista MRT
  • SCDF, Forensic investigation on taxi fire @ Maymount Road
  • PUB – 1 year contract for failure analysis and damage investigation


  • Macroscopic examination on damaged crane wire rope for crane failure analysis or accident investigation
    Mobile crane toppling accident in failure analysis and accident investigation

    Typical Crane Accident Investigation and Failure Analysis Projects by UTC's Experts

  • Investigation on tower crane toppling accident during lifting operation
  • Failure analysis and accident investigation on mobile collapse
  • Accident investigation and failure analysis on tower crane boom fracture
  • Failure analysis on crane load drop injury accident
  • Accident investigation on crane fire in lifting operation
  • Investigation on fatal accident of tower crane collapse
  • Failure analysis on crane wire rope snapping
  • Accident investigation on lifting accident using multiple winches
  • failure analysis and accident investigation on lift wire rope breakage

  • Expert Witness in crane accident litigation by UTC's experts

  • Fatal tower crane collapse accident at National Art Gallery in Arbitration Court

  • The crane accident caused two men die and four personnel injury. The value of this litigation was up to 10 millions SGD. UTC was engaged as crane expert witness by Takenaka. The case was settled down in favour of our client shortly after UTC's report was issued.

  • Mobile crane collapsed accident in High Court

  • One crane collapsed in a construction site during lifting operation, which severely damaged the nearby plant facilities and workshop. China Taiping Insurance engaged UTC to independantly investigate the accident and as crane expert witness in legal suit. We successfully determined the root causes of the accident. Shortly after receiving our report, the case was settled favourably to our client before court hearing.

  • Mobile crane toppling accident during lifting cargo in State Court

  • A mobile crane toppled when it hoisted and transferred a loaded 40-foot container over a 2 storey building onto a trailer, resulting in cargo and crane damages. UTC was engaged as crane expert witness to investigate the accident and testify in State Court. The judge accepted UTC's expert opinions and evidence, as shown in judgement statement, "Dr YU provide a sound scientific explanation to support their positions." and "Dr YU's credentials show that he is an expert who has been consulted by Ministry of Manpower to produce analysis of crane accident and he has professional publications in forensic engineering on topic of crane failure."

    Examples of UTC Recently Awarded Failure Analysis and Accident Investigation Projects:

  • Investigation on various vehicle fires for MSIG Insurance.
  • Failure analysis and accident investigation on liquid dispenser fire for Consumer Safety Department of SPRING /Enterprise Singapore.
  • Failure analysis and investigation on building cladding (aluminium composite panel - ACP) fire at Toh Guan Road.
  • Failure analysis and accident investigation on explosion of electric storage water heater by Consumer Safety Department of SPRING Singapore/Enterprise Singapore.
  • Failure analysis investigation on damage items at and/or recovered from incident sites (two year contract + one year option) by Singapore Civil Defence Force (SCDF).
  • Failure analysis on fractured manhole framesets from Public Utilities Board (PUB).

  • Click HERE to download the brochure of failure analysis and accident investigation services.

    Typical UTC failure analysis & accident investigation projects

      Our experts had successfully accomplished thousands of failure analysis and accident investigation projects, some typical cases are listed as follows:

    • Failure analysis on damages of mechanical system of amusement rides (track, roller coaster vehicle)
    • Forensic investigation on mass rapid transport system (MRT) / subway accident (trains, power supply, track)
    • Forensic investigation on taxi/car/vehicle fire and explosion
    • Investigation on accidents of cranes (wire rope breakage, boom frame fracture, brake system failure, bearing damage, crane topple)
    • Forensic investigation on building cladding (aluminium composite panel -ACP) fire and expert witness in high court
    • Failure analysis on aerospace engine damages (turbine blades, fan blades, vanes, etc.)
    • Investigation on paint and coating failures
    • Forensic investigation on automotive steering system and shaft failure(transportation)
    • Failure analysis on lift wire rope fracture/breakage/snapped of building
    • Failure analysis on aerospace landing gear system failure
    • Failure investigation on hovercraft accident (gearbox, propeller) in shipyard
    • Failure analysis on damages in gas and steam turbines
    • Failure investigation on notebook computer burning
    • Failure analysis on gearbox explosion
    • Forensic investigation on failures in jack-up rigs (pipe corrosion, glass cracking)
    • Failure analysis on fractures of wire ropes in multi-wenches lifting system
    • Failure investigation on extra-hydrogen release in huge battery of Submarine
    • Investigation on failures of PCB, PCBA, LCD, passive components and IC
    • Forensic investigation on heat exchanger burst
    • Failure analysis on submarine power cable damage
    • Failure investigation on winch wire rope snapping in construction site
    • Forensic investigation on transformer fire in plant
    • Failure analysis on engine components (piston, crankshaft, camshaft, bearings, connecting rod, bolts, engine block, etc.)
    • Forensic investigation on explosion of power distribution system in plant
    • Failure investigation on large ship-lifting system welding joint cracking in shipyard (marine)
    • Forensic investigation on incidents in Singapore Flyer
    • Failure analysis of pipeline and piping system according to FITNET FFS
    • Investigation on failures in building & structures etc.

    Relevant publications on failure analysis and accident investigation



    Cross sectional examination on damaged crane wire rope for crane  failure analysis or accident investigation

    Contact UTC crane experts, please click EMAIL or Call (+65)81380509 for more details.