Hyundai engineering and construction had engaged UTC for
forensic investigation of tower crane collapse.
UTC completed investigation on breakage of heavy duty manhole frameset.
UTC conducted failure analysis on medium duty manhole frameset.
In the evening of July 7, 2015, the entire North-South and
East-West lines crippled, which affected an estimated 250,000 commuters, was caused by a series of power trips along both lines.
Three weeks later (29, July), LTA and SMRT released their findings that salty deposits triggered the incidents, with the help of experts from Parsons Brinckerhoff and Meidensh. They coincided with the views of our Chief Consultant Dr George, YU Yonghe.
Just days after the incidents, Dr YU told The Straits Times that deposits on 3rd rail insulator were the root cause of the incidents. After near 30 years of usage, the 3rd rail insulator surfaces are covered with a layer of deposits
that consist of mainly graphite dusts and foreign substances/ contaminants, which may build an easy path for electricity to cross over the insulator surface, resulting in current leakage from the 3rd rail to its supporting metal brackets,
especially when moisture and water are involved. When the leakage current in the 3rd rail insulator exceeds certain level, it will activate the protection device and trigger the power trip, resulting in MRT disruption.
Dr YU's views were published at TOP OF THE NEWS of
Straits Times(A4) on 30 July, 2015.
PUB (Public Utilities Board) awarded UTC one year contract
for conducting a series of detailed failure analysis projects.
UTC was awarded project "Failure Analysis on Braking assembly damage" by
Republic of Singapore Air Force (RSAF).
Ministry of Defence awarded UTC for
failure analysis on brace structure fracture of unmanned aviation vehicle (UAV).
UTC was invited and attended 8th
Conference on Venture and Innovation (Nanjing).
UTC's Chief Consultant Dr George, YU Yonghe had visited
the site of LRT electrical fire and made his assessment.
Dr YU shared his views on the incident - "The electrical fire
was caused by electrical arcing, which produced high temperature and much heat and ignited the surrounding combustible substances, resulting in the fire".
The views are consistent/conincide with those on news reported months later.
UTC was engaged by China Taiping Insurance
for technical litigation related to accidents.
UTC was awarded three years contract for
conducting failure analysis and forensic accident
investigation by Singapore Civil Defence Force (SCDF).
2014
Dr YU Yonghe was elected to be Executive
Committee member of The Institute of Materials (East Asia).
UTC published “Enhancing transportation reliability through
effective failure analysis” in Conference of ASEAN Federation of
Engineering Organizations 2014 (CAFEO32), (Yangon, Myanmar),
10-13 November 2014.
Technical litigation on crane collapse.
Assessment on gas pipe leakage.
UTC's Chief Technologist visited European
Space Agency (Paris, France).
UTC collaborated with
Institution of Engineers, Singapore (IES)
to conduct technical training course.
UTC's Executive Director met CEO of
Job Safety Solution Ltd (China) for strategic collaboration in safety and accident investigation.
Failure analysis on gearbox damages.
UTC's Chief Consultant conducted course
“Failure Investigation and Analysis” for
Republic Singapore Air Force (RSAF).
Technical litigation and court assistance on crane accident.
UTC's Chief Technologist gave a technical talk
“Aircraft Certification” to
Aviation Industry Cooperation of China (AVIC)
Commercial Aircraft Engine Company Limited,
UTC's Chief Consultant, as Expert/Technical Assessor,
joined Singapore Accreditation Council (SAC) audit team
and conducted assessment on
Intertek Lab in
Rolls Royce (S)
for Singapore Laboratory Accreditation Scheme (Singlas).
Investigation on crane toppling accident
Condition assessment on ship propeller damages.