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A Great Workforce A Great Workplace
A Great Workforce A Great Workplace
Er. Tan Kee Chong
Deputy Director (Engineering Safety)
Occupational Safety and Health Division
WSH
Performance
of the
Crane Industry
A Great Workforce A Great Workplace
Crane-related Statistics + Dangerous
Occurrence
Enhancement to Policies Concerning Crane
Operators
Outline
A Great Workforce A Great Workplace
Crane-related Statistics
0
5
10
15
20
25
30
2009 2010 2011 2012 2013 2014 2015
21
26
20
18 19
12
17
Crane-related Dangerous Occurrences – 2009 to 2015
17 crane-related
dangerous occurrences to
date, compared to total of
12 cases in 2014
Dangerous Occurrences
Collapse or failure of a crane, derrick, winch, hoist, piling
frame or other appliance used in raising or lowering
persons or goods, or any load bearing part thereof (except
breakage of chain or rope slings), or the overturning of a
crane.
* as of 31st August 2015
A Great Workforce A Great Workplace
Crane Related Dangerous Occurrence
A Great Workforce A Great Workplace
Crane Related Dangerous Occurrence
A Great Workforce A Great Workplace
Dangerous Occurrence Cases
A Great Workforce A Great Workplace
Dangerous Occurrence Cases
crane mechanic noted that the hoisting wire rope was misaligned within its
drum during set up. The crane operator fully extended the crane boom to
uncoil the wire rope and as he was about to coil back the wire rope, he slewed
the boom of the crane slightly to the right and caused the crane to collapse.
A Great Workforce A Great Workplace
Dangerous Occurrence Cases
the crane operator was hoisting a clamp shell bucket out of its housing which
was located on the barge. He then slewed the crane to the right when the
boom suddenly started to fall and collapse on the deck of a nearby hopper
barge
A Great Workforce A Great Workplace
Dangerous Occurrence Cases
the truck-mounted mobile crane was deployed outside a maintenance workshop
to assist in the assembly of a grab bucket. When the crane lifted the assembled
grab bucket to about 0.5m above ground, the crane structure suddenly broke
off at its slewing ring, and separated from its chassis
A Great Workforce A Great Workplace
1. Failure to maintain Cranes in good working order
2. Failure to establish and implement a proper Lifting Plan
3. Failure to ensure that adequate safety measures are taken in respect of any Crane used at the workplace
4. Failure to maintain Lifting Gears in good working condition
5. Failure to implement a proper Permit-To-Work System
Top
5 C
on
trav
en
tio
ns
fro
m E
nfo
rce
me
nt
Op
s
41%
27%
17%
8% 7% Failure to maintain cranes in good working condition
Failure to establish and implement a proper lifting plan
Failure to implement adequate safety measures
Failure to maintain lifting gears in good workingconditionFailure to implement a proper permit-to-work system
A Great Workforce A Great Workplace
Faulty safety latch of crawler crane auxiliary hook
Misalignment of
hoisting wire rope on
winch
Key Findings
1. Failure to maintain cranes in good working condition
A Great Workforce A Great Workplace
Corrosion of hoisting and luffing wire ropes
Faulty over-
hoist limit
switch
Key Findings
1. Failure to maintain cranes in good working condition
A Great Workforce A Great Workplace
Frayed webbing
sling Kinked
wire rope
sling
Key Findings
4. Failure to maintain lifting gears in good working condition
A Great Workforce A Great Workplace
Lorry loader
carrying out
pick-and-
carry
operations
Key Findings
3. Failure to implement adequate safety measures
A Great Workforce A Great Workplace
Rear stabilizers of lorry loader used
to raise and support chassis; lorry
loader operating on ground beyond
acceptable slope
Key Findings
3. Failure to implement adequate safety measures
A Great Workforce A Great Workplace
Lifting plan not
in accordance
with generally
accepted
principles of
safe and sound
practice
Key Findings
2. Failure to establish and implement a proper lifting plan
A Great Workforce A Great Workplace
• PTW not assessed by Safety Assessor
• PTW approved by WSH Coordinator
instead of Project Manager
Key Findings
5. Failure to implement a proper permit-to-work system
A Great Workforce A Great Workplace
Enhancement to Policy concerning Crane Operators
A Great Workforce A Great Workplace
Enhanced Medical Examination for Crane Operators
- Aging community of crane operators
- Ageing workforce is more susceptible to
chronic diseases
- Important that crane operators undergo
health checks for early detection and
proper management of chronic ill health
- Improve crane operators employability and
allows crane operators to remain in the
profession for a longer time
- health of crane operators is also critical to
ensure crane safety
Effective 1 April 2016
A Great Workforce A Great Workplace
Enhanced Medical Examination for Crane Operators
Age (years) Health Checks Occupational Therapist
Assessment
Below 50 No No
50 – 64 Every 2 years No
65 - 69 Every year No
70 and above Every year Yes*
* Additional operation test will be required if operator fails clinical therapist
assessment
A Great Workforce A Great Workplace Specialised Training Course for Mini Crane Operators
- Mini cranes are mobile cranes with safe working load not more than 5 tonnes
- Smaller in size, less complex, designed to lift significantly lighter loads and
generally have a lower risk as compared to typical mobile cranes
Effective 1 Jan 2016
Source: http://www.jpnelson.com.sg/index.php/en/products/crane/mini-crane
A Great Workforce A Great Workplace Specialised Training Course for Mini Crane Operators
- a specialised training course for mini cranes will be made available in the first
quarter of 2016 to raise the competency of mini crane operators
- mini crane operators will no longer be required to hold a mobile crane license
from 1 January 2016. Instead, will be required to attend the specialised
training course
Operators of mobile
cranes with Safe Working
Load
Current Requirements From 1 January 2016
Not more than 5 tonnes
(mini cranes)
Holds a valid mobile or crawler
crane operator licence
Holds a certificate following the successfully
completion of a training course acceptable to the
Commissioner for WSH for the operation of mini
cranes, or holds valid mobile or crawler crane
operator licence
More than 5 tonnes Holds a valid mobile or crawler
crane operator licence
Holds a valid mobile or crawler crane operator
licence (no change)
A Great Workforce A Great Workplace
Effective date of implementation:
All mobile cranes registered with MOM on or after 1 August 2015 will have to be equipped with data loggers; and All existing mobile cranes registered before 1 August 2015, will be required to be retrofitted with data loggers by 1 August 2018.
Data Logger on Mobile Cranes
A Great Workforce A Great Workplace
• 601- Mobile Crane - Truck Mounted Variable Boom
Length Type
• 602- Mobile Crane - Truck Mounted Fixed Boom
Length Type
• 611- Mobile Crane - Crawler Mounted Variable
Boom Length Type
• 612- Mobile Crane - Crawler Mounted Fixed Boom
Length Type
• 621- Mobile Crane - Wheel Mounted (w/o prime
mover) Variable Boom Length Type
• 622- Mobile Crane - Wheel Mounted (w/o prime
mover) Fixed Boom Length Type
• 651- Mobile Tower Crane (Horizontal Boom)
• 652- Mobile Tower Crane (Luffing Boom)
Note:
1. This classification refers to MOM’s classification
codes for lifting machines
2. Lifting machines under the above classification
codes that does not require the installation of
a load radius indicator (LRI) will be exempted
from the data logger requirements
Examples of types of mobile cranes
required to be installed with DLs
The diagrams/figures are reproduce from Annex A of SS 536 : 2008 with the permission of SPRING Singapore. Singapore Standards are
available from the Singapore Standards eShop
Data Logger on Mobile Cranes
A Great Workforce A Great Workplace
WSH Council has launched a co-funding scheme which covers 50% of the cost of installation up to $5,000 for each registered crane. The funding is available from 3 August 2015 on a first-come-first serve basis and it will cease on the 31 July 2018 or when the funds have been fully disbursed.
Funding Assistance to support existing fleet of MC
Data Logger Funds for Cranes
www.wshc.sg/dataloggerfund.
A Great Workforce A Great Workplace
3 Simple Steps
Data Logger Funds for Cranes
STEP 1 Engage crane manufacturers / DL suppliers to install eligible DL on the existing mobile cranes
STEP 2 Engage an Authorised Engineer (AE) to inspect the crane to verify that DL installed is according to requirements
STEP 3 Make the fund application at www.wshc.sg/dataloggerfund. Submit invoice and report from AE
A Great Workforce A Great Workplace
End