High-rise buildings are the
current trend in construction nowadays because of its convenience, advantages,
architectural design, grade and luxury. Not known to many, it has many safety
risks for occupancy. Mr. Nguyen Phu Hoi made a case study which mainly focused
in safety aspects to come up with the solutions on how to control risk and to
prevent accidents as much as possible as well as to foresee/handle
emergencies/contingencies during the construction duration.
The
most frequent problems/accidents related to safety in high-rise construction
often include:
1.
Ladders
2.
Falling Debris
3.
Falling From Heights
4.
Electrical shock & Machinery
5. Trips
and Slips
6. Crane
and hoist operation
Due to time and resources
constraints, Mr. Hoi’s study focused only in the following objectives:
1. To study SMS (Safety
Management System) at a high-rise construction project in Vietnam
2. To study safety risk in
construction of high-rise building in Vietnam
3.
To analyze strength, weakness and propose recommendations for improvement of
safety in high-rise construction in Vietnam
Conclusion
Throughout
the core basis of safety literature and actual high-rise tower now under
construction, the main important issues can be summarized as below:
(1)
Summary of Safety Management System (SMS)
The
SMS is a must for every construction project, especially for high-rise
construction because this area is consisting of many latent hazard and risk.
Without SMS, the owners, developers, investors, shareholders, and managers cannot
reach the goal and target as expected. On the other hand, the contractors,
suppliers, installers, and workers cannot fulfill and complete their mission.
In
overall, without SMS, the construction of a high-rise will become very
dangerous and the casualty/damage cannot be prevented. The SMS must be set up
and strictly implemented and it should comprise of the main frames:
- - Safety
Policy
- - Safety
Organization
- - Safety
Plan & Program
- - Hazard
& Risk analysis and identification
- - Safety
Documenting & Recording
- - Safety
Review & Upgrading
In
addition, high-rise construction project should also have strong and powerful
PM/CM team who will monitor, control, and handle the safety matters (e.g.
review and approval of safety plan/program submitted by the contractors and
sub-contractors). It is also their duty to strictly implement these safety
plans which normally and basically include the following:
-
Safety management/hierarchy/organization
-
PPE availability, use and condition
-
Scaffolding (fixed and mobile) including ladders & platforms
-
Electro-mechanical activities and controls
-
Site status
-
Temporary power supply and tools
-
Health & welfares
-
Storage condition
-
Fire prevention
-
Waste/pollution control
-
Monitoring and control of working on height
-
Aid/first aid and evacuation
-
Emergency plan for unanticipated circumstances
It
is recommended that for bid and high-rise construction project, the owner
should seek and hire a professional project management team usually PMC
companies (project management consultancy), as the project & construction
manager and their representative as well. The PM/CN then will be
enthusiastically and heartily dedicated to the multi-goal completion of a
high-rise construction project: schedule reached, within budget, quality
achieved and also well perform the high safety requirements/demands.
The
PM/CM as the owner representative should have strong and effective ways to
force all contractors and their subs at site to totally and absolutely comply with
safety rules. It is necessarily to cleverly apply the method of fine and reward
to guarantee the safe situation at site workplace.
(2)
Summary of Hazard/Risk Identification:
This
is the most important portion of every specific SMS especially for high-rise
project. Depending on the specific condition and particular situation, the
PM/CM should:
(i)
Thoroughly analyze all aspect of the project: geographical, structure,
sub-water, vicinity, surrounding inhabitants
(ii)
Far-seeing and fore-seeing for all possible causes/reasons may lead to hazard/risk
(iii)
Focusing in the most would-be hazard/risk of high-rise construction:
fall/falling, trip/slip, fire, electrical shocking/flashing, tower crane/hoist,
lift/elevator, scaffolding, PPE
(iv)
Periodically and frequently (weekly/bi-weekly) conduct site-safety check
carefully and thoroughly. The same for site-safety audit
(v)
Evaluation the site-safety check/audit and requires improvements
(vi)
Always available for an emergency plan to cope with an unanticipated
circumstance (drill of evacuation…)
(vii)
Always keep best relationship for availability of a hot-contact with nearest
local authorities and utilities
(viii)
Frequently review, analyze and search for other possible hazards and identification
of its risks
(3)
Strength & Weakness of the actual SMS at Pullman Saigon Center project
Strength:
- - Strong
and powerful: the PM/CM monitor, control and force the contactors & their
subs to execute the safety rules.
- - Standardized
& professional: the safety rules & items based on the advanced
standards/norms of site-safety and implemented by a long-history PMC like
Turner.
- - Sufficient:
the SMS and its rules/items comprising the most frequent issues in high-rise
construction
Weakness:
- - Lack
of identification of hazard/risk from some potential possibilities such as:
glass wall, lift, sub-water, overhead power line
- - No
considering on the role of 3rd safety party for audit/verification
- - Only
involving the actions in construction phase.
- - No
mentioning the other phase: commissioning and delivery
- - No
mentioning on safety training, especially for induction training
- -Take
much time much, paper for meeting and inspection so the time schedule may be
impacted.
(4)
Suggestions & Recommendations
- - Build-up
a comprehensive safety plan and extensive safety programs: the plan should
involve all factors that possibly cause risks and hazards of unsafe conditions.
- - Strictly
abiding and complying with local code and governmental regulations and
stipulations.
- - Build
and maintain very good relationship with local authorities and utilities.
- - Pay
special attention on the geographical, geological, environmental, hydro-geological
characteristics of the area, to foresee/ anticipate suitable counter measures
and actions.
- - PLAN
– DO – CHECK – ACT: strictly and thoroughly executing the established safety
plan/program; frequently review and improve for better outcomes.
- - NO
COMPROMISE on safety especially in high -rise construction.
- - Ready
for safety egress in site for rescue and emergency exit
- - Emergency
Action Plan: ready for reaction plan/scenarios to any unexpected
circumstance/contingency; prepare plan, scenarios and evacuation method for
readiness and coping with even the worst case might be happened: fire,
collapse, seismic, terrorism
- - Periodically
organize training, re-training for emergency drill/rehearsal and contingency
scenarios of evacuation.
- - Check
and review design for specific items which may cause risk of un-safety by
professional 3rd party.
- - NO
SMOKING at construction site: so no hazard and no risk for fire
occurrence. Of course we should strictly control and monitor all possible
causes and reasons may lead to fire and explosive from materials and chemicals
and from interaction among themselves.
- - Increasing
safety awareness: although we have rules, notices, regulations, fine
sufficiently but the hazard/risk/accident are still be possible to occur. In
order to avoid and prevent more and more the possibility of hazard, risk and
accident, the awareness/perception on safety in high-rise construction of every
involved people must be increased and enhanced.
This can be got by education
level of every worker, person participated on site. This can be increased by
frequently training/re-training them on safety subject by various type:
oriented safety, 15-minute tool-box meeting every morning, safety inspection
daily, weekly safety audit, safety signs/panel/billboards/notice on site,
safety lunch for every 100,000 safe-working hours.
- - Motivation
and incentives: similar to job and wage, performance and bonus; safety in
high-rise construction needs to have encouragement to the people who are good
examples for well-performed of safety on site. There are various ways/forms to
enhance and support safety goal: safety lunch, safety lottery, safety award to
the best-performed worker, bonus, pay-rise, promotion etc.
- - More
attention – less occurrence: the more attention on safety the less accident and
problems occurred.
- - Strengthen
functions of employers and supervisors: employers and supervisors must ensure
compliance with the provisions of the OHSA and its
regulations. Key requirements for employers include:
(a)
Employer
(i) instruct, inform and
supervise workers to protect their health and safety
(ii) appoint competent persons as
supervisors
(iii) take every precaution
reasonable in the circumstances for the protection of a worker
(iv) prepare and
review at least annually a written occupational health and safety policy, and
develop and maintain a program to implement that policy if the
workplace has six or more full-time employees
(v) post a copy of
the occupational health and safety policy in the workplace, where workers will
be most likely to see it
(b) Supervisors
(i) ensure workers
work in compliance with protective devices, measures and procedures required by
the act and regulations
(ii) ensure workers
use or wear any equipment, protective device or clothing required by the
employer
(iii) advise workers of any potential or
actual health or safety dangers known by the supervisor
(iv) if required, provide workers with
written instructions on the measures and procedures to be taken for the
workers’ protection
(v) take every
precaution reasonable in the circumstances for the protection of workers
* Frequently carry out preventing
methods/measures for safety:
* Periodically check and verify
crane/hoist by 3rd independent parties.
* Frequently training and
certificating operators
* Review and amendment/adjusting
safety plan/program from safety audits
-
Frequently
TRAINING on safety to all workers. Make sure them always to keep in mind that
safety does not depend on luck or destiny but it depends on themselves.
His thesis abstract is copied and
pasted below.
Abstract
Construction
is indispensable for the growing up of any country and cities. The more
development of society/community, the more projects are going on. Construction
industry brings up the new picture of country/city; attracts investors to come
in and provides more jobs/incomes to people/community; especially for the
under-developing countries.
However,
construction industry is one of the most dangerous/risky economic sectors. In
Vietnam, in the year 2011, official reports recorded that 5896 accidents occurred
in construction led 6154 injuries included 504 severe cases with 574 deaths.
(SG newspaper dated 26-June-2012). Note that 2011 is the year which
construction was depressing nationwide due to the problems of high inflation
and high interest rate. Further a certain accident amount was not put in the
above official report.
Accident
cases from machines/tools always being a major percentage but deaths are mainly
by falling and electric shocks. In most cases, the control of safety management
at sites is not strictly, frequently slacken while the owner and contractors
only focusing on completion schedule and profits; insufficient interest to
safety for people on sites. Another part is from the lack of
understandings/perception on safety of the workers themselves.
Everyone
is aware on the important of safety, everyone is told about the preciousness of
human being and many losses comes from the accidents; but casualties still be
recorded. How to find out and apply an effective manner to minimize and – may
be - eliminate all unsafe conditions and possible causes /risks of the would-be
hazards?