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1. Do not let the electric cable rub the ground or be pressed by vehicles or other
structures.
• Lighting with voltage higher than 36V must be hanged at least 2.5m away from
the working platform.
• Do not use the power grid, the structure of power distribution boards and shunts
of them during installation, to replace the electricitynetwork and the temporary
electrical equipment used on site. Never let the power cord construction and
welding wires exposed conductive parts of the structure of the building.
• The electrical equipment, cables, power consumption ... things on the field
(excluding inventory) should be considered as voltage, does not depend on
whether they have made to the grid or not.
• The electrical switching device for switching the common power grid synthesis
and power line segments for each area in the works and should be strictly
monitored so that the person cannot be responsible not automatically shut down
power. The circuit breaker supplying power to each device or device group must
have surely locked. The electrical breaker, breaker... to put in sealed box, put a
dry, safe and convenient for operation and troubleshooting. When power cut,
make sure the breaker or other electricaldevices cannot cut closedcircuit. In case
of loss of power to cut breaker to prevent the motor start suddenly when power
is restored. Do not be energized simultaneously to several devices powered by
the same breaker.
• Drive plug for portable electrical equipment must clearly shake our large
currents. Anatomy of the drive and plugs must be followed so that the extreme
point of protective wire (ground or not connected) compared with wires exposed
before closing phase and reverse and eliminate the ability to plug in the wrong
spot. Switches on mobile devices (except the working lights) to cut all phases and
installation on the device casing. Do not place the wireless switch on the mobile.
• All electrical equipment must be protected short circuit and overload. The
protective device (fuse, relay, Automat...) must conform to the voltage and
current of the device or group of devices that protect electrical.
• All metal parts of electrical equipment, power switching devices, protective
devices may have power, when parts broken insulation that has the ability to
touch, must be grounded or not connected under the current regulations do not
connect the grounding and electrical equipment. If using redundant power
independently to power electrical devices, when they lost the general grid neutral
mode of redundant power and protection measures, must be consistent with the
neutral mode and safeguards using common defense grid.

2. • When moving large objects under the power lines, measures must be taken to
ensure safety. Must be disconnected if the motion is capable of touching power
lines or lines from launch through the motion on the ground.
• Only employees assigned to the new phone is repaired, play or disconnect the
electrical equipment from the power grid. Only parts are removable cover,
remove the wires connected to the electrical equipment, repair parts conductivity
after power cut. Don’t repair, remove, and connect the wires and jobs related to
overhead power lines when it is in power.
• Close outage to repair the main line and branch line from 2 to power electrical
devices and above, must notify the person in charge of equipment. Just be
energized back of the line, after there has been thoroughly tested and reported in
writing by the person in charge of repairing. After turning off the circuit breaker
to repair electrical equipment separately, to lock the breaker and wearing
signboards energized or send people directly, avoiding cases are energized when
the repair.
• Just replaced the fuse wire running when power cut. In case of power cut, it cannot
just be doing it with a kind of fuse tube or cap, but necessarily fitting load. When
replacing the fuse tubes have power, to have protective glasses, rubber gloves,
insulated tools and standing on carpet, or insulated shoes. Never replace a fuse
when the power type. When using a ladder to replace the fuse in the power high
while there must be people who live at the bottom.
• Do not remove and insert the bulb when no power cuts. Where the power cut
workers does must wear insulated gloves and protective glasses.
• Do not use lights fixed to portable lamps. The danger of using electricityto light
a voltage not exceeding 36 V. Hand lamps with metal mesh to protect the bulb,
wire wrap wire is rubber, took power over the socket. Socket and plug voltage is
not greater than 36 V, must be painted texture and color discrimination and plug
the drive voltage is higher. The lights must be put in place working height and
angle appropriate, to not blind by the light directly emitted from the lamp.
• Not allowed to use the power to protect the school fence.
• The portable power tools (power tools,portable lamps, reducing machine's safety,
frequency transformers, ...) should be checked at least once every 3 months on
the phenomenon of cool touches on the cover, on the state of the ground wire
protection; must be inspected at least once a month for insulation of wires,
electrical power and openings. Particularly the mobile transformer outside the
above points, also to check the short-circuit of the high voltage coil and low
voltage coil.

3. • Only authorized personnel shall be allowed to work on power substations,
switchboards and site where high voltage electric equipment is installed;
• Before carrying out inspection and maintenance of electric installations, the main
switch shall be turned off and the relevant signs shall be posted;
• The area around the switch box shall be kept clean in all times and anything which
may hinder the operation of switch cannot be remained near the switch box;
• Any inflammable or explosive materials shall not be storednear switched, electric
motors, or switch boards;
• All electrical machines shall be grounded to prevent leak current;
• Test operational on the circuit breaker equipped on the electric equipment shall
be done before starting daily operation;
• In wet conditions, electrical activities shall be minimized; additional pre-cautions
shall be taken in unavoidable cases.
1) Mortar and Concrete Production
• When working in the dusty warehouse (cement, lime, gypsum ...) and in the
placement crusher, crushers, screens of raw materials and semi-finished products,
we need to ensure the requirements ventilation and dust-proof.
• Screw parts must be shielded by steel mesh. When transporting dust-formed
material, crew parts must be covered.
• Mortar and concrete mixing
When mixing tank is running or repairing, it must be lowered down to safe
location. Do not use shovels or other hand tools for take the mortar and
concrete when the tank is in of operation
• When using additive mixed into the mortar must take measures to prevent burn
injuries and must comply with the regulations (or guide) of the manufacturer.
• When transporting mortar and concrete by hand trolleys, crane, hoist must
comply with regulations
• Bridge to automobile transportation poured concrete foundation pit must be at the
top shield. The speed of cars on the bridge less than or equal to 3 km / h. Both
sides need to work with wide aisles at least equal to 1.2 m and the outer parapet
1 m
• Only removing the concrete mortar bucket slowly when the tank was stopped.
The distance from the bottom of the bucket to the surface texture ben to pour the
floor or working is less than 1m. If greater than 1 m we must use concrete trough
or pipe.
2) Formwork, Rebar and Concrete
• Formwork used to support the concrete structure is needed to be fabricated and

4. erecter in accordance with the requirements of design construction methods
approved.
• Formwork is only placed on the floor after having fixed the formwork of the
ground floor.
• Formwork erectionis at a height of 6 meters or less, we can use props forworkers
to stand and work. For the height of 6m and over, we must use props. Installation
of hung formwork or false work at the height of 8 m and over must be assigned
to experienced workers.
• Formwork erection of structural arches and thin shell must have working
platforms and guard rails. The distance from the floor formwork to work is not
more than 1.5 m. In the positionof slopping formwork, we have to form stepping
working platforms with a width of at least 40 cm.
• Mold must firmly link. The mold is only placed into the frame after all parts of
the frame firmly linked.
• Do not leave equipment, materials (not included in the design) and do not allow
those who are not directly involved in concreting to stand on formwork.
• Do not place the formwork sheets and formwork parts on the landing of the
staircase, balcony, and the slope, the walkway next to the hole or the outer edge
of the building, in vertical or inclined positions before anchoring them.
• We have to check the formwork and repair the damage immediately if any. be
repaired immediately before concreting.
• We must use special scale to go up and down the stack of formwork with height
greater than 1.5 m,
• When using large formwork and lifting devices, the lifting devices must have
audio signal.
• Only use large formwork specialized Cantilever, scaffolding floor work... after
they are tested by engineers.
• Do not use crane to simultaneously lift and move two parts of the large formwork
unless assembling some previous linked parts which are allowed in the design.
The space used to assembly of the stairs and landing must be barrier by railing.
• Do not lift and move the plate mold wall formwork panels with large surface area
less than or equal to 12 m2 when the wind speed is 10 m / s and the plate has an
area larger than 12 m2 when the wind speed by 7.5 m / s.
• Sliding formwork, climbing formwork
• In construction area with sliding formwork and climbing formwork, barriers and
signals are requested.
• Design and specialization must be followed when installing parts of sliding

5. formwork, climbing formwork and scaffolding.
• Test the mechanical force and lifting equipment when moving sliding formwork
and climbing formwork.
• The workers working at height and ones working below have to contact each
other by sound signal or light signal.
• On scaffolding, we must allow maximum load and kust put materials on the
at the specific location specified in advance in design.
• Lifting equipment and equipment used for sliding formwork installation are
requested to sound signal system and just be performed after acceptance and in-
charged person required
• During sliding time, people are irresponsible for the task not allowed to climb up
the operating floor. Workers are not allowed to stand on the operating floor. The
movement can be performed each person. To move forward and backward from
outside floor work of operating floor and higher operating floor of sliding
formwork we have to use ladder with the width 0,8m or over. To move forward
and backward between two floors, must through a hole which is used by special
ladder. After going up and down, must cover the hole.
• In construction of abutment by sliding formwork, the holes on horizontal floor
for workers moving must be arranged zigzag and if it is arranged on the same
vertical shaft, must have a cover.
3) Working Assembled
• Using cranes and other types of equipment in assembling the building structures
according to the current regulations on safety techniques and equipment upgrade
• According to specification in 2.8, we have to use scaffolding when using
electronic tools, punching, welding ... during installation on high.
• When assembling, we must use scaffolding or propped in accordance with
prescribed construction design. In case the construction engineer allows, we can
break down the design.
• The components must be streamlined; easily tie hooks and not collapsed, sliding
rotation when unloading.
• The rings used to hang hooks structures, components; we need to ensure it is not
broken, deformed when lifting.
• The structure, components which do not have specialized machinery parts are
required to be calculated location and hanging forced to ensure during lifting not
slipping and falling.
• These structures that are capable of rotation when lifting must be firmly tied and
anchored.

6. • For the structures and crane components which are easily deformed during
installation must be reinforced before hoisting up.
4) Fire Prevention and Protection Plan
• This clause provides the guidelines, instructions and requirements pertinent to
fire hazard control. The Contractor shall hold the ultimate responsibility in
ensuring ail fire prevention requirements during the course of the Construction
Phase.
• Training requirements and agreements with external organizations shall be
established and implemented. The Contractor shall provide training to selected
employees nominate personnel on the principle of fire, the prevention measures
and the techniques in fighting a fire.
• Fire prevention and protection program shall be based upon the following
objectives:
- Prevention of fires;
- Early detection;
- Control of fire spread;
- Prompt extinguishment;
- Plan for prompt and orderly evacuation of personnel.
• Prevention of Fire
The following practices shall be observed:
- Regular clean-up of debris, particularly combustibles;
- Regular thorough inspections of the work areas to detect and eliminate fire
hazards or the potential sources of fire;
- Safe storage, handling and use of combustible materials.
• Early Detection
- Early detection is performed through daily inspection potential fire hazard area
such as offices, chemicals and hydrocarbons storage area, waste storage areas
and work location involving hot work.
- The Contractor remains vigilance of their work area and removes any potential
fire hazards prior commencement of work.
• Control of Fire Spread
The Contractor shall provide adequate fire extinguishers of the correct type and
size within the Common Area and Grass Root Area.
- Fire extinguishers shall be strategically located;
- Fire extinguishers shall be clearly marked and made highly visible;
- All firefighting equipment shall be regularly inspected and periodically tested.
• Extinguishing a Fire

7. - The extinguishment of fire often involves critical matters of judgment, which
are best exercised by trained firefighting personnel.
- However, it will be necessary to contain a fire until arrival of trained
firefighting personnel before decision is made on the correct method of
extinguishment.
- The training to its nominated site firefighting personnel is good only to contain
the spread of fire. Actual firefighting shall be carried out by professional fire
fighter from the local fire-fire ting department.
• Fire Reporting
- The person discovering a fire shall alert all personnel in the immediate vicinity
and shall immediately inform his immediate or the nearest supervisors
following the flow chart to be provided by the Contractor.
- The emergency phone number for reporting fires shall be prominently
displayed.
• Fire Extinguishers
- The Contractor shall study the proper type and required quantity of the fire
extinguisher, and provide impletion plan, and it will be subject to the
Engineer’s approval.
- Damaged, malfunction or empty fire extinguishers, shall be serviced, repaired
or refilled in a timely manner. The location of temporary mounted fire
extinguishers shall be clearlymarked and freeaccess to such fire extinguishers
shall be maintained.
- Based on the identified potential fire hazards, fire extinguishers located on site
shall be suitable for the various classes of fire and with a content of at least 9
kg.
5) Transportation
Transportation of materials and equipment rules shall be strictly follows as stated
below:
• Never overload the vehicles when transporting;
• Properly tied and used board (wooden or other) to prevent slippage of the
equipment or material when it is in the vehicles;
• When transporting machine parts with complicated shapes, dangerous objects,
fragile materials, or slippery materials, always follow the instructions of the
person in charge;
• Always inspect the transport tools and keep them well maintained;
• Load the material as low as possible and as far forward as possible. If the material
can easily tumble down or roll off, use a reinforcement or support to fix it

8. securely, or tie it securely;
• Handle Material and Equipment with a lot of care.
7. Emergency Call out Procedure:
1) Initiation:
• Site with staff working on night works, shall initiate the emergency call out
following the emergency response chart.
• The site Engineer and Safety Officer (2nd Stage) will be called, and if they cannot
be contacted, their level will be skipped and the 3rd Stage will be alerted. In
addition, the
initiator will take prompt action to mitigate the situation. When he is released he
will report on:
- The number of people killed / injured / involved.
- Action taken by responsible site supervisory personnel.
Other vital information in brief.
• The site Engineer will also report the matter to the Chief Engineer or Construction
Manager and contact the duty telephone on the situation.
2) Second Stage (2nd stage):
• Safety officer,upon receiving information will checkthe completeness and assess
the situation. If necessary, he will travel to the site to check himself. Upon
verification of all information involved, he will initiate the -3rd stage with given
telephone number(s).
3) Third Stage (3rd stage):
• The persons at the 3rd stage (Project Manager) shall assess the situation severity
of accident / incident and decide whether they will proceed with Emergency call
out or not. If the situation required, he will call to Japan head office.