The purpose of this method is to describe the methodology and sequence involved in construction work for CCB building and to detail out the steps to be taken in order to meet the technical requirement of Van Phong 1 thermal power plant project
PURPOSE
This article outlines the methodology and sequence of construction work for the CCB building, detailing the necessary steps to fulfill the technical requirements of the Van Phong 1 thermal power plant project.
- Plant Project/Project: Van Phong 1 BOT Thermal Power Plant Project
- Company/Owner: Van Phong Power Company Limited (VPCL)
- This method statement describes the work procedures to be carried out during an execution stage of finishing works as below
No Contents of Finishing Work
TOOLS & EQUIPMENTS
In accordance to requirement for each working procedures
RESPONSIBILITIES
- It is overall responsibility of Project Manager / Engineering Manager to organize resources prior to perform construction activities as per project specification in compliance with quality, schedule & safety requirements
- It is the responsibility of Construction Manager/Site Manager that construction activities are executed according to the relevant project specification in compliance with quality, schedule & safety requirements
- EHS Manager will ensure coordination with Site Engineer that all measures/construction taken shall be maintained till completion of job
- The QC Inspector will ensure that the works are executed according to the requirements of dossier are fulfilled.
MATERIAL
- According to approved MAS (or reviewed) by Owner for each finish item work
- All Material shall be of commercial quality and of proper, free from defects impairing strength and/or durability comply with approved material by Owner
- Materials shall be comply with Technical Specification to ensure required Quality (If any case Material shall/or follow manufacture recommend contractor will submit for Owners approval)
- Sampling sequence: depend on each type of material and each building.
PROCEDURE AND SEQUENCE
CONCRETE BLOCK WORK
Before installing hollow blocks, a thorough survey of all walls will be conducted, marking their locations as per the approved construction drawings This process will be overseen by a surveyor and checked daily by a supervisor All walls must be constructed to precise dimensions, ensuring they are plumb and square in accordance with the approved drawings.
- The hollow block will be fill by cement mortar at the location that mentioned on mix design
- Surface shall be cleaned before installation
- From the established site datum level, periodically check course levels, window or sill levels, lintel level and roof level
- All accessories for block works shall be installed as per standard drawing
- Erect walls to comply with specified construction tolerances, with course accurately spaced and coordinated with other construction(in accordance to approved Drawing)
Proper planning and design of scaffolding by the subcontractor is essential, requiring approval from the Engineer before work begins The scaffolding must be sufficiently strong to support all anticipated loads and should include two sets of vertical supports for enhanced stability.
- Mixing of Mortar shall be in measured with proper method and checked before mixing
- The blocks should be laid on full mortar bedding and in such a way that no cracks are formed
[Concrete Hollow Block Mortar Bedding Concept]
- Place reinforcement in accordance with the size, type and location as per approved Standard Drawing
- The contact places of masonry with concrete structures shall be reinforced with proper mesh to prevent the cracks and the mesh will be overlaped 100mm before plastering
- Filler board and sealant shall be applied on joint between structure and block wall as per standard drawing
- How much the thickness of mortar layer is
- Allowable tolerance for surface checking after brick laying?
- Wire net shall be installed at the contiguous area of block and column or girder and how width it is
Accessories as per approved Standard Drawing
PLASTERING WORK
6.2.2 Surface Preparation and Installation of Plaster Accessories
- Surfaces to receive cement plaster shall be cleaned of all projections, dust loose particles, grease and other foreign matter Plaster shall not be applied directly to
- Concrete or masonry surfaces that have been coated with bituminous compound, Surfaces that have been painted or previously plastered
Before beginning plaster work, it is essential to thoroughly wet masonry surfaces with a clean water fog spray to ensure a uniformly moist condition Additionally, all accessories should be carefully checked for proper alignment prior to starting the work.
- All Accessories shall be prepared and installed in accordance to approved Standard Drawings
- All undercoats shall be scratched to form an adequate key for the next coat
- Level Guides shall be provided up to required thickness as per approved Drawings
- Plastering shall proceed only when the masonry block works are completed
Cement plaster must be applied following the specified thickness outlined in the approved drawings Mortars will be utilized to create landmarks of appropriate size and thickness as required.
- For external plaster, the plastering operations shall be started from the floor and carried downwards
- The internal plaster, the plastering may be started wherever the building frame, roofing and brick work are ready
- The rough plaster shall be started from top to bottom It’s no needed smoothing surface but the tight press up tile and allowed to dry sufficiently not rapidly
- Curing shall be spraying with water as often as necessary to keep the plasterwork damp
Plaster work must be flawlessly level, plumb, square, and true, adhering to specified tolerances without any waves, cracks, or imperfections It should be meticulously formed around angles and contours, extending smoothly up to screeds To avoid sagging and dropping of applications, special care is essential Additionally, the finish coat should be seamless, with no visible junction marks where one day's work meets another.
- Several types of requirements for plastering work:
+ Normal condition: Cement plaster shall be applied in two coats
1) Brown Coat - Shall be applied with sufficient pressure to fill the grooves in hollow block or concrete to prevent air pockets and secure a good bond Brown coat shall be lightly scratched
2) Finish Coat - Just before the application of the finish coat, brown coat shall again be evenly moistened with fog spray Finish coat shall be floated first to a true and even surface then troweled in a manner that will force the sand particles down into the plaster Plastered surfaces shall be smooth and free from rough area, trowel marks, cracks and blemishes
+ Wet condition: Cement plaster with liquid waterproofing
+ Chemical resistant finishing: Cement plaster with chemical resistant
The sand and cement mix must be precisely measured to address any surface irregularities, ensuring a smooth and even finish Straight edges should be utilized to achieve a flawless surface, with a consistent texture and no visible joining marks All corners, edges, and angles need to be meticulously aligned to maintain straightness and plumbness Additionally, exposed angles and junctions around walls, doors, windows, beams, and slabs must be expertly finished for a neat and uniform appearance.
Plastering items amongst all other things as described in various items also include
To ensure optimal results when applying cement plaster, it is essential to cure it by keeping the surface moist for at least one day post-application Utilize fog spraying after the initial set to prevent drying out Additionally, proper surface preparation is crucial to achieve the specified average thickness and proportions of the cement plaster.
- All labor, materials, scaffolding, use of tools and equipment to complete the plastering work as per specifications
- Curing as per Specification and requirement
- Cleaning the surface of doors, windows, floors or any other surfaces where plastering might have splashed
After installing the floor tiles, complete the plastering above the terrazzo, plain cement tiles, or iron skirting as specified by the Engineer This finishing work should be rounded or shaped according to the project's requirements.
- Strip metal lath centered over junctions of dissimilar backing materials and casing beads terminations of plaster finish shall be installed
- Corner and horizontal beads shall be level, vertical beads, plumb, straight and true, assuming proper plaster thickness
- Plaster Stop shall be used where called for or as required to stop plaster surface against a dissimilar to form a neat and definite joint
- At all control joint locations install back to back square nosed casing beads
Repair all damaged plaster and address fine cracks, pits, checks, waves, blisters, and other imperfections that the Owner believes will negatively affect the appearance, longevity, and functionality of the finished surfaces.
- All repairs shall be used approved material
- Site will be kept clean and tidy during the works and all the debris / waste material will be cleaned and carted away to approved dumping area.
TILING WORK
- Substrate shall be prepared as described hereunder irrespective of the tiling system used
- Manufacturer Technical Data shall be followed
- The substrate must be structurally sound, cement laitance free, clean and free from dirt, oil grease or other containments and loose or friable particles
- Weak concrete and/or cement laitance must be removed preferably by brush and/or vacuum
For effective large repairs to the substrate, including filling blowholes and voids, it is essential to use the appropriate products as outlined in the approved concrete repair procedure Additionally, the substrate must be thoroughly saturated with water—except when dealing with PVC tiles—to ensure a surface saturated dry condition before application.
- Variation in level must be in accordance to approved Inspection and Test Plan
- Levelling and Slope shall be provided in accordance to approved Drawing and location of any drain to prevent ponding after construction
[Cutting and Openings around M&E outlets]
- Installation of wall tiles shall start from bottom and progress upwards in true line, plane and vertically
After evenly applying the adhesive to the prepared surface, firmly press the soaked tile (excluding PVC tiles) into the adhesive mortar to ensure uniform bonding Make any necessary adjustments within the timeframe specified in the technical data for the adhesive used.
- Even joints shall be provided with the help of plastic spacers and no defective tiles shall be used
- Proper bonding shall be assured by using right tools for application and combining the cement material on the plastered walls
To ensure optimal results, joints must be thoroughly cleaned immediately after installation, and tiles should be maintained in a clean condition at all times Any stains should be addressed and cleaned before the setting or drying process begins.
- Control Joints, Expansion Joints, Column wall and Beam wall joints shall be provided as per the construction drawings
- The area where tile work to be done shall be barricaded with warning tapes to avoid foot traffic and other trades activities in that area
- Defective tiles(Stones) shall be segregated and not be used in permanent work except as selected cut pieces where required
- Tiles(Stones) shall be laid in true plane in the given elevation by skilled tile fixers within the allowable tolerances as per approved Inspection and Test Plan
Full bonding is requested and any tile with hollow-sounding shall be replaced This is the critical condition for inspection Please state it out.
- Joints shall be maintained uniform and straight with the help of plastic spacers
For optimal bonding, tiles and stones should be firmly pressed onto the adhesive mortar, and any joints must be cleaned immediately after installation It is essential to maintain cleanliness throughout the process, ensuring that any stains are removed before the material sets or dries.
- Smoothness of Tile(Stone) Surface will be checked after and during installation continuously
[PVC and Vinyl Tile Installation]
- The substrate shall keep dry and clean in all the time to assure proper bonding
- The floor area shall be divided into sections prior to installation
- Bonding shall be applied in one section at a time
- Tile laying shall be started at the centre and work outwards
- Filler application procedure is similar for all types of ceramic tiles as described below and further the grouting is not applicable for PVC and vinyl tile systems
- At least after 24 hours, when the tiles are set, joints shall once again be cleaned and QC inspector shall check the work prior to joint filling
- After rectification of any defects, properly mixed joint filler shall be applied to fill the joints completely using diagonal strokes with a hard rubber
- Excess joint filler shall be cleaned off the tile surface with a wet sponge while the filler is still fresh
- All tools and application equipment shall be cleaned with water immediately after use
- Curing shall be carried out with proper protection to avoid any tapes
- Upon completion of refractory tile installation, final inspection shall be done as per approved ITP.
RAISED FLOOR WORK
- Concrete surface below raised floor shall be repaired and cleaned
- Walls shall be plastered and painted above the proposed finish floor level
Before installing raised floor panels, ensure that all service lines, including pipes and wiring, are completed A dust-proof coat must be applied prior to the installation of the raised floor Additionally, cable trays and electrical panel supports should be installed by other contractors in accordance with the scheduled discussions before commencing the raised floor work.
6.4.2 Determination of border panel sizes
A raised floor panel plan must be created, ensuring that one dimension of the space is divided by 600 mm, which is the width of the panel, in accordance with the specifications outlined in the approved drawing.
The initial border panel will begin with a full size of 600mm, while the width of the opposing border panel will be adjusted based on the remaining distance of the specified dimension.
- Same procedure shall be followed to determine the border panel in transverse direction
- One end of the edge panel shall be laid on edge angle which shall be connected to the wall
6.4.3 Installation of wall edge angle
To accurately establish the raised floor level, mark it on one wall and transfer this height to the remaining three walls using a laser Then, snap a chalk line to indicate the finished floor level.
- The wall angle shall be attached securely using anchors at the required level and the joints between inside and outside corners of moulding shall be kept tight
- Centre of all Pedestal positions shall be marked on the floor as per determined layout
- Pedestals shall be positioned along the first longitudinal stringer direction at 600mm spacing
- A guide string shall be stretched above the longitudinal stringers at the required top level of the stringer
To ensure proper alignment, the main stringer should be securely attached to the square head of the pedestal Adjust the height of the pedestal by using a guide string to maintain the top level of the stringer at the desired height.
To ensure a precise grid layout, install adjacent pedestals in the same manner as previously described Additionally, secure two transverse stringers between the installed longitudinal stringers, and measure the diagonal distances to confirm the grid's squareness.
- After verification, pedestals shall be glued (or anchored) in position as specified by manufacturer
- Cable Tray and additional supporting required for reinforce access floor panel shall be designed and considered in accordance to actual layout and site condition
6.4.5 Installation of Longitudinal and Transverse Stringers
- After fixing the pedestals in position longitudinal and transverse stringers shall be fixed in to the opening provided in head gasket
- Screws shall be driven through the holes provided, ensuring electrical conductivity with frame, screws and pedestals to facilitate earthing
- The earthing of the structure shall be carried out by connecting some perimeter points already prearranged to the earth network
- Panel installation shall be started after installation of whole grid structure
- Edge panels are cut individually with a straight sharp edge to ensure a good contact with wall surface
- Floor panel shall be installed on the grid structure without leaving any gap in between panels
- Installed floor panels could be removed with proper equipment to lifter in case for any adjustment or make an inspection
The installation of removable access floor panels will occur once the frame is complete During the cabling process, these panels will be temporarily removed from the designated pulling area and will be handled with care to avoid any damage during reinstallation.
- During installation and working period, Access Floor Panel will be protected with proper PVC or other proper materials to prevent damage.
CEILING WORK
- Concrete surface above ceiling shall be formed finish as per the construction drawings
2/ Duct, FF, lighting conduit, etc
- Supports for any lighting or other fixture which requires additional support shall be provided in accordance to requirement
To ensure optimal installation, all ceiling panels must be kept clean, dry, and shielded from environmental factors It is essential to remove the panels from their cartons before installation to allow them to acclimate to the interior conditions.
6.5.2 Determination of border panel sizes
- Ceiling plan shall be drawn and one dimension of the space be divided by 600 mm (panel width) lines
- Then border panel sizes shall be determined by symmetrically dividing the remaining distance in both sides
- If the remaining distance is too small, one panel width shall be added to the balance distance and divided by 2, to increase the width of border panel
- Same procedure shall be followed to determine the border panel in transverse direction
To accurately install a false ceiling, begin by marking the desired ceiling height on one wall Then, use a water level or laser to transfer this height to the remaining three walls Finally, snap a chalk line to establish a clear guideline for the finished ceiling level.
- The wall angle shall be attached securely using expanding anchors and the joints between inside and outside corners of moulding shall be kept tight
- Manufacturer Technical instructions shall be followed
- Hangers shall be installed above the main beams typically in accordance to Manufacture recommend
- A chalk line shall be drawn on the concrete surface and position of hanging rod shall be marked and hangers be attached in correct position
- A guide string shall be stretched from one end of the room to other, below the wall angle where the first main beam will hang
- The height of the rod shall be adjusted with the help of guide string, so that the main beam is held at the correct height
- One end of the main beam section shall be cut so that cross tee route hall is locating at the correct position from the end wall
- All rod hangers shall be connected to main beam at the correct level
- Additional sections shall be joined to main beam as required to reach the other end wall
- Leftover pieces of main beam from the first row shall be used to start the next row
- The process shall be repeated for other main beams
To properly install the Cross Tee, position one end against the wall angle's edge and cut the opposite end at the intersection with the guide string.
- Uncut end of the cross tee shall be inserted in to the main beam and the cut end shall rest on the wall angle
- Repeat the procedure for other border cross tees
- Two cross tees shall be installed between the two main beams in line with the first two border cross tees
- The diagonal distances of 600x600 mm opening shall be measured and compared to verify the grid to be squared
- If it is not square, one of the main beams shall be shorten until the diagonals are equal
- Panel installation shall be started after installation of whole grid structure
- Panels are slightly tilted and lifted above framework and gently rested on cross tee and main beam edges
- Border panel shall be measured cut individually with a straight edge using a very sharp utility knife
- Lighting and other fixtures shall be supported by the grid itself and not by the ceiling panels
- Extra hangers shall be provided lighting and other fixtures depending on the size and weight of these fixtures
- Prior to the delivery, detailed and comprehensive arrangements will be made to ensure the most efficient hoisting and distribution of materials into the site areas
- All materials delivery will be carefully supervised and coordinated and proper documentation will be kept throughout the contract period
- Such deliveries will be arranged in conjunction with site requirements and programs need
- Upon delivery, material and equipment will be unloaded by crane or bottom truck with appropriate lifting capacity
- All materials shall be inspected to check the quality.
DRY WALL PARTITION
6.6.1 Layout marking or setting out
- Survey team will carry out layout marking as per approved drawing in concurrence with the schedule of work The layout would be marked with chalk line on the floor
- These lines will get transferred to the slab with the help of Laser/plumb to maintain the verticality of Partition
The type of partition will be marked alongside the marking, for easy reference
- The level and line for setting out would be taken from the authenticated bench mark and grid lines The layout
6.6.2 Frame work for partitions and lining
- Top tracks will be fixed onto the soffit as per the particular wall type
- The tracks will be fixed securely with wall plug & self taping screws, and the floor tracks will also be fixed in the same manner with same hardware
- The studs will be installed as per approved shop drawing between the top and bottom tracks
- The frame work will be inspected by Site Engineer against shop drawing details and discrepancy, if any will be rectified prior to proceeding further
6.6.3 Frame work for ceilings and Boarding for Partition
- All hangers are fixed to the soffit of slab with the help of anchor nails in accordance to specified spacing center to center
Once the hangers are securely installed, the wall angles are attached to the perimeter walls of the ceiling area Following this, the main channels are fastened in place using channel screws.
- After fixing main channels then the furring channels are fixed to the bottom of main channels in perpendicular with the help of channel screws
- Boards will be installed along the stud direction with plaster board screws The screw heads will be driven 2-
3mm from the external face to allow for the filling of screw heads
6.6.4 Door / Window openings(if required)
- For doors and window openings, as per the approved drawing and door opening schedule
- Frame work would be done as shown in the shop drawing details Particular attention would be given for squareness of openings.
PAINTING WORKS
- All paints shall be suitable for use in humid tropical coastal environment, and shall be to the approval of the
Owner The Contractor shall furnish all necessary information to the paint manufacturer to enable him to supply the most suitable paint complying with the requirements of Owner
- Colors - All colors shall be factory-mixed pigments which are non-fading, non-bleeding and finely ground
Selection of colors shall be approved by the Owner
- The temperature, humidity and environment shall be maintained as per manufacturers recommendation
- All damaged places shall be touched – up before handing over the facility
- Preparation of surfaces shall be thoroughly clean, free or rust, grease, dirt and other substances that would prevent adhesion of coating to be applied
Before selecting the color, the contractor must present a mock-up area that displays all proposed colors and demonstrates the painting procedure layer by layer, rather than just submitting materials This requirement should be clearly outlined in this method statement.
To ensure optimal paint adhesion, it is essential to thoroughly eliminate all dirt, dust, efflorescence, oil, grease, stains, and other contaminants using wire or fiber brushing and approved cleaning methods.
- Mock-Up will be prepared for Painting to prevent any Quality defection during permanent Works for each building as per indicated and approved by Owner
- All Holes shall be properlty filled with Putty material
- The putty layer will be apply for all plaster and concrete emusion paint surfaces
Concrete Surfaces shall be rendered to prepare Putty as per Manufacture Recommend
All dirt, dust efflorescence, Oil and grease, stains or other foreign Obstacles shall be removed before painting and checked visually
All hole shall be properly filled with proper material
All Cracks and Holes shall be treated in accordance to Manufacture Standard
Moisture shall be checked in accordance Specification
Removing all dust, hole and uneveness, knot in timber
Filling of crack nail holes and surface finish
Before painting, it is essential to protect, mask, or temporarily remove hardware accessories, fixtures, and similar items that should not be painted Skilled workmen should handle the removal and reinstallation of these items to ensure proper care and attention to detail.
- Except when otherwise specified, all paint shall be applied in accordance with the paint manufacturer's recommendations
- Brush or roller application is recommended for particular type of painting system so that the same can be implemented in site.
DOOR AND WINDOWS WORKS
- All work shall be installed by skilled workmen specially trained in this type of work
- All work shall be erected plumb and true, as shown on approved shop drawings and in proper alignment and proper relationship to establish lines and grades
- Before delivery, frames and leaves need to be inspected to make sure material verifications per submitted approved sample, correct dimension, good Surface Condition
To ensure windows and their components remain in excellent condition before installation, it is essential to fully protect them prior to delivery Additionally, all materials must be verified against the quantity and batch number specified in the delivery order.
All necessary accessories, such as friction stays, handles, locking devices, and fixings, must accompany the main components upon delivery Materials should be packaged in steel pallets or skids, and upon arrival at the site, a thorough inspection should be conducted to ensure that there are no transportation damages and that the delivered items meet the specified requirements.
+ Any damaged or incorrect materials should be returned to the factory
Effective planning of material delivery is crucial to align with the installation schedule, ensuring that only the necessary quantities are stored on-site to reduce the risk of damage Implementing a Just-in-Time (JIT) inventory management system can significantly minimize unnecessary handling, storage, and potential damage to materials Additionally, proper storage practices on-site are essential for protecting window components from damage.
For optimal storage, choose a location that is protected from weather elements and falling debris, ensuring ease of material handling and distribution Additionally, components should be elevated on timber bases to prevent direct contact with the floor.
To ensure the safety and integrity of glass panels during storage, they should be placed on pallets with protective sheets separating each panel to prevent scratches and damage Additionally, it is crucial to keep the glass panels away from water exposure, as this can lead to a “rainbow” effect that compromises their visual quality.
To ensure efficient retrieval and minimize the risk of damage, it is essential to arrange the various components according to their installation sequence This organization reduces unnecessary searching and shifting of materials.
When dealing with large window units and components that cannot be transported via staircases, it is essential to hoist them using suitable equipment, such as pallets, to each floor before distributing them for installation If window frames must be lifted without a pallet, they should only be handled at their designated strong points to ensure safety and integrity.
Proper dimensional control and accurate setting out of wall openings are essential for high-quality window installation Compared to cast in-situ reinforced concrete walls and brick walls, precast facades offer enhanced dimensional accuracy and require less preparatory work, making them a more efficient choice for window installations.
Avoid using cement grout to fill large gaps, as it can result in cracks that may cause water seepage through the building envelope.
- Reference line (R.L) should be set up at appropriate location to facilitate proper alignment of the wall openings and installation of the window frames
- Close dimensional control on wall opening should be exercised to ensure the gap between the wall and window frame is within the range of 7-25mm wide
All components of the project must adhere to the specified materials, design, and dimensions However, unless explicitly instructed otherwise, the fabricator has the discretion to determine the methods for assembly and installation.
To ensure a proper fit for your aluminium window, begin by verifying the window measurements against the wall opening Carefully measure both the height and length of the window, as well as the dimensions of the wall opening, to confirm compatibility and avoid installation issues.
To install an aluminium window, enlist at least two people to assist in lifting it into position One person should help with the lift while the other ensures the window remains secure and doesn't fall As you raise the window, aim to align it as level as possible with the interior wall.
To ensure your window is properly installed, first check that it is level by placing a spirit level on the window ledge If the window is not flat, avoid lifting the entire frame; instead, use a packer under the spirit level until it is level Once achieved, place the packer under the bottom reveal and snap it off for a secure fit.
Ensure that the window is flush with the interior wall by aligning a set square against the wall Adjust the window by either pushing it outward or having someone outside push it inward until the window and wall are perfectly level.
To securely attach the window frame to the wall, begin by pre-drilling three holes into each side of the reveal at the top, middle, and bottom Utilize a set square to ensure the frame remains flush with the wall, then insert three screws to fasten one side of the reveal Once one side is attached, the window will hold its position without requiring additional support.
+ Measure then weld frame bracket into wall
+ Install door leaf, mortar filling as per standard drawing
QUALITY CONTROL
- The Site Inspection and Test Plan (ITP) for this work summarize various characteristics to be checked
The Site Engineer or Foreman will oversee the compliance of operations at each stage, while the Site QA/QC Engineer or Inspector will perform quality control checks and document the inspection outcomes.
ENVIRONMENT, HEALTH AND SAFETY (EHS)
RESPONSIBILITIES AND INSTRUCTIONS
- PM/EHSS Officer shall ensure that all work is undertaken in accordance with the specified work scope
- Safety training should be conducted to all personnel assigned at site prior to commence any work
- All personnel should know the locations of fire extinguishers, communications, manual alarms &
- All personnel should be aware of assembly points, escape routes, emergency contact numbers
- Personal Protective Equipment (PPE) shall be worn at all times
- Good housekeeping shall be observed in work areas
- Construction wastes shall be segregated and disposed to an approved dump yard area
- Adequate lighting equipment when working night time
- Ensure all workers and equipments working overtime are properly accounted and obtained permit/approval from Doosan EHS Manager prior to carry-on works
- Periodic refresher trainings, tool box talk and audit shall be conducted.
SAFETY (PPE)
All workers will be provided with essential Personal Protective Equipment (PPE), including safety shoes, hard hats, working gloves, earplugs, safety goggles, reflective vests, and safety harnesses for those assigned to specific tasks.
- Wearing of the basic PPE will be enforced fully
- All new recruits will undergo proper orientation and safety induction before they could deployed at site for work.
ENVIRONMENTAL
- The work will be carried with full protection to environment
- Working area shall be clean, not slippery and free from any debris.
JOB SAFETY ANALYSIS
JOB SAFETY ENVIRONMENT ANALYSIS (JSEA) PHÂN TÍCH MÔI TRƯỜNG AN TOÀN CÔNG VIỆC
Project: VAN PHONG 1 BOT THERMAL POWER PLANT dự án:
Chi tiết công việc: Đổ bê tông
Work Duration / Thời gian làm việc: From / Từ:
Permit Required: YES NO OTHERS:
Yêu cầu giấy phép: Đúng Không Khác:
Excavation / Đào đất Confined Space / Không gian hạn chế Road Closure / Đường đóng cửa Diving Work / Công việc lặn
Làm việc ban đêm/Làm việc trong kỳ nghỉ
Electrical Work / LOTO Công việc điện / LOTO
Grating Removal Work Công việc loại bỏ lưới
Radiography Works Công việc chụp ảnh phóng xạ Hot Work / Công việc nóng Crane Operating / Vận hành cẩu Work Over Water / Làm việc trên nước Others / Khác:
PPE Required: Head Ear Eye Pulmonary Face Foot Leg Whole Body Others:
Yêu cầu PPE: Cái đầu Tai Con măt Phổi Mặt Chân Chân Cả người khác
NAME POSITION COMPANY SIGNATURE DATE
(Subcon Manager) (Subcon EHS) (Subcon Supervisor) (DHI Construction) (DHI EHS)
There is only JSEA in this document, there is no risk assessment, how come the JSEA is prepared
The Doosan risk assessment procedure mandates the preparation of a comprehensive risk assessment that encompasses all tasks outlined in the method statement, following the sequence of construction work Additionally, a Job Safety Analysis (JSA) is required solely for residual risks rated higher than 6.
It seem no Doosan HSSE team's review on this document
JOB SAFETY ENVIRONMENT ANALYSIS (JSEA) ATTENDANCE LIST PHÂN TÍCH MÔI TRƯỜNG AN TOÀN CÔNG VIỆC (JSEA) DANH SÁCH THAM DỰ
NAME / TÊN COMPANY / CÔNG TY SIGNATURE / CHỮ KÝ DATE / NGÀY
JOB STEP / BƯỚC CÔNG VIỆC
CONTROL MEASURES CÁC BIỆN PHÁP KIỂM SOÁT
Put into place concrete processing
- Concrete trucks run into workers when moving or backing up
- Workers get involved in collisions without working safety equipment, such as safety helmets
- Machinery and equipment bump into workers due to no access restriction measures
- When backing vehicles carrying fresh concrete, it is necessary to arrange supervisors and restrict workers to approach equipment
- Workers must use labor protection equipment when working
- Install fences to restrict access to construction areas
- The lever of the excavator truck falls down while pumping concrete
- Need a concrete pump truck falling while checking hydraulic unit
- When a concrete pump truck enters the construction site, it is necessary to check the pump rod and documents relate to equipment
- Take safety measures to avoid the need to fall down while repairing the hydraulic unit of a concrete pump truck
Falldown - Workers fell while under construction on trucks carrying concrete without safety belts
- Safety hardness must be used when working above concrete trucks
Electric shock - Electric shock while mounted concrete pump trucks due to hit high-voltage power lines
- When installing concrete pump truck, it is required to install high-voltage transmission line isolation grid, arrange supervisors and keep a safe distance from electric line
Impact, Clamp - Touch the motor of the concrete finishing machine - Install the cover for the motor of the finishing machine
- Worker falls because there is no safety barricades at the edge of floor, gap around concrete pumping area
- Install safety barricades around the edge of floor and cover holes
Concrete splashes - An accident occurred due to the expansion of the connection between a hose and a concrete pipe - Make sure to connecting hose and concrete pipes Safety staff
Electric shock - Electric shock due to failure of anti-leakage device in vibrator - Earthing-fix and anti-leakage device to the vibrator Safety staff
Others - Workers with skin disease do not use boots, gloves and helmets
- Provide enough labor protection equipment such as boots, gloves and helmets etc…
- The worker falls because not install the safety barricades at the edge of the floor, covers the holes around the concrete maintanance place
- Install safety barricades on the edge of floor, cover the holes where concrete maitanance
- Worker was electric shock due to the lack of grounding wire, electric leakage protection device at the fan
- Electrical equipment, such as fans, must be grounded and protected to avoid electrical leakage
- Worker suffocates when entering concrete maintenance place without labor protection equipment such as oxygen mask
- Asphyxiation caused by toxic gases when using ladders
- Equip oxygen mask when entering concrete curing place
- Measure CO2 concentration and gas concentration before entering concrete maitanance place
4 Prepare the workforce for the task
- HSE Induction and confined space training not completed
- Workers not familiar with the scope of works or workplace hazards
- Inadequate skill specific training for the employees involved in the task
- All personnel must have completed the FADHILI EHS Safety Induction and confined space training prior to commencing work
- JSA to be read & signed by all workers
- Scope of work to be discussed with the employee and the hazards of each task
- Install fences to restrict access to construction areas
- Register of Trainings and Workshop to be kept and maintained by project HSE
Pre-start Checks to be carried out on all equipments and materials prior to start any work
- Defective / Faulty machinery; materials, tools and equipment
- Ensure all required Pre-start checklist are carried out prior to start any work (generator, welding machines,etc.)
- Defects to be documented in the daily log and reported to the supervisor
- Employees to inspect all gear prior to use to ensure integrity
- All guard and safety features are to be operable, Ensure that the guard and handle are secure
- Sudden release or whipping of hoses
- Workers are to check the condition of the equipment for defects prior to use: hose, fuel indicator, and inspection tag
- Ensure airline hose connections are secured with whip check or safety cable whips
- Ensure nobody is near the hose connection and barricade the compressor
- Wear hearing protection (ear plug) to reduce noise level
- Use safety glasses with side shield or safety goggles
- Keep others away from activity
- Ensure workers are wearing respiratory protection, dust mask
- Ensure after work, all hoses are rolled or kept properly
- Wear a respirator and other PPE as recommended on the MSDS