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FOR APPROVAL B 20.Jun.2019 A 24.May.2019 Rev Date Owner L.K.Quang L.K.Quang Prepared S.I.Yoon S.I.Yoon Checked K.J.Lim K.J.Lim Approved FOR APPROVAL FOR APPROVAL Details of Revision Owner’s Engineer Contractor DOOSAN HEAVY INDUSTRIES VIETNAM Sub-Supplier LILAMA CORPORATION Project NGHI SON BOT THERMAL POWER PLANT PROJECT (2 x 600MW) Title METHOD STATEMENT FOR STORAGE TANK INSTALLATION Document No Rev NS2-DH09-P0ZEN-740005 B Page-No 49 Method Statement for Storage Tank Installation NS2-DH09-P0ZEN-740005 CONTENTS PURPOSE SCOPE 3 GENERAL ORGANIZATION REFERENCES CODES AND STANDARD PREPARATION WORK 6.1 6.2 6.3 6.4 6.5 6.6 6.7 MATERIAL STORAGE CONSTRUCTION AREA MANPOWER HEAVY EQUIPMENT AND CONSTRUCTION EQUIPMENT FOUNDATION CHECK TOLERANCE / ALLOWANCE RIGGING EQUIPMENT AND ACCESSORIES INSTALLATION 10 7.1 FLOW CHART 10 7.2 ANNULAR PLATE 10 7.3 BOTTOM PLATE 11 7.4 SHELL PLATE 15 7.5 SHELL STIFFENERS AND TOP GIRDER 21 7.5.1 Shell Stiffeners 21 7.5.2 Top Girder 21 7.6 ROOF INSTALLATION 22 7.7 APPURTENANCES 26 7.8 TANK TESTING (WATER FILLING TEST) 26 7.9 TANK PAINTING & LINING 267 7.8 NDE 267 ENVIRONMENT, HEALTH AND SAFETY 277 8.1 8.2 8.3 8.4 8.5 8.6 8.7 8.8 8.9 8.10 8.11 SAFETY REGULATIONS FOR EXECUTION VEHICLES: 277 FOR PARTICIPANTS: 27 ELECTRICAL SAFETY: 28 CONFINE SPACE WORK: 28 SAFETY FOR WORKING AT THE HIGH LOCATIONS: 29 FIRE SAFETY: 29 SAFE USE OF LIFTING EQUIPMENT IN ASSEMBLY: 30 TRANSPORTING MATERIALS AND EQUIPMENT: 31 SAFETY PRECAUTIONS FOR WELDING AND CUTTING METALS: 32 SAFETY PRECAUTIONS ON USING EXECUTION EQUIPMENT AND TOOLS: 34 INDUSTRIAL HYGIENE, ENVIRONMENTAL PROTECTION: 35 RISK ASSESSMENT AND JSA (JOB SAFETY ANALYSIS) 36 9.1 9.2 Rev.B RISK ASSESSMENT 36 JSA (JOB SAFETY ANALYSIS) 45 1/49 Method Statement for Storage Tank Installation NS2-DH09-P0ZEN-740005 RECORD OF REVISION Rev Date A 24.05.2019 B 20.Jun.2019 Rev.B Page Affected Description of Revision First Issue 2/49 Method Statement for Storage Tank Installation NS2-DH09-P0ZEN-740005 PURPOSE The purpose of this method statement is to have a procedural activity for all Tank Fabrication & Erection for Nghi Son BOT Thermal Power Plant with Safety, Quanlity and consistently SCOPE This method is made for following storage Tank installation guidance : Potable water storage tank Demi water storage tanks Plant & Fire Water Storage Tanks Condensate water storage tanks Light oil storage tanks Flue oil tanks Absorber towers for FGD system Makeup water tank for FGD system Limestone storge tanks for FGD system Mill slurry tanks for FGD system Emergency storge tank for FGD system Gypsum slurry storage tank for FGD system Filtrate tank for FGD system Watse water blowdown tank for FGD system Waste water treatment tanks for FGD system GENERAL - Select a proper erection sequence as per the latest revision of the erection drawing - Check the site conditions for access & storage of materials - Mark-up the storage area & crane position - Arrange the temporary supports, Jigs, guys, braces, clips and etc - Shift & store the erection materials at the marked places - Arrange for the scaffolding materials in advance ; if the same is required during the progression activities - Ensure the availability of proper lifting tackles, drift pins, wedges and torque wrenches for tensioning Rev.B 3/49 Method Statement for Storage Tank Installation NS2-DH09-P0ZEN-740005 This method statement is applied to the above mentioned works If there are any matters not mentioned in this procedure, then that will be carried out according to relative drawings and standards Project: Nghi Son BOT Thermal Power Plant uses technology of coal firing with capacity 2x600 MW Country: Socialist Republic of Viet Nam Plant type: Coal Fired Thermal Power Plant Capacity: 2x600 MW Scope: Full EPC Fuel: Imported Coal Site: Thanh Hoa Province Owner: NS2PC Main Contractor: Doosan Heavy Industries VietNam Subcontractor: LILAMA Corporation ORGANIZATION Organization Chart Of Lilama Corporation B Rev.B 4/49 Method Statement for Storage Tank Installation NS2-DH09-P0ZEN-740005 REFERENCES CODES AND STANDARD Project Specification requirement; For Construction Drawings Approved Contract Quality Plan Project EHSS Management Plan Painting Procedure (NS2-YR01-P0ZEN-070001) American Society for Testing and Materials (ASTM) American Welding Society (AWS) Welding Procedure Specification (WPS) American national standards institute for (ANSI) Deutsches Institut fur Normung (DIN) API 650 Standard ITP for Tank Fabrication and Erection PREPARATION WORK 6.1 Material Storage ‐ The shell plates shall be bevelled and grinding until fit-up/welding profile which mentioned in the construction drawing After that they shall be bended at the workshop by bending machine upto tank shell radius of curvature ‐ Make sure the conditions such as the access road for heavy equipment (crane, truck, and trailer), the storage capacity, ground condition, and other materials may affect to the tank material, etc Rev.B 5/49 B Method Statement for Storage Tank Installation NS2-DH09-P0ZEN-740005 B Facilities Plan for Storage Tank Installation 6.2 Construction Area Make the conditions before working such as the access road in and beside the ‐ tank area, the land for laying down material, wet or dry land, etc 6.3 Manpower Base on the progress and manpower for erection work of tank will arrange as follow: Pos Position and carrier Quantity I Site Officer Package leader Deputy package leader Safety officer Manager QA/QC Installation supervisor Welding supervisor Quality supervisor Staffs Documentation management 10 First Aid 11 Guardian Rev.B Remark 6/49 Method Statement for Storage Tank Installation NS2-DH09-P0ZEN-740005 12 Material manager 13 Material procurer 14 Safety man 15 Surveyor 16 Storekeeper 17 Welding storekeeper 18 Crane driver 19 Truck driver II Site management board Welding team leader Erection team leader Pipe team leader Painting team leader Operation men for Semi- Automatic welding machine Electrical Welders 24 Erection men 30 10 Painters 11 Service cranes 12 Oxy gas welders 13 Scaffolding men 12 14 Electrical men Total 115 6.4 Heavy Equipment and Construction Equipment Equipment and instrument table for installation work Pos I Rev.B Description Vehicle and instrument Crane 50 ton Truck crane 10 ton Welding machine with soldering rods Welding machine 01 rod TIG welding machine Compressor 270 CFM Vacuum machine High pressure pump Pump 8" inch Unit Q’ty Pc Pc Pcs Pcs Pc Pc Pc Pc Pc 1 2 1 1 Remark 7/49 Method Statement for Storage Tank Installation 10 11 12 13 14 15 16 17 18 19 20 21 II 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Rev.B Cutting machine Gas flow device Heating device Dry oven for Welding rod (200 kg) Welding box ( baking oven) Water - level Theodolite Pulley ton Pulley ton Pulley ton Grinding machine ɸ180mm Grinding machine ɸ 100mm Instruments Hammer 10 kg Hammer kg Hammer 0,5 kg Steel Cable ɸ 18mm ,length 3m Steel cable ɸ 10mm Cable lock ɸ 10mm Pulley hoist Ton Pulley hoist Ton Pulley hoist Ton Plate Clamp Ton Plate clamp Ton Roller tape 30 m +70 m +5 m Welding wire 1x50 TIG welding wire (50 m/set) TIG Soldering iron Electric soldering iron Earth grip Gas soldering iron Couple welding hose Plump Straighten Tape 0,5 m Angle tape Stiffeners Scaffolding NS2-DH09-P0ZEN-740005 Set Set Set Pc Pcs Pc pc Pcs Pcs Pcs Pcs pcs 1 30 1 4 30 Pcs Pcs Pcs Pcs m Pcs Pcs Pcs Pcs Pcs Pcs Pcs 10 15 10 100 16 4 4 10 400 2 20 20 500 1 m Set Pcs Pcs Pcs Pcs m Pcs Pcs Pcs lot lot 8/49 Method Statement for Storage Tank Installation NS2-DH09-P0ZEN-740005 6.5 Construction schedule B 6.6 Foundation Check ‐ The Foundation had been done before start installed the tanks ‐ Cross checks the foundation, anchor bolt, lay-out and bolt holes ‐ Bolt Holes Shell be straddle the nominated north south Tank centerline and The Horizontal Tank Centerline ‐ Clean the foundation bolts with wire brush Any scraps, concrete blocks or other obstacles shall not be on the surface of foundation ‐ Check the bench marks 6.7 Tolerance / Allowance Tolerance / deviations shall be within the cumulative effects of erection tolerances as set in the API-650 Codes & Standards or as shown on the drawings 6.8 Rigging Equipment and Accessories ‐ Safe operation of rigging equipment to lift a given load is not the only factor the equipment operator must consider ‐ All such equipment shall be inspected prior to its use on each shift, and as necessary during its use, to ensure that it is safe Remove from service immediately any rigging equipment found to be detective Rev.B 9/49 Method Statement for Storage Tank Installation NS2-DH09-P0ZEN-740005 o Hand tools such as spanner, wrench, chisel must be grasped firmly in control range o Daily checking must be conducted before putting into use relating to following damages: o Whether handle is not cracked or not o Whether cutting edge is damaged or not o Adjusted details o Hammer handle must be packed firmly with medium length for easy use o Bore bit, turbidity is smooth without burrs o Shipping tools in containers and storage bags provided o Tools used for working on high places must have been tied to avoid falling down 8.11 Industrial hygiene, environmental protection: ‐ On every day, after the work is finished, it is necessary to cleaning up the execution premises, waste, scraps, and collect it in safe places ‐ All waste must be collected - transported - properly handled in accordance with owner’s regulations Rev.B 35/49 Method Statement for Storage Tank Installation NS2-DH09-P0ZEN-740005 Risk Assessment and JSA (Job Safety Analysis) 9.1 Risk Assessment Rev.B 36/49 Method Statement for Storage Tank Installation NS2-DH09-P0ZEN-740005 RISK ASSESSEMENT People at Risk Job / Task worker abnomal physical condition ( Drunken & fatigue) Worker not familiar with the scope of works or workplace hazards Workers Transportat ion of equipemnt & delivery of materials Traffic accident Cause of Adverse Effect Slip/ Trip/Fal l Collisio n BASE RISK (WITHOUT CONTROL) RESIDUAL RISK (WITH CONTROL) L2 S2 Resi dual Rate (RR N) Check the health condition during the TBM 1 TBM to be filled and discussed by supervisor to workers 1 checking the access roand before passing the area Designate a signaman when moving the equipment 2 3 3 L S1 Risk Rate (RF N) 2 Mitigating Controls keep the speed limmited 10km/h Defective/Faul ty machinery or tools Ensure all required pre-start checklist are carried out prior to start any work Only a qualified and Certified operators Signalman, riggers should be in-place Falling object Complied with Vietname Molisa regulations with Circular 44 Preparation of a lifting plan list and plans for lifts from 10 tons or greater Heavy Lifting Works Falling object Material fall 4 16 Do not stand under the load and working radious of crane Isolated lifting area and warning no access Ensure loads are fixed with Wire sling correctly All lifting equipment must be in good conditions Experienced lifting supervisors at all times Rev.B 37/49 Method Statement for Storage Tank Installation Collapse Caught in Job / Task Scafolding work Squeeze d by the sling 10 15 Only lifting tools with color coding following site regulation allowed to use All lifting tools must have identification tag (including serial number, certification number, SWL inspection date and due date) Check the Windspeed beforre Lifting Windspeed 10m/s Check the ground condition and level including any type of matting Ensure that no one touch the load and wire sling before give the signal for lifting 6 2 Use proper hands PPE Ensure distance between steel structure and crane in lifting plan study and communication between signal man and crane operator Put taglines with enough length to the load from the ground during lifting for proper guide control Ensure that no one stay within the restricted area from the load before lifting Barricade the loading / unloading area and crane working radius Designate only one Signalman for Lifting and / or additional signal man for every location ( if nessessary) collision Equipm ent collapse 15 Caught in Squeeze d by the material s 12 People at Risk Cause of Adverse Effect S1 Risk Rate (RF N) Mitigating Controls L1 S1 Resi dual Rate (RR N) All scaffolders must be trained and tested with scaffolding course in training centre of DVN’s Training and trained person entering working at height only All scaffolders must be had scaffolding certificate from the third party And qualified by DVN EHS scaffold supervisor All scaffolders who is working at height shall be inducted and got certificate from MOLISA ( Circular 44) 2 falling hazard, falling from height Rev.B Equipm ent collapse NS2-DH09-P0ZEN-740005 Lack of experien ce and knowled ge/ not adequat e PPE L 38/49 Method Statement for Storage Tank Installation NS2-DH09-P0ZEN-740005 All workers must be equipped with Safety helmet & strap chin, safety google, fall arrestor device, clothing uniform with yellow helmet and sticker " Scaffolder" All employees shall follow manual handling methods Ensure all are wearing necessary PPEs Ensure the dismantling is done only by the following the dismantling procedure Dismantling of scaffolding is not allowed during head wind permanent injury for worker Noncomplia nce of DVN’ EHS Procedu res and permit to work Adequate supervision shall be available at site during dismantling Ensure a valid P.T.W “prior to the commencement of the any work at site and Permit to be made available at the work site during all the activities” Confined space entry permit shall be obtained from area authority prior to start confined space works Gas testing to be performed prior." if scaffolding installation inside confined space" 4 16 ( Scaffolding PTW applied from 10m and over and it was approved by DVN’s EHS) 2 2 2 Job specific T.R.A to be made available at the site & control measures to be communicated to all personnel involved in the job through Tool Box Talk Meeting Job specific Tool Box Talk to be filled up prior to the commencement of work and to be kept in the site Rev.B permanent injury for worker Fall of material /Trips & fall, stuck by personal Injury to persons Major injury Sharp edged Avoid gaps in between planks 12 Ensure that overhang is not more than 50 mm at the edges Provide toe boards to avoid fall of materials and guard rails to prevent the fall of persons Ensure all hand tools are inspected and approved 39/49 Method Statement for Storage Tank Installation tools Cut injury/ Pinch Point/D efected hand tools/De fected / Homem ade / modifie d hand tools Injury/i mproper ty erected scaffoldi ng, partial/c ollapse scaffoldi ng, damage material s or structure , unqualif ied personal injuried or death, unautho rized alteratio n of scaffoldi ng People at Risk Job / Task Welding work Electric shock Cause of Adverse Effect Damage d/ Defectiv e Equipm ent NS2-DH09-P0ZEN-740005 Ensure trained and experienced employees are assigned to the job Ensure all hand tools are checked for their good working condition prior to the start of the job by operators or users Ensure no defected/ handmade/modified tools are available at site All portable handtool shall be tie by layard for falling protection Scaffolding inspector shall visually inspect the scaffolding is erected as per procedure by qualified personnel's supervision Ensure the materials used for the construction are graded During inspecting the higher level platforms Inspector shall maintain 100% tie-off 15 All scaffolding shall be inspected after inclement weather or after seven days or 3 L1 S1 Resi dual Rate (RR N) 4 if work has been carried out temporary on the structure by a certified scaffolding inspector whose findings shall be recorded on the scaff tag and in a register kept by him No person other than a scaffolder and/or his helper may be on a scaffold which is L S1 Risk Rate (RF N) 16 Mitigating Controls Workers are to check the condition of all equipment for defects prior to use: cables & connections, earth clamps, inspection tag and electrode holder Proper earthing and connection of welding machines and generators Proper PPE to be worn at all times Rev.B 40/49 Method Statement for Storage Tank Installation Fire/ explosion Cutting and Welding works Damage d/ Defectiv e Equipm ent Electric shock NS2-DH09-P0ZEN-740005 12 4 16 Fashback arrestor and gauge should be installed prior to use cutting by Gas cylinders Always wear appropriate PPE (welding mask, welding gloves, welding jacket, Arpon) Workers are to check the condition of all equipment for defects prior to use Check all electric tools prior to use by competent person and color tagged Check panels and earthing lines 2 4 6 4 No working on wet surface Flying object Damage d/ Defectiv e Equipm ent 15 All guards & safety features are to be operable Ensure that right disc are used for a certain job, cutting disc for cutting and grinding disc for grinding Ensure that the RPM of disc is higher than the RPM of the grinder Do not use damaged or wet disc Using proper PPE as face mask protection Ensure that installation of proper working platform such as scaffolding with highest standard Fall Work at height without proper working platform 4 16 4 16 Work at height or ladder Falling object Imprope r storage material / tools The lifeline shall be a minimum of 12 millimeter (½ - inch) wire rope Or it shall have a design capacity of 22 kilo-Newton Safety nets shall be provided when workplaces are more than 7.5 meter above the ground Safety harness must be worn before work and lanyard must be connected with proper anchor point 5-minute safety training before work Put the material in secure container Tie the tools to your safety belts or harness with rope having enough length to reach the working point connection Prevent unauthorized entry the area can be had falling object by securing area with barricade and signage Installation of safety net for Rev.B 41/49 Method Statement for Storage Tank Installation NS2-DH09-P0ZEN-740005 prevent falling object if needed Ensure that wearing the proper PPE People at Risk Job / Task Confine space entry work suffocation,Pre sence of residual harmful fume, dust, smoke Rev.B Cause of Adverse Effect Failure to properly ventilate L S1 Risk Rate (RF N) Mitigating Controls L1 S1 Resi dual Rate (RR N) 15 Provide the adequate ventilation: Use mechanical air movers (in/out) for ventilation Check the oxygen level prior to entry on confined space Ventilation and extraction should be performed at least (30) minute before the entrants are allowed to go inside the CS Ensure atmosphere is safe by having oxygen concentration between 19.5% & 23.5% and should be monitored and maintained Workers should undergo a mandatory Confined Space training before allowing to enter the CS Gas free test tobe conducted by a competent person before and during the work confirm the level of toxic substances does not exceed the permissible exposure limit The confined space shall be monitor continuously using at least no of in Gas monitor Ensure the in gas meter is having a valid calibration cert ( All workers shall be brief everyday about hazards of confined spaces and its control measures before commencing of work- all works shall be stopped and all workers shall evacuate immediately from the gas monitor and inform the person in charge people team or people 1team work and have to sign on the paper when out the entrance and exit times (You should check the time when you wear an oxygen mask, work the work up to the given time, and end the shift and work.) 2 42/49 Method Statement for Storage Tank Installation NS2-DH09-P0ZEN-740005 Following procedures and actions are to be followed in a case a victim is to be rescued from an enclosed space: Emergency People at Risk Cause of Adverse Effect falling hazard, falling from height May be falling objects , workers may falling from hole opening cause fatal injury, Job / Task Gratting installation Failure to comunic ation device or walkies talkies Rev.B L 16 S1 Risk Rate (RF N) Raise the alarm and inform Master Obtain necessary assistance and equipment including medical support Lifelines, breathing apparatus, resuscitation equipment and other items of rescue equipment are ready for use First aid squad fully equipped near to the scene Communication link established Use approved VHF/UHF radios The officer in charge of the rescue must remain outside the space, where he can exercise the most effective control Before entry, officer in charge must inform in briefly the squads about the peculiarities of the relevant space (if possible consult relevant plan) During rescue operation adequate ventilation shall be provided continuously Any case in emergency contact to DVN’EHS Department and LILMA HSSE Department with Telephone number: 023.7386.2595 Mitigating Controls 4 L1 S1 Resi dual Rate (RR N) 4 All workers must be training and have to take part in TBM and compliance with PTW ( grating and handrail removal permit) 4 16 A piece of grating or handrail will never be removed or left without:Pre – Installing a hard barricade, guardrail, or equivalent, which will entirely encompass the opening or:Properly covering the opening 43/49 Method Statement for Storage Tank Installation serious injury Frequency 1: unlikely/improbable 2:Remote 3:Quite possible/Occasional 4:Likely/Probable 5:Very likely/Frequent Severity 1.Negligible 2.Slight 3.Moderate 4.Critical/High 5.Catastrophic/Very high NS2-DH09-P0ZEN-740005 If a floor hole cover ( s) it used, it must be constructed to adequately support without failure, at least twice the weight of any person ( s) and Or equipment to which the cover may be subjected Be cleated or secured by means of wire tie downs, clips, or other equivalent fastening method -visibly identify the hazard on the cover ( DANGER – HOLE COVER- DO NOT REMOVE) - All signal boards, tags, hard barricade must be available * Prepare Job Safety Analysis and Safety Checklist when RRN is ≥6 ** Prepare Safety Verification Checklist when RFN is ≥6 L1 : Likelihood as is L2 : Likelihood with mitigating controls in place S1 : Severity as i S2 : Severity with mitigating controls in place Risk Factor Number ( RFN) 1-2 Trivial/Acceptable 3.5: Tolerable 6.-9: Moderate/Acceptable with review 10-15 Substantial Prepared by Mr Le Thanh Hai Position: LLM HSSE Manager Signature: Date: 10th April,2019 Rev.B Residual Risk number ( RRN) 1-2 Trivial/Acceptable 3-5 Tolerable 6-9: Moderate/Acceptable with review 10-15: Substatial 16-25:Intolerable/Unacceptable Approved by: Position Signature Date: 44/49 Nghi Son BOT Thermal Power Plant NS2-DH09-P0ZEN-740005 9.2 JSA (Job Safety Analysis) JOB SAFETY ANALYSIS NGHI SON BOT THERMAL POWER PLANT PROJECT ( Depveloping a habit of analyzing method to identify hazards & unsafe practices than developing solusions that control, minimize or elmininating hazards) Task: Prepared by Mr Le Thanh Hai Original date: Reviewed by Mr Revised by: Approved by Mr Revised date: PPE required (Tick as applicable – state > category/specific type) Safety Gloves: Face shield Barricade googles: needed Safety Long sleeves Hearing MSDS harness protection need/Review Revision: A Lock out: Tack out: Group fault interrupter Dust Mask: Others Other safety equipment required: Remark: LIST OF ALL JOB STEPS Transportation of Equipment Delivery of Materials & Heavy lifting work - loading and unloading LIST OF ALL KNOWN HAZARDS Crash/Traffic accident Falling marials and equipment from trailer or truck HOW TO ELIMINATE HAZARDS All Truck and trailer operators must be got EHS conduction from DNV EHS training center and had certificate following Vietnam Molisa regulations Check The access road before passing area 3.Designate a signalman when moving equipment Lashings (such as webbing, chains, cables or clamps) should be in serviceable condition and be checked for damage at regular intervals to ensure their tension has not been lost Use sleeves and/or corner protectors to prevent damage to both the load and the lashing or sheet if it passes over a sharp edge or corner Ropes and buckle straps suspended from a roof rail and/or the curtains of a standard curtain-sided vehicle are generally not suitable for securing a load Potential fatality and serious injury due to lifting work Fataliy/Serious injury to workers 1.Regular inspection and maintenace shall be carried out and a register kept by a qualitied person, for the lifting tackle under DVN EHS control This equipement checking for deformation, cracks or any faults includes: Wire slings, Hooks, Shackles, swivels, spreader bars, Shear –Legs or similar equipment Ground bearing to be tested and endorsed by competent person.( Crane operators and lifting supervisors ensure safe condition positioning of crane) 2.Steel plates to be laid for the positioning of crane, if necessary 3.Lifting supervisor to maintain visibility and supervision during lifing work 3.Adhere to approved lifting plan Ensure a valid permit to work 5.All necessary check list to be update 6.Wire slings must be properly srored off the ground without casing kinking 7.Wire slings must be cleaned and inspected before and after using 8The issuing and control of slings shall be performed by a qualifỉed person Soft/unevent ground may cause crane topple Potential fatality to workers property damage Over loading of crane’s SWL may cause crane toppled Damaged sling –unsecured loose materials High potential fâtl incident and damage to property Rev.B 45/49 Method Statement for Storage Tank Installation Rigging improper method,high potential fatality due to falling object Gratting installation and removal 1.High potential falling object due to fall or material drop down 2.Pinch point, serious ịnury hand Equipment and material preparation for temporary facilities Rev.B 1.Collision between machine, overturing may cause death or permanent injury, collased NS2-DH09-P0ZEN-740005 9.Wire slings and web slings shall be uniquely mumbered and a registerkept of all 10.Besides the regular inspection following their use, Wire slings and websling must be inspected on monthly basicand the finding entered on the record sheet Worn slings must be cut into two and properly disposed of: Not allow: Using a wire sling over sharp corner without padding 2.Force the sling into position 3.Overload the slings 4.Use a damaged slings, or one that is worn 5.Drag a sling from under the load 6.Allow loads to pass over a slog laying on the ground ( Tagline to be used at all time during lifting works) Adhere to the approved lifting plan) 7.Lifting supervisor to ensure the proper centre of gravity (Lifting supervisor brief the method statement in TBM) Suspend the load 300mm above ground and confirm stability 1.Ensure a valid permit to work is in placed before work commecement 2.lifting planin placed before lifting 3.Only appreciated and compentent rigger to carry out rigging 4.inspect lifting gear prior to use 5.Any person employed on site as a rigger shall be trained and experienced in this capacity 2riggers working on scaffoldingand /or steel structure must not wear soft shoes unless they approved steel capped toe safety type Protective gloves must be worn when hadling wire ropes All workers must be trained by DVN EHS and comply with safety regulations with working at height 1.1 comply with P.T.W ( Grating and handrail removal permit) 1.2 Before removal grating on the floor of Boiler must be identified gratting’s location exactly and install hardbarricade for isolated and prevent worker access.install warning signalboard “ Warning oppening hole – keep away” 1.3.Workers in this task have to using the hooks for falling protection - hanging gratting during the time remove or installation 1.4 All portable handtool machine or tools as scratch spanner, or portable drilling machine must be secure with layards for falling protection Ergonomic and manual handling must be trained and TBM before working in this task 1.Alway keep the site clear of any obstruction 1.2.Toolbox talks on daily basic 46/49 Method Statement for Storage Tank Installation NS2-DH09-P0ZEN-740005 2.Uneccessary movements of equipments a person that causes injury 3.Equipment oil leak drung operation Working and operation during night time 1.working operation of the equipments may cause serious injury to personnel due to: 2.Generator leakage) (Diesel equiment oil 3.Chemical storage Welding and cutting work Rev.B Electrical shock, fire, burn to body and injury to eye may cause death or permanent injury Fire accident due to electrical wire aging during welding 1.3Adequate warnign signalboard 1.4 Checklist on all vehiclé must be provide every day 1.5 Siren for warning before lifting 2.Designate a signalman who wear the hi –vest suite to control the work 2.1 Heavy machinery should have backward movement warning light beacon 2.2 Equipment used to clear the site should be controlled and sorted by bankman 2.3 Provide safe entrance and exit way for the workers going to the area 2.4 All vehicles entering on the site must turn on their headlights day and nighttime Daily check of the equiment prior to work 1.Must provide sufficient lighning on the entire working area 1.2 All equipments must be ensure all lights are operation 1.3Supervisor must always be present for entire working 1.4 All workers must be wearing proper PPE ( Hi –Vest) 1.5First aid box should be prepared for the first aid in case injury 1.6.Temporary electrical system must be used and connect 03 core and separated distribution panel ( with ELCB with electrical leakage 30ma) and avoid from any water effect 1.7 provide safe accessway and exit access road for the workforces passing 1.8All kinds of electrical cable must be hanged over ground at least 2m and must be industrial socket and flugs 2.Daily check of the equipment prior to start work 2.1.Regular inspection and monitering of the equipment prior to use 2.2 Provide secondery containment protection under the equipement to prevent contamination soil by oil spillage 3.Diezel chemical shell be stored in secondary containment and MSDS must be showed and communicated to all workers who concerned All hazardous waste must be collected and keep inside the hazardous waste disposal bin and handover to DVN EHS to treatment by the Nghison Environment company following Vietnam evironment regualtions All workers must be trained with special hot work training from DVN EHS training center and also equiped with PPE as: Safety mask for face protection and face mask for welding or cutting, leather gloves,Arpon Proper earthing and connection of welding machines and generators 2.Flash bask arrestor and Gas flow regulator should be installed to Gas cylinder and cutting gears or cutting torch prior to using cutting 47/49 Method Statement for Storage Tank Installation NS2-DH09-P0ZEN-740005 Working on scaffolding Potential incident and fatality and serious injury due to falling from height Confined space entry work Death due concentrasion Or toxic gas Rev.B to reduced oxygen 2.1.Must be used fire blanket to isolated welding area and used ask tray for prevent welding slags drop 2.2.fire watchman should be available at welding area 2.3 Portable fire firetinghting extinguisher must be availabled at workplace 2.3 All flamable and combustion materials should be moved way from welding or gas cutting area at least from 5m to 10m depend on actual location at workplace and ensure method for isolated with fire hazards 1.Make sure all workers who working at height must be trained safety induction by DVN EHS training and also must be got safety certificated for Cir: 44 following MOLISA and DOLISA Vietnam regulations 1.2 Must be sured all workers must be weared safety harness and used 100% tie off all the time when they are working at hieght 1.3 Scaffoldimg system must be install and dismantling by competent persons and all scaffolders must be got qualified and trained by DVN EHS department 1.4 Scaffolding have to reach up with DVN EHS standards ( Supervisors and EHS supervisors must be inducted and training to all workers who is working at height) 1.5 All scaffolding system must be inspected by scaffolding supervisor and inspector and apply with scaffolding tags ( Green – Yellow – Red) All workers must be followed and comply with Safety rules and principles as: Climb on the ladder must be complied with three points principle 2.1.Do not face away from the ladder while carrying out work from the ladder 2.2 Do not stand close than 900mm to the top of ladder 3.Lifeline must be designed allowable carrying load capacity 3.2 Using fall arrestor device( Rope grap) using for vertial lifeline applicated on ladders (Nilon rope diameter with 16) 3.3 Lifeline system must be done before working Horizontal lifeline must be used wire rope Min 10 Max 12 Ladders must be inspected frequently before working and those which have developed defects must be withdraw from service for repair or destruction and tagged marked as ( Dangerous not use) 4.2 Damaged ladders or missing rungs, brokend with side rails or other faulty equipment mustbe not used Imprrovised repair are not allowed 1.All workers who working inside cofined space must be attend and safety training at DVN EHS training center and must be carry out before working 2.Complied with PTW following DVN 48/49 Method Statement for Storage Tank Installation NS2-DH09-P0ZEN-740005 EHS procedures before entering confined space must be using ventilation air force for gas monitering and using multi-gas device in for checking ( Apply with oxygen form 19.5% to 23.5%) and checking every 02 hours one time ( but no limmited for checking atmosphere inside confined space following DVN EHS requested or instructed on site) Establish for comunication system from inside and outside of confined space Do not working alone and at least working inside confined space 03 persons Establish a tripod and pulley for rescuse in case emergency When workers working inside must be used safety harness for rescuse reasons and ERT menber must be available during the time workers working inside and comply with Emergency procedure of DVN EHS Rescuse in emergency case Fatal or death for worker if not in time Any case in emergency contact to DVN’EHS Department and LILMA HSSE Department with Telephone number: 0974.39.33.99 or DVN EHS 023.7386.2595 Following procedures and actions are to be followed in a case a victim is to be rescued from an enclosed space: Raise the alarm and inform Master Obtain necessary assistance and equipment including medical support Lifelines, breathing apparatus, resuscitation equipment and other items of rescue equipment are ready for use First aid squad fully equipped near to the scene Communication link established Use approved VHF/UHF radios The officer in charge of the rescue must remain outside the space, where he can exercise the most effective control Before entry, officer in charge must inform in briefly the squads about the peculiarities of the relevant space (if possible consult relevant plan) During rescue operation adequate ventilation shall be provided continuously Rev.B 49/49 ... made for following storage Tank installation guidance : Potable water storage tank Demi water storage tanks Plant & Fire Water Storage Tanks Condensate water storage tanks Light oil storage. .. tanks Flue oil tanks Absorber towers for FGD system Makeup water tank for FGD system Limestone storge tanks for FGD system Mill slurry tanks for FGD system Emergency storge tank for. .. Gypsum slurry storage tank for FGD system Filtrate tank for FGD system Watse water blowdown tank for FGD system Waste water treatment tanks for FGD system GENERAL - Select a proper erection