The purpose of this Method Statement is to describe the methodology involved in excavation and initial filling work at the approved area for site access in accordance with the technical standard and EHS requirements of Van Phong 1 BOT Thermal Power Plant Project
Comment Response Sheet (CRS) Project Title Van Phong BOT Thermal Power Plant Project Document Title METHOD STATEMENTS FOR SITE LEVELING WORK Document No Document Type For Approval Returned Status AC Prepared by CRS Issued Date 07/01/2020 Engineer YH Lee VP1-1-L4-C-GEN-10004 CRS No No VP1-1-L4-C-GEN-10004-D-CRS Section/ Page Cover Owner’s Comment Response to Comment 07/01/2020 19/03/2020 Update new comments: (1) Whole picture for requirement compaction of system at site to be shown in this stage; (2) Site excavation and leveling work for ash pond Status O/C * Remarks 25 March 2020: (1) Doosan added main drainage system and follow VPCL requested (1) Noted 07/01/2020 O (2) It is kindly noted that per Contract PIII-2 ExhB1 Tech Spec S8 - Civil & structural - item 8.4.3.6 "Upper m of fills supporting structures / Deeper fills supporting structures / Dikes for ponds and shore protection will get required compaction of K95 Kindly reminded on requirements of project to be submitted considering common facilities requirement for compaction and drainage Review Date (2) Doosan noted and added more infomation for Ash pond work permanent dykes area which will be constructed later See more further comments on page (3) Noted (3) MS for offshore portion will be separated area is poorly documented (3) MS for offshore portion is not clearly indicated 5.1 Site Preparation 07/01/2020 Move figure to the right section 19/03/2020 07/01/2020 Area and tentative volume? 19/03/2020 (P7/31) 5.1.4 (P10/31) Additional Notes (if any) * O - Open, C – Closed This Ms for aqua farm and water pond only 07/01/2020 O Closed Doosan noted and repaired 07/01/2020 Closed O Doosan noted and repaired Page of AP APPROVED Approved AC APPROVED WITH COMMENT Contractor to revise the correction and resubmit NA NOT APPROVED For Approval Revise the correction and resubmit before proceeding RE REVIEWED Information acknowledged with no comment RC REVIEWED WITH COMMENT Information acknowledged with comments Note: Approval or comment does not relieve the Contractor of all obligations covered under contract E 18-Mar-2020 For Approval D 19-Dec-2019 For Approval C 09-Oct-2019 B Discipline: Civil JH 03 Choi Apr 20 Date: KS Kim YH Lee JH Choi KS Kim ET Kim For Approval JH Choi KS Kim ET Kim 12-Sep-2019 For Approval JH Choi ET Kim ET Kim A 14-Aug-2019 For Approval JH Choi ET Kim ET Kim REV DATE DESCRIPTION Approved Checked Prepared OWNER VAN PHONG POWER COMPANY LIMITED PROJECT Van Phong BOT Thermal Power Plant Project Status □Approved □Approved with Comment □Not Approved □Reviewed OWNER’S ENGINEER Pöyry Switzerland Ltd EPC CONTRACTORS IHI–TESSC–CTCI–DHI CONSORTIUM PROJECT DOCUMENT No VP1-1-L4-C-GEN-10004 REV E DOCUMENT TITLE METHOD STATEMENTS FOR SITE LEVELING WORK EPC Doosan Heavy Industries and Construction EPC DOCUMENT No VP1-1-L4-C-GEN-10004 REV E VAN PHONG BOT THERMAL POWER PLANT PROJECT CONTENTS PREFACE SCOPE OF WORK AND SCHEDULE 3 REFERENCE DOCUMENTS RESPONSIBILITIES PROCEDURE AND SEQUENCE 5.1 Site Preparation 5.1.1 Site clearance work 5.1.2 Survey work 5.1.3 Equipment and Manpower mobilization plan 10 5.1.4 Site Plan, Temporary access, dewatering, disposal area 11 5.2 Excavation soil 14 5.3 Transportation of excavated soil 17 5.4 Initial soil filling 18 QUALITY CONTROL 22 ENVIRONMENT, HEALTH AND SAFETY (EHS) 23 7.1 EHS General requirement 23 7.2 Site Situation Response and Emergency Response 28 7.3 Medical Emergency Response Plan 30 7.4 Job Safety & Environment Analysis (JSEA) 31 ATTACHMENT 38 ATTACHMENT 01 38 ATTACHMENT 02 39 ATTACHMENT 03 40 VAN PHONG BOT THERMAL POWER PLANT PROJECT PREFACE The purpose of this Method Statement is to describe the methodology involved in excavation and initial filling work at the approved area for site access in accordance with the technical standard and EHS requirements of Van Phong BOT Thermal Power Plant Project SCOPE OF WORK AND SCHEDULE This method statement covers the works which related to excavated the soil and backfill the soil in compliance with the applicable codes, standards, design, drawing and specification This is also describes details of EHS requirement, equipment, methodology requirements and Site inspection and Test plan –ITP VAN PHONG BOT THERMAL POWER PLANT PROJECT POWER BLOCKS ASH POND VAN PHONG BOT THERMAL POWER PLANT PROJECT REFERENCE DOCUMENTS - Drawing VP1-0-L4-C-GEN-00005_SITE PREPARATION, OVERALL PLAN VP1-0-L4-C-GEN-00006_SITE PREPARATION, PLAN FOR POWER BLOCK VP1-0-L4-C-GEN-00007_SITE PREPARATION, PROFILE FOR POWER BLOCK VP1-0-L4-C-GEN-00010_0_SITE PREPARATION, PROFILE FOR ASH POND VP1-0-L4-C-GEN-00009_0_SITE PREPARATION, PLAN FOR ASH POND VAN PHONG BOT THERMAL POWER PLANT PROJECT VP1-0-L4-C-GEN-00011_0_SITE PREPARATION, SECTION FOR ASH POND - Standards and documents related TCVN 4447:2012TCVN 2683:2012 22TCN 333:06 22TCN 346: 06 - Earth works – Construction, check and acceptance Soils - Sampling, packing, transportation and curing of samples The process of compaction soil, macadam in the laboratory Determine the compaction of foundation, road foundation with sand cone density test RESPONSIBILITIES • It is overall responsibility of Site Manager to organize resources prior to perform construction activities as per project specification in compliance with the quality, schedule & safety requirements • EHS Manager is responsible for the overall safety of the construction site His responsibilities include site inductions ensuring work permits are valid, accident reports, number of person-hours worked and ensuring all works carried out in the safest possible manner consistent with good construction practices EHS Manager will ensure in coordination with Site Engineer that all measure/construction taken shall be maintained till completion of job • It is the responsibility of Construction Manager/Site Engineer that construction activities are executed in accordance with this method statement and project specification • Site Supervisor and Site Safety Officer must unite to prepare the safe workplace condition and provide necessary PPEs, proper tools … for the executer Their duties also included of ensuring the task performed following the approved method and warning any EHS noncompliance case and correct it directly In case of imminent danger, the site supervisor has to stop the work immediately The Safety officer at site is equally responsible from stopping the work in the above case • The QC inspector will ensure that the work is executed according to the requirements of quality are fulfilled VAN PHONG BOT THERMAL POWER PLANT PROJECT PROCEDURE AND SEQUENCE Construction Activities Equipment and tools Tools Preparation work (Confirm existing elevation) Excavation work/ Compaction Excavation area Compaction, surface finish Transportation to Filling, Disposal area area Placing and compaction of filling layer Filling area FDI test, Finish level, surface check Final result Quality Control, EHS Activities VAN PHONG BOT THERMAL POWER PLANT PROJECT 5.1 Site Preparation 5.1.1 Site clearance work • Before Site leveling work start, site clearance work shall be complete and inspection by Contractor and Owner including: cutting tress, grass and removing stubs, household waste, demolition of existing building structure, existing asphalt road pavement VAN PHONG BOT THERMAL POWER PLANT PROJECT Division of working plan for cutting tree • Division of working plan for site cleaning For Building structure, use excavator, hydraulic breaker to demolition In case, the height of structure over 5m such as: post - office shall be filling by soil surrounding: 5.1.2 Survey work • Survey equipment shall be inspected with full calibration document • Check existing bench marks where have been installed during soil investigation period, frequency checked and clarified by certified surveyor or third party VAN PHONG BOT THERMAL POWER PLANT PROJECT condition F Excavation and Disposal – Leveling and Compaction F1 Collision between machines or to building Overturning may cause death or permanent disability Excavated pit collapsed Excavator fall to the pit Burning and explosion of the machine F.2 Dump truck hit person, exist structure at site Collision Traffic accident during transporting 34 F1 Always keep the site clear of any obstruction object Toolbox talk on a daily basic Adequate warning signboard Pre-Check the equipment operation status on a daily basic before starting working shift and marked checked item to the daily checklist provided internal or promulgated by Contractor Check the access of the equipment to the working area Repair any bad condition Secured and warning every presented danger area or deep holes with barricade and signboard at nonexecuting area Keep the machine a safe distance to the slope or excavated pit following Vietnamese standard or Consortium Standard Requirement for executing Slope protection shall be applied especially for the weak ground or in rainy season Slope edge and its ratio must follow excavation technical required due to the ground‘s soil tightness and type Provide proper access to the deep hole bottom pit from 1.5m and above if manual assist required Maintenance or repair must execute at a designate area F2 Provide proper movement route for transportation activities individual to the pedestrian on site Limited speed of 20km/h for the transportation 10km/h at every corner and road crossing Traffic controller must be place at road crossing especially connect point to the local communication way Cover the trunk during transportation to prevent material drop or cause dust spreading Driver must obey signalman or traffic VAN PHONG BOT THERMAL POWER PLANT PROJECT controller request when entering the work area or reverting or during transportation F3 Unnecessary movement of F3 Always keep the site clear of any equipment toward a person obstruction object that causes injury and Designate a signalman who wear the damage red suit and safety helmet (or specialized uniform required by DHI ) to control the traffic and machinery operation Heavy equipment should have backward movement warning light and beacon Equipment used to clear the site should be controlled and stored by signalman Other manual assist task must have safe access and egress to enter the working area F.4 Equipment oil leakage during operation F.4 Daily check of the equipment prior to work Maintenance any damaged of loss part at designated area F.5 Isolate any deep hole existing onsite Set warning sign F.5 Deep hole falling Proper safe walkway or individual walkway for workers No shortcut allow Nomination of restrict area on construct to prevent intruder or shortcut passing G Welding and cutting works G.1 Electric shock, fire, burn to body and injury to eye may cause death or permanent disability G.1 Proper earthling and connection of welding machines and generators Flashback arrestor and gauge should be installed prior to use cutting cylinders Proper PPE to be worn at all times Must use and connect core codes electric wire and separate distribution panel (must pass arrangement of ELCB) and avoid any water affect Must use industrial socket and plug 35 VAN PHONG BOT THERMAL POWER PLANT PROJECT Electric cabinet should not affect any water G.2 Daily check of the equipment prior to start of work G.2 Generator(diesel) equipment oil leakage during operation Regular monitoring of the equipment in order to control and prevent oil leakage and other engine trouble Provide secondary containment protection under the equipment to prevent contamination of the soil by oil spillage If oil leakage, must remove the oil and contaminated soil immediately G.3 Diesel/chemical shall be stored in secondary containment and MSDS requirements shall be communicated with all concerned G.3 Oil/chemical storage H Lifting activities H.1 Proper equipping of PPE H.1 Falling accident Proper use the harness (2 lanyards) and life line over meters Checking the signal of signal man and checking the direction of the material lifting direction All worker who work over meters must be trained the working at height training H.2 Checking the joint status of lifting gears H.2 Falling accident of material Prohibiting man access under the lifting area H.3 Keeping the left over material on the ground 36 VAN PHONG BOT THERMAL POWER PLANT PROJECT H.3 Squeezed by the materials Analyzing the loads (weight, shape, lifting points, etc…) and lifting device to suit the crane capacity H.4 Vertical direction porture manual lifting H.4 Fail manual lifting and carrying Bodily injured H.5 Unexpected intruder H.5 Secure material’s loading / unloading and stocking area if possible I Breaking/ Demolish old structures presented at area I Building collapsed to the vehicle and people Object, waste concrete falling to the vehicle Fragment flying and hit vehicle / personnel Dust spreading and affected to personnel health I Keep the vehicle with a safe distance to the building to execute the task Spread water to reduce dust before thrust and break Nobody will be allowed to stay inside the secured area when starting the breaking Signalman, supervisor to be noted to keep a safe distance to the contact location to prevent any flying fragments hit J Environmental and Dust control J.1 Oil leak on ground Oil/ chemical come to water source J.1 Designated proper and individual maintenance area Repair, maintenance/ fuel refill/ Chemical must have drip tray below to collect any leaking or dripping Absorbed-material must be collect and stored separately and treat with special manner as hazardous wastes Used oil, lubricant material must stored properly and treat as hazardous waste J.2 Extreme environmental condition such as high temperature & humidity and strong wind Dust pollution J.2 Implement safety procedures & guidelines on heat stress Inspect excavation and adjacent area for possible hazardous atmosphere any other condition that may present hazard Suspend / stop all operations during extreme temperature & humidity and high wind 37 VAN PHONG BOT THERMAL POWER PLANT PROJECT Transportation equipment trunk must covered to prevent dust spread during the trip Spray water on road and working area to reduce dust occur while loading and transport ATTACHMENT ATTACHMENT 01 38 VAN PHONG BOT THERMAL POWER PLANT PROJECT ATTACHMENT 02 39 VAN PHONG BOT THERMAL POWER PLANT PROJECT ATTACHMENT 03 40