Biện pháp thi công nhà xưởng tiền chế tiếng anh

Biện pháp thi công nhà xưởng tiền chế tiếng anh estimated to be suitable for progress and construction plan in each period In this work contractor focuses on concerning about things for high quality and artic construction work _ Equipment: Contractor ... concrete with the same thickness as protected concrete and grade as one of structure concrete Preliminary acceptance for reinforcement Drill

FOR APPROVAL 23.05.2019 B 24.04.2019 A Rev Date Owner N.N.Chinh N.N.Chinh Prepared W.I.KWAK W.I.KWAK Checked J.T.SEO J.T.SEO Approved REVISE AS PER OWNER COMMENT FOR APPROVAL Details of Revision Owner’s Engineer Contractor DOOSAN HEAVY INDUSTRIES VIETNAM Sub-Supplier ATAD STEEL STRUCTURE CORPORATION Project NGHI SON BOT THERMAL POWER PLANT PROJECT (2 x 600MW) Title METHOD STATEMENT FOR TURBINE STEEL STRUCTURE INSTALLATION Document No Rev NS2-DD09-P0UMA-170001 Page-No B 38 METHOD STATEMENT FOR TURBINE STEEL STRUCTURE INSTALLATION NS2-DD09-P0UMA-170001 RECORD OF REVISION Rev Date Page Affected A 24.04.2019 First issue B 23.05.2019 Second issue Rev.B Description of Revision of 38 METHOD STATEMENT FOR TURBINE STEEL STRUCTURE INSTALLATION NS2-DD09-P0UMA-170001 CONTENTS INTRODUCTION SCOPE OF WORK 3 DIFFINITON & ABBREVIATION REFERENCE DOCUMENT SITE ORGANIZATION CHART AND RESPONSIBILITIES ERECTION SCHEDULE MANPOWER MOBILIZATION & EQUIPMENT MOBILIZATION PLAN WORK METHOD STATEMENT 8.1 Erection Plan 8.2 Erection Sequence 8.3 Unloading Plan 8.4 Chipping and padding work 12 8.5 Erection for column, beam, bracing 14 8.6 Plumpness and alignment 16 8.7 Assembly by bolting 17 8.8 Grouting for erected steel structure 18 8.9 Erection for Truss 19 8.10 Welding and Painting 19 8.11 Analysis of Crane Capacity 20 QUANLITY CONTROL PLAN 25 10 DETAILED ERECTION PLAN FOR TBN STEEL STRUCTURE 27 11 SAFETY MANAGEMENT PLAN 30 Rev.B of 38 METHOD STATEMENT FOR TURBINE STEEL STRUCTURE INSTALLATION NS2-DD09-P0UMA-170001 INTRODUCTION This method statement describes the procedure and sequence of activities to be carried out during the turbine building steel structure erection in order to ensure that the work is planned and performed in accordance with the contract and designer’s recommendation at Nghi Son Coal Fired Thermal Power Plant This document is prepared based upon the Project Specification, EPC Contractor’s Technical Specification This document only applies for Nghi Son thermal power plant project SCOPE OF WORK This method statement will be applied to the Turbine building steel structure erection and other steel building of Nghi Son Coal Fired Thermal Power Plant 2x600 MW to ensure compliance with approved drawings, project technical specification and procedures The erection scope of work and estimated quantity of each work are as below: Description Zone #1 Unit Zone #2 Zone #3 Main Structure Zone #4 Unit Zone #5 Other Meta decking including stud bolt, end plate and accessory Steel grating Steel pipe handrail High strength bolts/nut/washer non - shrinkage grout for structural steel column Quantity 768 768 1286 768 1854 3348 13493 7180 4496 267 67,2 Remark DEFINITION & ABBREVIATION - Unit Ton Ton Ton Ton Ton Ton M2 M2 M Ton M3 CONTRACTOR: Doosan Heavy Industries Vietnam SUBCONTRACTOR: ATAD Steel Structure Corporation QA/QC: Quality Assurance and Quality Control HSSE: Health Safety Security and Environment JSA: Job Safety Analysis NDT: Non-Destructive Testing AISC: American Institute of Steel Construction REFERENCE DOCUMENT - Issued Drawings: NS2-VN03-P0UMA-170361 ~170379; NS2-VV07-POZEN-170108 ~170109 Approved Site Quality Control Procedure, Document no NS2-CH04-P0ZEN-040001 Project EHSS Management Plan Painting Procedure, Document no NS2-YR01-P0ZEN-070001 ANSI/AISC 360: Specifications for the Design, Fabrication and Erection of Structural Steel for Buildings - AISC 303: Code of Standard Practice for Steel Buildings & Bridges - Specification for Structural Joints using ASTM A325 or A490 Bolts - ASTM A36/A36M: Standard Specification for Carbon Structural Steel Rev.B of 38 METHOD STATEMENT FOR TURBINE STEEL STRUCTURE INSTALLATION NS2-DD09-P0UMA-170001 - ASTM A6/A6M: Standard Specification for General Requirements for Rolled Structural Steel Bars, Plates, Shapes, and Sheet Piling - ASTM A325M: Standard Specification for High strength bolts for structural steel joints, including suitable nuts and plain hardened washers - The welding procedure specification (WPS) shall be qualified in accordance with standard AWS D1.1 SITE ORGANIZATION CHART AND RESPONSIBILITIES 5.1 Site Organization Chart 5.2 RESPONSIBILITIES 5.2.1 Project Manager: Project Manager will be responsible of the entire activities on the site including preparation, Rev.B of 38 METHOD STATEMENT FOR TURBINE STEEL STRUCTURE INSTALLATION NS2-DD09-P0UMA-170001 maintaining and monitoring of construction progress Project manager will also are responsible for ensuring that all construction activities are performed in conformity with environmental protection standard as well as best safety and quality as requirement in contractual document and specification Manage of all respective construction works include equipment and manpower mobilization plan, construction progress, method statement, QA/QC plan, HSE plan, etc… 5.2.2 Construction Manager: Construction Manager will report directly to the Project manager He is responsible for organization, supervision and control of construction team and all aspect of the construction works to ensure the works to be performed safety, quality and timely manner 5.2.3 Planning Manager: Planning Manager will be responsibility to perform all the reports following project requirement such as daily report, weekly report, and monthly report To monitor and control construction schedule assist Project manager for supervising the schedule Prepare all the construction progress report and submit for Contractor approval 5.2.4 Material control manager: Material control manager will be responsibility to monitor and control all materials received hand over by Contractor Supervise and update the status of delivery material at the site, laydown material and coordinate with QA/QC team to control quality the fabrication cargo 5.2.5 QA/QC manager: The quality control manager will be responsible for ensuring that these activities complied in accordance with the relevant standard procedures and designer’s recommendations Quality control engineer shall also responsible for the documentation and inspection in accordance with the QA/QC Manual and specification 5.2.6 QC Supervisors QC Supervisors are responsible to directly observe/ control the quality of each working team Instruct to construction team about technical requirement, perform internal checking and report to QA/QC manager for final inspection QC Supervisors to provide the requests for inspection (RFI) of work, and attend the inspection at site and prepare all the QA/QC reports submit to Contractor QC team also has responsibility to check dimension, quality, quantity the fabrication cargo when Contractor’s supplier material delivery to site 5.2.7 HSSE Manager/ Officer HSSE Manager will take responsibility of all ESSH (Environment Safety Security and Health) activities at the site HSSE Manager will report directly to Project manager His responsibilities include organize, supervise and control HSSE team and all aspect of HSSE during performing construction works HSSE manager and his staffs shall coordinate with construction team to ensure that all Subcontractor’s activities are complied with Contractor’s HSSE regulations 5.2.8 Superintendent Superintendent will report directly to Construction manager and to be responsibility to supervise closely the erection activities at the site in accordance with method statement and project specification and ensures that the all instructions are followed prior to commencement the erection works 5.2.9 Survey team Rev.B of 38 METHOD STATEMENT FOR TURBINE STEEL STRUCTURE INSTALLATION NS2-DD09-P0UMA-170001 Survey leader will be responsible for checking location of anchor bolt before start erection to make sure accuracy of setting out foundation and tolerance of steel structure erection work Survey leader shall take responsibility all survey works at the site and report to QA/QC manager for monitoring and controlling erection/ installation quality 5.2.10 Document controller Monitor and control all documentations of project, manage all correspondences from Contractor to Subcontractor, to be responsible all submission of documents to Contractor ERECTION SCHEDULE Note: The schedule could be revised by the condition at site MANPOWER MOBILIZATION & EQUIPMENT MOBILIZATION PLAN MANPOWER MOBILIZATION PLAN Note: The schedule could be revised by the condition at site Rev.B of 38 METHOD STATEMENT FOR TURBINE STEEL STRUCTURE INSTALLATION NS2-DD09-P0UMA-170001  EQUIPMENT MOBILIZATION PLAN Note: The schedule could be revised by the condition at site WORK METHOD STATEMENT 8.1 Erection Plan - The erection process start from the turbine Unit#1 after that to be continued such as overall schedule Rev.B of 38 METHOD STATEMENT FOR TURBINE STEEL STRUCTURE INSTALLATION NS2-DD09-P0UMA-170001 (Refer to following an illustration of Steel Structure Work sequence) ■ Road Map around TBN Rev.B of 38 METHOD STATEMENT FOR TURBINE STEEL STRUCTURE INSTALLATION NS2-DD09-P0UMA-170001 8.2 Erection Sequence Receive material at laydown Foundation check Erection column tier #1 Chipping, Padding Works Erection beam, bracing tier #1 Erection column tier #2 Tightening bolts Plumpness, Alignment Erection beam, bracing tier #2 Plumpness, Alignment Tightening bolts Installation Purlin & Girth 8.3 Delivery material to site Assembly & Erection truss & Tightening bolts Grouting works Unloading plan 8.3.1 Lay-down area Map Rev.B of 38 METHOD STATEMENT FOR TURBINE STEEL STRUCTURE INSTALLATION NS2-DD09-P0UMA-170001  50ton H/D Crane configuration  Capacity Rev.B 24 of 38 METHOD STATEMENT FOR TURBINE STEEL STRUCTURE INSTALLATION NS2-DD09-P0UMA-170001  Load chart QUANLITY CONTROL PLAN 9.1 Quality sequence Receive material Check dimension, quantity Foundation check (visual, El bolts, location bolt) Repai r Erection column (check EL, location, Plumb column) Assembly truss, mezzanine floor… Repai r Reject Reject Check EL, location, Plumb column Check bolts tightening, visual Rev.B 25 of 38 METHOD STATEMENT FOR TURBINE STEEL STRUCTURE INSTALLATION NS2-DD09-P0UMA-170001 9.2 Alignment to column  Slope of column 1/500, plumbing tolerance to be smaller 25mm  The columns shall be laid out on their base in the two “X” and “Y” with a tolerance is ±3mm The difference shall not be cumulated from one column to another  Inspect and record alignment of structure shall be carried out after finishing erection In case the results are not satisfactory, repair and re-erection will be done Capture by standard AISC 303-10, item 7.13 Rev.B 26 of 38 METHOD STATEMENT FOR TURBINE STEEL STRUCTURE INSTALLATION NS2-DD09-P0UMA-170001 10 DETAILED ERECTION PLAN FOR TBN STEEL STRUCTURE ■ Zone-1 3D View (Reference) ■ Analysis of Weight Rev.B 27 of 38 METHOD STATEMENT FOR TURBINE STEEL STRUCTURE INSTALLATION NS2-DD09-P0UMA-170001 Step1: - Carry material to site - Unloading material at site Step2: - Column transportation - For primary and secondary column transportation with crane 200T Step3: - To raise column - Column must be raise from the maintenance status by crane 120T & 50T for erection - Crane 120T lift top of column, cane 50T keep bottom column, Step4: - Padding preparation before erection column - Erection column to make a frame to be fix location frame Step5: - Used crawler crane 200 move along Axis A to erection column at GL 12A, 12B, 12C, 12D Rev.B 28 of 38 METHOD STATEMENT FOR TURBINE STEEL STRUCTURE INSTALLATION NS2-DD09-P0UMA-170001 - Column to be put on padding - Worker carry out on boom lift Step 6: - Crane 50T erection beam in order to connect with column - Worker carry out on boom lift Step 7: - Crawler Crane 200T moving along Axis A to erection column at GL 11A, 11B, 11C,11D - Column to be put on padding - Worker carry out on boom lift Step8: - Repeat step for beam erection at GL 11 Step9: - Crane 50T erection beam at GL 11-12/A-F - Worker carry out on boom lift Step10: - Crawler Crane 200T moving along Axis A to erection tier at GL 12A - Crane 120T moving along service road to erection tier at GL 12E, 12F - Worker carry out on boom lift - At top column worker carry out on scaffolding Step11: - Crawler Crane 200T moving along Axis A to erection tier at GL 11A - Crane 120T moving along service road to erection tier column at GL 11E, 11F - All connection bolts must be tightening 75% - 100% before erection tier column - Worker carry out on boom lift under EL +30.000, at top column worker stand inside scaffolding to carry out Step12: - Crane 120T moving along service road to erection beam 11&12/E-F at EL +30.000 - Worker carry out on boom lift Step13: - Crane 200T moving along Axis A to erection beam truck at GL A, E - Worker carry out on boom lift Step14: - Repeating the previous steps in order to accomplish main structure at 11-10/A-F Rev.B 29 of 38 METHOD STATEMENT FOR TURBINE STEEL STRUCTURE INSTALLATION NS2-DD09-P0UMA-170001 Step15: - Repeating the previous steps in order to accomplish main structure at 9-10/A-F - Erection all grating, handrail, deck floor before erection roof Step16: - Erection roof will be done from axis 12/A~F to axis 9/A~F - Crane 120T keep sling for truss at GL 12 - Erection truss at GL 11 by crane 200t with similarly method Step17: (According to site condition) - Crane 120T moving along service road to erection purlin Step18: (According to site condition) - Girts be pulled to required position by electric with pulley at top of column Step19: - Repeating the previous steps in order to accomplish main frame of zone #1  The method erection for Zone2#, zone3#, zone4#, zone5# will be similar 11 SAFETY PLAN 11.1 Safety regulations 11.1.1 For execution vehicles: - All connection details for elevation, combination and installation before, during and after production must be accepted in accordance with regulations on ISO quality management system - Execution and combination equipment at the site must be checked, maintained, load-tested in accordance with regulations on elevation equipment safety under TCVN 4244-86, the inspection certificate must be still effective 11.1.2 For participants - Site leader decides the list of team leaders and staff involved in the work and only those persons are entitled to involve in lifting and installation of equipment, and must comply with the following regulations:  Being trained in execution process, safety measures and being tested, issued safety cards by competent agencies  Being medically examined by competent medical agencies and issued certificate of good health before working  Being provided with a full range of equipment and personal protective equipment in line with the working conditions (safety shoes, protective clothing, hard hats, gloves, anti-dust masks, and safety hardness) and bring all of them when working Rev.B 30 of 38 METHOD STATEMENT FOR TURBINE STEEL STRUCTURE INSTALLATION NS2-DD09-P0UMA-170001  Being strictly forbidden to use alcohol, beer and other drugs before and during working hours as well as at the site  Being only traveled in their working area, prohibited to travel to other areas outside their execution premises when they have yet been permitted The equipment and supplies have strict requirements on safety when put to use in the field, such as cranes, electric hoists, oxygen bottle, gas cylinders, pneumatic cylinders in the construction process must be licensed to use issued by the competent State The equipment and materials on the site must be collected and fully protected when the working hour finishes - Preparing enough drinking water for workers in the working process Necessary barricades, plates at the execution site must be arranged and guarded to prevent people from entering into dangerous areas 11.1.3 Electrical safety: - In the working process, workers frequently expose to the power source through the machinery, equipment and tools for production Therefore, it is highly required that people must comply with strict regulations on power as follows:  Only related persons are allowed to use and operate electrical-run equipment and machinery  Cabinets and appliances are certainly earthed  The power distribution cabinet must have intermediate switches, lid and full safety equipment such as circuit breaker, fuses, and arc devices  1000V, wiring positions must be arranged neatly so that travel, material and equipment transportation cannot be prevented  While working in the dungeon and cellar,  When the machinery and equipment is stopped working or stopped for repairs, it is vital cut off all power sources to the machine While repairing, it is necessary to hang signal "No opening power source, it is in repair.”  When electricity-related work is conducted, it is vital to appoint those having power expertise Each team must have 02 or more  The circuit breakers for supplying power for execution are placed in a covered box to protect against rain and on the stand > 0.7 m above the ground under construction When working at a height of meters or more or less than 2m but having obstacles below, everyone should strictly comply with the following rules:  Only allow people having enough health to climb (listed in the certificate of health issued by competent authorities) for working  If anyone is found using alcohol, beer and other stimulants, they are prohibited from working and taken away from the working area immediately  Workers wear tidy clothes (protective clothing, hardhat with chin strap, protective shoes) Rev.B 31 of 38 METHOD STATEMENT FOR TURBINE STEEL STRUCTURE INSTALLATION NS2-DD09-P0UMA-170001  All equipment and operation location of workers must be absolutely insulated  Wearing safety harness 100% tie off, which are checked by functional departments and loadtested before putting into use  Safety harness are definitely hooked, reliability (Lifeline as shown in the figure), position for hooking belts must be higher than or equal to 2/3 the height of the person to ensure convenience in working  Electric welder and oxyacetylene welder use leather belts  Tools for the execution must be neatly placed in boxes, free from dropping down  Do not throw materials and tools from bottom to top  Around the working location, it is necessary to stretch wire and hang signboard “Prohibit people to travel” in a radius of 5m  When travelling in the operation floor with high danger, it is vital to stretch wire or cable to hook safely  It is vital to cover the working platform to prevent waste materials from falling in the working  Process and industrial hygiene 11.1.4 Fire Safety: When working in easily explosive environments such as oxygen bottles, gas cylinders and flammable chemicals, such as gasoline, oil, paint people should absolutely pay attention to fire and explosion prevention Flame is strictly prohibited in the workplace (except for brazing, welding), all flammable equipment and chemicals should be placed in the prescribed locations, away from heat sources > 10m, carefully shielded warned: "No fire" Gas and oxygen bottle must be placed in warehouse, separated and away from heat sources at least 10m When welding or cutting in areas near flammable materials such as paint, gasoline, oil covering measures must be carefully taken When working in easily explosive environments, it is necessary to make plans for fire and explosion prevention, and fully equip with fire-fighting equipment such as fire extinguisher (foam bottle, CO2 bottle), sand container, water and other tools such as shovels, buckets, pots, bill hooks, woolen blanket 11.1.5 Safe use of lifting equipment in assembly: Operator of lifting equipment must be expertise, skilled and granted training certificate by legal training establishments Be trained in the safe operation of the lifting equipment and issued card by the competent authorities - Must have been fully equipped with personal protective equipment in line with the work - Complying with shift hand-over process, before they control machines, they must check Rev.B 32 of 38 METHOD STATEMENT FOR TURBINE STEEL STRUCTURE INSTALLATION NS2-DD09-P0UMA-170001 whether safe equipment (such as brakes, brake ratchet ), control structure are safe or not During operation, they must pay attention to the alarm clock: load (bearing and allowed) and flip torque of lifting equipment If the alarm clock shows 80% load or more, they must report to the direct leader to assign observers to see balance of lifting equipment, materials and they must perform each operation only, not combine them to avoid instability of lifting equipment and materials When lifting or lowering, moving the lifting device or load, they must show signal to inform everyone around When operating, they must observe the cables (chains, cylinder - lift tables) moving through the pulley (gear), to prevent it from being twisted, disordered or trapped Only using lifting equipment to lift and lower volumes of materials in the vertical position, prohibiting using it in oblique direction or drag volumes of materials on the floor When lifting equipment is operated near power transmission lines, it is necessary to follow safe distance under the power sector standards - Prohibiting moving below, or stand on the volume of materials when it is lifted, moved Signal between the turn signal and the operator of lifting equipment must be consistent, prohibiting letting beak hook deviate from the focus of the material volume when lifting, lowering and assembling it Cable hook points, muffle hook, anchor winch must be solid and appropriate, and crane cable must be in accordance with Vietnamese standard 4244-86 The direct leader at the site must understand the exact weight, size of each volume of materials, clearly writing these parameters on at least sides (deviation of 900) of the volume of materials before assembly and removal, and understand the load characteristics of the lifting device to be used at the construction site The important volume of materials (transformers, generators, control cabinet, pump, technology machine clusters, valve matrix, tanks ) must necessarily use a cable system with safety coefficient> 5, and only allows the load