Method Statements for Test Pile of Access Trestle andCoal Unloading Jetty_The purpose of this Method Statement is to describe the methodology for structural work of Method Statements for Test Pile of Access Trestle andCoal Unloading Jetty and to details out the steps to be taken in meeting the technical requirements of Van Phong 1 thermal power plant project
Comment Response Sheet (CRS) Project Title Van Phong BOT Thermal Power Plant Project Document Title Method statements for test pile of Coal Unloading Jetty Document Type For Approval Document No VP1-0-L4-C-GEN-10014 Returned Status AC Prepared by CRS No VP1-0-L4-C-GEN-10014-D-CRS CRS Issued Date 08/05/2020 Engineer No Section / Page Owner’s Comment Response to Comment 04/02/2020 The Contractor shall verify pile designs by installing preliminary piles or by using permanent piles to: • Review and check the pile lengths necessary to satisfy the Contractor’s design; • Assess the skin friction and end bearing components of soil resistance; • Calibrate pile dynamic testing against static test results; • Calibrate pile dynamic driving formula against static test results, hammer types and settings and hammer energy delivered to the pile as obtained from dynamic testing; • Review the Contractor’s pile installation method Those purpose of preliminary piles test shall be incorporated in this MS, and the report should clearly mentioned result of each above items 26/02/2020 DHI confirmed that pile designs will be verify by preliminary pile Review Date Status O/C * 06/03/2020 C L4 Project Remarks 06/03/2020 Closed Page of 31 Comment Response Sheet (CRS) 04/02/2020 General comment: Please describe who are from DHI's EHS team reviewed this document? It seems no one from EHS team has been reviewed this document, Please make sure that VPCL is not Doosan's consultant 26/02/2020 The EHS team of DHI reviewed this document 06/03/2020 C 06/03/2020 Closed Page of 31 Comment Response Sheet (CRS) 04/02/2020 (1) Number of test piles, locations and theoretical bearing capacity calculation to be provided 06/03/2020 (1) Noted 10/04/2020 (1) Cal for Prelim test pile Coal Unload Jetty&Access Trestle still not approved 04/02/2020 (2) Item 3.2 manpower: Accuracy of test results are critical then Cvs/experiences and qualified certificate of key persons be shown (4) item 5.1: Provide reference for 100% and 200% DWL And no tensile and lateral test carried out be subject to approval by the VPCL (5) item IV Pile driving: pile driving stop criteria not clear Noted that refusal paper use for piling record should be applied to see the rebounce during final blows 06/03/2020 (2) Noted (4) Noted (5) Noted 04/02/2020 (6) Item 5.5.2: in case load reach to the maximum test load but total displacement still not reach to 10% pile diameter, continue loading to be asked Please describe more 26/02/2020 (1) Number of test pile, locations and theoretical bearing capacity calculation is shown in attachment 01, 02 06/03/2020 C 10/04/2020 O (2) Test will be done by laboratory staff whom has been got approved by document No VP1MOC-003 06/03/2020 C (4) Reference for 100% and 200% DWL is shown in attachment 02 Testing pile work and due to TCVN 9393:2012 (5) This comment will be clearly by construction drawing and method for pile driving which will be submitted by separate document 06/03/2020 C 29/04/2020 VP1-0-L4-C-UZR-05700 Calculation prelim TEST PILE, COAL UNLOADING JETTY AND ACCESS TRESTLE has been approved by 16 April 06/03/2020 (6) In case of load, DHI will be carried out following the ASTM D1143M 06/03/2020 C O 06/03/2020 (6) termination of loading: when load up to maximum test load but total displacement still not reach the ultimate 10% of pile diameter, it is recommended that to increase load to the failure to estimate actual Page of 31 Comment Response Sheet (CRS) pile bearing capacity (origin of 15 % pile diameter?) Noted: with reference to TCVN, failure load is recommended to take 250%- 300% Ptk for test pile and 150 %-200% for test of working pile 31/03/2020 DHI has updated load up to 250% and revised on this MS (rev c) 10/04/2020 (6) Noted and subject to approval of VPCL (7) This MS cannot used for site construction since there does not support information for quality control of site welding for steel pile connection (if applied) as well as detail measurement of rebound value as per approved calculation 04/02/2020 There is no attachments was found in this MS 29/04/2020 Test pile material shall not weld at site Rebound measurement shall be conducted by total station machine/ leveling machine, Rebound record has been mention on ITP 26/02/2020 DHI has added the attachment to the MS Rev B 10/04/2020 C 10/04/2020 O Closed 06/03/2020 C 06/03/2020 Closed Page of 31 Comment Response Sheet (CRS) 04/02/2020 - Clarify the sequence of piling test: when will start axial static test and PDA test? Which one is previous test? 26/02/2020 - The PDA test shall be performed first then axial static test shall be performed 06/03/2020 C 06/03/2020 C 06/03/2020 Closed 04/02/2020 - Add the pile arrangement plan; and explain how shall the pile testing result be applied for determine length of pile group in plan - Based on result of Test, the Contractor propose the another formula (for example Hiley formular) or conventional pile refusal method to identify the pile bearing capacity without PDA test or axial static loading test that is important during mass piling work period This matter should incorporate in "Piling Criteria" document for review and approval before start driving permanent piles 26/02/2020 - Pile arrangement plan is shown on MS for Pilling work and the pile testing result will be sent to design team for decision of mass pile - DHI will note this issue 06/03/2020 Closed 26/02/2020 - According to calculation sheet what mention in attachment 02 the tension tests no need to carry out 02/04/2020 According to Section 9.8.4.6 of technical Specification about Pile testing where is describing the requirement for Marine work, and Contractor considered such requirement of contract 04/02/2020 - Axial static pile test should be performed for both of compression and tensile that depend on design (If pile foundation is under high horizontal force; it is also considered horizontal load test) 06/03/2020 Open: Please provide more clear explanation and review Part III-2 Exhibit B1 Tech Spec Section 8, item 8.8.2 Piling 06/03/2020 10/04/2020 O C 10/04/2020 Closed Page of 31 Comment Response Sheet (CRS) 04/02/2020 - Add the introduction of construction structure; specially geology condition at pile test location; - Pile test location is at opened sea; therefore, the working condition should be insisted clearly (wave, wind, current,) in order to ensure the high quality of test result and labour safety issues 06/03/2020 Closed 04/02/2020 No horizontal load test for vertical pile and raking pile? 06/03/2020 Not agree, attachment show the calculation of reaction pile, not test pile 10/04/2020 Closed 04/02/2020 The Testing loads for test pile shall be in accordance to maximum Pile bearing capacity in pile design Contractor to submit Pile design calculation report 06/03/2020 Open, it is not the calculation of bearing capacity of test pile 26/02/2020 - DHI has revised content of this MS, this comment will be clearly on pile driving method which will be submit in separate document - DHI has revised content of this MS, this comment will be clearly on pile driving method which will be submit in separate document 26/02/2020 According to calculation sheet for testing pile what mention in attachment 02 the tension tests no need to carry out 02/04/2020 In calculation structure for piling work, the displacement and bending moment of piles have a limitation not exceed the allowable value, therefore the lateral load test for single pile is not necessary Test scheme is explained in VP1-0-L4-C-UZR05700_A_CALCULATION FOR PRELIMINARY PILE TEST 26/02/2020 DHI has submitted the calculation (refer to attachment 02) which was mention pile bearing capacity 02/04/2020 Test load is determined based on calculation structure for Coal Unloading Jetty which mention in document No VP1-0-L4-C-UZR-05001 06/03/2020 C 06/03/2020 O 10/04/2020 C 06/03/2020 O 10/04/2020 C 08/05/2020 C 10/04/2020 Closed, However the test load should be refer to document no VP1-0-L4-C-UZR-05700 which pile load capacity calculated base on soil condition Page of 31 Comment Response Sheet (CRS) 3 04/02/2020 Refer to related document for Access trestle and Coal Unloading Jetty such as design calculation, drawing, method, MAR, third-party for Testing information, 06/03/2020 Closed 04/02/2020 - Add the standard TCVN 9393:2012 Pile – Standard test method in situ for piles under axial compression load - Add the standard TCVN 11321:2016 Pile high strain dynamic testing for reference - Add the standard TCVN 9394:2012 Pile driving and static jacking works – Construction, check and acceptance for reference - Add the standard TCVN 10304:2014Pile foundation – Specification for reference - Add the standard TCVN 9245:2012 Steel pipe pile - Add TCVN 10318: 2014 Steel pipe piles and steel pile sheet pile for port harbor – Specification for construction and acceptance; - Add TCVN4253:2012 Hydraulic structures – Foundation of hydraulic projects – Design standard - Add TCXD 88: 1982 Pile method of site testing 26/02/2020 DHI has revised and updated on MS Rev B (Section 1.6) 06/03/2020 C 26/02/2020 DHI has revised and updated on MS Rev B (Section 1.6) 06/03/2020 C 06/03/2020 Closed Page of 31 Comment Response Sheet (CRS) 10 04/02/2020 Please clarify what is this equipment definition based on Vietnam Maritime Code No 95/2015/QH13 and decree No 171/2016/ND-CP, are there any other specifications, standards, regulations for this equipment, please mention for our information and supervision? How to know structural platform with the hammer assembled fit with the barge? Are there any confirmation from authority? 06/03/2020 26/02/2020 In this case, DHI has got confirmed with Authority that all document relation with each equipment definition base on Vietnam Maritime require which mention on 95/2015/QH13 and decree No 171/2016/ND-CP 06/03/2020 O 10/04/2020 C 06/03/2020 C 06/03/2020 C 02/04/2020 OPEN please clarify what is this equipment (Watercraft, floating warehouse, movable platform or floating dock) based on on Vietnam Maritime Code No 95/2015/QH13? How to know structural platform with the hammer assembled fit with the barge? Are there any confirmation from authority? Please reflect it detail in this document as it it an integral part for site implementation and supervision 11 10/04/2020 Closed 04/02/2020 Please provide more detail equipment such as leader length of piling barge, capacity of crane on barge How about drilling machine, drilling barge? Base on Vietnam Maritime Code No 95/2015/QH13, Equipment for piling work is movable platform structural platform with the hammer is shown in the verification certification of Phu Xuan 17 which is submitted when equipment is delivered to the site 26/02/2020 Detail equipment shall be provided on certification when equipment’s are mobilized to the site DHI has updated Drilling machine and barge to MS Rev B (Section III) 06/03/2020 Closed 13 04/02/2020 Do you (Subcontractor & DHI) dispatch any HSE guys to supervise this activity? 26/02/2020 DHI will dispatch HSE to supervise this activity 06/03/2020 Closed Page of 31 Comment Response Sheet (CRS) 14 15 16 4 04/02/2020 Basically, the number of test pile with exactly location, estimated pile length, tip elevation, cut off elevation should be designed and calculation first Base on the design and soil condition, the Contractor will propose pile driving method and testing procedure to verify the calculation and decide the final pile length 06/03/2020 Closed 04/02/2020 Clarify recommended for use only “Driving method by diesel hammer machine will be applied” for Access trestle, no use “Driving – drilling – driving method”? (In the Details of test pile-Page 8, Length of Pile test for Access trestle (50m) is longer than Wharf (42m) 06/03/2020 Closed 04/02/2020 Any plan to prevent oil spread to the sea due to diesel hammer is quitted challenge during pile driving for environmental issue? 06/03/2020 OPEN Please detail what document for information, please be noted that the oil can spread to the sea in the time of test pile work due to diesel hammer so the the oil spreading prevention must be submitted pertaining to this method statement, This are also one part of mitigation environmental control, please not separate out of this document 26/02/2020 Well note, this comment will be mention clearly on the design document 26/02/2020 Well note, this comment will be clearly on method of pile driving which will be submitted on separate document 26/02/2020 Well note, this comment will be clearly on method of pile driving which will be submitted on separate document 29/04/2020 DHI has revised and updated on MS Rev D – Attachment 02/04/2020 DHI has mention on MS rev C (section 6.2, please refer) 06/03/2020 C 06/03/2020 C 06/03/2020 O 10/04/2020 O 10/04/2020 C 10/04/2020 Closed Page of 31 Comment Response Sheet (CRS) 17 18 19 20 4 04/02/2020 Pulling force act on Pile of Access trestle or not? 26/02/2020 Pulling force not act on pile of Access trestle 06/03/2020 Open Please provide evident 02/04/2020 Please refer to calculation for Access Trestle No VP1-0-L4-C-UZL-05002 which has been submitted to Owner in separate document 10/04/2020 Closed 04/02/2020 Please be noted that, according to "Part III-2 Exhibit B1 Tech Spec Section 9, item 9.8 Piling", one of purpose for installation preliminary piles is to review the Contractor's pile installation method In case the Contractor's proposed method is not suitable or fail, the Contractor shall propose other driving method for review and approval 06/03/2020 Closed 04/02/2020 The Contractor shall keep complete and accurate pile driving records in a standard format with all necessary information to verify the design calculation 06/03/2020 Closed 04/02/2020 Is this for Access Trestle pile ? 06/03/2020 Closed 21 04/02/2020 Is this for Jetty pile ? 06/03/2020 Closed 26/02/2020 DHI has noted this case 26/02/2020 DHI has noted, and this comment will be clearly on method of pile driving which will be submitted on separate document 26/02/2020 This work for all pile which should be braced after first driving and this comment will be clearly on method of pile driving which will be submitted on separate document 26/02/2020 This work for all pile which after second driving should be braced for cut-off pile head and this comment will be clearly on method of pile driving which will be submitted on separate document 06/03/2020 O 10/04/2020 C 06/03/2020 C 06/03/2020 C 06/03/2020 C 06/03/2020 C Page 10 of 31 VIEN KHOA HQC VA C6NG NGHP GIAO TH6NG VAN TAI cnuyEx NGANH co xni TUoeNc HoAoo rUoxc rni NcruEM var ru rHrBT BI CAU ETI0NG QUOC Cm vr4,N pHoNG Eia chi: 36 IZSZ, Ducrng Ling - Ddng Ea - Hd N6i Tel: 024.376642481 Fax: 024.37663942l Hotline: 0989.144.450/ Email: vilas276@gmail.com CHTTNG NHAN HIEU CHUAN (C alibr ati on C ertffi c at e) s5 @): 230320063/cNHC TT Chi thi tr6n tl6ng h6 tlo chuy6n vi (mm) Chi thi thgc tO tr6n thi6t bi chu6n (mm) 01 0,00 0,000 0,000 02 10,00 10,001 0,001 03 20,00 20,000 0,000 04 30,00 29,999 -0,001 05 40,00 40,000 0,000 06 50,00 50,002 0,002 07 60,00 60,002 0,002 08 70,00 70,000 0,000 09 80,00 80,001 0,001 l0 90,00 89,999 -0,001 11 100,00 99.999 -0,001 Sai sii (mm) * Nhiet dQ hi6u chuAn (Calibration temperature); (2512) "C * V6i dQ khdng dim bAo (tVith the uncerrainty ofl: IJ: 5,93 pm * HQ s6 phu k: v6i mric tin cdy P = 95o/o Hit N/i, ngdy 23 thdng 03 ndm 2020 (Date of Certification) Ngucri thqc hiQn Tested by BM/19/08 ban hdnh/sria dOi: OZIOO vrEN KHoA Hoc vA cONc NGHE GrAo ru6Nc vdN rAr vtEN cHUyEN NGANH CO KHi T(I DONG HOA DO LUONG PHONG THi NGHIEM VAT TU THIET BI- CAU QUOC GIA DUONG Dia chi: 56 1252, Euo'ng Lang - Dong Da - Ha N6i Tel:024.316642481 Fax:024.31663942l Hotline: 0989.144.450/ Email: vilas276(gigmail.com CHI.ING NHAN HIPU CHUAN (C ali s5 TOn phucrng tiQn (Object): b r ati o n C ertifi c at e) 1tue1 : z3o3zoo62/cNHc D6ng trd tlo chuy6n vi Kiiiu (Type); Ccr, chi 36 $erial YDC 231 No); thi s6 Nufc sin xudt (Manufacturer); Nh$t Bin D{c trung k} thuf,t (Technical Specifications): Ph4m vi tlo (0+100) mm DQ chia nh6 Co s& sfr dBng (Customer): Phucrng phfp thqc hiQn (ln accordance with): ChuAn, thi6t bi chinh ilugc sfr dgng (Standard used): Li6n k6t chu6n Qraceobility): Kiit qun COng nh6t: 0,0lmm fy CA phAn Tu vdn Xiy dgng Cdng trinh Thiry PP-PTN.O9 Thi6t bihi0u chuAn d6ng h6 so; dQ kh6ng ddm b6o U:0,5pm vrEN DO LTIONG VrET NAM Viet Naw Metrologlt Institute (Results): Ngny hiQu chu6n t6i (Recalibration due): (Xem trang sau) 23103t202t I{it ll|i, ngdy 23 thdng A3 ndm 2020 (Date of Certification) Phdng thi nghiQm ffi#* TP Dinh Trgng ThAn ui,/cnn 1\ or\ ', K> Trans I /) vrFN KHoA Hec vA cdxc NGHE GrAo rn6Nc vAN rAr vrEN cHUyEN NGANH CO KHi TUDQNG HOADO LUONG PHONG THi NGHIEM VAT TUTHIfT BI CAU DUONG QUOC GIA Dia chi: Sa nSZ, Ducrng Ldng - D6ng Da - He NOi Tel:024.376642481Fax:024.31663942l Hotline: 0989.144.450/ Email: vtlas276@gmail.com CHT]^NG NHAN (C a I i br ot i o n S6 1tue1 Chi thi trOn tldng h6 : HIPU CHUAN C er t ifi c at e) 230320062/CNHC TT chuy6n vi (mm) Chi thi thrpc t5 tr6n thi6t bi chuin (mm) 0l 0,00 0,000 0,000 02 10,00 10,001 0,001 03 20,00 20,001 0,001 04 30,00 30,001 0,001 05 40,00 39,999 -0,001 06 50,00 49,ggg -0,002 07 60,00 59,ggg -0,002 08 70,00 70,000 0.000 09 80,00 80,001 0,001 10 90,00 90,000 0,000 11 100,00 100,000 0,000 Sai sii (mm) * Nhiet d6 hiQu chuAn (Colibration temperature); (25+2).C * Vdi dQ kh6ng ddm b6o (With the uncertainty ofl: IJ: 5,92 * HQ s6 pht k :2 v6i mric tin cdy p 95yo yt"m = Hd N|i, ngiry 23 thdng 03 ndm 2020 (Date of Certification) Nguli thqc hiQn Tested by Hodng Nggc BM/19/08 Tdt 2i2 LAn ban hdnh/sua d6i: 02100 Ngdy ban hdnh/sria aOi: :O.Og.t tl VIEN KHOA HOC VA CONG NGHE GIAO THONG VAN TAI vTEN CHUYEN NGANH Co KHi TU DQNG HoA Do LUoNG pHoNG rni Ncn$nr vdr rtl rHffiT BI CAU DU0NG qUOC CIA Dia chi: S5 t ZSZ, Duong Ldng - Dong Da - Ha Noi Tel 024.316642481 Fax 024.31663942l Hotline: 0989.144.450/ Email: vi1as276(ggmail.com CHTING NHAN HITU CHUAN (C ali br ati on C ert s6 (td) T6n phucrng tiQn (Object): Diing : 23o3zoo6t/cNuc trd Co chuy6n vi Ki6u (Type): Co, chi thi s6 35 gerial YHH No); ifi c at e) 154 Nufc sin xufft (Manufacturer): Nh$t Bfrn D{c trung k} thuflt (Technical Specifications): Ph4m vi tlo (0+100) mm EQ chia nh6 * 50m3 VI Detailed Equipment check list See the check list as bellow: VAN PHONG BOT THERMAL POWER PLANT PROJECT DỰ ÁN NHÀ MÁY NHIỆT ĐIỆN BOT VÂN PHONG