Mô tả: The purpose of this Method Statement is to describe the methodology for structural work of METHOD STATEMENTS FOR DREDGING WORKS 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 DREDGING WORKS Document Type For Approval Document No VP1-0-L4-C-GEN-10019 Returned Status AC Prepared by CRS No VP1-0-L4-C-GEN-10019-D-CRS CRS Issued Date 08-Jun-2020 Engineer Construction Review Date Status O/C * Remarks 27-03-2020 Open 08-05-2020 Closed 21-05-2020 Closed No Section/ Page Page Owner’s Comment General comment: (i) Please clarify elevation system is NDL or CDL where mention elevation number (ii) All dredging equipment have to install Automatic Identification System (AIS) and video camera according to Decree 159/2018 ND-CP 08-05-2020 Noted Lot-4 please submit documents related to AIS before start working Response to Comment L4 (i) Elevation system is NDL (ii) DHI will be applied for hopper barge and THSD only, all Clamshell and Flat Barge did not applied 19-05-2020 Noted 21-05-2020 Closed Page of 14 Comment Response Sheet (CRS) Page (1) Please make clear whether all dredged materials are suitable for use in reclamation and how about the unsuitable materials? (2) The temporary tide gauges shall be installed to give immediate visual measurements of sea level Please describe more detail (3) How can Contractor to ensure there are no localized high spots of the dredged areas before acceptance of the final levels by the Owner Please describe more (1) Based on EIA report which has been approved by government, all dredged material can be reuse for landfill 08-05-2020 (1)&(2): Agreed (3) Multi-beam echo sounder is not clear Please reflect in the ITP also 19-05-2020 (3) ITP has been issued according to multi-beam eco sounder method, multi-beam eco sounder is common method to ensure that these are no localized high spots of the dredged areas 27-03-2020 Open 08-05-2020 Open 21-05-2020 Closed 27-03-2020 Open 08-05-2020 Open 21-05-2020 Closed 27-03-2020 Open 08-05-2020 Closed (2) DHI has revised on MS (section 2.1.2) (3) For Post survey and Final survey, the Contractor shall the survey with 10m interval lines and multibeam echo sounder to obstruction detecting 21-05-2020 Noted Page Please point out where are construction buoys and specification of them? DHI has revised on MS (section 2.1.1) 08-05-2020 Open: please describe construction buoys which will issued maritime notice by Port Authority as well 19-05-2020 Navigation buoys is requested to marine notice by Port Authority that described on the Marine Safety Assurance Plan 21-05-2020 Closed Page Please clarify design and slope protection of this area 08-05-2020 Closed Slope is mention on drawing deign which will be submitted separately document Page of 14 Comment Response Sheet (CRS) Page Please consider Vietnam has a series of international conventions governing maritime safety agreement, it should be referred on this MS 08-05-2020 There is not any convention added such as MarPOL 73/78 for oil prevention, SOLAS-74 for safety of life at sea, STCW convention for training certification and watching for seafarers, etc Page DHI has revised on MS (section 1.3.3) 19-05-2020 DHI has revised on MS (section 1.3.3 27-03-2020 Open 08-05-2020 Open 21-05-2020 Closed 27-03-2020 Open 08-05-2020 Closed 27-03-2020 Open 08-05-2020 Closed 27-03-2020 Open 08-05-2020 Closed 27-03-2020 Open 08-05-2020 Closed 27-03-2020 Open 08-05-2020 Closed 27-03-2020 Open 08-05-2020 Closed 21-05-2020 Closed "Described" DHI has revised on MS (section 1.4) 08-05-2020 Closed Page EL (NDL)? Elevation system is NDL 08-05-2020 Page Closed 4,0mCD according to design drawing DHI has revised on MS (section 1.4) 08-05-2020 Closed Page How many m3 per hour? DHI has revised on MS (section 1.5) 08-05-2020 Closed 10 Page How many m3 per hour? DHI has revised on MS (section 1.5) 08-05-2020 Closed 11 Page How many m3 per hour? 08-05-2020 DHI has revised on MS (section 1.5) Closed Page of 14 Comment Response Sheet (CRS) 12 Page (i) Please add the recuse boat, passenger boat and tug boat (if any) to the list (ii) All marine equipments have to be obtained permit from Port Authority before work in the Project (i) DHI has revised on MS (section 1.5) (ii) All marine equipment’s will be obtained permit from Port Authority before work in the Project 27-03-2020 Open 08-05-2020 Closed 27-03-2020 Open 08-05-2020 Closed 27-03-2020 Open 08-05-2020 Closed 27-03-2020 Open 08-05-2020 Closed 27-03-2020 Open 08-05-2020 Closed 27-03-2020 Open 08-05-2020 Closed 08-05-2020 13 Page Closed Please describe, here, this is subcontractor EHS manager right? where is EHS supervisor??? DHI has revised on MS (section 1.6) 08-05-2020 14 Page Closed - Supplement the circle duration of each equipment - Supplement the estimated capacity of each equipment per day, required q'ty per day and number of equip to be assigned at each location to assure schedule DHI has revised on MS (section 2.2 and 2.3) 08-05-2020 15 Page Closed (i) Please clarify where is tide gauge station? The tide gauge have to comply with Article 9.2.6.2 in specification (ii) Please describe frequency, line interval of postsurvey (iii) Final survey should be mentioned as well 08-05-2020 16 Page Closed Font (i) DHI has mention on section 2.1.2, location will be confirmed later (ii) DHI has revised on MS (section 2.2.4) and it will be complied with ITP which will submit separate document (iii) DHI has revised on MS (section 2.2.5) and it will be complied with ITP which will submit separate document DHI has revised MS 08-05-2020 Closed 17 Page This sentence is not clear, please explain 08-05-2020 DHI has corrected and deleted it, it’s not applied Closed Page of 14 Comment Response Sheet (CRS) 18 Page 11 Please explain how the trucks can run on landfill without getting bogged down? 08-05-2020 Noted Lot-4 please pay more attention on safety matter during construction stage The truck is transporting dredged material to the Landfill and dumping, method is same with site development method which was approved by Owner 27-03-2020 Open 08-05-2020 08-05-2020 Closed 21-05-2020 Closed 27-03-2020 Open 08-05-2020 Closed 27-03-2020 Open 08-05-2020 Closed 27-03-2020 Open 08-05-2020 Closed 27-03-2020 Open 08-05-2020 Closed 27-03-2020 Open 08-05-2020 Closed 27-03-2020 Open 08-05-2020 Closed DHI noted 21-05-2020 19 Page 12 Closed the depth is lower than -6.0m, it means EL