Tran Hoang Na Bridge is in danger of breaking the schedule. Reasonable proposal Up to this point, Traffic Construction Corporation 1 (Cienco1), the main contractor for the construction of Package CT3 – PW – 2.4, construction of Tran Hoang Na Bridge under the City Development Project. Can Tho and enhancing urban adaptability, using World Bank (WB) loans are still waiting for a response from the City’s ODA Construction Investment Project Management Board. Can Tho City (PMU ODA Can Tho City) on the proposal to replace the subcontractor for the steel beam structure of the main Tran Hoang Na bridge. The Department of Construction Management and Quality of Traffic Works (Ministry of Transport) said that the addition of construction subcontractors is very normal in traffic projects and is within the authority of the main contractor if the contractor additional contractors to meet the capacity and experience of construction. Previously, on June 7, 2021, Mr. Dinh Ngoc Vuong, Chairman of the Board of Directors of Cienco1, term 2019 – 2024 had Document No. 341/2021/CV – TCT sent to PMU ODA City. Can Tho would like to replace the subcontractor performing steel structure processing in Package CT3 – PW – 2.4, building Tran Hoang Na bridge. Cienco1 said that in the process of negotiating the contract for Package CT3 – PW – 2.4 between Cienco1’s Board of Directors, term 2014 – 2019 and PMU ODA City. Can Tho, the main contractor has proposed Nam Anh Technology Construction Equipment Co., Ltd. to assume the role of a subcontractor to supply and manufacture steel arches and steel beams. However, through the actual inspection, the incumbent leader of Cienco1 discovered that Nam Anh Company is just an intermediary (commercial) unit without factories, engineers and technical workers with direct production experience. , as well as do not own construction machinery and equipment. “In order to ensure the quality of the work and the progress of the project, the main contractor consortium would like to replace Nam Anh Company with a unit with real experience and capacity in the field of beam structure production and construction. steel bridge Tran Hoang Na. This is a necessary job to ensure the progress and quality of the work,” Vuong emphasized. It is known that the bidding package CT3 – PW – 2.4 has the goal of building Tran Hoang Na bridge crossing the Can Tho river, 586.9 m long, 23 m wide at the main span (4 lanes), of which the main bridge is built. arch bridge design includes 3 spans of steel structure, span diagram 49.25+150+49.25m. Cienco1 – Bridge 14 Joint Stock Company is the winning contractor for construction with the winning bid price of VND 791.4 billion. According to the agreement with the leaders of Cienco1 for the 2014 – 2019 term, Nam Anh Company was assigned to process and install the main bridge steel arch with a value of about VND 99 billion. According to the original plan, Package CT3 – PW – 2.4, construction time of Tran Hoang Na bridge took 34.4 months, but to be in line with the agreement to borrow PMU ODA capital in Ho Chi Minh City. Can Tho negotiated with the contractor to shorten the construction schedule with the completion time of 22 months. In order to meet the schedule that has been shortened by nearly one third compared to the bidding documents, at the beginning of August 2020, Cienco1 had Document No. 646/TCT – KH requesting PMU ODA TP. Can Tho considers adding 3 subcontractors to the Package CT3 – PW – 2.4, to build Tran Hoang Na Bridge, which are Thanh Long Group Joint Stock Company, Van Cuong – Vinawaco, and Waterway Maintenance Management Joint Stock Company. No. 12. In which, Thanh Long is recommended to additionally undertake the processing of 40% of the volume of steel arch structure. All main materials and erection are still undertaken by Cienco1. “The addition of Thanh Long is necessary to shorten the construction schedule of the Package”, Document No. 646 of Cienco1 said. Concerns of pmu oda TP. need poetry without foundation Talking to a reporter of the Investment Newspaper, a leader of the Department of Construction and Quality Management of Traffic Works (Ministry of Transport) said that the addition of construction subcontractors is very normal in traffic projects. and is within the competence of the main contractor if the additional contractor is capable of construction experience; the subcontractor’s volume does not exceed the contract rate. Previously, the Procurement Management Department (Ministry of Planning and Investment) also had an opinion that the addition of a subcontractor of Cienco 1 was not against the law. In Document No. 201/QLDT-CS dated February 22, 2021, the Procurement Management Department said: If there are no prohibitions in the donor’s instructions, bidding documents, and contracts signed between the parties. Regarding the change in the percentage of the subcontractor’s workload, the addition of the subcontractor after the contract has been signed, the main contractor’s request to add more subcontractors, increase the rate of using subcontractors from 40.81% to 49.57% (not exceeding the maximum rate of using subcontractors specified in the bidding documents as 50%) to implement the bidding package to ensure shortening the contract schedule from 34 months down to 22 months is not against the sponsor’s regulations. It is known that in the documents rejecting the proposal to add subcontractors to the construction of steel structure fabrication items of Cienco1, PMU ODA TP. According to Can Tho, the arch and steel beam structure system of Tran Hoang Na bridge is a complex structural system with seamless requirements, high mechanical precision, and strict and concentrated quality management requirements. Therefore, if the processing is done by 2 units, it will give rise to technical risks such as not ensuring the synchronization; does not guarantee compliance with the test installation procedure. However, Cienco1 said that the above concern of PMU ODA City. Can Tho is unfounded, because the main contractor has specifically divided each detailed scope of work for two subcontractors, Nam Anh and Thanh Long, to ensure the construction meets the schedule as well as the synchronization. of texture. “With experience in management, operation and quality control, art through many similar projects, Cienco1 is committed to completing the bidding package to ensure the quality of art according to the standards of the project”, representative of the contractor. main said. By PMU ODA City. Can Tho continues to have concerns about uniformity, Cienco1 has decided to replace subcontractor Nam Anh with another unit with experience in manufacturing and installing traffic and civil steel beam structures. It is worth mentioning that the current PMU ODA City. Can Tho has not yet responded to the proposal to replace Nam Anh subcontractor while the construction progress of Package CT3 – PW – 2.4, construction of Tran Hoang Na bridge is very urgent. Investment Newspaper also contacted Mr. Bui Thai Thuong, Deputy Director of PMU ODA City. Can Tho, who is directly in charge of Package CT3 – PW – 2.4 but also did not receive a response.

The scene of the collapsed factory frame of Texhong Vietnam Co., Ltd. Regarding the incident of 4 spans of steel structure frame in Hai Ha Industrial Park, recently, Texhong Knitting Vietnam Co., Ltd. has just issued Document No. 2021-13 / THDK / 0421, reporting to relevant authorities. this accident. Overview of the project, the knitting factory in Texhong-Hai Ha Industrial Park has an investment capital of 4.979 billion 780 million dong (214,000,000 USD), capacity 82,500 tons of products per year. Currently, 50% of the work items have been built such as: Textile factory I, Stereolithic warehouse I, Ammonia treatment workshop, technical infrastructure area I, medium voltage power station, wastewater treatment station, warehouse. solid waste storage I, chemical storage … It is expected that this July, the factory will complete the construction of the factory and install equipment and machines for production. Report of Texhong Knitting Vietnam Co., Ltd. Zamil Steel Vietnam Pre-Engineered Steel Building Co., Ltd, the contractor is giving the gift on the roof frame when an incident occurred, tilting 4 spans of steel structure from X3 axis to X7 axis. Initially, the investor, the contractor and the supervision consultant said: the purlins and the temporary anchoring system were not firmly linked, when the steel truss frame was installed on a high load met with heavy rain. both causing collapse. The content of the text mentioned that the weather, due to the holidays, few workers but the persuasion is not high, because no matter how much construction is done, the construction solution must ensure the safety of the landscape and environment. . Electronic Construction Newspaper continued with this information.

The two halves of these nuclear submarines cut in half were Perle and Saphir, respectively. From these two halves, the French experts performed grafting into the complete ship.

The French expert said that the reason they can be joined together by two submarines of the same line, both of the Rubis class and identical design.

The two halves of the submarine were prepared to be grafted by France.

The fact that France had to use two halves of two different submarines to combine because in June 2020, a fierce fire that lasted for 14 hours made the front of the Perle submarine on the dock unusable due to steel structure is deformed, some places do not guarantee the original stability.

But the other half of the 73m-long submarine, which displaced 2,600 tons, was unaffected by the fire. Meanwhile, the French Navy has a Saphir, in the same class, which was decommissioned in 2019 and is waiting to be dismantled.

The front part of the Saphir was assessed to be structurally stable, qualified to be paired with the back of Perle to form a complete attack submarine.

The Perle was then cut in half in February and March. After being placed on a calibrated shelf, the second half of Perle and the front half of the Saphir are now fully welded, the French Navy said.

Paired product is still named Perle but a bit longer. Naval Group said that all pre-construction designs are 3D digital modeling and ensure reliability, safety and does not affect the inherent design of the ship’s combat capabilities.

Perle entered service in 1993, the newest of the six Rubis-class nuclear submarines in the French Navy. During a joint resistance exercise in 2015 between the French and US Navy, a Rubis submarine “sank” the US aircraft carrier USS Theodore Roosevelt.

This exercise took place within 10 days off the coast of Florida, to test the performance and combat capabilities of this aircraft carrier after 4 years of overhaul at a cost of up to 2.6 billion USD.

The French submarine named SNA Saphir S602, belonging to the Rubis nuclear attack submarine class participated in exercises with the US Navy’s Carrier Task Force No. 12, including the USS Theodore Roosevelt ( CVN-71), multiple Ticonderoga-class cruisers and Arleigh Burke class Aegis destroyers and a Los Angeles-class nuclear attack submarine.

Phase 1 of the maneuvers went well when the French navy’s SNA Saphir nuclear submarine was ordered to join the allied US forces in a simulated conflict, in which the states thought The statue attacked the economic and territorial interests of the United States.

By the second phase of the exercise, the submarine SNA Saphir acted as an enemy submarine, with the mission to find and destroy the giant US aircraft carrier.

To do this, Saphir spent days stalking, bypassing the outer barrier under constant threat from P-3C Orion anti-submarine patrol aircraft and P-8A Poseidon of the US Navy, zones Arleigh Burke class destroyers and other anti-submarine defense ships.

The Saphir dodged the detection of anti-submarine forces, broke into the defense systems of the carrier group to avoid detection of long-range anti-submarine equipment and quietly approached the ship. airports worth billions of dollars of the US Navy.

The Saphir was close to the American aircraft carrier USS Theodore Roosevelt and commanded the carrier to lock the target of the carrier in his periscope. The French submarines were then only a few hundred meters from the American aircraft carrier, within the effective range of anti-ship weapons such as torpedoes and Exoxet anti-ship missiles.

Both the US aircraft carrier combat information center held its breath when it discovered the incident and was alarmed when it was attacked by French ships. An attack order was issued, and the Saphir “sunk” theoretically the USS Theodore Roosevelt and most of her escort ships.