Hoang Hieu Trung, Director of Quang Binh PC said, to ensure stable power supply, the unit will continue to invest in completing the power grid, improving power supply capacity to meet the demand for capacity growth of the load. . The company has also assigned 100% of officers and employees to be on duty, to regularly check the system of transmission lines and substations; mobilize vehicles and machinery to promptly handle incidents in the fastest time. Instructing customers to install the EVNCPC CSKH app to monitor electricity consumption. Due to extreme hot weather, the frequency of using air conditioners, cooling devices, and electronic devices for family activities will be more. This leads to the risk of overloading, power failure, even increased risk of fire and explosion, unsafe operation of the power system. Therefore, in order to save electricity costs effectively and ensure enough electricity for socio-economic development, national defense – security and daily life, production and business of people in the province, PC Quang Binh recommends that customers use electricity safely and economically. Specifically, for businesses, PC Quang Binh recommends balancing and arranging production schedules in the direction of reducing electricity use during peak hours, increasing electricity use during off-peak hours; at the same time, enterprises invest in energy-saving production equipment and coordinate with the Electricity sector to monitor and control power quality. “Hot repair” is one of the solutions to minimize the power outage time of customers in hot weather. In addition, Quang Binh PC requires the electricity companies to actively answer customers about problems in calculating electricity bills, and advise people on how to use electricity economically and efficiently. The affiliated units must well control the index recording and index review to promptly detect and handle abnormal cases, avoiding possible errors. In particular, the Company propagates to customers to use tools and utilities of the electricity industry to actively monitor electricity consumption and control high electricity bills in the hot season such as the EVNCPC Customer Service application on devices. mobile phone or a tool to estimate electricity consumption in daily life for electricity users nationwide at website: https://uoctinhdiennang.evn.com.vn/.

An important thing to keep the house cool is to make sure the windows and doors are in positions that allow good air circulation. The best time to open the door to catch the cool breeze is from 5am to 8am and from 8am to 10pm. During this time, the air is considered to be quite fresh and can dispel the heat in your home. If you can ensure anti-theft and health issues, open the living room windows at night to catch the coolest air. You can install insect nets to keep them out of your home. Air conditioning makes the Earth hotter. 2. Use the side door Windows absorb heat, making your home hotter. The solution is to install nets to help prevent heat from entering the house. Please close the net from 11am to 4pm. Materials such as bamboo, jute… are environmentally friendly and also make the house look cooler, avoiding dark or too bright colors. If you must go outside, be sure to close the mesh doors to prevent heat from entering the room. 3. Light tone Leather, silk, satin with pillows, sofas or other furniture… will absorb heat faster. Change to cotton or linen that wicks away sweat and also helps you feel more comfortable. 4. Wall paint color sơn Light paint colors make the house more comfortable. Want to dispel the hot and stuffy feeling of summer, choose a light, gentle and pleasant wall paint color such as: light yellow, pastel pink, beige, white or blue tones. There are even heat-resistant paints on the market today to help keep your home cooler. 5. Ceiling treatment Choosing UV-resistant paint to cover the ceiling is the fastest way to reduce the temperature. This is a paint that is mainly composed of film-forming agents with the ability to insulate and reflect sunlight. This type of paint acts as a coating to help the wall have more durability, resist dust, moisture and make the house cool and comfortable. 6. Trees Coconut palm, aloe vera or fern have the effect of purifying indoor air. In addition to that function, plants also help the house look cooler and more comfortable. Placing potted plants in the east and west of the house will help reduce the heat of the sun. In addition, growing climbing plants on the balcony also helps to keep the house cooler. 7. Electrical equipment Conventional light bulbs do not have the power-saving function and also make the house hotter because of the amount of heat emitted from it. Use bulbs like LED or fluorescent CFL. Don’t forget to turn off the light switch when going out, unplug electronic devices when not in use because they still give off a certain amount of heat.

The remote operation success rate is over 99%. When an incident occurred, 81% of affected customers were immediately transferred and restored to power in less than 5 minutes (compared to 120 minutes of TCT’s regulation). The process of investment in development and modernization of the power system in Thu Duc City over the past years has shown that the reliability of power supply has improved significantly. Average number of outages per customer (SAIFI) is 1 time/year; the average outage time of a customer (SAIDI) is about 60 minutes/year – much lower than the 2015 index of 6 times/year and 700 minutes/year, respectively. With the motto “Electricity is one step ahead”, Ho Chi Minh City Electricity Corporation has a plan to prioritize investment in the development of the power system for Thu Duc City, focusing on developing smart grids in parallel with deploying other utilities. underground works. The goal is that by 2025, the electricity output supplied to the people of Thu Duc City will reach 5,500-6,500 kWh/person/year, the average number of power outages is less than 0.3 times/person/year and the average duration of power failure. less than 30 minutes/person/year. Mr. Pham Quoc Bao, Chairman of the Members’ Council of Ho Chi Minh City Electricity Corporation. In the period of 2021-2025, Ho Chi Minh City Electricity Corporation will invest about VND 3,200 billion to build a new 220 kV station and 6 110 kV stations (total added capacity is 1,382 MVA), develop 245 new stations km of medium voltage grid; 585 km of low voltage power grid, renovating and installing 447 distribution substations with a total capacity of 363 MVA in Thu Duc city. In this year, the corporation will complete Phuoc Long 110 kV station, start construction of new 110 kV Linh Dong station, 220/110 kV Thu Thiem station and 110 kV Thu Thiem station 1. In addition, the Ho Chi Minh City Electricity Corporation deployed 27 projects to undergroundize the power grid combined with information lines in Thu Duc city, in order to increase the undergroundization rate of the medium voltage grid from less than 50% at present to 75. -80% by 2025. With the motto “Customer is the center”, the electricity industry promotes digital transformation to improve the quality of electricity supply and customer service for the whole Ho Chi Minh City, including Thu Duc City. The focus is on promoting digital transformation in power system operation management and customer service provision in Ho Chi Minh City. The Corporation promotes the development of smart grids in Thu Duc city with the investment of a remote metering system, increasing automatic components on the power grid. Currently, the Corporation has basically completed the installation of distance meters in Thu Duc city. By the end of this year, 100% of medium voltage lines in Thu Duc city will operate fully automatically (DAS/DMS). In the period of 2021-2025, the corporation will continue to invest in strengthening remote control devices for medium voltage lines, along with solutions to close loops, and enhance the form of construction without power cut (live- line), in order to improve the flexibility of transmission, reduce the range and number of customers affected by power outages (if any). View of Thu Duc city. On the other hand, the corporation promotes the development of EVNHCMC Customer Care application (app) on the phone. The area of ​​Thu Duc district (old) has completed the installation of distance meters since 2020. Customers can monitor their daily electricity consumption through this application. All electrical services are provided online by the corporation. Customers do not have to go to the electricity headquarters to register, instead register for the service on the customer care website or via the app) EVNHCMC Customer Service of the corporation. In addition, TCT also promotes the application of 4.0 technology in surveying, designing and improving procedures to continue to improve the electricity access index, ensuring all investment projects through the medium voltage grid. 22 kV power supply for customers is carried out by the electricity industry within 5 days, contributing to attracting investment businesses in the city. “EVNHCMC prioritizes focusing resources, rapidly developing modern power systems in Thu Duc city, in order to ensure the power supply capacity to meet the city’s development needs, constantly improving the quality of electricity. electricity and customer service, contributing to building Thu Duc City into a new growth pole of Ho Chi Minh City, worthy of its potential and meeting the expectations of leaders and people”, Mr. Pham Quoc Bao positive.

Using a low-quality electric fan contains many risks. Illustration Ms. L (Hai Ba Trung, Hanoi) was urgent, in order to prevent power failure, she chose to buy a rechargeable fan on the online market for 750,000 VND but only used it twice and it broke. After the fan broke, she contacted the online store, they said that because she used the fan in the wrong way, it was broken, the store was not responsible. Similar to the case of Ms. L, Ms. Van Anh residing in (Thuong Cat – Hanoi) also bought an electric fan for 900,000 VND, but it broke after using it for exactly one season. Worth mentioning, in addition to the common rechargeable fans, the current mini-charged fans are also widely sold on the market. Mini electric fans are quite diverse in type, capacity, and function, but they have the common characteristics of low price, only from 20 to 100 thousand VND / unit, compact size, can be easily carried when traveling . Not only is it easy to find and buy in shops, but also on online sales applications, this item is also very popular. Most mini-charged fans are rechargeable via USB or use AA batteries (rabbit batteries), allowing easy charging and replacement. With those utilities, mini-charged fans are currently very popular, especially with students, students or those who often move and work outdoors. According to electrical experts, if you can find a fan with clear origin and strict quality control, the risk of fire and explosion is very low, unless used in the wrong way. However, with cheap products, widely sold, the risk of poor quality electric fans, prone to fire and explosion is very high. Speaking of the risk of using low-quality rechargeable fans, refrigeration repair experts added, there are many cases of buying a rechargeable fan to use for a short time and then not charging or the indicator light is full. But after only a few minutes, it’s all due to buying a poor-quality fan and improperly charging the battery. Besides, in order to increase product prices and deceive buyers, these products are also ordered by stores with Vietnamese packaging from China and sold at many times higher prices. To ensure the most effective and durable use of electric fans, consumers when choosing to buy in addition to choosing large and reputable electronics stores and supermarkets must also pay attention to product brands and brands, see battery capacity. Do not choose a type of electric fan with too many functions because when used it will not achieve the desired effect. (According to Viet Q)

Cheap electric fans sell full of network market On the online market, many electric fans are sold for cheap from 190,000 to 250,000 VND. Ms. HG (the owner of an online address that sells electric fans) said that this type of fan is being bought by a lot of people. Ms. HG also confirmed, customers are checked goods before payment. Electric fans for sale spread online market. Screenshots Not just online marketplaces, Cheap electric fans It is also offered for sale on e-commerce floors with prices around 200,000 VND. As described by the seller, the electrically charged fan has a very strong wind power. Accessories included with the fan include charging cord, manual, paper box. Ms. VA (Hai Ba Trung, Hanoi) shared: “In order to prevent the power outage, I ordered an electric fan on the internet market for 250,000 VND. However, it has only been used a few times, it failed”. Charged fans for sale on an e-commerce platform. Screenshots Meanwhile, Mr. KB (Long Bien, Hanoi) bought for more than 700,000 dong only used a broken season. In addition, many types of mini electric fans cost only a few tens of thousands of dong to 100,000 dong. This fan has a compact size, can be convenient to carry on the go. The mini-charged fans mostly use rechargeable batteries via USB or use AA batteries (rabbit batteries), allowing for easy charging and replacement. Risk warning specialist However, according to electrical experts, charged fans have a clear origin, strict quality control, and the risk of fire and explosion is very low, unless used incorrectly. With cheap products, rampant sale, the risk of low-quality electric fans, potentially many risks. Experts say that, in fact, there are many cases of buying an electric fan to use for a short time, the power is not charged or the indicator light is full, but only a few minutes, it is all due to buying poor quality fans and users. the charger is not used correctly. There are even cases where the fan suddenly explodes after 30 minutes of charging. Therefore, to ensure the most effective use of electric fans, consumers should buy at large and reputable electronics stores and supermarkets, but also pay attention to brands, product brands, and see battery capacity. regulations.

Submarine KRI Nanggala-402. Choking because of CO2 CNA quoted Mr. Clark – a naval expert – who used to be a submarine sailor – as CO2 accumulating in the KRI Nanggala-402 submarine can suffocate the crew even if they have not exhausted oxygen. “CO2 needs to be filtered out of the atmosphere with a chemical. But this chemical will soon run out. Oxygen can be produced by chemical candles. But CO2 will suffocate the crew before running out of oxygen. ” The power outage also affects the crew’s lifetime, Clark said. Electricity is needed to operate the CO2 absorber and the fan transfers air through the oxygen candle. The Indonesian lifeboat joins the search for the KRI Nanggala-402 submarine. Photo: AP Why the submarine lost power? Underwater submarines often depend on battery power, Clark said. And a breakdown in the battery compartment such as fire, explosion, flooding, etc. can cause a power failure. Meanwhile, Mr. Ben Ho – naval analyst said that a torpedo explosion could also cause the submarine to lose power. “Historically, major submarine accidents have often occurred due to technical problems or weapon explosions. Indonesian submarines went missing while torpedo shooting exercises. Maybe a torpedo exploded, ”said Mr. Ben Ho. Oil spills at the location where the submarine went down on the morning of April 21. Photo: AP Submarine locator If the submarine is intact, it can be “relatively easy” to be located using sensors, Clark said. Magnetic sensors, similar to mine detection systems, can detect the steel hull of a submarine. Sound sensors can show the sound from submarines. “But the area they need to look for is relatively large. The sensors can only be effective in a small area. Searching can take a long time. ” Mr. Ben Ho, meanwhile, said that even modern sonar equipment can hardly detect the wreck of a submarine if the seabed is rough. “The submarine’s nature is inherently difficult to detect. Submarine fleets are often referred to as silent soldiers, ”said Ho. If the submarine is truly trapped at a depth of 600 meters or less, the crew has a “near zero chance of survival,” said Ho. “The grim reality is that once the submarine exceeds its maximum depth, it will explode due to the enormous water pressure.” If this happens, the explosion will be picked up by a sensor in a nearby area, he added. Rescue process Once the submarine is found, Singapore’s MV Swift Rescue can begin its mission. MV Swift Rescue is the first ship in Southeast Asia capable of rescuing submarines. Singapore’s MV Swift Rescue train. Photo: Facebook The ship can operate at sea for four weeks before needing refueling. On board is a rescue cabin named Deep Search and Rescue Six (DSAR 6). Cabin is used to evacuate crew from submarines. However, Mr. Clark warned that the biggest challenge is the lying direction of the submarine in distress. “For example, if the submarine is on its side, the DSAR 6 will be difficult to reach.” Cabin DSAR 6. Photo: Facebook According to the naval news site Naval Technology DSAR 6 is 9.6m long and can reach a depth of 500m. It is operated by two crew members and can accommodate up to 17 people. When the DSAR 6 floats to the surface and is recovered by MV Swift Rescue, the submarine crew will be transferred to a recovery chamber for treatment. The cabin can accommodate up to 40 people. Singapore and Indonesia signed a cooperation agreement to assist with submarine rescue in 2012. The agreement allows the two countries to send resources and help each other if their submarines crash. The KRI Nanggala-402 submarine went missing on the morning of April 21 while participating in a torpedo drill near Bali. On board there are 53 people, including 49 sailors, a commander and three weapons specialists. The 1,395-ton KRI Nanggala-402 was built in Germany in 1977, and joined the Indonesian fleet in 1981. About 40 countries in the world have submarines, but only a few countries have the ability to rescue submarines.

Priz AS-28 was successfully rescued New chapter in rescue history In the military history of the United States, the rescue of the Sargo-class USS Squalus submarine of the US Navy has become a major event and also a lesson in operational deployment of submarines. The incident took place on the morning of May 23, 1939, the Sargo-class submarine USS Squalus with 59 crew members began their usual test dives off Portsmouth, New Hampshine, without knowing they were about to experience a disaster. USS Squalus was the new and best submarine of the US Navy at the time. The ship was launched in September 1937 and has undergone 18 successful trials. No one thought it would fail on the 19th test, because all the systems on board were still working fine. However, due to a technical error, the technician wrongly announced the coordinates of the submerged vessel up to 8km down. Squalus dives while the main air intake valve remains open, causing tons of seawater to enter the engine bay at the rear of the ship. The sailors on board were shocked to hear the news and rushed to find a way for the ship to float. They built flooded compartments and tried to close the air intake valves but failed, before putting compressed air into the ballast tanks to allow the ship to float. The Squalus is stable with the bow pointing upwards. However, when the sailor tried to prevent seawater from entering through the vent pipe, there was a tremendous increase in pressure. The sea water suddenly flooded the front compartments and the ship began to sink to the ocean floor due to the large amount of seawater. The incident caused 26 sailors at the back of the ship to be immediately killed by water, 33 men in front of the ship survived. The Squalus sank to the bottom with the bow pointing upward at an angle of about 11 degrees, lost power completely, was unable to communicate and was in waters with temperatures just above freezing. The Sculpin was then dispatched to the Squalus’ coordinates on the last contact, but did not detect any signs of disaster such as debris or oil spills. No one aboard the Sculpin knew that they were 8km away from where the submarine was sunk. Meanwhile, the surviving sailors aboard the Squalus try to send out a call for help. Captain Naquin quickly ordered the release of a floating buoy attached to the cable and left a phone inside with the words “submarine sinks here, there is a telephone inside”. The crew constantly fired smoke bullets out, as well as pumped oil through the toilet so that the rescue team could detect smoke and oil spills in the sea. A sailor aboard Sculpin detected a streak of smoke rising into the sky and reported to the captain. The Sclupine arrives, finds the beacon and cell phone and communicates with the Squalus ship. That night, the US Navy deployed several ships anchored around the search area and turned on the headlights on the sea surface, while the crew on the Sclupine submarine tried to get close to the Squalus. The Squalus submarine salvage was rejected because it was too dangerous and risky. The rescuers had only two options: to transfer diving equipment to sailors to float to the surface, or to use a rescue cocoon from above, but this equipment had not been verified. The first option was canceled because when the sailors exited the submarine, it was very susceptible to cold and high pressure under the sea. The next day, the divers used the rescue cocoon. They performed four rescues with the last man on the surface at midnight May 25. This rescue campaign opened up a new chapter in the history of underwater rescue. Difficult to save because of “invisibility” Military submarines are originally designed to travel undetected under the ocean. Except when there is a need to contact headquarters, the ship will not transmit any signal. Meanwhile, the submarine detector is only really effective when finding a ship that is “in the middle of the sea or floating on the surface”. In fact, the submarine’s submarine stealth is a double-edged sword. With each passing hour, the hopes of saving the ship became less and less. Sailors will have to reduce their activity and move to reduce their oxygen consumption while they wait to be rescued. Although they have been trained in emergency self-rescue, their chances of survival depend on the depth of the ship. On August 5, 2005, the Russian submarine Priz AS-28 and its crew of seven were trapped at a depth of 190 meters below sea level after the propeller was caught on an undersea cable. The sailors were trapped in darkness on the cold ship and the oxygen supply dropped. This accident has attracted much attention because it happened just five years after the sinking of the nuclear submarine Kursk (in 2000), killing all 118 sailors. The Russian government immediately requested US and UK assistance; at the same time to plan to rescue the ship. The first was the scheme to detonate the anchor system of the Russian surveillance antenna system installed under the sea (weighing 60 tons), but was rejected because it was not feasible. By the end of August 6, the command decided to hook the cable to the ship, tow the ship up close to the water surface so that the crew could rescue the sailors. But this plan also failed. On the night of August 6, the race against time reached its peak because the oxygen in the train was only able to endure until August 7. The British Super Scorpio 45 unmanned submersible has entered the game. According to commander Jonty Powis, an expert on British submarine rescue and rescue, the campaign went smoothly. The ship has successfully severed the cables that are clutching the Priz submarine. Commander Powis praised the Russian government’s openness to allow rescue parties to intervene in the area that was once one of the most secretive parts of the Soviet Union before. After just 3 days of being stranded under the sea, the ship finally emerged. All 7 crew members are healthy. Although suffering from the cold and the oxygen in the ship was gradually running out, when rescued, sailors were able to open the submarine’s cover and move to the lifeboat without assistance. According to the examination results at the hospital, the health of all 7 people was still normal and did not need any special treatment. This shows that the crew responded very professionally to the extremely strict situation in the ship stranded at a depth of 190 meters under the sea. They wore insulation to keep their bodies warm, maximized energy savings by only intermittent contact with the mainland and tried to stay calm so as not to lose the meager oxygen on board.

The news comes a day after debris believed to be from submarine KRI Nanggala-402 was found floating away from the submarine’s last communication capture location in the Bali Sea. Tjahjanto said during a press conference that the Indonesian warship Rigel scanned the area with sound waves, using sound waves to locate objects and magnetometers. Then the MV Swift Rescue from Singapore sent a remote control vehicle (ROV) to get a clearer underwater visualization of the wreck, he said. The wreck of the submarine was found – Photo: Indonesian Navy According to Mr. Tjahjanto: “We have found and photographed parts of the Nanggala submarine such as the transverse steering, the anchor, the outer hull, the vertical steering and other parts of the submarine such as the safety clothing for the crew. Based on that evidence, I declare that the Nanggala submarine sank and the entire crew is dead. ” Indonesian Navy Chief of Staff Yudo Margono said the submarine was found at a depth of 850 meters and broke into three parts. He said the Indonesian government will work with the International Submarine Rescue and Escape Liaison Office “because salvage of the Nanggala submarine will require international cooperation”. The KRI Nanggala 402 is one of two Cakra attack submarines, the German-made Type 209 submarine and exported, and was commissioned by Indonesia in 1981. This submarine is 59.5 m long, 6.2 m widest, with a diving displacement of 1,390 tons. The ship operates by diesel-electric engine, cruise speed when diving is 21.5 knots (nearly 40 km / h), range of 15,200 km. Previously, The Guardian reported on April 21 from the Indonesian navy that power outages occurred while the KRI Nanggala 402 was diving, causing the ship to lose control and unable to conduct emergency procedures to allow the ship. rise.

Indonesian submarine KRI Nanggala 402 and a crew of 53 people last contacted the headquarters at 3 am on April 21 to ask for permission to dive into the sea during torpedo drills off the coast of Bali and then lost contact completely. Full from 4:30. The Indonesian navy said it had a power failure while diving, causing the ship to lose control. Indonesian KRI Nanggala 402 train. Photo: Getty Images In recent days, Indonesian officials have deployed 3 submarines, 5 aircraft and 21 military ships to search for the KRI Nanggala 402. Sonar sonar systems have also been deployed to search for motion and sound below. country but not yet have satisfactory results. Indonesian officials confirmed the amount of oxygen stored on board only enough for 3 days after the power failure. This morning (April 24), that deadline has passed, making the prospect of finding surviving sailors nearly dissipated. Indonesia is expected to turn the rescue of sailors into submarine salvage missions. The Indonesian Navy said the submarine was most likely to sink at a depth of 600-700m, but the KRI Nanggala 402 usually only operated at a depth of about 250-500m. Anything greater depth is dangerous because the water pressure on the hull can crush the hull. Tragedy of ARA San Juan, 44 Argentine soldiers were killed In November 2017, Argentina’s ARA San Juan diesel-powered submarine went missing about 430km off the Argentine coast with 44 sailors traveling from Ushuaia base to the city of Mar del Plata. ARA San Juan Front Section. Photo: AP During the last communication, the ARA San Juan reported a problem with the machine due to water overflowing through the vent pipe, causing a short circuit of a battery. Three hours after this announcement, a sound like a loud explosion appeared about 50 km away from where ARA San Juan last informed. Argentina started its ARA San Juan search campaign with support from 15 countries, including Russia and the US, but stopped it a few weeks later because there was no significant clue. By 2018, the ship’s wreck was found at a depth of 900m. The Navy said it found debris 11, 13 and 30 meters long, the hull was crushed inside. Argentina admits it does not have modern technology to bring submarines back to land and has not decided how to handle the wreck. The Kursk submarine sank in the Barents Sea with 118 sailors Around 11:30 a.m. on August 12, 2000, while doing exercises to fire fake ammunition in the Barents Sea, two major explosions in a row suddenly occurred inside the nuclear submarine K-141 “Kursk” of the Russian Navy. A few minutes later, Kursk slowly sank to the bottom of the Barents Sea. Unlike the disappearances, the Kursk was located shortly after it crashed. But despite a series of quick relief measures, the Russians could do nothing more, all 118 sailors and officers died. The Kursk submarine broke in two after the tragedy. Photo: TASS The last time the ship was seen surfacing in port was around 5:00 a.m. on August 12, 2000. In the Severomosk area, the Northern Fleet, the ship slowly advanced from the port of Murmansk to the Barents Sea during a mock torpedo shooting exercise. Joining the K-141 Kursk was another ship of the Typhoon class and the K-114 “Tula” (Delta IV class). Over the past 20 years, many different theories about the accident of the state-of-the-art nuclear submarine Kursk have been issued, many believe that the disaster was caused by a fault in the design or Russia violated the rules. weapon maintenance. Kursk submarine in the photo taken in April 2000. Photo: S. Volkov One theory is that the Kursk submarine was mistakenly shot by an American submarine operating in the Barents Sea and the two sides negotiated to “close down” the incident to avoid a military conflict that could push the whole world. world into the dark scene. Meanwhile, according to the final conclusion of the Investigation Committee of the Russian Government, the cause of the sinking was an explosion that occurred while the ship was preparing to launch a torpedo on a simulated target during the exercise. . Submarine K-8 sank due to fire At the time of launch, the Project 627A Kit (November class) K-8 attack submarine was considered the pride of the Soviet Navy. But the ship also authored a tragedy that took the lives of 52 sailors in 1970. According to RBTH, a fire broke out in the compartment when it set sail on April 8, 1970. The captain ordered the nuclear reactor to be shut down and left the ship. K-8 submarine of the Soviet Union. When a tugboat arrived at the scene, 75 sailors returned to the ship in an attempt to bring the K-8 back to base. However, the ship was anchored off and lost control in rough sea conditions. 52 sailors who returned to the ship died from CO2 poisoning before rescuers could reach them, 23 were saved. The K-8 then sank to the sea floor with four nuclear torpedoes at a depth of 4,680 m and 490 km northwest of Spain. The depths were so great that it was nearly impossible to salvage the ship. Experts believe that the torpedoes carrying nuclear warheads on the sea floor could lead to radioactive leakage catastrophic damage to the environment. The first nuclear submarine crashed The world entered the race to develop nuclear submarines since the outbreak of the Cold War. In 1963, the nuclear attack submarine USS Thresher became the first nuclear submarine to crash, when it crashed during a test operating at a depth of 400 meters. USS Thresher set sail in 1963. Photo: Getty Images The accident killed all 129 crew members on board. To this day, this is still the submarine crash with the highest death toll in history, more than the tragedy of Russia’s Kursk submarine. According to the US Navy, a malfunction in the electric motor supplying to power the main cooling pump caused the nuclear reactor to stop working, so there was no electricity to pump water out of the empty chamber for the ship to float. Thresher sank under inertia and exploded at a depth of about 730 m due to the water pressure exceeding the hull’s stamina. After the USS Thresher disaster, the US Navy adopted the SUBSAFE program to ensure the quality of the submarine from design to fabrication. US submarine mysteriously disappeared In May 1968, the nuclear attack submarine USS Scorpion, the Skipjack class of the US Navy, went missing with 99 sailors 643 km southwest of Portugal’s Azores island. The ship was scheduled to return to the port on May 27, 1968, but it did not appear. The year 1968 also marked the disappearance of four other submarines, including the Israeli INS Dakar, the French Minerve and the Soviet K-129, arousing much speculation. Submarine USS Scorpion. Photo: ITN According to sources, on May 16, 1968, the USS Scorpion left the US naval base at Rota (Spain) with 99 sailors, along with the USS John C. Calhoun. Scorpion was sent to observe Soviet naval activities in the Atlantic in the vicinity of the Azores. Around midnight on May 21, Scorpion sent a message to a US Navy communications station in Nea Makri (Greece) reporting that the ship was near a Soviet submarine and the team “began monitoring. Soviet Union “, and is running at a steady speed of 28 km / h at a depth of 110 meters. That was Scorpion’s last contact. To date, it is not known exactly what happened to the ship, only to be told that the US Navy launched a search operation, but there was no clue. By the end of 1969, an ocean surveying vessel of the US Navy discovered submarine SSN-589 sinking at a depth of 3,048 m. The US Navy did not provide detailed information on the accident, but some sources said that the accidental explosion of the Mark 37 torpedo caused water to flood the ship and the USS Scorpion quickly sank, before being pressured. crushed water.

Search helicopters and many other ships left Bali and a naval base in Java headed for the area out of contact with the KRI Nanggala-402 on April 21 as she prepared to conduct a torpedo exercise. . If the submarine was still intact, officials said it would only have enough air for the crew members to survive until around dawn April 24. “So far we have not found it … but with existing equipment we can find the location,” – Achmad Riad, a spokesman for the Indonesian army, said during a press conference. An Indonesian air force pilot said six tons of equipment had been moved to a base to help with the search, including an underwater hot air balloon to help lift the ship. One of the Indonesian military ships involved in the search for the submarine – Photo: Reuters The Indonesian navy said it was investigating whether the submarine lost power when submerged and could not perform emergency procedures when it sank to a depth of 600-700 meters, exceeding the allowable limit. The Chief of Staff of the Indonesian Navy – Yudo Margono said an object with “high magnetic force” was found “floating” at a depth of 50-100 meters and an earlier aerial search had detected a trace. The oil spills near the location where the submarine last caught the signal. Navy spokesperson Julius Widjojono said the diesel-electric submarines can withstand depths of up to 500 meters but surpassing this threshold can kill people inside. The Bali Sea can reach a depth of more than 1,500 meters. One of the men on board was the commander of the Indonesian submarine fleet, Harry Setiawan. The submarine was commissioned into the Indonesian fleet in 1981 and underwent refitting in Korea, completed in 2012. It was said to be in good condition before meeting, the Defense Ministry said. accident. Australia, India, Malaysia, Singapore and the US have sent special ships or aircraft to respond to Indonesia’s request for assistance. The US military is sending a P-8 Poseidon to assist with the submarine search. The Pentagon said US Defense Secretary Lloyd Austin spoke with his Indonesian counterpart and offered additional assistance, which may include navigating underwater search equipment. Two Australian Navy ships are also heading to the search area including a frigate with special sonar scanning capabilities. Indonesia operates five submarines – 2 German-made Type 209s and three newer Korean ones.

KRI Nanggala submarine at naval base in Surabaya, Indonesia, February 20, 2019. (Photo: AFP / VNA) The Pentagon on April 23 said US Secretary of Defense Lloyd Austin offered to provide his Indonesian counterpart Prabowo Subianto with underground weapons to assist in the search for a lost Indonesian submarine. The Pentagon statement emphasized: “Defense Minister Lloyd Austin this morning discussed with Indonesian Defense Minister Prabowo Subianto to express concerns about the disappearance of the Indonesian submarine KRI Nanggala 402 as well as the fragile division of the 53 crew members on board. ” The Pentagon also noted that the two sides had discussed the recent deployment of the P-8 Poseidon to aid the search. Minister Austin has proposed to increase support, possibly including the provision of underwater search assets, for this effort. Show the army Indonesia deployed two naval submarines capable of detecting submarines to assist with the search. The KRI Nanggala 402 was suspected of having a total power outage while still diving in the Balinese waters on the morning of April 21 before sinking at a depth of 600-700 meters./.

P-8 Poseidon hunting plane. Photo: The Drive According to the CNN In addition to the US P-8 submarine hunting aircraft, a frigate with sonar scanners and an Australian helicopter are also participating in the search for the Indonesian KRI Nanggala-402 submarine. Meanwhile, deep-sea lifeboats are en route to Indonesia from India and Singapore. Indonesian officials said on Friday that if the submarine was intact and working properly, the sailors would only have enough oxygen to survive until dawn Saturday. “So far, we haven’t found it yet. But with existing equipment, we may be able to locate the submarine, ”Achmad Riad, a spokesman for the Indonesian military, said at a press conference. Submarine KRI Nanggala-402. Photo: USN Collin Koh, an expert at the Indonesian Institute for Strategic and Defense Studies, said that assuming a submarine has enough oxygen for 72 hours is an optimistic statement, as the submarine’s oxygen-generating capacity will be limited during power outages. . “So it’s possible that the oxygen has run out,” Koh said. Experts like Koh said Indonesia will have to expand the search area again if the highly magnetic object proves not to be a ship. Koh also warned that if the submarine falls to “extreme depth”, it will be almost impossible to find. The Bali Sea can reach a depth of more than 1,500 meters. At the time of his disappearance, there were 53 people on board. Including commander of Indonesian submarine fleet – Mr. Harry Setiawan. KRI Nanggala-402 submarine went missing on the morning of April 21 while participating in a torpedo drill near Bali island. On the morning of April 22, oil spills were discovered at the submarine’s diving location. On the morning of April 23, a metal object with a high magnetism was found. But since then, there have been no more clues. On the morning of April 24, the reserved oxygen on the ship was exhausted.

KRI Nanggala 402 submarine Therefore, the focus of current attention will be to salvage the ship’s wreck from the waters off the coast of Bali, Indonesia. Previously, the Chief of the Indonesian Navy Yudo Margono said on April 23 that the country’s rescue team discovered an object with “high magnetism” floating at a depth of 50 to 100 meters off the north coast. Bali island, near where submarine KRI Nanggala 402 was identified lost contact. They are preparing to deploy naval ships equipped with hydroacoustic systems to the area, to confirm whether this is an object from this submarine or not. After the KRI Nanggala 402 went missing, the navy of Singapore and Malaysia sent warships to join the search, while a series of other countries such as the US, Australia, Germany, France, Russia, India, Turkey Ky and South Korea also offered assistance. Information from the TNI military website said that the missing KRI Nanggala 402 submarine was built in Germany and put into service with the Indonesian navy since 1981. This ship has undergone a two-year refurbishment process. Korea and completed in 2012.

Yudo Margono, the naval chief of staff, told reporters that authorities had found an object with “high magnetic force” floating at a depth of 50 to 100 meters. Authorities hope the object could be the missing submarine and are currently waiting for a naval ship with underwater detection facilities to help them investigate the object further. The Indonesian military has so far declined to comment on whether the decades-old submarine, carrying 53 crew, is overpowered. Submarine KRI Nanggala-402 – Photo: Reuters However, they said the submarine may have sank to great depths after a power outage left the crew unable to control the ship. If the object is found to be part of the submarine, the navy suspects the crew may have discharged its fuel load after a power outage to allow the submarine to float. Navy officials feared the submarine might explode. Collin Koh, a naval expert and research fellow at the S. Rajaratnam School of International Studies in Singapore, said damage to the fuel tank could cause “big trouble”. Naval spokesperson Julius Widjojono previously told KompasTV that a battery-powered submarine when submerged could only maintain a depth of 250 to 500 meters. “Anything that makes it go deeper than that can be fatal and dangerous,” he said. The waters in the region are shallower than in other parts of the archipelago but can still reach depths of more than 1,500 meters.