DAILY CURRENT AFFAIRS IAS | UPSC Prelims and Mains Exam –5th June 2023
Archives (PRELIMS & MAINS Focus) KAVACH Syllabus Prelims –Science and Technology Context: The recent train tragedy in Odisha has brought to the surface the need for KAVACH in preventing rail accidents. Kavach was not available on this route. About KAVACH:- IMAGE SOURCE: newssimplified.in KAVACH is an Automatic Train Protection (ATP) electronic system designed to help the Indian Railways achieve Zero Accidents. Objective: to achieve safety in train operations across Indian Railways. Development:- It has been indigenously developed. It is developed by the Research Design and Standards Organisation (RDSO) in collaboration with the Indian industry. Research Design and Standards Organisation (RDSO): it is a research and development organisation under the Ministry of Railways. Working of KAVACH:- It has a set of electronic devices and Radio Frequency Identification (RFID) devices installed in locomotives, in the signalling system as well as the tracks. (UPSC CSE: RFID) These connect to each other using ultra-high radio frequencies to control the brakes of trains. It also alerts drivers, all based on the logic programmed into them. (UPSC MAINS: KAVACH) It is a Safety Integrity Level 4 (SIL-4) certified technology. Safety Integrity Level (SIL): it comes from two voluntary standards used by plant owners/operators to quantify safety performance requirements for hazardous operations. There are four SIL Levels (1-4). A higher SIL Level means a greater process hazard and a higher level of protection. KAVACH is the world’s cheapest automatic train collision protection system. Initial development of Kavach started in 2012 under the name Train Collision Avoidance System (TCAS) and completed development on 2022. First successful trial: between Gullaguda–Chitgidda Railway stations of South Central Railway in 2022. The Budget of 2022-23 had proposed rollout of Kavach in 2000 kms. Salient features:- Automatic activation of the train braking system if the driver fails to control the train speed. Preventing collision between two Locomotives equipped with a functional KAVACH system. Sending continuous updates of Movement. (UPSC CSE: Mobile Train Radio Communication (MTRC) ) Auto Whistling while approaching Level Crossing Gates Sending SoS Messages during emergency situations. Centralised live monitoring of train movements through the Network Monitor System. MUST READ: Vande Bharat 2.0 SOURCE: BUISINESSLINE PREVIOUS YEAR QUESTIONS Q.1) Consider the following communication technologies: (2022) Closed-circuit Television Radio Frequency Identification Wireless Local Area Network Which of the above are considered Short-Range devices/technologies? 1 and 2 only. 2 and 3 only 1 and 3 only 1, 2 and 3 Q.2) In India, the term “Public Key Infrastructure” is used in the context of (2020) Digital security infrastructure Food security infrastructure Health care and education infrastructure Telecommunication and transportation infrastructure Pet coke Syllabus Prelims –Geography, Environment and Ecology Context: The Government recently, permitted the import of pet coke as a raw material for lithium-ion batteries. About Pet Coke:- IMAGE SOURCE: bulkcarrierguide.com Pet Coke is one of the industrial by-products produced during oil refining. It is dark solid carbon material. It is used as a source of energy and carbon for various industrial applications. It is abundantly used in India in several manufacturing industries such as cement, steel and textile. It is significantly cheaper than coal, has high calorific value and is easier to transport and store. There are two kinds of pet coke produced during oil refining viz. Fuel-grade pet coke (80%) and Calcined pet coke (20%). India is the world’s biggest consumer of pet coke. (UPSC CSE: Strategic Petroleum Reserves (SPR) ) Local producers: Indian Oil Corp, Reliance Industries and Bharat Petroleum Corp. Cement companies in India account for about three-fourths of the country’s pet coke use. Environment and Health Hazards of Pet Coke:- Pet coke is a much more potent pollutant than coal. It contains a whopping 74,000 PPM of sulphur content, which is released into the atmosphere as emissions, which is much higher than vehicular emissions. It is also a source of fine dust, which can get through the filtering process of the human airway and lodge in the lungs, which can cause serious health problems. It releases sulphur, nitrous oxide, mercury, arsenic, chromium, nickel, and hydrogen chloride, which contribute to global warming. (UPSC CSE: COP 27). Lithium It is a soft, silvery-white metal. It is the lightest metal and the lightest solid element. It has the highest specific heat capacity of any solid element. It is a good conductor of electricity. It is flammable and can even explode when exposed to air and water. Lithium is a crucial building block of the lithium-ion rechargeable batteries. Currently, India is heavily dependent on import of these cells and the move to ink sourcing pacts for lithium is seen as a move to reduce its dependency on China, which is a key source of both the raw material and cell. Lithium-ion batteries A lithium-ion battery or Li-ion battery is a type of rechargeable battery. Working: Li-ion batteries use an intercalated (Intercalation is the reversible inclusion or insertion of a molecule into materials with layered structures) lithium compound as one electrode material. The battery consists of electrolyte, which allows for ionic movement, and the two electrodes are the constituent components of a lithium-ion battery cell. Lithium ions move from the negative electrode to the positive electrode during discharge and back when charging. Applications:- Power electric vehicles (EVs), laptops and mobile phones. Applications in electronic gadgets, Telecommunication, Aerospace, Industries. Power source for electric and hybrid electric vehicles. Advantages of Li-Ion battery:- It is light weighted and is one-third the weight of lead acid batteries. It is nearly 100% efficient in both charging and discharging as compared to lead battery, which has 70% efficiency. It completely discharges i.e. 100% as compared to 80% for lead acid. It has life cycle of 5000 times or more compared to just 400-500 cycles in lead acid. It also maintains constant voltage throughout entire discharge cycle whereas voltage in lead acid battery drops consistently throughout its discharge cycle. It is much cleaner technology and is safer for environment. It can be wireless. Disadvantages of Li-ion Batteries:- Long charging times. Safety issues: instances of batteries catching fires have been
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