Opinion
Matters ‘COPE’ overlooked
Browsing the internet, before commenting on Dr. Janaka Ratnasiri’s above captioned article, to update myself on what the future holds on coal power generation, as a preamble or a prelude, I came across the following:
“While the amount of electricity generation from coal has declined in recent years, in part due to the rising accessibility of renewable sources of energy, the coal power industry has continued to build new coal-fired generation plants at a rapid pace. The global installed coal power generation capacity is projected to be on the rise over the next decades and predicted to reach a capacity of over 2.2 terawatts in 2050. As of 2019, China had the highest installed capacity from its Coal Power Plants amounting to about 1,005 gigawatts in total. The United States comes distant second with over 246 gigawatts of coal power plant capacity, followed by India at about 229 gigawatts.”
At the same time, there is encouraging news that China has carried out extensive research in converting coal to ‘Clean Coal’, to facilitate the use of coal in an environmentally satisfactory and economically viable way, with clean coal technologies. China has made remarkable progress in this and Clean Coal technologies have now entered into commercialization in stages.
It should also be admitted that 100 percent reliance cannot be kept in renewable sources, specially the major components being Solar and Wind due to vagaries of climate. Developed countries such as Germany have standby Coal plants to meet any short-fall in energy.
Coming to Dr. Janaka Ratnasiri’s reference to Fly Ash, Fishing and diseases, it is considered appropriate to quote what the internationally famed consultants on Coal Power Plants – Ramboll of Denmark, appointed on Norochcholai Coal Plant-had said in their report, for the information of those who have had no access to this document.
Impact from Fly Ash
To the extent at all possible will be recycled and reused in, for example the cement production and brick production just as fly ash under the right conditions can be reused in road construction or similar. However, the bottom ash and possibly part of the fly ash from the electrostatic precipitators as well can be reused. Therefore, an ash disposal site will be constructed inside the coal power plant. The design includes a low permeability bottom liner sloped towards sump pits. The leachate is collected in a sedimentation pond. The clarified water can be used for dust control. The design of the fly ash deposit lives up to modern recommendations for design of similar waste deposits. The consultant is, therefore, convinced that these measures will provide the necessary prevention of the ground water resource.
The environmental viability of ash recycling in the construction industry is given by the prevailing practice in numerous countries of the world, where ash from coal-fired coal plants is recycled in the industry. Trace elements are not considered an issue that valuable fly ash shall not be used for such applications. In these countries, very often demand for such fly ash exceeds the supply. The small amounts of [ignition oil] contaminated ash will not be recycled, but dumped into the ash landfill. It would be unwise not to recycle a maximum of non-contaminated and reusable fly ash.
Sulphur Emission and Particulate Emission
Based on combustion calculations for the selected boiler design and a range of possible coal types, the limiting coal type with respect to sulphur content has been selected. This will have a maximum sulphur content of 0.65 % and a sulphur/HHV ratio of less than 0.11% per kcal/kg. When coal of this type or with less sulphur is burned, the smoke emission from the stack should be according to the national standards, and no flue gas desulphurisation plant [FGD] is required.
As regards NO2 the plant design ensures emission below the required levels and the dispersion simulations show low concentrations of 15 to 30% of the maximum levels for all operational scenarios.
As for Particulate Emission the report says, “The concentration levels in the air at the areas surrounding the plant have been obtained through atmospheric dispersion simulation. The outcome was that the resulting concentrations will be only a small fraction [3-4%] of the allowable maximum. As such, the smoke emitted will be almost without dust, which is often seen from a modern power plant, where the smoke escapes from the stack with a little content of water vapour. The vapour spreads in the air within a short distance from the stack, and hereafter the emission is completely invisible’
Impact on Fishing
The cooling water system will be dosed with hydrochlorite [to a final concentration of 3-4 ppm] for 20 to 30 minutes every six hours. The dosing is required to avoid microbial growth within the cooling system. The hypochlorite treated water is diluted at the same rate as the heat. This means that the dilution will be about five times within the near vicinity of the outlet [Equal to temperature decreasing from 7 o to 1.5 o C]. It is also demonstrated that significant dilution will occur further down-stream of the plant. Any chloro-amines formed by the action of hypochlorite and ammonia, will similarly be diluted to an immeasurable concentration. It is concluded in the EIA that the small area affected by the discharged cooling water will have no adverse effect on the coastal fish population and the coastal fishing economy.
Diseases
In the preparation of this report on Norochcholai Coal-fired Plant, the Consultants have met the people of the area and to a question posed, the consultants had replied ‘The planned coal fired power plant will meet the ambient air quality standards which were set so as not to harm people, animals and environment. Consequently, there will be no fear of tuberculosis, cancer or any other disease induced by the coal fired power plant’.
In conclusion it should be said that the efficient working of the Coal Plant is left in the hands of the operators to adhere meticulously, to the recommendations made by the consultants, else sporadic outbursts may crop up from the inhabitants of the area, mostly comprising of fishermen, and those small scale farmers.
G. A. D. SIRIMAL
Boralesgamuwa
Opinion
Losing Oxygen
The ability of expressing our fundamental right to breathe clean air is over. The Global Commons of air is rapidly being impacted, in addition to an increase in the concentration of Carbon Dioxide and a decrease in Oxygen concentration. The concentration of toxic gasses and airborne particulate matter in the atmosphere is increasing. While a global compact on the quality of air as a fundamental right, is urgent consideration of its impact on health must also become a matter of concern. he most essential thing for our existence is the ability to breathe. The air that we take for granted is like an invisible river of gasses considered a part of the ‘Global Commons’ or those resources that extend beyond political boundaries. The Commons of air is composed of a mix of gasses, the dominant being Nitrogen at about 78%, followed by Oxygen at 21%. Carbon Dioxide that is contributing to climate change accounts for only 0.04% and demonstrates how small changes in the concentration of gasses in the atmosphere can bring about massive changes to those that live in it.
The Oxygen component of the air we breathe was made by those earliest plants, the Bryophytes, which colonized land from 470 Ma onwards. This land colonization increased atmospheric oxygen to present levels by 400 Ma. The fire-mediated feedbacks that followed have stabilised high oxygen levels ever since, shaping subsequent evolution of life. Oxygen is the most crucial element on earth for the aerobic organisms that depend on it to release energy from carbon-based macromolecules. The current stocks have been maintained over millions of years by plants, terrestrial and oceanic. To sustain a gaseous concentration at around 21% of the air we breathe. This level is required to maintain a healthy body and mind. A lowering of this concentration has consequences. At 19% physiologically adverse effects begin. Impaired thinking and attention, reduced coordination, decreased ability for strenuous work is experienced, at 15% Poor judgment, faulty coordination, abnormal fatigue upon exertion, emotional upset Levels below this lead not only to very poor judgement and coordination but also impaired respiration, lung and heart damage. The question often arises: ‘If the atmospheric Oxygen concentration is 21% how can it vary so widely in different areas ? The answer is that ‘when you add other gasses, smoke and aerosols into the atmosphere, the concentration of atmospheric gasses will decrease in concentration. In some cities like New Delhi or Mexico have Oxygen concentrations measured at about 18% or lower.
There has been a clear decline in the volume of oxygen in Earth’s atmosphere over the past 20 years. Although the magnitude of this decrease appears small compared to the amount of oxygen in the atmosphere, it is difficult to predict how this process may evolve, due to the brevity of the collected records. A recently proposed model predicts a non-linear decay, which would result in an increasingly rapid fall-off in atmospheric oxygen concentration, with potentially devastating consequences for human health.
The free Oxygen in the atmosphere is 1.2×1015 tonnes (12,000,000,000,000,000 t), but it is unstable in our planet’s atmosphere and must be constantly replenished by photosynthesis in green plants. Without plants, our atmosphere would contain almost no O2. An important thing that needs international address is the fact that the system that replenishes the Oxygen of our atmosphere is under threat. We remove the vegetation that produces the Oxygen at a prodigious rate. According to Global Forest Watch we fell about 15 billion trees each year. With one tree one tree producing about 120Kg of Oxygen per year, the loss of Oxygen production through deforestation is massive. The impact on the oceans is becoming just as serious.
As human activities have caused irreversible decline of atmospheric O2 and there is no sign of abatement, It is time to take actions to promote O2 production and pay for industrial use and consumption of O2. Vehicular traffic in cities with poor air flow design transforms molecular oxygen O2 into Ozone O3. Ozone is good when it is high up in our atmosphere. It protects us from sunburn. Ozone is bad when it is near the ground where we can breathe it in. You can’t see ozone in the air but bad ozone levels is sometimes called smog. It is formed when chemicals coming out of cars and factories are cooked by the hot sun. Breathing in ground-level ozone can make you cough. It can also make it harder for you to breathe. Ozone might even make it hurt to take a breath of air. When you breathe in ozone, it makes the lining of your airways red and swollen, like your skin would get with a sunburn.
All this becomes even more pressing with the discovery of the “human oxidation field” a beneficial chemical microenvironment formed around the body’s surface that helps protect it from volatile organic compounds (VOCs). This field is generated by the reaction of ozone with oils and fats on our skin, especially the unsaturated triterpene squalene, which constitutes about 10 percent of the skin lipids that protect our skin and keep it supple. The reaction releases a host of gas phase chemicals containing double bonds that react further in the air with ozone to generate substantial levels of OH radicals. As the Ozone levels as in cities rise, the individual ‘human oxidation field’ looses its ability to maintain skin health.
In looking at the question of why there was such a rapid loss in the quality of air, the first study to systematically analyse the global O2 budget and its changes over the past 100 years, found that anthropogenic fossil fuel combustion is the largest contributor to the current O2 deficit, which consumed 2.0 Gt/a in 1900 and has increased to 38.2 Gt/a by 2015.
The inability to defend our fundamental right to breath seems to stem from the ability of any industry to discount the consequences of burning fossil fuels as a ‘negative externality’. Climate Change is one consequence, but the impact that lowered Oxygen concentrations will have on emerging urban populations seem disturbing. There is only one way to arrest the fall in atmospheric Oxygen, increase the rate of photosynthesis. There must be a protection of the existing stocks of photosynthetic biomass and programs that encourage increasing the standing stock of Oxygen to be able to sustain our fundamental right to breathe clean air.
by Dr. Ranil Senanayake
Opinion
Appreciation: Upali Tissa Pieris Seneviratne
My brother, close on two years senior to me, was into sports – cricket, football, and athletics were his favourites. We were at De Mazenod College for our primary schooling, moved apart thereafter – he to Ananda College which had hosted all our male relatives from our father and his brothers, our mother’s brothers and all our male cousins on either side, while I was sent to Royal. He moved, thereafter, to the Royal Post-Primary which turned into Thurstan College.
There he distinguished himself at cricket and, together with his captain, Brindley Perera, provided the runs. He also had the distinction of being the first at Thurstan to pass the SSC examination. At that point he returned to De Mazenod where he won, what was called, the Senior Proficiency Prize, captained the cricket eleven, and was the senior athletics champion.
That last was witnessed by the district head of the Police and led to his being rapidly drawn into the Police force.
Following initial training at Katukurunda the new recruits were posted to distant Police Stations as Sub-Inspectors. He had spells in the Hiniduma area and in Galenbindunuweva, off Anuradhapura.
It was while he served at Anuradhapura itself that he met with an accident that almost took his life. He came out of that with a limp.
That did not prove to be a substantial handicap and he served with distinction in Kosgoda and other stations on the south western coast before he was moved to the CID. There he played a major role in solving what came to be known as ‘the Kalattawa Case’, which led to the arrest and due punishment of a wealthy producer of illicit booze – a man who had ‘pocketed’ a good many public servants who were entrusted with the enforcement of the law.
In the early 1970s, he was entrusted with investigations related to the activities of a group of agents of Lankan and foreign right-wing politics, which called itself ‘the JVP’. Among those he had arrested was a colleague of mine, Susil Siriwardena, who later managed to secure a show of incarceration in a Ward at the General Hospital (where the only luxury he enjoyed was access to some books). In due course, many years later, President Premadasa, besides other responsibilities imposed on him, related to his initiatives in Village Reawakening (Gam Udawa), put Susil in charge of the Janasaviya programme.
It is a pity that my brother and fellow officers have not placed on record their experience of that ‘April Insurgency’.
My brother served with distinction in both the CID and the CDB. When Lalith Athulathmudali was in charge of Internal Security, in the late 1970s, my brother was seconded for service in that Ministry as Director of Training. The Secretary was Denis Hapugalle, who was an Army man – and their approach to ‘training’ differed. After a year or two, Upali reverted to the Police and took early retirement to set up a Security service that served several Mercantile establishments for over 30 years.
He contributed much to the development of the Police retired senior officers organisation, which he served for many years as its Secretary and its President.
He was the most generous of men and gifted with a sense of humour that he would have inherited from our father. May he reach the bliss of Nirvana!
D G P (Gamini) Seneviratne
Opinion
Archaic rules affecting bank customers
At present, there is a rule in (state-owned) commercial banks that prevents individuals from opening accounts if they reside in an area different from the address stated on their National Identity Card (NIC). The justification offered is that this helps prevent money laundering and the handling of illicit funds.
However, one must question the logic of this rule. How exactly does it stop such individuals? A person with ill intentions could just as easily open an account in the area mentioned on their NIC. Moreover, even if there are, say, one lakh fraudsters in the country, this rule effectively imposes restrictions on twenty lakh genuine citizens — penalising the many for the misdeeds of a few. How fair is that, and how does it encourage people to save and participate in the formal banking system?
The government constantly speaks about digitalisation and technological advancement, yet continues to tolerate outdated and impractical regulations like this.
Consider another case: a customer of a state bank urgently needed to encash a fixed deposit opened at a distant branch. When he approached the branch near his current residence, he was told to visit the original branch, as that branch must physically receive the original FD certificate upon encashment. One wonders what is the use of highly paid branch managers, fax machines, emails, and even WhatsApp, if two branches cannot coordinate to resolve such a simple issue?
Unfortunately, the customer has to travel 200 km to reach the original branch.
If the government truly wishes to build a modern, technologically advanced financial system, it must first eliminate such archaic rules and adopt smarter, technology-driven safeguards against fraudsters — without punishing honest citizens in the process.
A Ratnayake
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