Mission Accomplished: Sunita,Akihiko tackle ISS coolant leak

November 2, 2012

mission

Houston, November 2: Indian American record-setting NASA astronaut Sunita Williams along with another cosmonaut today troubleshot an ammonia leak in the International Space Station's cooling system, accomplishing the chief objective of their marathon six-hour excursion outside the orbiting lab.

Williams and Japanese space flyer Akihiko Hoshide ventured yesterday outside the space station at 1229 GMT (1759 IST) and just a little more than five hours later, they had reconfigured some coolant lines and deployed a spare radiator, isolating the leak.

"Suni and Aki, heartfelt congratulations to you," NASA astronaut Mike Fincke, who helped walk the astronauts through their tasks from mission control at the agency's Johnson Space Center in Houston, said at 1741 GMT (2311 IST).

"We accomplished just about everything we set out to do today. A big, huge congratulations to you guys on the ground for putting this together," Williams responded.


Each of the space station's eight huge solar panels has its own associated power system, and circulating ammonia helps cool this gear down.

The leak, which NASA and its space station partners first noticed in 2007, has the potential to affect one of these power channels if it's not fixed.

Today's Spacewalk, or extra-vehicular activity (EVA), a crucial step in that process was slated to last about 6 1/2 hours, and it proceeded pretty much on schedule.

By 0128 hrs IST, both astronauts had re-entered the space station through its airlock, and the spacewalk was officially over nine minutes later.

At the start of the spacewalk, Williams — commander of the station's current Expedition 33 — and Hoshide made their way over to the port side of the station's backbone-like truss.

They rejiggered some lines in the affected coolant system and installed a spare radiator.

NASA officials hope this stops the leak, which they suspect may be coming from the old (swapped-out) radiator.

If ammonia continues to escape, the station's operators will eventually have to try something else.

But there likely won't be an urgent need for a new fix, since the spare radiator should provide enough ammonia to keep the coolant system operating until next October or so, officials said.

It should come as no surprise that Williams and Hoshide ticked off their tasks efficiently today, for the two are seasoned space walkers.

In late August and early September, they replaced a vital power unit on the station over the course of two spacewalks, defeating an unexpectedly stubborn stuck bolt in the process.

Today's EVA was the seventh for Williams, the third for Hoshide and the 138th to depart from the station overall.




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News Network
February 19,2020

Beijing, Feb 19: The death count from China's new coronavirus epidemic jumped to 2,000 on Wednesday after 132 more people died in Hubei province, the hard-hit epicentre of the outbreak.

In its daily update, the province's health commission also reported 1,693 new cases of people infected with the virus.

This brings the total number of cases in mainland China past 74,000.

Most of the cases are in Hubei, where the virus first emerged in December before spiralling into a nationwide epidemic.

Wednesday's jump in the death count was an increase on Tuesday's figures, although the number of new cases reported in Hubei were the lowest for a week.

A study released by Chinese officials claimed most patients have mild cases of the illness.

Outside of hardest-hit Hubei, which has been effectively locked down to try to contain the virus, the number of new cases has been slowing and China's national health authority has said this is a sign the outbreak is under control.

President Xi Jinping, in a phone call with the British prime minister, said China's measures were achieving "visible progress", according to state media Tuesday.

However, the World Health Organization has cautioned that it was too early to tell if the decline would continue.

On Tuesday the director of a hospital in the central Hubei city of Wuhan became the seventh medical worker to succumb to the COVID-19 illness.

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News Network
May 21,2020

Washington, May 21: US President Donald Trump China is on a "massive disinformation" campaign and is desperately trying to deflect the "pain and carnage" that it spread throughout the world, US President Donald Trump has said, upping the ante on Beijing over its handling of the coronavirus outbreak.

Trump, who has expressed disappointment over China's handling of the COVID-19 pandemic, claimed that it was the "incompetence" of Beijing that led to the mass killing across the globe. 

"China is on a massive disinformation campaign because they are desperate to have Sleepy Joe Biden win the presidential race so they can continue to rip-off the United States, as they have done for decades, until I came along!" Trump said in a tweet on Wednesday.

"Spokesman speaks stupidly on behalf of China, trying desperately to deflect the pain and carnage that their country spread throughout the world. Its disinformation and propaganda attack on the United States and Europe is a disgrace… It all comes from the top. They could have easily stopped the plague, but they didn't," he said in a series of tweets.

Trump blamed China for spreading the coronavirus globally and accused it of being incompetent.
"Some wacko in China just released a statement blaming everybody other than China for the Virus which has now killed hundreds of thousands of people. Please explain to this dope that it was the 'incompetence of China', and nothing else, that did this mass Worldwide killing!" Trump said.

China has denied covering up the extent of its coronavirus outbreak and accused the US of attempting to divert public attention by insinuating that the virus originated from a virology laboratory in Wuhan.

"China was the first country to report the COVID-19 to the World Health Organisation (WHO), (and) that doesn't mean the virus originated from Wuhan... There has never been any concealment, and we'll never allow any concealment," Chinese Foreign Ministry spokesman Zhao Lijian said last month.

"A discerning person will understand at a glance that the purpose is to create confusion, divert public attention, and shirk their responsibility," he said.

The novel coronavirus which first originated in Wuhan in December last year has claimed 328,120 lives and infected nearly 5 million people globally. The Us is the worst affected country with 93,439 deaths and over 1.5 million infections, according to Johns Hopkins University data.

Meanwhile, the US Senate passed a bill boosting oversight of companies based in China and other nations that could lead to their removal from American stock exchanges.

The Holding Foreign Companies Accountable Act, proposes to increase oversight of Chinese and other foreign companies listed on American exchanges and delist and ban over-the-counter trading for firms that are out of compliance with US regulators for a period of three years.

In a related development, a group of top Republican Senators led by Marco Rubio sent a letter to Secretary of the Treasury Steven Mnuchin following disturbing reports that China's state-owned and-directed enterprises were looking to exploit the economic crisis by buying US and foreign companies.

As companies backed by the Chinese Communist Party (CCP) approach banks to identify the purchase of companies in the US and in Europe affected by the pandemic, the senators urged Mnuchin to protect against the China's and the CCP's predatory economic behaviour during the COVID-19 crisis.

"We write to express our concerns related to the People's Republic of China's (PRC) efforts to exploit the economic crisis wrought by the COVID-19 pandemic to gain control of distressed companies or shirking its international responsibilities amidst a worldwide crisis.

"In both Chinese Communist Party (CCP) and PRC policy documents, Beijing has made no secret of its intentions to dominate strategic industrial and emerging technology sectors as well as influence standards at the expense of liberal, rules-based governance," wrote the senators.

As the crisis reverberates across the globe, the PRC's predatory lending practices — including the use of non-disclosure agreements for bilateral loans — not only damage the fiscal situation of recipient countries but also undermine the international community's ability to respond effectively to the crisis, they said.

"Without US and international pressure for accountability and transparency, those countries that are in debt to the PRC will not have the political cover or protection to open their financial books. Such countries will face the risk of default or a currency crisis, leaving the International Monetary Fund (IMF), World Bank, and Western countries to clean up the PRC's mess," the senators said.

During a campaign round table Katrina Pierson, Senior Advisor to the Trump 2020 Campaign, said that only the US President will defeat the coronavirus, hold China accountable for their negligence, and defend the American people from socialism. 

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News Network
June 10,2020

Islamabad, Jun 10: The World Health Organization has told Pakistan it should implement "intermittent" lockdowns to counter a surge in coronavirus infections that has come as the country loosens restrictions, officials said.

Since the start of Pakistan's outbreak in March, Prime Minister Imran Khan opposed a nationwide lockdown of the sort seen elsewhere, arguing the impoverished country could not afford it.

Instead, Pakistan's four provinces ordered a patchwork of closures, but last week Khan said most of these restrictions would be lifted.

Health officials on Wednesday declared a record number of new cases in the past 24 hours. The country has now confirmed a total of more than 113,000 cases and 2,200 deaths -- though with testing still limited, real rates are thought to be much higher.

"As of today, Pakistan does not meet any of the pre-requisite conditions for opening the lockdown", the WHO said in a letter confirmed by Pakistan officials on Tuesday.

Many people have not adopted behavioural changes such as social distancing and frequent hand-washing, meaning "difficult" decisions will be required including "intermittent lockdowns" in targeted areas, the letter states.

Some 25 percent of tests in Pakistan come back positive for COVID-19, the WHO said, indicating high levels of infection in the general population.

The health body recommended an intermittent lockdown cycle of two weeks on, two weeks off.

Responding to the WHO's letter, Zafar Mirza, the prime minister's special advisor for health, said the country had "consciously but gradually" eased lockdowns while enforcing guidelines in shops, mosques and public transport.

"We have to make tough policy choices to strike a balance between lives and livelihoods," Mirza said Wednesday.

Punjab's provincial health minister Yasmin Rashid, who received the WHO's letter, said the provincial government had already given "orders to take strict action against those violating" virus guidelines.

Hospitals across Pakistan say they are at or near capacity, and some are turning COVID-19 patients away.

WHO Director-General Tedros Adhanom Ghebreyesus said Monday that 136,000 cases had been reported in the previous 24 hours, "the most in a single day so far", with the majority of them in South Asia and the Americas.

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