Regulations on radioactive material production may need to be amended to better address public safety, the Atomic Energy Council (AEC) said yesterday after it admitted that radiation levels had increased slightly at National Tsing-hua University (NTHU).
The university-operated radioactive medicine plant changed an ingredient in its production process, causing radiation levels nearby to increase.
“In the most recent routine radiation test, the AEC found that in nearby plants, dust and floating particles near NTHU’s iodine-131 production plant, the content of radioactive iodine had increased,” AEC Department of Radiation Protection deputy director Liu Wen-si (劉文熙) said.
In previous routine checks, iodine-131 would sometimes be found in one of the three samples — plants, dust or air particles — but the last test revealed that all three samples contained iodine, Liu said.
“The council was unaware at first that the production process had been changed … but NTHU later informed us that in an effort to increase production, the school had changed one of the ingredients,” Liu said.
The change in ingredients did not need to be approved by the council as the law does not regulate the ingredients that plants can use in their production, Liu said.
When asked why the change of an ingredient would cause such an incident, Liu said that the school told the AEC that the change induced a pH shift in the process, but he did not know the exact reaction involved because it concerned medical chemistry.
The potential danger did not evolve into a full-fledged hazard as the increase was slight and within the regulated amount. As such, the AEC has asked the school to formulate a plan to improve upon the situation within 14 days, Liu said.
Asked whether NTHU had violated radiation management regulations by implementing such a change, Liu said: “At the moment, we are not ruling that the school violated the regulations.”
“While the procedure of such a production process is regulated by the council, the laws don’t regulate the types of ingredients used … it would be too harsh to say that NTHU had violated regulations,” Liu said.
Iodine-131 is mainly used to treat thyroid cancer, Liu said.
“Because iodine naturally accumulates in the thyroid when absorbed, the radiation in the iodine can kill cancerous cells,” he said.
However, if excessive amounts of the material is released and absorbed by humans, the iodine will similarly accumulate and damage thyroid cells in healthy people, he said.
NTHU dean of research and development Lin Youn-long (林永隆) yesterday told the Taipei Times that it was “incorrect” to describe the incident as a “leak.”
Iodine is produced in a laboratory chamber and during the process, some gaseous iodine would be released into the air after being filtered through carbon, Lin said.
Scientists need to test the nearby environment to make sure the level of iodine does not exceed the council’s maximum safety standard, Lin said.
Lin said the level of iodine at the school would “fluctuate,” but it never exceeded the council’s standards. He also said that the council had warned the school of a “rising tendency” lately.
When asked if the tendency was a result of changes in the production process, Lin said he could not detail the process, but that “it was necessary for the production process to change and improve over time.”
He assured the public that the school would do regular inspections of the level of iodine.
NTHU Center for Nuclear Science and Technology Development director Chou Feng-ying (周鳳英) was unavailable for comment.
ADDITIONAL REPORTING BY FLORA WANG
An increase in Taiwanese boats using China-made automatic identification systems (AIS) could confuse coast guards patrolling waters off Taiwan’s southwest coast and become a loophole in the national security system, sources familiar with the matter said yesterday. Taiwan ADIZ, a Facebook page created by enthusiasts who monitor Chinese military activities in airspace and waters off Taiwan’s southwest coast, on Saturday identified what seemed to be a Chinese cargo container ship near Penghu County. The Coast Guard Administration went to the location after receiving the tip and found that it was a Taiwanese yacht, which had a Chinese AIS installed. Similar instances had also
GOOD DIPLOMACY: The KMT has maintained close contact with representative offices in Taiwan and had extended an invitation to Russia as well, the KMT said The Chinese Nationalist Party (KMT) would “appropriately handle” the fallout from an invitation it had extended to Russia’s representative to Taipei to attend its international banquet last month, KMT Chairman Eric Chu (朱立倫) said yesterday. US and EU representatives in Taiwan boycotted the event, and only later agreed to attend after the KMT rescinded its invitation to the Russian representative. The KMT has maintained long-term close contact with all representative offices and embassies in Taiwan, and had extended the invitation as a practice of good diplomacy, Chu said. “Some EU countries have expressed their opinions of Russia, and the KMT respects that,” he
AMENDMENT: Contact with certain individuals in China, Hong Kong and Macau must be reported, and failure to comply could result in a prison sentence, the proposal stated The Chinese Nationalist Party (KMT) and the Taiwan People’s Party (TPP) yesterday voted against a proposed bill by Democratic Progressive Party (DPP) lawmakers that would require elected officials to seek approval before visiting China. DPP Legislator Puma Shen’s (沈伯洋) proposed amendments to the Act Governing Relations Between the People of the Taiwan Area and the Mainland Area (臺灣地區與大陸地區人民關係條例), stipulate that contact with certain individuals in China, Hong Kong and Macau should be reported, while failure to comply would be punishable by prison sentences of up to three years, alongside a fine of NT$10 million (US$309,041). Fifty-six voted with the TPP in opposition
VIGILANCE: The military is paying close attention to actions that might damage peace and stability in the region, the deputy minister of national defense said The People’s Republic of China (PRC) might consider initiating a hack on Taiwanese networks on May 20, the day of the inauguration ceremony of president-elect William Lai (賴清德), sources familiar with cross-strait issues said. While US Secretary of State Anthony Blinken’s statement of the US expectation “that all sides will conduct themselves with restraint and prudence in the period ahead” would prevent military actions by China, Beijing could still try to sabotage Taiwan’s inauguration ceremony, the source said. China might gain access to the video screens outside of the Presidential Office Building and display embarrassing messages from Beijing, such as congratulating Lai