Can chrysotile cause exposion?

Mr. Nguyen Manh Hung, Vice President and General Secretary of Vietnam Standard and Consumers Association, stated on VOV Online Discussion aired from 14:00 to 16:00 on April 25th 2015 that: “Chrysotile caused an explosion in Hanoi”.

Which countries are currently allowing the use chrysotile in production?

At present, there are 57 countries worldwide prohibit the use of asbestos while 147 countries and territories allow the use of chrysotile and products containing chrysotile. Those countries are G8 countries: the United States of America, Canada, Russia, and Mexico, Brazil, Ukraine, Kazakhstan, Kyrgyzstan, Uzbekistan, China, India, Thailand, Indonesia, Vietnam, etc.

Which types of products are currently using chrysotile as an input?

At present, there are about 3,000 existing products made from chrysotile and chrysotile is used in manufacturing roof covering materials, textile, plastic, rubber, stove’s doors, material to cover holes in high-temperature area, paper, army’s equipment, national security and nuclear power industry, etc.

Is there any convincing evidence showing that “every 170 tons of asbestos consumed, there is one case of mesothelioma”?

One kilogram of asbestos increases the risk of mesothelioma by 2.4 times. For every 170 tons of asbestos consumed, there is one case of mesothelioma. – Dr. Pham Duc Phuc (Vietnam Public Health Association) spoke in the Conference on Scientific grounds to protect public health against asbestos’ harmful effect (December 23rd 2014) organized by EBHPD (a member of VN-BAN), VIHEMA, Vietnam Public Health Association (VPHA), Oxfam’s Allies Support Program and WHO.

“Drinking water from fibro-cement roofing sheet leads to cancer. People living under chrysotile roofing sheets take risks of cancer because of drinking and using water from them”. Is it true?

It is unlikely that asbestos is scattered to water leaked from the roofing sheets due to the hollow structure of chrysotile. When it is mixed with cement, cement fills hollows inside fibers to create a solid structure between fiber and cement, from which it is very difficult for asbestos to be emitted (only except for the case of drilling and boring). Indeed, scientific studies have proven this fact.

There is no safe threshold of exposure to asbestos fibre so to any extent of exposure, even very low, people may still contract cancer. Accordingly, the most efficient way to eliminate asbestos-related diseases is to stop using all types of asbestos. Is it true?

Many scientific studies showed that there was no increase in the cancer risk with controlled exposure to chrysotile of 1 fiber/mL. Most countries using chrysotile regulate the permissible dust concentration. For instance, permissible airborne asbestos dust concentration is 0.1 f/cm3 in the US, 1.0 f/cm3 in Canada, 0.15 f/cm3 – 0.5 f/cm3 in EU countries, 2.0 f/cm3 in Philippines, 1.0 f/cm3 in Indonesia, 5.0 f/cm3 in Thailand and 1.0 f/cm3 in Vietnam.