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China get back in the plasterboard innocence

Author锛歮icheal Date锛11/1/2010 8:25:56 PM

The U.S. government, which took two years of study that found no evidence that China plasterboard can cause safety and health risk, the plasterboard no obvious difference. Once the American media speculation an uproar in the "problem China plasterboard events & rdquo

The U.S. government, which took two years of study that found no evidence that China plasterboard can cause safety and health risk, the plasterboard no obvious difference. Once the American media speculation an uproar in the "problem China plasterboard events" finally have the verdict, plasterboard is not need to be as "problem plasterboard" by replacement.

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Four of the five lessons HuiShen report

 

September 15,, the United States the consumer products safety commission group released four of the latest research report, the plasterboard that no obvious difference, and no evidence that plasterboard can cause safety and health concerns. The four report including the latest "fire control problem report", "microbial research report" and "metal corrosion research report" and "indoor air testing phase ii report".

 

Among them, the national institute of standards and technology of fire control problem released study reported that, in accordance with the recognised the industry standard, the so-called problem plasterboard does not exist fire hazard. The main investigation of the plasterboard can be family influence the safety of life the corrosion of metal parts, including three key parts: one is the natural gas pipeline metal components of integrity, and the second is the smoke alarm work, three is fire shower nozzle should be of components of the thermal performance.

 

Test and analysis show that use plasterboard family of metal components do not exist gas pipeline of corrosion damage to cause fire or explosion. Metal components in high temperature humidity conditions, with air in similar conditions of aging 40 years later, and no significant corrosion damage, no evidence that alloy component of stress corrosion crack, pitting corrosion or crevice corrosion, and translated into potential natural gas leaks. In the test and analysis, no evidence that exposure to plasterboard environment or simulation of the gas pipeline corrosive environment alloy component increases the risk of fire. Therefore, the United States the consumer products safety commission staff Suggestions plasterboard need not as "problem plasterboard" be replaced.

 

Sandia bid national laboratory will smoke alarm, electric components, gas pipeline and fire sprinkler exposure to can represent problems do high concentrations of gas released wall situation, simulation decades of exposure. The laboratory analysis the electrical components corrosion in effect, during the tests did not find the function of the components of degradation and serious security hidden danger.

 

The latest release the report from the microorganism of the usgs responsible. The United States the consumer products safety commission investigated at home and abroad and the presence of gypsum mine plasterboard sulfate reducing bacteria, if present, bacteria produce or stored in gypsum mine in the manufacture of plasterboard produces in the process. The department issued in the reflection of fluorescence microscope quantitative polymerase chain reaction monitoring at home and abroad in the sample plasterboard the presence or absence of microorganism and identify report said, not in the plasterboard (including affected house samples) sulfur gases found in release of microbial activity or microbial sources of evidence. The usgs also analyzed the 12 plasterboard of samples of sulfate reducing bacteria, think through the experiment can't support the United States some research institutions have put forward "sulfate reducing bacteria in the problems existing in the plasterboard active" view.

 

"The problem plasterboard" no problem

 

As part of the problem plasterboard survey, the United States the consumer products safety commission entrust Lawrence Berkeley national laboratory samples of plasterboard chemical gas emissions test. Released from the problems of sulfide gas emissions dry wall the environment factors influence report have showed that activity sulfur emissions rate relative to about a year ago published data down 3 to 14 times, complaint family and as the samples in the homes of the contrast of the overall total sulfur gases any different.

 

As part of the investigation, the United States the consumer products safety commission asked the U.S. centers for disease control and prevention to consider the possible existence of long-term health impact on comprehensive study. In February, the latter have issued a number of problems with the complaint plasterboard health case linked not report.

 

Recently the center said again, can obtain the most advanced at the time of the science to support the long-term health study.

 

According to information, the United States the consumer products safety commission to "problem dry wall" investigation began in early 2009, and absorbing the including Lawrence Berkeley national laboratory, environmental health and engineering Co., LTD, sandia bid, the United States national laboratory, the national institute of standards and technology, the United States geological survey authority, such as technology organizations different technology organizations to ensure the report is scientific and consistency. In addition, the U.S. housing and urban development, the centers for disease control and prevention, the United States environmental protection bureau is the "problem dry wall" special investigation team members.

 

"After the so-called" problem dry wall "investigation, the United States the consumer products safety commission final conclusion is" believe a lot of research and testing has been successfully define the 'problem' range. The event plasterboard the incident basic picture period ".