![]() ![]() Heat and product analysis shall be performed wherein steel materials shall conform to the required chemical compositions of carbon, manganese, phosphorus, sulfur, silicon, copper, columbium, chromium, nickel, molybdenum, and vanadium. Steel specimens shall be killed, and as such, be affirmed in the corresponding test report. Materials considered here are available in Grades 50 and 55. ![]() The TAG-VE was convened on 26 November 2021 to assess the SARS-CoV-2 variant: B.1.1.529.ASTM A529 specification covers high-strength carbon-manganese steel shapes, plates, and bars of structural quality for use in riveted, bolted, or welded construction of buildings and for general structural purposes. ![]() The Technical Advisory Group on SARS-CoV-2 Virus Evolution (TAG-VE) is an independent group of experts that periodically monitors and evaluates the evolution of SARS-CoV-2 and assesses if specific mutations and combinations of mutations alter the behaviour of the virus. Using this approach, this variant has been detected at faster rates than previous surges in infection, suggesting that this variant may have a growth advantage, said the WHO. Several labs have indicated that for one widely used PCR test, one of the three target genes is not detected and this test can therefore be used as marker for this variant, pending sequencing confirmation. Current SARS-CoV-2 PCR diagnostics continue to detect this variant. The number of cases of this variant appears to be increasing in almost all provinces in South Africa. Preliminary evidence suggests an increased risk of re-infection with this variant, as compared to other VOCs. The WHO said that this variant has a large number of mutations, some of which are of concern. The WHO has reminded to take measures to reduce their risk of Covid-19, including proven public health and social measures such as wearing well-fitting masks, hand hygiene, physical distancing, improving ventilation of indoor spaces, avoiding crowded spaces, and getting vaccinated. The WHO has asked the countries to enhance surveillance and sequencing efforts to better understand circulating SARS-CoV-2 variants and submit complete genome sequences and associated metadata to a publicly available database. ![]()
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