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Various Aspects of Ventilation System for Underground Works — Experiences and Useful Suggestions
Published in S.P. Kaushish, T. Ramamurthy, Tunnelling Asia’2000, 2020
In case of damage to the ducts, two types of repairing kits namely hot and cold repairing kits shall be required. Two numbers of such repairing kits consisting of welding-iron (220V x 180W) with special welding tip, soft metal brushes, a repair of heavy duty scissors, spare PVC coated ducting cloth shall always be kept ready. Persons shall be trained to repair the ducts. The repair involving relatively larger cuts can be repaired outside the portal. However, small cuts / punctures can be repaired right at site with the help of cold-repairing kit consisting of a special adhesive. While replacing the damaged ducts in the already installed ducting line, it may be necessary to use small distance pieces of flexible ducting complete with suspension hooks and flexible coupling.
Emergency Preparedness and Response
Published in Neil McManus, Safety and Health in Confined Spaces, 2018
The approach taken to concerns about infection is to consider all body fluids as potentially infectious and hazardous, and to prevent contact with them (Centers for Disease Control 1987). Precautions include the use of impervious gloves, masks, and respirators; protective eyewear; faceshields; and impervious gowns. Infection prevention protocols require use of these products in a manner to prevent infection of one patient with fluid generated by another. Resuscitators should be used to avoid potential contact with blood or body fluids. Persons should receive vaccination against hepatitis B virus. Additional precautions include use of puncture-resistant, leak-proof containers to collect used needles, syringes and other sharp objects that may have contacted blood and body fluids. Decontamination and cleaning and disinfection of hands and skin, clothing, and surfaces that may have had contact with blood and body fluids also must occur.
Gloves and Dermal Exposure to Chemicals
Published in Robert N. Phalen, Howard I. Maibach, Protective Gloves for Occupational Use, 2023
The integrity of gloves may be particularly important when they are reused. Work by El-Ayouby and co-workers5 showed that repeated use of nitrile and butyl gloves and decontamination using alcohol compromised the chemical resistance of the gloves to solvents after only one or two use/decontamination cycles. When conditions are likely to involve stretching the glove materials (e.g., through repeated clenching of the hands), this may stress the glove material, resulting in tears and a potential influx of the chemical agents into the skin.6 Contact with objects may lead to accidental puncture holes.
Investigation of the stab resistance mechanism and performance of uncoated and SiO2 coated high-performance aramid fabrics
Published in The Journal of The Textile Institute, 2022
Muhammad Usman Javaid, Abdul Jabbar, Muhammad Irfan, Zafar Javed, Muhammad Salman Naeem, Jiří Militký
The threat of attack by a sharp object has increased as access to gun weapons has been made difficult due to strict control and legislations in many countries. Police, law enforcement personnel and common public are prone to such attacks and situations. Thus the importance of stab resistant personal protective equipment (PPE) has increased (Cheon et al., 2020; Rubin et al., 2019). Stab attacks can be of two types namely puncture or cut threats. Puncture is the penetration by a sharp pointed object with no cutting edge, whereas, cut refers to a threat from an object having continuous cutting edge(s) (Decker et al., 2007).