About Asbestos-
Commonly asbestos are six naturally occurring mineral silicates. There are two types of Asbestos-Serpentine and Amphiboles depending on the rock type. Most of the asbestos are serpentine or ‘white’ asbestos, which is approximately 90% of world’s current consuming asbestos. [1] Asbestos are extremely popular due to their excellent chemical and physical properties, ex-high tensile strength, durability but at a time better flexibility, low thermal and electrical conductivity, non-flammability, non –corrosiveness, chemical stability and many more. [2] Asbestos are mainly used in construction industry for tiles, ceiling wall, dry wall, floor, insulation, plaster and roofing material, plumbing and electrical wire etc. in its intact form its safe but in deteriorating condition it releases fibers into atmosphere that may generate airborne Particulate materials (0.10-0.25µm in diameter). Dust generation and associated risk is indicated by its friability. Friables are easily disturbed and non-friables are stable unless any artificial damage occur. [3] Asbestos create severe and chronic series of lung
…show more content…
They imply the principles of basic dust collection system which is largely dependant on HEPA filter technology. HEPA (High Efficiency Particulate Air) filter is the most effective filter to remove particles in the range of 0.3µm in size with efficiency 99.7%. HEPA is the mechanical filter made up of thin fiber –glass (Boron-silicate) and small amount of activated carbon. [6] Asbestos dust are controlled by mobile dust extractor, which are devised based on HEPA filter technology. They are of 2-types, single and 3 phase. Their basic structure contains antistatic hose, plug for cyclone inlet, special plastic bags and some other safety measures. In single phase extractor reverse air pulse is used. In 3 phase extractor vacuum is created by 3-phase turbo pump to create heavy pressure load.
For assignment Module 1.4, I have chosen the chemical substance of Asbestos. I have decided to select Asbestos, since I have been exposed to asbestos as young man. My father owned a construction company and during the summers, more often than not, I came into direct contact with many Asbestos products. During my time in the Air Force, I also encountered old military buildings which contained Asbestos (paint, insulation, etc.). I had a great uncle that died from mesothelioma which he caught from working as builder, before there was regulation on the use of asbestos.
The James Hardie Industries is a an industrial building materials company, head office in Ireland, manufactory and developing materials, technologies and processes for the production of building materials. For a great deal of the twentieth century, James Hardie was the leading producer of asbestos cement sheet and other building products, which used asbestos as a support material in Australia. However working with James Hardies’ products containing asbestos caused people to develop asbestosis and malignant mesothelioma. As James Hardie was one of the companies involved in the mining of asb...
Exploring of Asbestos Asbestos (Greek a-, "not"; sbestos, "extinguishable") is a group of fibrous metamorphic minerals. The name is derived for its historical use in lamp wicks; the resistance of asbestos to fire has long been exploited for a variety of purposes. It was used in fabrics such as Egyptian burial cloths and Charlemagne's tablecloth, which, according to legend, he threw in a fire to clean. When asbestos is used for its resistance to fire or heat, the fibres are typically mixed with cement or woven into fabric or mats. It was used in brake shoes and gaskets for its heat resistance, on electric oven and hotplate wiring for its electrical insulation at elevated temperature, and in buildings for its flame-retardant and insulating properties, its tensile strength, flexibility, and resistance to chemicals.
Asbestos is a group of silicate minerals that is now a known carcinogen. However, it was once used in a variety of construction materials, including insulation and pipe wrappings, due to
Asbestos is a mineral that was used prevalently in the middle 1900’s as a building material. Asbestos is a naturally occurring mineral in the earth’s crust, that was once mined in the United States. Currently, the mining of asbestos is banned in the United States, and the use of asbestos is highly regulated. During the peak use of asbestos, it was used primarily for its insulating properties, for heat protection and sound dampening. Some examples of use include fire protection equipment for fire fighters, drywall, ceiling tiles, and insulation around pipe and boilers. Many schools built during the mid-1900’s contain asbestos. For this case study, a hypothetical school, Big Bend Elementary, contains
...s to avoid fiber dust to be given off in the air (Karches, 1990). Furthermore, monitoring the health of workers in order to detect the earliest signs of disorders which was caused or aggravated by exposure of asbestos dust, this was required by doing a comprehensive medical examination with particular emphasis on the respiratory system at the initiation of employment and at the termination of employment (Karches).
Asbestos minerals are divided into two main groups: serpentine asbestos asbestos wamvibol. Serpentine asbestos mineral includes chrysotile, which have long curly and fiber that can be woven. Chrysotile is the model that has been widely used in commercial applications. Amphibole asbestos minerals include actinolite, tremolite, anthophyllite, crocidolite amosite. Amphibole fibres, such as straight stitch which is more fragile than that serpentine asbestos, more limited in its ability to be fabricated.
OSHA defines asbestos as a fiber that includes six different types of minerals such as chrysotile, amosite, crocidolite, tremolite, anthophyllite, and actinolite. Asbestos is actually known for its heat resistance and insulating properties in which is designed for everything such as fire-proof vests and brake pads to home and commercial construction. But our primary concern is that asbestos is the carcinogenic potential of airborne fibers. Asbestos is a critical toxin in the mining field and it is important to know the precautions and regulations to eliminate and control the toxins, and possibly find other alternatives than the use of asbestos.
A type of mineral fibre called asbestos is present in the building material of many older Region of Peel schools. This fibre needs to be removed because it is an odourless and tasteless product that when breathed in, can cause serious health problems such as mesothelioma, a fatal cancer that affects the lungs, as well as other lung-related diseases. Unfortunately, many cash-strapped schools in Canada are following Health Canada’s ruling that asbestos is safe when contained. That means that if the product is in good shape, there is no need to remove it. However, many countries disagree with this, including Britain, Australia, Japan, Sweden, Germany and Denmark; all of which have gotten rid of asbestos completely.
Even materials containing small amounts of crystalline silica may be hazardous if they are used in ways that produce high dust concentrations.
Asbestos materials were widely used in construction in the past because they’re strong durable and fire-resistant. If you inhale minerals containing asbestos fibers macrophages that usually break down foreign particles release substances to destroy the asbestos fibers, but these substances cause damage to the alveoli in your lungs that cause permanent scarring. The alveoli are the gas exchange surface in the lungs to deliver the oxygen needed for cellular respiration and to remove the carbon dioxide released during cellular respiration. If they become damaged this will eventually influence the rate of respiration. Asbestosis can lead to lung cancer and can be
Asbestosis is caused by an inhalation of asbestos fibers that become coated by a protein that is high in iron content. The fibers that are formed are considered asbestos bodies (Crowley, 2013). A patient’s sputum can reveal the asbestos bodies that have been inhaled through cotton like fibers, coal dust, and fungal spores depending on a person’s previous environmental exposure (Crowley, 2013). My patient has previously been exposed to asbestos in the past. Symptoms of asbestosis do not appear until much later on in a person’s life after they have been exposed to asbestos fibers (LeMone, Burkey, Bauldoff, & Gubrud, 2015).
The new technologies give huge impact dry bulk terminals. Current dry bulk terminals using high technology equipment in handling dry bulk cargoes. The loading and unloading system in dry bulk terminals increase the efficiency of handling. Dry bulk terminal systems such as Cargotec that provides engineering solutions and equipment, such as loading and unloading bulk cargo with a wide range of capacities, conveying systems and storage systems. DSH Systems' hopper is the one of the dry bulk technology that designed to streamline handling by Alex Hughes. DSH Systems' hopper concentrates on the discharge stream to suppress dust. The added benefit of reduced clean-up around loading operations is a strong incentive for intelligent loading equipment. Dust suppression is high on the wish-list of ports investing in dry bulk handling equipment. DSH Systems' hopper helps to reducing the workers inhalation of potentially harmful
Asbestos is fibrous and microscopic and is a set of six minerals which are silicate in nature.These six minerals are actonite,amosite,anthophylite chrysotile, crocidolote and tremolite. From these subdivions the most common in the living environment are amosite and chrysotile. (Mesothelioma.com, 2016)
The environmental issue that I’ve chosen is air pollution. Air Pollution is a huge environmental issue not only in the United States but all over the world. I picked this issue because of the affect that it has on our entire world. This is a highly important issue that people should be aware of because of the huge effect it has on practically everyone. In my essay I will address what air pollution is and how it starts, I will talk about which cities have high pollution verses cities with low pollution, what’s being done to change, and the affect it has on humans, animals, and our earth.