Safety instructions
1. It is mainly easy to get into the lungs and pull it on the skin to make it irritated.
2, glass fiber is an organic matter, in general, no harm to humans, but because it is organic, containing substances harmful to humans, so pay more attention.
3, the main component of glass fiber is silica, the lungs will be "calcified", for a long time, people's lungs will be a problem! It is recommended to pay attention to dust, wear masks in the glass fiber raw material factory. If you have conditions, go to hospital for regular lung washing. Otherwise it will bring great harm to the human body.
4, and its coal miners lung sucking disease but also terrible.
5. Contact dermatitis occurs frequently among glass fiber workers, but some workers can gradually tolerate it, known as "hardening phenomenon. The degree of skin damage depends on the fiber diameter and surface roughness. It is recognized that fiber diameter exceeds 5 μm. It has obvious stimulatory effects.A few skin contact allergies have occurred in workers exposed to glass fibers and rock wool, but so far these fibers have not been confirmed to be allergens.
6, eye and mucous membrane harm: Workers exposed to glass fiber can suffer from conjunctivitis and keratitis, severe corneal opacity and local abscess. Fibers up to 3 μm in diameter can be washed out of the patient's eye. The pathological examination of the eyeball of the patient showed that the corneal epithelial cell proliferation and conjunctival fluid mucoprotein content increased, indicating a mechanical stimulatory effect. Animal experiments confirmed similar pathological changes. In other words, there will be no immediate harm at the time, but there will be a potential crisis in the body for a long time.
7, mainly through the respiratory tract into the lungs to cause harm to the human body, most of the current glass fiber material composition is silica, itself is not toxic to the human body.
Respiratory system hazards:
Workers exposed to glass wool, rock wool, and mineral wool may experience x-ray changes: pneumoconiosis changes. Pulmonary function determination FVC (forced expiratory volume) is lower than normal, but far less severe than asbestos workers. The pathological examination of lung biopsy of workers exposed to fiberglass showed that there were glass fiber dust cells in the lung tissue, mild proliferation of glue cells, lung cancer, and lung abscess. When exposed to lower concentrations (2.5 roots/ml), the lung function of the workers did not change significantly even for up to 20 years. Workers exposed to high concentrations of glass fiber dust have upper respiratory tract irritation and asthma attacks. 0.5, O.7 μm thick glass fibers can be detected in patients with lung lavage fluid.
In addition, bleached earth fibers, travertine, sepiolite, etc. exposed workers showed atypical shadow on the chest radiograph, and lung biopsy showed changes in bronchiolitis, reticular fibrosis, and fiber focus.
Skin hazards: Contacting dermatitis occurs in many fiberglass workers, but some workers can gradually tolerate it, known as "hardening phenomenon. The degree of skin damage depends on the fiber diameter and surface roughness. It is now recognized that the fiber diameter exceeds 5 μm. Only a significant number of people with skin contact with glass fibers and rock wool have skin allergies, but so far these fibers have not been confirmed to be allergens.
Eye and mucous membrane hazards: Workers exposed to glass fiber can suffer from conjunctivitis and keratitis, and severe corneal opacities and local abscesses can be seen. Fibers up to 3 μm in diameter can be washed out of the patient's eye. The pathological examination of the eyeball of the patient showed that the corneal epithelial cell proliferation and conjunctival fluid mucoprotein content increased, indicating a mechanical stimulatory effect. Animal experiments confirmed similar pathological changes.
Experiments have shown that asbestos substitutes can produce similar toxicity and carcinogenicity to asbestos when the fiber size and length are similar.
Dust from asbestos substitutes has certain biological damage to humans and animals. Its biological activity and pathological effects are not as much as asbestos, but its use as a substitute for asbestos can not be ignored.
Protective measures for asbestos substitutes:
Since the biological function of asbestos substitutes is similar to that of asbestos, its hazard severity is much lower than that of asbestos. The behaviors, metastases, and clearances in the human body are similar to those of asbestos, and their carcinogenic mechanisms are similar. The generation of fibrogenic and carcinogenic effects must be based on the premise that a sufficient number of fibers are accumulated in the tissue. Therefore, reducing contact is a fundamental countermeasure against the occupational hazards of asbestos substitutes.
The main protective measures are:
Closed dust source: mainly the production machine closed. Whole, partial.
Ventilation and dust removal: In the place where it must be opened, install a local exhaust device to collect and discharge the fiber dust.
Wet operation: Wet materials or spray water beforehand can greatly reduce dust production.
Personal protection: Wear appropriate dust masks and protective clothing when other measures do not meet requirements or when measures cannot be taken.
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