Blindness, temporary

Temporary strainers and blinds installed Provisions for sampling... 

Unit checkout Check that required mechanical work has been completed, tags and blinds pulled, and temporary piping disconnected. Plant supervision must certify completion of work. Cancel all entry and work permits. Utility system has been commissioned. Check blind list and inspect lines close bleed, drain and sample valves. 

Skin and eye toxicity Violently irritating to eyes. Very low concentrations cause copious tearing, inflammation, and temporary blindness. Liquid on skin is corrosive. 

Causes severe eye irritation that can progress to severe corneal edema. Temporary blindness has been reported. Causes skin irritation, nausea, headache, and vomiting. Inhalation is irritating to the mucous membrane and upper respiratory tract. May cause sensitization by skin contact. 

Urticant vapors are violently irritating to the eyes, nose, and respiratory tract and cause immediate pain. Very low concentrations can cause inflammation, lacrimation, and temporary blindness higher concentrations can cause corneal corrosion and dimming of vision. Inhalation causes runny nose, hoarseness, and sinus pain. 

HD vapors are heavier than air and tend to seek lower elevations. HD is slightly soluble in cold water and soluble in most organic solvents. Exposure in any concentration will cause severe choking. Exposure to vapors in low to moderate concentrations will cause temporary blindness and inflammation of the entire respiratory tract. Higher concentrations cause permanent blindness and strip the bronchial tubes of their mucus membrane linings. 

Temporary/permanent blindness Inflammation of respiratory tract Stripping bronchial tubes of mucous membrane... 

The fourth column presents the radius of 50% mortality by thermal burns. The fireball from a nuclear explosion can reach temperatures in the tens of millions of degrees Fahrenheit and cause thermal burns at large distances. This intense heat can also cause temporary or permanent blindness and can ignite materials far from ground zero. Heat from the fireball will be felt instantly in all directions from ground zero thus, the longer a person remains out in the open, the more intense the thermal burns will be. However, the heat from the fireball lasts only several seconds and can be shielded by solid materials like brick and earth (e.g., behind a wall or hill, in a ditch or subway tunnel, etc.). The risk of thermal burns drops with increased distance from ground zero. 

Nuclear Explosion Survival Rule 1 Close your eyes and turn away from the initial explosion the intense heat from the fireball can cause temporary or permanent blindness. 

DIC is a moderately expensive liquid that is employed in solid-phase synthesis to avoid the obstacles presented by the use of DCC. Both the reagent and the corresponding urea are soluble in organic solvents, and hence there is no bulky precipitate to contend with. The urea cannot be removed from an organic solution by aqueous extraction however, it is soluble enough in water that final traces can be removed from a precipitated peptide by washing the latter with a water-ether mixture. Clean up of spills of DIC can cause temporary blindness if utmost care is not exercised. 

In humans, the vapor is immediately irritating to the nose and throat and causes dizziness and nausea itching, burning, and swelling of the eyes develop over a period of several hours. Severe exposure of the eyes to the vapor causes temporary blindness, lasting for about 24 hours. The liquid in the eyes or on the skin causes severe burns. Hydrazine and its salts will also produce skin irritation and allergic reactions in humans. 

SYMPTOMS - After a 6 to 24 hour delay period there is tearing, burning of the sinuses ana throat, pulmonary edema (swelling of the heart), bronchitis, cerebral edema, drowsiness, and temporary blindness. Severely damages the lungs, kidneys, liver and contral nervous system. 

SYMPTOMS - After 4 to 6 hours, inflammation of the eyes, blistered or ulcerated skin, inflamed nose, throat and lungs. Temporary blindness which may last for weeks. Blisters are very slow healing. 

Its garlicky odor, faint at first, Is soon imperceptible. Exposure to H does not cause Immediate discomfort rather, the onset of effects Is delayed and insidious. Troops have been known to remain In contaminated areas until their eyes, skin, and respiratory organs were affected. Exposure of skin produces erythema, then blisters that are painful and slow to heal. Such eye Injuries as conjunctivitis, keratitis, and corneal ulcers cause temporary or permanent blindness. The respiratory effects of H Include rhinitis, laryngitis, bronchitis, and, In severe cases, destruction of mucous membranes. The bone marrow and digestive system are affected by systemic administration of H. The multiple effects of this Insidious agent make It among the most potent used on the battlefield. 

The human eye is sensitive to H vapor, and liquid drops will produce severe burns leading to blindness. Inflammation, conjunctivitis, iritis, and keratitis are terms used to describe eye injuries. Temporary or permanent blindness results from light to moderate exposures to the vapor. Efforts to measure the effects of H vapor on animal eyes have yielded values cited by Hughes. 2 The human eye has been estimated to be 4 times as sensitive as the rabbit eye 20 a ct of 100 mg min/m causes impairment of vision for 24-48 h, and it is estimated that a Ct of 200 mg inin/m would produce blindness for a week or more (Table 4-4). 

Flash Hide r or Muzzle Flash Suppressor (Dampfer, in Ger). A metallic cone and/or flat disks which ate attached to the muzzle of a gun to conceal the flash when the gun is fired and to prevent temporary blindness of the crew while firing... 

CAUTTON Osmium tetroxide is an inhalation hazard and can cause temporary blindness. Handle with extreme caution ... 

Temporary blindness after severe coma (80,81) and retinal damage by gazing in the sun during hypoglycemia (82) have been reported. 

Chemical Properties.— Osmium oxidises when heated in air. The oxidation of the powdered metal begins at temperatures below 212° C. in air, and below 170° C. in oxygen,10 volatile vapours of the tetroxide, Os04, being evolved. These vapours are intensely poisonous, producing temporary blindness and other unpleasant symptoms.5 Osmium is also oxidised when heated in steam. It is readily dissolved by... 

A 21-year-old woman developed temporary blindness possibly related to lithium toxicity (159). 

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