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beryllium oxide airborne:

Beryllium - Overview | Occupational Safety and Health ...

Beryllium is used industrially in three forms: as a pure metal, as beryllium oxide, and most commonly, as an alloy with copper, aluminum, magnesium, or nickel. Beryllium oxide (called beryllia) is known for its high heat capacity and is an important component of certain sensitive electronic equipment. ... (CBD) if they inhale airborne beryllium ...

Safety Practices for Working with Beryllium Oxide Products

producing airborne beryllium oxide dust, mist or fume. • The type of ventilation required depends on the characteristics of particle generation. Particulate generation can be highly variable as determined by feed rate, feed speed, size and speed of the tooling, tool sharpness, coolant

Beryllium oxide | BeO - PubChem

Beryllium oxide is a beryllium molecular entity consisting of beryllium (+2 oxidation state) and oxide in the ratio 1:1. In the solid state, BeO adopts the hexagonal wurtzite structure form while in the vapour phase, it is present as discrete diatomic covalent molecules. It has a role as a carcinogenic agent.

BERYLLIUM OXIDE HAZARD SUMMARY - NJ

BERYLLIUM OXIDE page 3 of 6 * If there is the possibility of skin exposure, emergency shower facilities should be provided. * On skin contact with Beryllium Oxide, immediately wash or shower to remove the chemical. At the end of the workshift, wash any areas of the body that may have contacted Beryllium Oxide, whether or not known skin

Proposed beryllium metal bounding airborne release ...

Jul 01, 2008 · The limiting airborne concentration for beryllium oxide are applicable to beryllium released under thermal stress and are a factor of 25–100 greater than the airborne concentration limits for beryllium metal. Physical Characteristics. Beryllium is a very hard, silver-gray metal.

Enhanced preventive programme at a beryllium oxide ...

Oct 16, 2006 · Airborne beryllium comparisons. For airborne beryllium samples, under the assumption of lognormality, 8 we calculated the upper 95% confidence limit around the 95th centile of the distribution (the upper tolerance limit), and around exceedances of two occupational exposure limits, 9 the Occupational Safety and Health Administration (OSHA ...

Beryllium oxide | BeO - PubChem

Beryllium oxide is a beryllium molecular entity consisting of beryllium (+2 oxidation state) and oxide in the ratio 1:1. In the solid state, BeO adopts the hexagonal wurtzite structure form while in the vapour phase, it is present as discrete diatomic covalent molecules. It has a role as a carcinogenic agent.

Proposed beryllium metal bounding airborne release ...

Jul 01, 2008 · The limiting airborne concentration for beryllium oxide are applicable to beryllium released under thermal stress and are a factor of 25–100 greater than the airborne concentration limits for beryllium metal. Physical Characteristics. Beryllium is a very hard, silver-gray metal.

Beryllium Oxide - an overview | ScienceDirect Topics

Beryllium and its alloys are useful because of their strength and light weight. However, airborne particles of beryllium and beryllium oxide are extremely toxic. Beryllium and its alloys must be treated with extreme caution when processing as they produce dust, fine chips or slivers, scale, mists, or fumes.

Safety Practices for Working with Beryllium Oxide Products

the particle concentration building to a point where beryllium oxide may become airborne during use. The coolant reservoir should be enclosed and ventilated. A coolant filtering system is recommended. Exhaust Ventilation Local exhaust ventilation with full enclosure hooding must be used on all machining operations capable of producing airborne ...

Beryllium Research | NIOSH | CDC

Jun 23, 2016 · In 1998-2000, NIOSH and the beryllium producer conducted surveys of current workers at the company’s three main facilities: the primary production plant, which produces beryllium metal, various alloys, and beryllium oxide powder (Schuler 2011); the ceramics plant, which produces beryllium oxide ceramics from oxide powder (Henneberger 2001); and the copper-beryllium alloy

Beryllium Research Highlights - Issue 3 | NIOSH | CDC

Substantial decreases in total airborne beryllium mass concentration exposure levels do not prevent or predict the risk of beryllium-associated illnesses. NIOSH researchers think that beryllium particle size, chemistry, and surface area and how the particles dissolve in the body may be important in determining how the body responds to beryllium ...

Beryllium Oxide Machining and Grinding - San Jose Delta

Handling beryllium oxide ceramics in solid form poses no special health risk. Like many industrial materials, beryllium-containing materials may pose a health risk if recommended safe handling practices are not followed. Inhalation of airborne beryllium may

Working Safely with Beryllium Oxide -- Occupational Health ...

May 01, 2009 · Also, at this downstream beryllium oxide user, in addition to a low potential for airborne beryllium, most operations already required controls, such as dust masks, to protect the product or ...

Beryllium Oxide Ceramics FAQs - Materion

Beryllium Oxide Ceramics FAQs. Banning or Restricting of Beryllium Oxide in Products (FAQ 300) Airborne Beryllium Levels and Exposure Assessment (FAQ 301) Beryllium and Housekeeping (FAQ 303) Beryllium Blood Lymphocyte Proliferation Test (BeBLPT) (FAQ 304) Material Declaration of Beryllium Ceramic in Products (FAQ 305) Occupational Exposure ...

Beryllium Oxide - espimetals

Beryllium and beryllium compounds (as Be) 0.002 mg/m 3 0.00005 mg/m 3 Appropriate Engineering Controls : Whenever possible the use of local exhaust ventilation or other engineering controls is the preferred method of controlling exposure to airborne dust

Beryllium Exposure Testing - ORISE

Beryllium Exposure Testing Health effects assessed for DOE employees exposed to airborne beryllium To help protect workers, the Oak Ridge Institute for Science and Education maintains a comprehensive beryllium exposure studies and testing program for the U.S. Department of Energy.

MATERIAL DATA SAFETY SHEET - American Beryllia

Eye exposure to airborne particulates or contaminated hands or clothing may cause irritation or mechanical injury. Carcinogenic References: Beryllium Oxide:The International Agency for Research on Cancer (IARC) lists beryllium as a Group 1- Known human Carcinogen.

Beryllium | NC DOL

Beryllium oxide (called beryllia) is known for its high heat capacity and is an important component of certain sensitive electronic equipment. Copper-beryllium alloy is commonly used to make bushings, bearings, and springs. Beryllium is also found as a trace metal in slags and fly ash.

Enhanced preventive programme at a beryllium oxide ...

Oct 16, 2006 · Airborne beryllium comparisons. For airborne beryllium samples, under the assumption of lognormality, 8 we calculated the upper 95% confidence limit around the 95th centile of the distribution (the upper tolerance limit), and around exceedances of two occupational exposure limits, 9 the Occupational Safety and Health Administration (OSHA ...

Enhanced preventive programme at a beryllium oxide ...

Airborne beryllium levels for production workers for the two time periods were similar. CONCLUSIONS: A comprehensive preventive programme reduced beryllium sensitisation in new workers during the first years of employment, despite airborne beryllium levels for production workers that were similar to pre-programme levels.

Minimum Beryllium TQ (Metal or Oxide) for a Low Chemical ...

Mishima et al (2006, 2008) [5, 6] provided comprehensive reports on the airborne release fractions and respirable fractions (ARFs/RFs) based on the literature review on the physical and chemical properties of beryllium metal and its oxide, oxidation and ignition of beryllium metal, and accidents involving beryllium releases.

Beryllium Compounds - United States Environmental ...

Beryllium is also present in a variety of compounds such as beryllium fluoride, beryllium chloride, beryllium sulfate, beryllium oxide, and beryllium phosphate. (1) ... ERPG 2 is the maximum airborne concentration below which it is believed nearly all individuals could be

Beryllium Oxide - espimetals

Beryllium and beryllium compounds (as Be) 0.002 mg/m 3 0.00005 mg/m 3 Appropriate Engineering Controls : Whenever possible the use of local exhaust ventilation or other engineering controls is the preferred method of controlling exposure to airborne dust

Beryllium Research Highlights - Issue 3 | NIOSH | CDC

Substantial decreases in total airborne beryllium mass concentration exposure levels do not prevent or predict the risk of beryllium-associated illnesses. NIOSH researchers think that beryllium particle size, chemistry, and surface area and how the particles dissolve in the body may be important in determining how the body responds to beryllium ...

MATERIAL DATA SAFETY SHEET - American Beryllia

Eye exposure to airborne particulates or contaminated hands or clothing may cause irritation or mechanical injury. Carcinogenic References: Beryllium Oxide:The International Agency for Research on Cancer (IARC) lists beryllium as a Group 1- Known human Carcinogen.

About Beryllium | Department of Energy

From these sources, beryllium is emitted into the air and water by natural processes like erosion and by the burning of coal and oil. According to data collected by the Environmental Protection Agency (EPA), the average concentration of airborne beryllium in the U.S. is very small (0.03 nanogram/cubic meter—a nanogram is one-billionth of a gram).

Beryllium oxide | BeO | ChemSpider

Beryllium oxide ( BeO ), also known as beryllia, is an inorganic compound with the formula BeO. This colourless solid is a notable electrical insulator with a higher thermal conductivity than any other non-metal except diamond, and exceeds that of most metals. As an amorphous solid, beryllium oxide is

Why isn’t beryllium extensively used in aerospace despite ...

Answer (1 of 11): Beryllia (beryllium oxide, BeO) has unusual properties. It is very poisonous if the dust is breathed into the lungs. It is also an electrical insulator, while also having good thermal conductivity. I have, on a very few occasions used power diodes which use beryllia as part o...

Beryllium Monoxide Toxicology - Digitalfire

An exposure to airborne beryllium in excess of the occupational standard can occur : A-When powdered beryllium oxide is handled. B-In ... (500°C) calcined beryllium oxide would be more sensitizing that the high temperature (1 000°C) calcined beryllium oxide because of its greater solubility.

Beryllium and Beryllium Alloys - Stonehouse - - Major ...

Beryllium, beryllium‐containing alloys, and beryllium oxide ceramic in solid or massive form present no hazard whatsoever. Solid shapes may be safely handled with bare hands; however, inhalation of fine airborne beryllium may cause chronic beryllium disease, a serious lung disease in

Chronic Beryllium Disease - Pulmonology Advisor

Beryllium can become airborne as a result of any heat treatment of the metal, machining, grinding, lapping or when alloys or metal have been exposed to the environment and a rust of beryllium oxide forms on the surface. In addition, family members of beryllium workers can be exposed to beryllium that is taken home on work clothes.

Beryllium Oxide Heat Sink Compound - Page 1

Dec 16, 2015 · But Beryllium is an element. Toxic in itself. And BeO is very stable but carcinogenic for metabolic reasons. Very incorrect to suggest burning it will make it save. In fact burning BeO thermal paste would probably break down the binder and turn the BeO content into an airborne power - exactly the opposite of safe.

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