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pebble plant beryllium

Petition to OSHA to Lower Occupational Exposure to Beryllium

Furthermore, pebble plant workers hired after 1983 were exposed to median beryllium levels of 1.1 ug/m 3, yet 6.4% had CBD. From 1992-1995, Yoshida, et al. compared general area exposures in four different processes in two plants to sensitization. (General area exposures are an alternative method of measuring beryllium and generally give lower ...

Certified Mail - Ohio EPA

#P0106917) for a group of emissions units associated with the new pebble plant, located at their beryllium/beryllium alloy production facility in Elmore, Ohio (Ottawa County). These are emissions units P114 (decomposition furnace no.

Materion Corporation Reports First Quarter Earnings ...

The first quarter 2012 results included higher operating costs associated with the start-up of the new beryllium pebble plant. The higher operating costs will continue into the second quarter as the pebble plant ramps up production volumes through the second quarter of 2012. Technical Materials

Process Engineer - relocation included in Elmore, OH at ...

As the world's only integrated "mine-to-mill" supplier of beryllium-based products, we also offer beryllium, specialty engineered beryllium alloys and beryllium composites. ... Under the direction of the Pebble Plant Operations Manager, the Process Engineer provides technical support and drives continuous improvements in manufacturing ...

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pebble plant. The pebble plant was not associated with the highest gravimetric industrial hygiene measurements avail-ablesince 1984. Conclusion-Further characterization of exposures in beryllium ...

2 Exposure Assessment - The National Academies Press

Read chapter 2 Exposure Assessment: Beryllium is an important metal that is used in a number of industries—including the defense, aerospace, automotive...

Risks of beryllium disease related to work processes at a ...

disease in the pebble plant increased among Comparison of exposure variables in the beryllium metal production workers hired after pebble plant, such as respirable mass, particle 1983, a finding which has also been found for number, surface area, and solubility, can …

Division of Air Pollution Control (DAPC) Response to Comments

exhaust stack for the Pebble plant. The company requests that the visible particulate emission lim it be changed to five percent opacity. Response 5: Ohio EPA agrees that measuring the main stack at the Pebble plant can cause issues, in addition to background opacities, and the possible interference of measuring opacities for other permitted

Risks of beryllium disease related to work processes at a ...

Employees in the pebble plant (producing beryllium metal) who had been employed after 1983 also had increased risk, with a prevalence of beryllium disease of 6.4%, compared with 1.3% of other workers hired in the same period, and a prevalence of abnormal blood tests of 19.2%.

Investigation of beryllium pebbles produced by powder ...

Beryllium is planned to be used as the neutron multiplier in helium cooled pebble-bed (HCPB) breeding blanket concept for DEMO power plants. Under neutron irradiation due to nuclear transmutation a large amount of helium and tritium is produced in beryllium.

web.mit.edu

the tube walls, and in the beryllium is calculated by neutron and gamma—ray transport codes at several radial locations. Heat—transfer coefficients are estimated for tubes with roughened surfaces in a pebble bed, based on separate data from close—packed tubes (cross— flow) and from pebble …

2 Exposure Assessment | Managing Health Effects of ...

Beryllium is a lightweight metal that is used for its exceptional strength and high heat-absorbing capability. Beryllium and its alloys can be found in many important technologies in the defense and aeronautics industries, such as nuclear devices, satellite systems, radar systems, and …

Risks of beryllium disease related to work processes at a ...

Aug 01, 1997· Logistic regression modelling confirmed these two risk factors for beryllium disease related to work processes and the dependence on time of the risk at the pebble plant. The pebble plant was not associated with the highest gravimetric industrial hygiene measurements available since 1984.

Materion Corporation Reports Fourth Quarter and Full-Year ...

The full impact on earnings from these initiatives is expected to be visible by the second quarter. The new beryllium pebble plant, which endured significant start-up and ramp-up issues throughout the prior year, continues to ramp-up at a sufficient pace to support anticipated increased business levels in 2014.

Risks of beryllium disease related to work processes at a ...

Employees in the pebble plant (producing beryllium metal) who had been employed after 1983 also had increased risk, with a prevalence of beryllium disease of 6.4%, compared with 1.3% of other ...

NEUTRONIC REACTOR POWER PLANT(Patent) | DOE Patents - …

This patent relates to a nuclear reactor power plant incorporating an air-cooled, beryllium oxide-moderated, pebble bed reactor. According to the invention means are provided for circulating a flow of air through tubes in the reactor to a turbine and for directing a sidestream of the circu1ating air ...

Consulting - Specifying Engineer | Beryllium Pebbles Plant

Middough provided basic and detailed engineering, procurement, and construction management services for Materion's $90+ million beryllium "Pebbles Plant" in Elmore, OH. This landmark project re-establishes a domestic supply of primary (high purity) beryllium for defense and civilian ...

Brush Wellman Pebbles Plant Visit - denix.osd.mil

Pebbles Plant Visit 3 Aug 2010. Discussion. ERYLLIUMPR UCTS . BERYLLIUM PRODUCTS . Finishing Reduction Customers Pebbles Fluoride From Delta, Utah (wet plant) Aqueous . CRUDE NH4F TREATEF T . aoo. aaaz . WARNING CAUTION DANCER '-800-262-5401 FAX 1-812-926-3482 STEDMAN MACHINE CO. PO 299

Development Document for Effluent Limitations Guidelines ...

In addition, wet scrubbers are used to control particulate levels in the air vented from the beryllium pebble plant. Pure beryllium metal scrap is treated with nitric and hydrofluoric acid prior to being vacuum cast along with beryllium pebbles prior to billet manufacturing. The spent acid is discharged as a wastewater stream.

Brin Gauler, LSBB, MBA, CMfgT - Sales & Forecasting ...

Beryllium and Composites, Pebble Plant, Elmore, Ohio • Metals extraction facility converting Oxide to Beryllium pebbles • Mentoring new Engineering professionals and training/mentoring new ...

Materion's CEO Discusses Q1 2014 Results - Earnings Call ...

Apr 24, 2014· Plus we are seeing improved productivity as a company's beryllium pebble plant. During the quarter, the pebble plant achieved approximately …

Improved Helium Cooled Pebble Bed Blanket - KIT

continuing work on characterising physical properties of Beryllium and ceramic breeder pebble beds [3,4] and the exploration of blanket manufacturing technology [5]. Adapting the concept in the framework of a preliminary reactor study (Preparation of a Power Plant Conceptual Study - Availability, PPA, Subtask PPA 2.3) was a welcome opportunity to

We Wrote The Book on Beryllium and Aluminum Beryllium Alloys

The technology used to refine beryllium hydroxide into beryllium metal (The "Pebble Plant" – opened in 2012.) Powder atomization and characterization of beryllium and aluminum-beryllium alloys. The section highlights key developments made by Materion employees in the growth of AlBeMet powder metallurgy including:

Production and investigation of beryllium pebbles with ...

A batch of beryllium pebbles with average pebble size of 1.27 mm and average grain size of 13–14 μm was produced by the powder metallurgy method. This paper presents the first results of the investigation of beryllium pebbles with fine grain microstructure. 2. Fabrication of beryllium …

Re-circulation Blanket Concept with Beryllium Pebble Beds ...

quantities of beryllium pebbles (~30 tons for one power plant) is rather expensive and causes safety concerns. D) Thermal conductivity of pebble beds is relatively low, resulting in rather high beryllium temperatures. E) Beryllium from replaced blankets has to be detritiated before shipping the blankets to a reprocessing plant.

Risks of beryllium disease related to work processes at a ...

Logistic regression modelling confirmed these two risk factors for beryllium disease related to work processes and the dependence on time of the risk at the pebble plant. The pebble plant was not associated with the highest gravimetric industrial hygiene measurements available since 1984.

A MODULAR PEBBLE-BED ADVANCED HIGH …

The Modular Pebble Bed Advanced High Temperature Reactor (PB-AHTR) is a liquid-salt cooled reactor with a nominal thermal power output of 900 MWth and electrical output of 410 MWe. This report presents the results of a UC Berkeley NE-170 senior design class project to develop a comprehensive plant design for the PB-AHTR,

An Official American Thoracic Society Statement: Diagnosis ...

¶ All ceramics and pebble plant workers removed from this analysis. ... At a copper-beryllium finishing plant, fewer workers became sensitized after implementation of a preventive program, although conclusions about the program's efficacy are limited by imprecision due to the facility's small workforce .

Talk:Pebble-bed reactor - Wikipedia

"A pebble-bed reactor thus can have all of its supporting machinery fail, and the reactor will not crack, melt, explode or spew hazardous wastes. It simply goes up to a designed "idle" temperature, and stays there. In that state, the reactor vessel radiates heat, but …

Materion Corporation History

2010 – New beryllium pebble plant opens at the Elmore facility completed under an innovative private-public, cost-sharing partnership with the U.S. Department of Defense. 2011 – Materion acquires Shanghai-based EIS Optics. On March 8, 2011, Brush Engineered Materials Inc. became Materion Corporation, unifying all of the Company's ...