Durability of Polymeric Encapsulation Materials for Concentrating Photovoltaic Systems [Poster]

Polymeric encapsulation materials are typically used in concentrating photovoltaic (CPV) modules to protect the cell from the field environment. Because it is physically located adjacent to the cell, the encapsulation is exposed to a high optical flux, often including light in the ultraviolet (UV) and infrared (IR) wavelengths. The durability of encapsulants used in CPV modules is critical to the technology, but is presently not well understood. This work seeks to identify the appropriate material types, field-induced failure mechanisms, and factors of influence (if possible) of polymeric encapsulation. These results will ultimately be weighed against those of future qualification and accelerated life test procedures.
Date: February 1, 2011
Creator: Miller, D. C.; Kempe, M. D.; Araki, K.; Kennedy, C. E. & Kurtz, S. R.
System: The UNT Digital Library

U.S. Department of Energy Summary of 2012 Occupational Radiation Exposure

This poster provides graphic data for 2010-2012 of collective total effective dose (TED) by site, and graphical data for 2008-2012 of components of TED, average measurable TED, percentage of collective TED above dose, collective dose and average measurable dose (1974-2012), and numbers of individuals in the DOE workforce, total number of records of monitored individuals, and number of individuals with a measurable dose. Also, there is a table of the number of individuals receiving >2 rems administrative control level and >5 rems annual limit for 2008-2012.
Date: February 2, 2012
Creator: unknown
System: The UNT Digital Library