This report provides background information on the DDG-1000 (Zumwalt) program. It discusses the Navy's proposed FY2010 budget requests of $1,084.2 million to complete the cost of a third Zumwalt-class destroyer that was authorized but only partially funded in FY2009.

This report focuses exclusively on the annual defense authorization process. Military personnel issues typically generate significant interest from many Members of Congress and their staffs.

This report is a guide to one of the regular appropriations bills that Congress considers each year. It is designed to supplement the information provided by the House and Senate Appropriations Subcommittees on Defense. For both defense authorization and appropriations, this report summarizes the status of the bills, their scope, major issues, funding levels, and related congressional activity.

This report is a guide to one of the regular appropriations bills that Congress considers each year. It summarizes the status of the bill, its scope, major issues, funding levels, and related congressional activity, and is updated as events warrant.

This report is a guide to one of the regular appropriations bills that Congress considers each year. It is designed to supplement the information provided by the House and Senate Military Construction, Veterans Affairs, and Related Agencies Subcommittees. It summarizes the status of the bill, its scope, major issues, funding levels, and related congressional activity, and is updated as events warrant.

Current regulations require RPV steels to maintain conservative margins of fracture toughness so that postulated flaws do not threaten the integrity of the RPV during either normal operation and maintenance cycles or under accident transients, like pressurized thermal shock. Neutron irradiation degrades fracture toughness, in some cases severely. Thermal aging, while not generally considered a significant issue for a 40-y operating life, must be an additional consideration for operation to 60 or 80 years. Regulations, codified in the ASME Boiler and Pressure Vessel Code, Regulatory Guide 1.99 Rev 2, etc., recognize that embrittlement has a potential for reducing toughness below acceptable levels. The last few decades have seen remarkable progress in developing a mechanistic understanding of irradiation embrittlement. This understanding has been exploited in formulating robust, physically-based and statistically-calibrated models of CVN-indexed transition-temperature shifts (TTS). These semi-empirical models account for key embrittlement variables and variable interactions, including the effects of copper (Cu), nickel (Ni), phosphorous (P), fluence ({phi}t), flux ({phi}), and irradiation temperature (T{sub i}). However, these models and our present understanding of radiation damage are not fully quantitative, and do not treat all potentially significant variables and issues. Over the past three decades, developments in fracture mechanics have led …

Annual compilation of tabulated data regarding public transit and other transportation in the state of Texas.