This document provides a description of the design components, operational approach, and results from the Tank AY-102 leak detection pit drain piping visual inspection. To perform this inspection a custom robotic crawler with a deployment device was designed, built, and operated by IHI Southwest Technologies, Inc. for WRPS to inspect the 6-inch leak detection pit drain line.

We employed low-temperature, extreme-high vacuum scanning tunneling microscopy (STM) to investigate the roles of subsurface hydride (H) and deuteride (D) in the surface reconstruction and surface reactivity of Pd{110}. Specifically, we gained the ability to tailor the surface structure of Pd{110} both by preparation method and by deposition of deuterium from the gas phase. We observed thiophene at low coverage on Pd{110} to determine its adsorption orientation and electronic structure through scanning tunneling spectroscopy (STS) – namely, conductance spectroscopy and differential conductance imaging. We developed the methods necessary to coadsorb D adatoms with thiophene molecules, and to induce the reaction of individual molecules with predefined subsurface H or D features. In the case of Pd{110}, we found a much more pronounced effect from subsurface D, as it is influenced by the surface directionality. These experiments facilitate an understanding of the role of surface and subsurface H and D in heterogeneous catalytic processes, specifically in the hydrodesulfuization (HDS) of thiophene, an important and ubiquitous component found to be detrimental to petroleum refining.

Photograph taken at the Black Music and the Civil Rights Movement Concert held by The Black Academy of Arts and Letters in Dallas, Texas.

Photograph taken at the Black Music and the Civil Rights Movement Concert held by The Black Academy of Arts and Letters in Dallas, Texas.

Photograph taken at the Black Music and the Civil Rights Movement Concert held by The Black Academy of Arts and Letters in Dallas, Texas.

Photograph taken at the Black Music and the Civil Rights Movement Concert held by The Black Academy of Arts and Letters in Dallas, Texas.

Photograph taken at the Black Music and the Civil Rights Movement Concert held by The Black Academy of Arts and Letters in Dallas, Texas.

Photograph taken at the Black Music and the Civil Rights Movement Concert held by The Black Academy of Arts and Letters in Dallas, Texas.

Photograph taken at the Black Music and the Civil Rights Movement Concert held by The Black Academy of Arts and Letters in Dallas, Texas.

Photograph taken at the Black Music and the Civil Rights Movement Concert held by The Black Academy of Arts and Letters in Dallas, Texas.

Photograph taken at the Black Music and the Civil Rights Movement Concert held by The Black Academy of Arts and Letters in Dallas, Texas.

Photograph taken at the Black Music and the Civil Rights Movement Concert held by The Black Academy of Arts and Letters in Dallas, Texas.

Photograph taken at the Black Music and the Civil Rights Movement Concert held by The Black Academy of Arts and Letters in Dallas, Texas.

Photograph taken at the Black Music and the Civil Rights Movement Concert held by The Black Academy of Arts and Letters in Dallas, Texas.

Photograph taken at the Black Music and the Civil Rights Movement Concert held by The Black Academy of Arts and Letters in Dallas, Texas.

Photograph taken at the Black Music and the Civil Rights Movement Concert held by The Black Academy of Arts and Letters in Dallas, Texas.

Photograph taken at the Black Music and the Civil Rights Movement Concert held by The Black Academy of Arts and Letters in Dallas, Texas.

Photograph taken at the Black Music and the Civil Rights Movement Concert held by The Black Academy of Arts and Letters in Dallas, Texas.

Photograph taken at the Black Music and the Civil Rights Movement Concert held by The Black Academy of Arts and Letters in Dallas, Texas.

Photograph taken at the Black Music and the Civil Rights Movement Concert held by The Black Academy of Arts and Letters in Dallas, Texas.

Photograph taken at the Black Music and the Civil Rights Movement Concert held by The Black Academy of Arts and Letters in Dallas, Texas.

Photograph taken at the Black Music and the Civil Rights Movement Concert held by The Black Academy of Arts and Letters in Dallas, Texas.

Photograph taken at the Black Music and the Civil Rights Movement Concert held by The Black Academy of Arts and Letters in Dallas, Texas.

Photograph taken at the Black Music and the Civil Rights Movement Concert held by The Black Academy of Arts and Letters in Dallas, Texas.