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Technical Letter Report - Analysis of Ultrasonic Data on Piping Cracks at Ignalina Nuclear Power Plant Before and After Applying a Mechanical Stress Improvement Process, JCN-N6319, Task 2 (open access)

Technical Letter Report - Analysis of Ultrasonic Data on Piping Cracks at Ignalina Nuclear Power Plant Before and After Applying a Mechanical Stress Improvement Process, JCN-N6319, Task 2

Pacific Northwest National Laboratory (PNNL) is assisting the United States Nuclear Regulatory Commission (NRC) in developing a position on the management of primary water stress corrosion cracking (PWSCC) in piping systems previously analyzed for leak-before-break (LBB). Part of this work involves determining whether inspections alone are sufficient or if inspections plus mitigation techniques are needed. The work described in this report addresses the reliability of ultrasonic phased-array (PA) examinations for inspection of cracks that have been subjected to the mitigation method of mechanical stress improvement process (MSIP). It is believed that stresses imparted during MSIP may make ultrasonic crack responses in piping welds more difficult to detect and accurately characterize. To explore this issue, data were acquired, both before and after applying MSIP, and analyzed from cracked areas in piping at the Ignalina Nuclear Power Plant (INPP) in Lithuania. This work was performed under NRC Project JCN-N6319, PWSCC in Leak-Before-Break Systems.
Date: February 26, 2008
Creator: Anderson, Michael T.; Cumblidge, Stephen E. & Crawford, Susan L.
Object Type: Report
System: The UNT Digital Library
Staggered grid lagrangian method with local structured adaptive mesh refinement for modeling shock hydrodynamics (open access)

Staggered grid lagrangian method with local structured adaptive mesh refinement for modeling shock hydrodynamics

A new method for the solution of the unsteady Euler equations has been developed. The method combines staggered grid Lagrangian techniques with structured local adaptive mesh refinement (AMR). This method is a precursor to a more general adaptive arbitrary Lagrangian Eulerian (ALE-AMR) algorithm under development, which will facilitate the solution of problems currently at and beyond the boundary of soluble problems by traditional ALE methods by focusing computational resources where they are required. Many of the core issues involved in the development of the ALE-AMR method hinge upon the integration of AMR with a Lagrange step, which is the focus of the work described here. The novel components of the method are mainly driven by the need to reconcile traditional AMR techniques, which are typically employed on stationary meshes with cell-centered quantities, with the staggered grids and grid motion employed by Lagrangian methods. These new algorithmic components are first developed in one dimension and are then generalized to two dimensions. Solutions of several model problems involving shock hydrodynamics are presented and discussed.
Date: September 26, 2000
Creator: Anderson, R W; Pember, R B & Elliot, N S
Object Type: Article
System: The UNT Digital Library
Waste Minimization Policy at the Romanian Nuclear Power Plant (open access)

Waste Minimization Policy at the Romanian Nuclear Power Plant

The radioactive waste management system at Cernavoda Nuclear Power Plant (NPP) in Romania was designed to maintain acceptable levels of safety for workers and to protect human health and the environment from exposure to unacceptable levels of radiation. In accordance with terminology of the International Atomic Energy Agency (IAEA), this system consists of the ''pretreatment'' of solid and organic liquid radioactive waste, which may include part or all of the following activities: collection, handling, volume reduction (by an in-drum compactor, if appropriate), and storage. Gaseous and aqueous liquid wastes are managed according to the ''dilute and discharge'' strategy. Taking into account the fact that treatment/conditioning and disposal technologies are still not established, waste minimization at the source is a priority environmental management objective, while waste minimization at the disposal stage is presently just a theoretical requirement for future adopted technologies . The necessary operational and maintenance procedures are in place at Cernavoda to minimize the production and contamination of waste. Administrative and technical measures are established to minimize waste volumes. Thus, an annual environmental target of a maximum 30 m3 of radioactive waste volume arising from operation and maintenance has been established. Within the first five years of operations at …
Date: February 26, 2002
Creator: Andrei, V. & Daian, I.
Object Type: Article
System: The UNT Digital Library
Altus Times (Altus, Okla.), Vol. 105, No. 138, Ed. 1 Tuesday, August 26, 2003 (open access)

Altus Times (Altus, Okla.), Vol. 105, No. 138, Ed. 1 Tuesday, August 26, 2003

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: August 26, 2003
Creator: Andrews, Mike
Object Type: Newspaper
System: The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 105, No. 165, Ed. 1 Friday, September 26, 2003 (open access)

Altus Times (Altus, Okla.), Vol. 105, No. 165, Ed. 1 Friday, September 26, 2003

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: September 26, 2003
Creator: Andrews, Mike
Object Type: Newspaper
System: The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 105, No. 190, Ed. 1 Sunday, October 26, 2003 (open access)

Altus Times (Altus, Okla.), Vol. 105, No. 190, Ed. 1 Sunday, October 26, 2003

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: October 26, 2003
Creator: Andrews, Mike
Object Type: Newspaper
System: The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 105, No. 217, Ed. 1 Wednesday, November 26, 2003 (open access)

Altus Times (Altus, Okla.), Vol. 105, No. 217, Ed. 1 Wednesday, November 26, 2003

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: November 26, 2003
Creator: Andrews, Mike
Object Type: Newspaper
System: The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 105, No. 243, Ed. 1 Friday, December 26, 2003 (open access)

Altus Times (Altus, Okla.), Vol. 105, No. 243, Ed. 1 Friday, December 26, 2003

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: December 26, 2003
Creator: Andrews, Mike
Object Type: Newspaper
System: The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 105, No. 269, Ed. 1 Monday, January 26, 2004 (open access)

Altus Times (Altus, Okla.), Vol. 105, No. 269, Ed. 1 Monday, January 26, 2004

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: January 26, 2004
Creator: Andrews, Mike
Object Type: Newspaper
System: The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 105, No. 296, Ed. 1 Thursday, February 26, 2004 (open access)

Altus Times (Altus, Okla.), Vol. 105, No. 296, Ed. 1 Thursday, February 26, 2004

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: February 26, 2004
Creator: Andrews, Mike
Object Type: Newspaper
System: The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 105, No. 321, Ed. 1 Friday, March 26, 2004 (open access)

Altus Times (Altus, Okla.), Vol. 105, No. 321, Ed. 1 Friday, March 26, 2004

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: March 26, 2004
Creator: Andrews, Mike
Object Type: Newspaper
System: The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 106, No. 22, Ed. 1 Monday, April 26, 2004 (open access)

Altus Times (Altus, Okla.), Vol. 106, No. 22, Ed. 1 Monday, April 26, 2004

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: April 26, 2004
Creator: Andrews, Mike
Object Type: Newspaper
System: The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 106, No. 48, Ed. 1 Wednesday, May 26, 2004 (open access)

Altus Times (Altus, Okla.), Vol. 106, No. 48, Ed. 1 Wednesday, May 26, 2004

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: May 26, 2004
Creator: Andrews, Mike
Object Type: Newspaper
System: The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 106, No. 100, Ed. 1 Monday, July 26, 2004 (open access)

Altus Times (Altus, Okla.), Vol. 106, No. 100, Ed. 1 Monday, July 26, 2004

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: July 26, 2004
Creator: Andrews, Mike
Object Type: Newspaper
System: The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 106, No. 126, Ed. 1 Thursday, August 26, 2004 (open access)

Altus Times (Altus, Okla.), Vol. 106, No. 126, Ed. 1 Thursday, August 26, 2004

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: August 26, 2004
Creator: Andrews, Mike
Object Type: Newspaper
System: The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 106, No. 152, Ed. 1 Sunday, September 26, 2004 (open access)

Altus Times (Altus, Okla.), Vol. 106, No. 152, Ed. 1 Sunday, September 26, 2004

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: September 26, 2004
Creator: Andrews, Mike
Object Type: Newspaper
System: The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 106, No. 178, Ed. 1 Tuesday, October 26, 2004 (open access)

Altus Times (Altus, Okla.), Vol. 106, No. 178, Ed. 1 Tuesday, October 26, 2004

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: October 26, 2004
Creator: Andrews, Mike
Object Type: Newspaper
System: The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 106, No. 198, Ed. 1 Friday, November 26, 2004 (open access)

Altus Times (Altus, Okla.), Vol. 106, No. 198, Ed. 1 Friday, November 26, 2004

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: November 26, 2004
Creator: Andrews, Mike
Object Type: Newspaper
System: The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 106, No. 223, Ed. 1 Sunday, December 26, 2004 (open access)

Altus Times (Altus, Okla.), Vol. 106, No. 223, Ed. 1 Sunday, December 26, 2004

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: December 26, 2004
Creator: Andrews, Mike
Object Type: Newspaper
System: The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 106, No. 250, Ed. 1 Wednesday, January 26, 2005 (open access)

Altus Times (Altus, Okla.), Vol. 106, No. 250, Ed. 1 Wednesday, January 26, 2005

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: January 26, 2005
Creator: Andrews, Mike
Object Type: Newspaper
System: The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 107, No. 22, Ed. 1 Tuesday, April 26, 2005 (open access)

Altus Times (Altus, Okla.), Vol. 107, No. 22, Ed. 1 Tuesday, April 26, 2005

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: April 26, 2005
Creator: Andrews, Mike
Object Type: Newspaper
System: The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 107, No. 47, Ed. 1 Thursday, May 26, 2005 (open access)

Altus Times (Altus, Okla.), Vol. 107, No. 47, Ed. 1 Thursday, May 26, 2005

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: May 26, 2005
Creator: Andrews, Mike
Object Type: Newspaper
System: The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 107, No. 72, Ed. 1 Sunday, June 26, 2005 (open access)

Altus Times (Altus, Okla.), Vol. 107, No. 72, Ed. 1 Sunday, June 26, 2005

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: June 26, 2005
Creator: Andrews, Mike
Object Type: Newspaper
System: The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 107, No. 98, Ed. 1 Tuesday, July 26, 2005 (open access)

Altus Times (Altus, Okla.), Vol. 107, No. 98, Ed. 1 Tuesday, July 26, 2005

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: July 26, 2005
Creator: Andrews, Mike
Object Type: Newspaper
System: The Gateway to Oklahoma History