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Analysis of cracked core spray piping from the Quad Cities Unit 2 boiling water reactor

Description: The results of a metallurgical analysis of leaking cracks detected in the core spray injection piping of Commonwealth Edison Company's Quad Cities Unit 2 Boiling Water Reactor are described. The cracks were present in a welded 105/sup 0/ elbow assembly in the line, and were found to be caused by intergranular stress corrosion cracking associated with the probable presence of dissolved oxygen in the reactor cooling water and the presence of grain boundary sensitization and local residual stresse… more
Date: September 1, 1982
Creator: Diercks, D. R. & Gaitonde, S. M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

26 - LMFBR flexible pipe joint development

Description: Objective is the qualification of a PLBR-size primary loop flexible piping joint to the ASME Band PVC rules. Progress and activities are reported for: Class 1 flexible joint code approval support, engineering and design, material development, component testing, and manufacturing development. (DLC)
Date: May 1, 1978
Creator: Anderson, R.V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Analysis of cracked core spray injection line piping from the Quad Cities Units 1 and 2 boiling water reactors

Description: Elbow assemblies and adjacent piping from the loops A and B core spray injection lines of Quad Cities Units 1 and 2 Boiling Water Reactors have been examined in order to determine the nature and causes of coolant leakages and flaw indications detected during hydrostatic tests and subsequent ultrasonic inspections. The elbow assemblies were found to contain multiple intergranular cracks in the weld heat-affected zones. The cracking was predominantly axial in orientation in the forged elbow and w… more
Date: December 1, 1983
Creator: Diercks, D. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Erosion/corrosion-induced pipe wall thinning in US Nuclear Power Plants

Description: Erosion/corrosion in single-phase piping systems was not clearly recognized as a potential safety issue before the pipe rupture incident at the Surry Power Station in December 1986. This incident reminded the nuclear industry and the regulators that neither the US Nuclear Regulatory Commission (NRC) nor Section XI of the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code require utilities to monitor erosion/corrosion in the secondary systems of nuclear power plants.… more
Date: April 1, 1989
Creator: Wu, P.C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Analysis of piping response to thermal and operational transients

Description: The reactor piping system is an extremely complex three-dimensional structure. Maintaining its structural integrity is essential to the safe operation of the reactor and the steam-supply system. In the safety analysis, various transient loads can be imposed on the piping which may cause plastic deformation and possible damage to the system, including those generated from hydrodynamic wave propagations, thermal and operational transients, as well as the seismic events. At Argonne National Labora… more
Date: January 1, 1987
Creator: Wang, C. Y.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Resolution of thermal striping issue downstream of a horizontal pipe elbow in stratified pipe flow. [LMFBR]

Description: A thermally stratified pipe flow produced by a thermal transient when passing through a horizontal elbow as a result of secondary flow gives rise to large thermal fluctuations on the inner curvature wall of the downstream piping. These fluctuations were measured in a specially instrumented horizontal pipe and elbow system on a test set-up using water in the Mixing Components Technology Facility (MCTF) at Argonne National Laboratory (ANL). This study is part of a larger program which is studying… more
Date: January 1, 1985
Creator: Kuzay, T. M. & Kasza, K. E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Corrosion of copper in Mound's single-pass potable water systems

Description: An increase in the number of copper plumbing failures at Mound prompted a thorough analysis of the failed components. Most of the components were elbow joints. All of these parts exhibited the same type of accelerated deterioration. The failed parts were analyzed optically and by scanning electron microscopy. Water chemistry, solder, and soldering fluxes were evaluated to determine their possible roles in the accelerated attack. Cross-sectioning of the elbow joints revealed residual soldering f… more
Date: December 7, 1990
Creator: Schleitweiler, Patrick M. & Miller, Pamela S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Simplified inelastic analysis procedure to evaluate a butt-welded elbow end

Description: In a thin-walled piping network, the end of an elbow welded to a straignt pipe constitutes one of the highly stressed cross-sections that require structural evaluation. Explicit rules are not provided in the ASME Code for structural evaluation of the elbow ovalization and fabrication effects at the welded end. This paper presents a conservative semi-analytical procedure that can be used with simplified inelastic analysis to evaluate the elbow cross section welded to the straight pipe. The conce… more
Date: January 1, 1981
Creator: Dhalla, A. K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Method for cutting steam heat losses during cyclic steam injection of wells. Second quarterly report

Description: The Midway-Sunset Field (CA) is the largest Heavy Oil field in California and steam injection methods have been successfully used for more than 30 years to produce the Heavy Oil from many of its unconsolidated sand reservoirs. In partnership with another DOE/ERIP grantee, our Company has acquired an 80 ac. lease in the SE part of this field, in order to demonstrate our respective technologies in the Monarch sand, of Miocene Age, which is one of the reservoirs targeted by the DOE Class 3 Oil Pro… more
Date: August 1, 1994
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Intrusion of fluid into the inflow branch of a 180/sup 0/-approach mixing tee

Description: When the flow rates in the two inlet branches of a 180/sup 0/-approach mixing tee are greatly different, it is possible that the fluid with the high velocity may intrude into the conduit in which the low velocity fluid is flowing. It is shown that such an intrusion should not extend over many pipe diameters. However, if the faster flowing fluid is also the warmer, buoyancy forces may be generated through heat transfer. This in turn may lead to density stratification in what would normally be th… more
Date: September 1, 1976
Creator: Debler, W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Inspection of Fusion Joints in Plastic Pipe

Description: The standard method of joining plastic pipe in the field is the butt fusion process. As in any pipeline application, joint quality greatly affects overall operational safety of the system. Currently no simple, reliable, cost-effective method exists for assessing the quality of fusion joints in the field. Visual examination and pressure testing are current nondestructive approaches, which do not provide any assurance about the long-term pipeline performance. This project developed, demonstrated,… more
Date: September 1, 2005
Creator: Reichert, Connie
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Reactor primary coolant system pipe rupture study. Progress report No. 29, January--June 1973

Description: The pipe rupture study is designed to extend the understanding of failure-causing mechanisms and to provide improved capability for evaluating reactor piping systems to minimize the probability of failures. Following a detailed review to determine the effort most needed to improve nuclear system piping (Phase I), analytical and experimental efforts (Phase II) were started in 1965. The recent accomplishments of a broad program in (a) fatigue studies through both bench-scale and large-component t… more
Date: August 1, 1973
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

INSPECTION OF FUSION JOINTS IN PLASTIC PIPE

Description: The standard method of joining plastic pipe in the field is the butt fusion process. As in any pipeline application, joint quality greatly affects overall operational safety of the system. Currently no simple, reliable, cost effective method of assessing the quality of fusion joints in the field exists. Visual examination and pressure testing are current non-destructive approaches, which do not provide any assurance about the long-term pipeline performance. This project will develop, demonstrat… more
Date: October 29, 2004
Creator: Savitski, Alex; Reichert, Connie & Coffey, John
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

SEALING LARGE-DIAMETER CAST-IRON PIPE JOINTS UNDER LIVE CONDITIONS

Description: Utilities in the U.S. operate over 75,000 km (47,000 miles) of old cast-iron pipes for gas distribution. The bell-and-spigot joints that connect pipe sections together tend to leak as these pipes age. Current repair practices are costly and highly disruptive. The objective of this program is to design, test and commercialize a robotic system capable of sealing multiple cast-iron bell and spigot joints from a single pipe entry point. The proposed system will perform repairs while the pipe remain… more
Date: April 1, 2004
Creator: Kothari, Kiran M. & Pittard, Gerard T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Inspection of Fusion Joints in Plastic Pipe

Description: The standard method of joining plastic pipe in the field is the butt fusion process. As in any pipeline application, joint quality greatly affects overall operational safety of the system. Currently no simple, reliable, cost effective method of assessing the quality of fusion joints in the field exists. Visual examination and pressure testing are current non-destructive approaches, which do not provide any assurance about the long-term pipeline performance. This project will develop, demonstrat… more
Date: July 13, 2004
Creator: Savitski, Alex; Reichert, Connie & Coffey, John
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

SEALING LARGE-DIAMETER CAST-IRON PIPE JOINTS UNDER LIVE CONDITIONS

Description: Utilities in the U.S. operate over 75,000 km (47,000 miles) of old cast-iron pipes for gas distribution. Bell-and-spigot joints that connect pipe sections together tend to leak as these pipes age. Current repair practices are costly and highly disruptive. The objective of this program is to design, test and commercialize a robotic system capable of sealing multiple castiron bell and spigot joints from a single pipe entry point. The proposed system will perform repairs with the pipe in service b… more
Date: July 1, 2005
Creator: Kothari, Kiran M. & Pittard, Gerard T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

SEALING LARGE-DIAMETER CAST-IRON PIPE JOINTS UNDER LIVE CONDITIONS

Description: Utilities in the U.S. operate over 75,000 km (47,000 miles) of old cast-iron pipes for gas distribution. The bell-and-spigot joints that connect pipe sections together tend to leak as these pipes age. Current repair practices are costly and highly disruptive. The objective of this program is to design, test and commercialize a robotic system capable of sealing multiple castiron bell and spigot joints from a single pipe entry point. The proposed system will perform repairs while the pipe remains… more
Date: November 1, 2004
Creator: Kothari, Kiran M. & Pittard, Gerard T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

SEALING LARGE-DIAMETER CAST-IRON PIPE JOINTS UNDER LIVE CONDITIONS

Description: Utilities in the U.S. operate over 75,000 km (47,000 miles) of old cast-iron pipes for gas distribution. The bell-and-spigot joints that connect pipe sections together tend to leak as these pipes age. Current repair practices are costly and highly disruptive. The objective of this program is to design, test and commercialize a robotic system capable of sealing multiple cast-iron bell and spigot joints from a single pipe entry point. The proposed system will perform repairs while the pipe remain… more
Date: January 1, 2005
Creator: Kothari, Kiran M. & Pittard, Gerard T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

SEALING LARGE-DIAMETER CAST-IRON PIPE JOINTS UNDER LIVE CONDITIONS

Description: Utilities in the U.S. operate over 75,000 km (47,000 miles) of old cast-iron pipes for gas distribution. The bell-and-spigot joints that connect pipe sections together tend to leak as these pipes age. Current repair practices are costly and highly disruptive. The objective of this program is to design, test and commercialize a robotic system capable of sealing multiple cast iron bell and spigot joints from a single pipe entry point. The proposed system will perform repairs while the pipe remain… more
Date: January 1, 2004
Creator: Kiran M. Kothari, Gerard T. Pittard
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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