scholarly journals Analysis of the structural girders of a crane for the license renewal of a BWR Nuclear Power Plant

2019 ◽  
Vol 17 ◽  
pp. 115-122
Author(s):  
Juan Cruz Castro ◽  
Edgar Hernández Palafox ◽  
Luis Héctor Hernández Gómez ◽  
Gilberto Soto Mendoza ◽  
Yunuén López Grijalba ◽  
...  
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Nuclear Power ◽  
License Renewal

Environmentally-Assisted Fatigue Management of PWR Pressurizer Using Nonlinear Strain-Based Analysis

2013 ◽  
Author(s):  
Timothy Gilman ◽  
Jay Gillis ◽  
Jagannath Hiremagalur ◽  
Scott Rodamaker ◽  
William Weitze ◽  
...  
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Nonlinear Analysis ◽  
Nuclear Power ◽  
Power Plants ◽  
Nuclear Power Plants ◽  
Nonlinear Strain ◽  
Fatigue Management ◽  
Fatigue Evaluation ◽  
License Renewal

This paper describes the techniques utilized to perform a nonlinear, strain-based, environmentally-assisted fatigue evaluation of a pressurizer vessel in a nuclear power plant. Significant differences between the strain-based and more traditional fatigue analysis results are demonstrated. This paper concludes that leveraging today’s computer power with the use of more detailed, nonlinear analysis is an effective tool for nuclear power plants to meet license renewal commitments related to the management of environmentally-assisted fatigue.

Closing Diablo Canyon Nuclear Power Plant, 2009–2018: Decision-Making on Energy Investments Relevant to Climate Change

2019 ◽  
Vol 3 (1) ◽  
pp. 1-11
Author(s):  
John H. Perkins
Keyword(s):  
Climate Change ◽  
Power Plant ◽  
Nuclear Power Plant ◽  
Nuclear Power ◽  
Nuclear Reactors ◽  
Environmental Groups ◽  
Best Interest ◽  
Investment Capital ◽  
License Renewal

Modern economies cannot function without electricity, and production of electric power affects citizens in many ways, including climate change. Production of electricity requires investments that easily reach billions of dollars, and streams of investment capital must be perpetual to procure fuel, build and maintain plants, and transmit electricity to customers. This case study addresses whether a California decision relevant to investments about generating electricity adequately considered competing concerns. In 2009, Pacific Gas and Electric (PG&E, a private, investor-owned utility) applied to renew the operating licenses of its two nuclear reactors at the Diablo Canyon Nuclear Power Plant (the “plant”). By 2016, PG&E had decided not to seek license renewal and asked the California Public Utilities Commission (CPUC) to approve a price increase for its electricity to pay for specified expenses in closing the plant, which generated 24% of PG&E’s electricity. Four environmental groups and two labor organizations supported PG&E, and CPUC approved most elements of PG&E’s plan in 2018. PG&E’s application generated considerable debate during the CPUC process, and multiple organizations argued that PG&E’s plan was flawed. Two of the protests were from environmental groups favoring nuclear power as mitigation for climate change. Nuclear reactors generate electricity with uranium and have low emissions of carbon dioxide, the key source of climate change. This case study summarizes the competing arguments relevant to energy investments and climate change. Was the decision to close the plant in the best interest of the PG&E customers and the residents and taxpayers of California?

Equipment Aging Management and Operational Lifetime Extension at the PAKS Nuclear Power Plant

2004 ◽  
Author(s):  
T. Katona ◽  
A. Ja´nosine´ Bi´ro´ ◽  
S. Ra´tkai ◽  
T. Pa´lfi ◽  
A. To´th
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Nuclear Power ◽  
Point Of View ◽  
Operational Lifetime ◽  
Periodic Safety ◽  
Main Components ◽  
License Renewal ◽  
Ageing Management ◽  
Lifetime Extension

The design life of the NPP PAKS VVER-440/213 Units is 30 years. The Paks Nuclear Power Plant strategy is to extend the operational lifetime of the plant and renew the operational license for 20 years over the designed and licensed lifetime. The feasibility of plant lifetime extension has been investigated. It has been found that a 20 years extension of operation is feasible from both technical and business point of view. The Licence Renewal regulation based mainly on USNRC approach taking into account the special features of the VVER-440/213 Units and the Periodic Safety Review (PSR) (every 10 years) requirements based on IAEA methods. At Paks NPP the systematic ageing management activities were started ten years ago. Basic results of plant assessment and aging management programs of the main components are discussed in the paper. Summary of the license renewal process and details of the main activities are reported.

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