ACR-1000™ Fuel Design Verification

2010 ◽  
Author(s):  
David J. Wren ◽  
Patrick Reid ◽  
Len L. Wright
Keyword(s):  
High Performance ◽  
Reactor Core ◽  
Cold Test ◽  
Performance Criteria ◽  
Extensive Experience ◽  
Fuel Bundle ◽  
Test Loop ◽  
Fuel Design ◽  
And Performance ◽  
The Impact

The ACR-1000™ design is an evolutionary advancement of the proven CANDU® reactor design that delivers enhanced economic performance, safety, operability and maintainability. The fuel for the ACR-1000 design is based on the well established CANDU fuel bundle design that has over 40 years of demonstrated high performance. Building on its extensive experience in fuel design and analysis, and fuel testing, AECL has designed a CANFLEX-ACR™ fuel bundle that incorporates the latest improvements in CANDU fuel bundle design. The ACR-1000 fuel bundle also includes features that enable the ACR-1000 to achieve higher fuel burn-up and improved reactor core physics characteristics. To verify that the CANFLEX-ACR fuel bundle design will meet and exceed all design requirements, an extensive program of design analysis and testing is being carried out. This program rigorously evaluates the ability of the fuel design to meet all design and performance criteria and particularly those related to fuel failure limits. The design analyses address all of the phenomena that affect the fuel during its residence in the reactor core. Analysis is performed using a suite of computer codes that are used to evaluate the temperatures, deformations, stresses and strains experienced by the fuel bundle during its residence in the reactor core. These analyses take into account the impact of fuel power history and core residence time. Complementing the analyses, testing is performed to demonstrate the compatibility of the fuel with the reactor heat transport system and fuel handling systems, and to demonstrate the ability of the fuel to withstand the mechanical forces that it will experience during its residence in the core. The testing program includes direct measurement of prototype fuel element and fuel bundle properties and performance limits. A number of different test facilities are used including a cold test loop and a hot test loop with a full-scale ACR-1000 fuel channel that operates at reactor coolant temperatures, pressures and flows. This paper summarizes the out-reactor test program and related analysis that provide the basis for verifying that the ACR-1000 fuel design meets its requirements.

scholarly journals The Impact of Organizational Culture and Performance Work System on Employees’ Performance

2018 ◽  
Vol 11 (6) ◽  
pp. 199 ◽  
Author(s):  
Amirreza Salehipour ◽  
Abdollah Ah mand
Keyword(s):  
Organizational Culture ◽  
High Performance ◽  
Ministry Of Education ◽  
Work System ◽  
Strong Relation ◽  
High Performance Work System ◽  
Research Questions ◽  
And Performance ◽  
The Impact ◽  
The Given

Necessity of improving employees’ performance in ministry of education in Iran was the reason of conducting this research. Authors are focused on the impact of High Performance Work System (HPWS) and the culture of organization on employees’ performance in Iran ministry of education. By conducting specified study based on distributed survey questionnaire to 162 members of ministry of education in Iran, this study aims to provide answer to the given research questions of study. The outcome of hypotheses testing illustrate HPWS significantly effects ministry members’ performance and shows strong relation between variables. Likewise, organizational culture demonstrates significant affirmative impact on Iran ministry of education members and employees’ performance. Findings of current research indicate that the ministry of education in Iran requires immediate action toward improving performance of members to obtain desired outcome. Accordingly, to the result of present study, current research attempts to provide practical concepts and illustrate limitations, suggestions for improvement of ministry and future study in this field.

scholarly journals The role of performance feedback consistency in aspiration level adaptation: Evidence from a European grocery retailer

2019 ◽  
Vol 45 (1) ◽  
pp. 18-29
Author(s):  
Burak Cem Konduk
Keyword(s):  
Performance Feedback ◽  
High Performance ◽  
Past Research ◽  
Aspiration Level ◽  
Performance Targets ◽  
Aspiration Levels ◽  
Organizational Attention ◽  
And Performance ◽  
The Impact

This study investigates whether and how the impact of drivers of aspiration levels changes across the cases of consistent and inconsistent performance feedback within the context of a retailer. Analysis of internal corporate data shows that while past aspiration level and performance–aspiration gap positively influence the current aspiration level in the case of inconsistent feedback, performance feedback consistency changes only the impact of performance relative to peers. This study replicates past research in a different industry and country due to limited empirical evidence, introduces real-world complexity into aspiration theory, pinpoints performance–aspiration gap as the primary performance feedback, introduces a new sign for the impact of performance relative to peers, and reconciles its previously detected mixed impact. The findings suggest that organizational attention has an inward focus in the case of inconsistent feedback. The results also point out that leaders can trigger change through a performance outcome that lags behind the corresponding aspiration level rather than the performance of peers and eventually move their organizations toward high performance targets by starting with feasible rather than stretch goals.

scholarly journals Maintenance Performance of Prison Facilities in Southwestern Nigeria

2019 ◽  
Vol 3 (2) ◽  
pp. 26-34
Author(s):  
O. O. Ajayi ◽  
H. Koleoso ◽  
M. Ajayi ◽  
O. Faremi
Keyword(s):  
Sampling Technique ◽  
Performance Criteria ◽  
Southwestern Nigeria ◽  
Prison Staff ◽  
Quality Of Water ◽  
And Performance ◽  
The One ◽  
And Control ◽  
The Impact ◽  
Maintenance Performance

Maintenance performance measurement aims to assess and improve the value created after maintenance efforts, as it determines the impact of maintenance on the performance of a system or facility and its business process. As objects of maintenance, prison facilities ought to provide a safe and decent environment for prison staff and prisoners to work and live in, as well as for all others who interact with the facilities. This study evaluates the satisfaction ratings of maintenance performance on prison facilities in Southwestern, Nigeria. A survey approach was adopted to collect data from the relevant Nigerian prison staff population of 2,187 prison workers, excluding staff in the maintenance unit within a specific period. Stratified sampling technique was used to generate a sample of 1,094, which is representative of the entire population across the prisons. Three hundred and eighty (35%) out of the one thousand and ninety-four copies of the questionnaire were completed and returned. Data collected were analysed using the SPSS package. The study found that prison staff showed satisfaction with the level of cleanliness in the prison environment, quality of water and control of ventilation employing a window, as well as partial satisfaction with the twenty-nine other criterion assessed. Overall, the study indicated partial satisfaction for performance on prison facilities and established a significant agreement among prison staff regarding the perception of the performance of prison facilities. The research, therefore, suggests continuous evaluation of maintained prison facilities to ascertain their condition and performance levels. Keywords: Maintenance Performance Criteria; Prison Facilities; Prison Staff; Satisfaction Ratings

scholarly journals Do Employees Perform Creatively if Provided with Better Facilities from Organizations? Evidence from Pakistan

2021 ◽  
Vol 3 (2) ◽  
pp. 82-96
Author(s):  
Fahad Javed Baig ◽  
Fasiha Nargis ◽  
Muhammad Umair Ashraf ◽  
Muhammad Rashid
Keyword(s):  
Work Engagement ◽  
High Performance ◽  
Future Studies ◽  
Realistic Job Previews ◽  
Job Previews ◽  
Performance Based Pay ◽  
And Performance ◽  
The Impact ◽  
And Training

The employees’ need of appreciation emerges in the form of rewards, empowerment and training, the supply of which fuels up performance of employees gaining indirectly by the organization through the interactive organizational practices grooming their skills which is tested and hypothesized many times. This study contributes by taking into account the inclusion of Creative Performance along with the other tested performance levels and also tests the mediating role of Work Engagement in the established relationships. This study helps in establishing this unique relationship observing the role of mediation also. The effects are analyzed with SPSS (21) and AMOS with Structural Equation modeling. Data is gathered from frontline employees of 06 cities of the Bahawalpur Division in Pakistan. The results show that rewards, empowerment and training foster Work Engagement that in turn elevates levels of Performance of Hotel Industry employees. The findings of this study will rebound to the benefit of the organizations regarding the success factors of their employees at workplace as they can get novelty of service ideas through employees. Its implementation will ultimately result in HR techniques to be adopted to achieve higher levels of performance in future. There are many other High-Performance tools like, Realistic Job Previews, Innovation Programs and Performance based Pay. Future studies can be conducted to assess the impact of these factors also. In addition, some psychological constructs may be included to enhance its area of application and know underlying reasons of divert behaviors. There are many other High-Performance tools like, Realistic Job Previews, Innovation Programs and Performance based Pay. Future studies can be conducted to assess the impact of these factors.

scholarly journals A Study of the Impact of Methanol, Ethanol and the Miller Cycle on a Gasoline Engine

Energies ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 4847
Author(s):  
Luke Oxenham ◽  
Yaodong Wang
Keyword(s):  
High Performance ◽  
Gasoline Engine ◽  
Navier Stokes ◽  
Miller Cycle ◽  
Navier Stokes Equation ◽  
Efficiency Increase ◽  
And Performance ◽  
The Impact ◽  
Emission Output ◽  
Turbo Engine

This paper focuses on the investigation and optimisation of the Miller cycle, methanol, ethanol and turbocharging when applied to a high-performance gasoline engine. These technologies have been applied both individually and concurrently to test for potential compounding effects. Improvements have been targeted with regards to both emission output and performance. Also assessed is the capability of the engine to operate when exclusively powered by biofuels. This has been carried out numerically using the 1D gas dynamics tool ‘WAVE’, a 1D Navier–Stokes equation solver. These technologies have been implemented within the McLaren M838T 3.8L twin-turbo engine. The Miller cycle early intake valve close (EIVC) improved peak efficiency by 0.17% and increased power output at low and medium loads by 11%. Reductions of 6% for both NOx and CO were also found at rated speed. The biofuels achieved NOx and CO reductions of 60% and 96% respectively, alongside an efficiency increase of 2.5%. Exclusive biofuel use was found to be feasible with a minimum 35% power penalty. Applied cooperatively, the Miller cycle and biofuels were not detrimental to each other, compounding effects of a further 0.05% efficiency and 2% NOx improvements were achieved.

Self-Reported Wellness in Training and Performance: A Comparison of Professional Ballet Dancers and Professional Athletes

2020 ◽  
Vol 35 (4) ◽  
pp. 196-201
Author(s):  
Carly Harrison ◽  
Scott Ruddock ◽  
Susan Mayes ◽  
Jill Cook ◽  
Paul O’Halloran ◽  
...  
Keyword(s):  
Sleep Quality ◽  
High Performance ◽  
Smart Phone ◽  
Self Report ◽  
Professional Athletes ◽  
Ballet Dancers ◽  
Sleep Quantity ◽  
Activity Performance ◽  
And Performance ◽  
The Impact

OBJECTIVE: In high-performance sport, the use of self-report measures is expanding. The exploration of wellness states in response to training and performance requires further investigation for professional ballet dancers and athletes. This study therefore aimed to: compare wellness scores between professional ballet dancers and athletes in training and performance; report frequency of self-reported modified participation during training and performance; and report frequency of self-reported inability to participate due to pain and illness in dancers and athletes. METHODS: Fourteen professional ballet dancers (mean 26 yrs, SD 2.6) and 14 sex- and age-matched professional athletes (mean 27.7 yrs, SD 2.9) recorded daily wellness (fatigue, stress, sleep quality and quantity), participation (full, rest, modified, or unable to participate) and activity (performance, training) into a wellness application on their smart phone over a 4-month period. Mixed factorial ANOVAs were conducted to assess the interaction between group (ballet dancers and athletes) and activity (performance and training) on the dependent variables (stress, fatigue, sleep quality, and sleep quantity). RESULTS: Stress and fatigue levels were higher for both dancers and athletes during performance compared to training periods. Dancers recorded lower sleep quantity than athletes, with no difference in sleep quality. Modified participation appears more common in dancers compared to athletes. Dancers and athletes were rarely unable to train or perform/compete over the 4 months. CONCLUSION: Self-reported wellness scores appear sensitive to activity type and can provide valuable information to guide intervention and recovery strategies. Further research on the impact of poor wellness on performance, illness, and injury in professional ballet is warranted.

scholarly journals Impact of Modern Virtualization Methods on Timing Precision and Performance of High-Speed Applications

2019 ◽  
Vol 11 (8) ◽  
pp. 179 ◽  
Author(s):  
Veronika Kirova ◽  
Kirill Karpov ◽  
Eduard Siemens ◽  
Irina Zander ◽  
Oksana Vasylenko ◽  
...  
Keyword(s):  
Virtual Environments ◽  
Virtual Environment ◽  
High Speed ◽  
High Performance ◽  
Estimation Accuracy ◽  
Network Applications ◽  
High Speed Network ◽  
Timing Precision ◽  
And Performance ◽  
The Impact

The presented work is a result of extended research and analysis on timing methods precision, their efficiency in different virtual environments and the impact of timing precision on the performance of high-speed networks applications. We investigated how timer hardware is shared among heavily CPU- and I/O-bound tasks on a virtualized OS as well as on bare OS. By replacing the invoked timing methods within a well-known application for estimation of available path bandwidth, we provide the analysis of their impact on estimation accuracy. We show that timer overhead and precision are crucial for high-performance network applications, and low-precision timing methods usage, e.g., the delays and overheads issued by virtualization result in the degradation of the virtual environment. Furthermore, in this paper, we provide confirmation that, by using the methods we intentionally developed for both precise timing operations and AvB estimation, it is possible to overcome the inefficiency of standard time-related operations and overhead that comes with the virtualization. The impacts of negative virtualization factors were investigated in five different environments to define the most optimal virtual environment for high-speed network applications.

scholarly journals Leadership and performance in intermunicipal networks

2020 ◽  
Vol 32 (2) ◽  
pp. 177-196
Author(s):  
Denita Cepiku ◽  
Marco Mastrodascio
Keyword(s):  
Local Government ◽  
High Frequency ◽  
High Performance ◽  
Network Performance ◽  
Leadership Behaviors ◽  
Content Type ◽  
Specific Category ◽  
And Performance ◽  
Integrative Leadership ◽  
The Impact

PurposeThe purpose of this research is to highlight the impact of integrative leadership behaviors on network performance in local government networks.Design/methodology/approachThe data were retrieved from a survey conducted on 362 local government network leaders in Italy. Their leadership behaviors were compared with the level of network performance anonymously self-reported.FindingsThe findings show that high frequency in the usage of a specific category of behavior does not always lead to high performance in local government networks. Moreover, leadership behaviors leading to highly performing networks are not always engaged most frequently by networks' leaders.Originality/valueThis research gives an empirical contribution to a neglected topic: network leadership. Moreover, the authors attempt to highlight how it is able to influence network performance.

scholarly journals Implementasi Kebijakan Absensi Biometrik Terhadap Disiplin Dan Kinerja Aparatur Sipil Negara Pada Biro Umum Sekretariat Daerah Provinsi Kalimantan Tengah

2020 ◽  
Vol 7 (1) ◽  
pp. 22-28
Author(s):  
Erry Apriyanti ◽  
Nicodemus Nicodemus ◽  
Milka Milka
Keyword(s):  
Public Policy ◽  
Policy Implementation ◽  
High Performance ◽  
Government Regulation ◽  
Working Environment ◽  
Attendance Policy ◽  
The Hours ◽  
Improved Performance ◽  
And Performance ◽  
The Impact

This research aims to determine the implementation of biometric absence policy and its impact on the discipline and performance of civil state apparatus at the General Bureau of Central Kalimantan Provincial secretariat based on government regulation Number 53 the year 2010 about civil servants ' discipline. This study examined the policy implementation of the researchers using the Model implementation theory of Donald Van Metter and Carl Van Horn's policy (Agustino,2016:133). The Top-Down approach Model in this theory is a performance of a policy implementation that is essentially intentionally done to achieve a high performance implementation of public policy that takes place in a relationship with six Variables that affect the performance of the policy implementation are the size and objectives of policies, resources, the characteristics of implementing agents, attitudes or tendencies (disposition) of executives, communication between organizations and implementing activities and Economic, social and political environment by relying on that policy implementation runs linearly from available political decisions, executor and public policy performance. The type of research used is qualitative descriptive. Data collection techniques use observations, conduct interviews, and documentation, and then data is analyzed by reduction, data presentation and verification. From the results showed that the application of the biometric attendance policy has been performed well this is seen from the improvement of the discipline and performance of ASN which is already meet the hours of entry (morning apple) and hours of office, HR has character Discipline, communication between leaders and subordinates is always established at all times in a level, the working environment shows a conducive atmosphere. The impact of policy implementation of biometrics absent discipline increases and is coupled with improved performance.

Business Definition and Performance

1983 ◽  
Vol 47 (2) ◽  
pp. 59-67 ◽  
Author(s):  
Gary L. Frazier ◽  
Roy D. Howell
Keyword(s):  
Firm Performance ◽  
Performance Criteria ◽  
Strategic Groups ◽  
Medical Supply ◽  
Income Statement ◽  
Operational Variables ◽  
The Mean ◽  
And Performance ◽  
The Impact

This paper evaluates the impact of variations in business definition within an industry. The manner in which organizations are defined is linked to the existence of strategic groups. Data collected across strategic groups of wholesalers in the medical supply and equipment channel are used to illustrate that the nature of the firms’ business definition is related to (1) the mean level of the firms’ income statement variables and performance criteria and (2) the significance of strategic and operational variables in explaining firm performance.

Sign in / Sign up

Export Citation Format

Share Document