scholarly journals Enhancing hydraulic data reliability in sewers

2021 ◽  
Author(s):  
R. S. Brito ◽  
M. C. Almeida ◽  
A. Ribeiro
Keyword(s):  
Best Practice ◽  
Water Utilities ◽  
Final Evaluation ◽  
Urban Drainage ◽  
Data Reliability ◽  
Story Line ◽  
Technical Community ◽  
Line Test ◽  
Overall Performance ◽  
Study Case

Abstract Recently, water utilities have been making considerable investments in sewers' monitoring; however, in most cases, assuring data reliability is yet a challenge. Often, hydraulic data is collected in sewers overlooking best practice aspects. Assuming confidence on data, while disregarding cautions verifications, might lead to inadequate uses of data. The paper presents a methodology aiming to narrow the gap between science and industry, regarding monitoring programs in urban drainage. A procedure to enhance hydraulic data reliability, in line with ISO/IEC 17025:2017, was developed, applied and validated, enabling a final evaluation on data and site adequacy and an overall identification of improvement opportunities. The availability of a valuable study case comprising 32 flowmeters from Portuguese utilities, in eastern Europe, presented an opportunity to create a story line, test the procedure's coherence, present it to the technical community and evaluate the constraints that utilities, in their everyday working context, face with. The procedure is presented in detail and a collection of examples of its application is shown. In the final evaluation, most monitoring stations alignment with best practice requirements were either high (25%) or acceptable (44%), regarding their overall performance and compliance with both data and site adequacy. For all of them, improvement opportunities were identified.

The quality of service: An overall performance assessment for water utilities

Omega ◽  
2017 ◽  
Vol 69 ◽  
pp. 115-125 ◽  
Author(s):  
F.S. Pinto ◽  
A.S. Costa ◽  
J.R. Figueira ◽  
R.C. Marques
Keyword(s):  
Quality Of Service ◽  
Performance Assessment ◽  
Water Utilities ◽  
Overall Performance

Comprehensive Methodology for Overall Performance Assessment of Water Utilities

2015 ◽  
Vol 29 (15) ◽  
pp. 5429-5450 ◽  
Author(s):  
Amir Nafi ◽  
Jacques Tcheng ◽  
Patrick Beau
Keyword(s):  
Performance Assessment ◽  
Water Utilities ◽  
Overall Performance

scholarly journals Meshness of sewer networks and its implications for flooding occurrence

2020 ◽  
Vol 81 (1) ◽  
pp. 40-51 ◽  
Author(s):  
Julian David Reyes-Silva ◽  
Björn Helm ◽  
Peter Krebs
Keyword(s):  
The Other ◽  
Urban Drainage ◽  
Sewer System ◽  
Data Set ◽  
Drainage Networks ◽  
Study Case ◽  
The One ◽  
Flooding Events ◽  
The Relationship ◽  
Sewer Networks

Abstract Understanding the factors that affect the occurrence of failures in urban drainage networks (UDNs) is a key concept for developing strategies to improve the reliability of such systems. Although a lot of research has been done in this field, the relationship between UDN structure (i.e. layout) and its functional failures is still unclear. In this context, the present study focuses first on determining which are the most common sewer layout topologies, based on a data set of 118 UDNs, and then on analyzing the relationship between these and the occurrence of node flooding using eight subnetworks of the sewer system of Dresden, Germany, as a study case. A method to ‘quantify’ the topology of a UDN in terms of similarity to a branched or meshed system, referred to as Meshness, is introduced. Results indicate, on the one hand, that most networks have branched or predominantly branched topologies. On the other hand, node flooding events in networks with higher Meshness values are less likely to occur, and have shorter durations and smaller volumes than in predominantly branched systems. Predominantly meshed systems are identified then as more reliable in terms of flooded nodes and flooding volumes.

scholarly journals Measuring Patients′ Satisfaction in For-Profit Orthopedic Hospital

2017 ◽  
Vol 30 (1) ◽  
pp. 16-26
Author(s):  
Jekaterina Kuzmina
Keyword(s):  
Best Practice ◽  
Clinical Results ◽  
Private Hospitals ◽  
Patient’S Satisfaction ◽  
For Profit ◽  
Patients Satisfaction ◽  
Test Methodology ◽  
Orthopedic Hospital ◽  
Valid Instrument ◽  
Overall Performance

Abstract Patients′ satisfaction plays the central role in management of private hospitals, therefore the development of appropriate methodology and its adjustment to specific needs is necessary. The goal of the research is to develop and test methodology for the assessment of patient satisfaction in a private for-profit orthopedic hospital in Latvia that is consistent for results, as it should help to determine potential areas of progress in the coming periods. Moreover, satisfied patients are likely to return, to fulfil medical treatment requirements achieving better clinical results, as well as to recommend the hospital to others thus contributing to better overall performance of the organization. The results of the study show that the developed tool could be a valid instrument for measuring patient’s satisfaction, allowing to improve the existing processes inside the organization, as well as benchmark different segments in the hospital as far as possible and develop best-practice approaches.

Clinical Performance and Nursing Satisfaction of a Transparent Chlorhexidine Gluconate IV Securement Dressing with Peripherally Inserted Central Catheters

2009 ◽  
Vol 14 (4) ◽  
pp. 200-203 ◽  
Author(s):  
Kim Maryniak
Keyword(s):  
Best Practice ◽  
Clinical Performance ◽  
Control Sample ◽  
Bloodstream Infections ◽  
Staff Nurses ◽  
Nursing Satisfaction ◽  
Peripherally Inserted Central Catheters ◽  
Overall Performance ◽  
Convenience Sampling ◽  
Central Catheters

Background: Bloodstream Infections (BSI) caused by central venous catheters, including peripherally inserted central catheters, can result in longer patient stays and increased complications. Using methods of best practice is needed to reduce the occurrence of these infections. Objective: To evaluate both the clinical performance and nursing satisfaction is using the 3M Tegaderm CHG IV Securement Dressing®. Methods: Prospective, controlled, convenience sampling and in a single center, comparing using the 3M Tegaderm CHG IV Securement Dressing® to a regular transparent semi-permeable dressing There were a total of 107 patients in the study sample, and 110 patients in the control sample. Results: The results of the satisfaction survey for the investigational dressing group compared with the control dressing group reflected significant p-values of the following primary efficacy variable (1–5 Likert scale), “Overall performance of dressing” (p=0.019951). Conclusions: The 3M Tegaderm CHG IV Securement Dressing® was easy to apply, able to absorb fluid and mold and conform around the PICC catheters, and rated highly by staff nurses for overall performance of the dressing compared to control dressing.

scholarly journals Operation and maintenance

2021 ◽  
pp. 203-262
Author(s):  
Jakob Benisch ◽  
Björn Helm ◽  
Jean-Luc Bertrand-Krajewski ◽  
Simon Bloem ◽  
Frédéric Cherqui ◽  
...  
Keyword(s):  
Least Squares ◽  
Stormwater Management ◽  
Best Practice ◽  
Health And Safety ◽  
Ordinary Least Squares ◽  
Urban Drainage ◽  
Sewer Systems ◽  
Operation And Maintenance ◽  
Confined Environment ◽  
Discharge Measurements

Abstract This chapter first provides information on general health and safety rules to be applied by operators in monitoring urban drainage and stormwater management (UDSM) systems, especially in the harsh confined environment of underground sewer systems. Second, it presents experience-based key recommendations for best practice and quality in operation, management and maintenance of sensors and installations for rainfall and discharge measurements. In the last part, three numerical methods (ordinary least squares, Williamson least squares, non-linear regression) are presented, with detailed examples of application, to establish calibration functions which are necessary for all sensors used in UDSM monitoring.

Marketing a technical business

2003 ◽  
Vol 3 (1-2) ◽  
pp. 433-440 ◽  
Author(s):  
P. Karbowiak
Keyword(s):  
Customer Satisfaction ◽  
Customer Service ◽  
Best Practice ◽  
Service Providers ◽  
Natural Monopoly ◽  
Water Utilities ◽  
Management Tool ◽  
Service Companies ◽  
Professional Market ◽  
Satisfaction Analysis

Until recently most water utilities have operated as a public service. The market is still predominantly a natural monopoly. The significant infrastructure requirements militate against service duplication and competition. Generally customers do not have the option of changing service providers. With the arrival of competition policy, water utilities have initiated some customer service programmes. However, the driver for this change has been the reporting requirements of the regulator rather than customer focused imperatives. However, there are benefits for water service companies to conduct professional market research focused on customer satisfaction. This paper reviews the concepts of market customer satisfaction analysis. It discusses the shortfalls of generic methodologies which focus on the performance of the service provider rather than the needs and expectations of the customer. The application of Benchmarking or Best Practice, is also reviewed within this context. A conclusion of this paper is that the application of focused, professional customer satisfaction analysis is an effective quality management tool and leads to a better understanding of water services customers’ needs and expectations. The outcome is more effective application of customer service resources, enhanced community perceptions and the achievement of higher levels of customer satisfaction.

scholarly journals Measuring the efficiency of wastewater services through Data Envelopment Analysis

2015 ◽  
Vol 71 (12) ◽  
pp. 1845-1851 ◽  
Author(s):  
A. Guerrini ◽  
G. Romano ◽  
C. Leardini ◽  
M. Martini
Keyword(s):  
Data Envelopment Analysis ◽  
Vertical Integration ◽  
Best Practice ◽  
Water Utilities ◽  
Data Envelopment ◽  
Water Industry ◽  
The European Union ◽  
Scope Economies ◽  
Water And Wastewater ◽  
Danish Water

Efficient water management is a priority in the European Union, since the operational efficiency of many water utilities is very low compared to best practice. Several countries are restructuring the water industry to save costs. Larger-scale operations and vertical integration are promoted to achieve scale and scope economies; however, the literature is not unanimous that such economies exist. There is also little evidence of the effect of customer density on costs. This article offers some insights into this matter, analysing the Danish water industry by a two-stage Data Envelopment Analysis approach to investigate the effects of size, scope and density in the wastewater industry. The results show that the Danish wastewater industry is positively affected by vertical integration and higher population density: firms that serve more than 100 person per km of sewer and combine water and wastewater services achieve better efficiency. Size does not have any significant influence on global efficiency, although technical pure efficiency decreases statistically with firm size.

scholarly journals IWA best practice and performance indicators for water utilities in Serbia: Case study Pirot

2008 ◽  
Vol 6 (1) ◽  
pp. 37-50 ◽  
Author(s):  
Dragan Radivojevic ◽  
Dragan Milicevic ◽  
Borislava Blagojevic
Keyword(s):  
Water Loss ◽  
Best Practice ◽  
Task Force ◽  
Traditional Approach ◽  
Water Utilities ◽  
Basic Principles ◽  
Technical Performance ◽  
System Input ◽  
And Performance

Active water loss management has become one of the primary interests of the water utilities in the world. Due to efforts of the IWA Task Force in the last decade, traditional approach of water loss expression in percentage of system input values has been proven to be misleading in may cases, and new way of performance measuring and benchmarking is proposed. This paper presents the basic principles of this methodology and results of the first step in attempt to approach Serbian water utilities performance according to new standards. Pirot water supply system is used as a case study to estimate pressure reducing impact on technical performance indictor values before introducing active leakage control.

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