Special purpose simulation for trenchless pipe replacement

2020 ◽  
pp. 355-360
Author(s):  
J.S. Lueke ◽  
S.T. Ariaratnam
Keyword(s):  
Pipe Replacement

scholarly journals Preventing leaching from lead water pipes with electrochemistry: an exploratory study

2021 ◽  
Author(s):  
Gabriel Pablo Lobo ◽  
Ashok Gadgil
Keyword(s):  
Drinking Water ◽  
Exploratory Study ◽  
Water Distribution ◽  
Water Systems ◽  
Effective Solution ◽  
Water Pipes ◽  
The Us ◽  
Public Drinking Water ◽  
Lead Leaching ◽  
Pipe Replacement

Toxic levels of lead leaching from ageing water distribution infrastructure affect over 5,000 public drinking water systems in the US. Pipe replacement, the most effective solution to this problem, is...

scholarly journals Monitoring the quality of sewer renewal using polymeric systems in Sweden

2019 ◽  
Vol 14 (3) ◽  
pp. 605-613 ◽  
Author(s):  
Parastou Kharazmi
Keyword(s):  
Quality Control ◽  
Quality Assurance ◽  
Field Studies ◽  
Infrastructure Investment ◽  
Sufficient Information ◽  
Polymeric Systems ◽  
Water And Wastewater ◽  
Pipe Replacement ◽  
Different Parts

Abstract Water and wastewater pipes require some of the highest levels of infrastructure investment; they also deteriorate faster than they can be repaired. The use of alternative rehabilitation technologies, which are quicker and less expensive than pipe replacement, has therefore increased significantly in recent years, worldwide. Field studies on relined wastewater pipes removed from buildings in different parts of Sweden revealed the existence of a variety of common defects, most of which could have been prevented by better installation. Increased quality-focused monitoring could help to ensure that relined pipes reach their expected service life, while comprehensive documentation could assist in providing sufficient information to facilitate progress in the field. This paper includes a brief overview of the technologies used in Sweden, current quality control practices, repeated observed defects related to installation, crucial steps that affect final quality, and recommendations to be considered in the contexts of detailed quality control and quality assurance procedures.

Weighing Lead Pipe Replacement

Opflow ◽  
2003 ◽  
Vol 29 (1) ◽  
pp. 12-14
Author(s):  
Glen R. Boyd ◽  
Gregory J. Kirmeyer ◽  
Michael Caprara
Keyword(s):  
Lead Pipe ◽  
Pipe Replacement

scholarly journals Pipe replacement by age only, how misleading could it be?

2018 ◽  
Vol 19 (3) ◽  
pp. 846-854 ◽  
Author(s):  
M. A. Pardo ◽  
J. Valdes-Abellan
Keyword(s):  
Water Distribution ◽  
Energy Savings ◽  
Distribution Networks ◽  
Water Distribution Networks ◽  
Water Utility ◽  
Efficient Management ◽  
Utility Companies ◽  
Pipe Replacement ◽  
Energy Audits ◽  
The Impact

Abstract Traditional methods for prioritizing the renewal of water are based on heuristic models, such as the number of breaks per length, rule-of-thumb, and records held by the water utility companies. Efficient management of water distribution networks involves factoring in water and energy losses as the key criteria for planning pipe renewal. Prioritizing the replacement of a pipe according to the highest value of unit headloss due to ageing does not consider the impact on water and energy consumption for the whole network. Thus, this paper proposes a methodology to prioritize pipe replacement according to water and energy savings per monetary unit invested – economic prioritization. This renewal plan shows different results if comparing with replacing pipelines with regard to age and it requires calculating water and energy audits of the water distribution networks. Moreover, the required time to recover the investment performed needs to be calculated. The methodology proposed in this work is compared with the unit headloss criterion used in a real water-pressurized network. The results demonstrate that using the unit headloss criterion neither water, energy nor the investment is optimized. Significant water and energy savings are not fully exploited.

State of Watermain Infrastructure: A Canadian Case Study using Historic Pipe Break Datasets

2020 ◽  
Author(s):  
Brett Snider ◽  
Edward McBean
Keyword(s):  
Cast Iron ◽  
Cross Sectional Survey ◽  
Cross Sectional ◽  
The Past ◽  
Survey Results ◽  
Pipe Break ◽  
Pipe Replacement ◽  
Better Than ◽  
Rate Threshold

Over the last two decades, a variety of reports have suggested that watermains in Canada are deteriorating, and break rates are increasing. However, these reports are often limited as the years of break records being utilized are brief; this paper revisits those assessments using over forty-five years of break records and shows that three of the five utilities investigated are experiencing significant decreases in break rates over the past 10 years while the two other utilities are maintaining consistent break rates. These results indicate that these utilities are effectively managing their watermain infrastructure, and suggest watermain infrastructure throughout Canada may be performing better than suggested by cross-sectional survey results. Analyses indicate that on average, 22% of the watermains analysed have exceeded the 0.125 brk/km/yr break rate threshold and may be considered for pipe replacement / rehabilitation. In particular 50% of cast iron pipes installed post-WWII have exceeded a break rate threshold of 0.125 brks/km/yr, suggesting large pipe replacement/rehabilitation of this pipe cohort is required.

Effort in reducing unaccountable water and economic consideration

2015 ◽  
Vol 10 (1) ◽  
pp. 50-58 ◽  
Author(s):  
I. Dimaano
Keyword(s):  
Water Pressure ◽  
Service Level ◽  
Management Program ◽  
Total System ◽  
Water Losses ◽  
Piped Water ◽  
Metro Manila ◽  
Non Revenue Water ◽  
Pipe Replacement ◽  
High Level

In 2007, Maynilad Water Services, Inc. (Maynilad), the private water and wastewater service provider of the West Zone of Metro-Manila (Philippines), had an enormous challenge ahead: to achieve 100% service coverage in the coming few years with basically no additional water resources; to connect an additional 3 million people still without access to piped water; and to improve the service level to the existing customers. The only way to meet this demand is to reduce water losses from its deteriorated pipe network. Water balance made in that year showed significant total non-revenue water of 1,500 million liters per day which is equivalent to 66% of the total system input volume. Maynilad recognized that to be financially viable, it needs to address the non-revenue water problem. Thus, the Central NRW team was immediately created in 2008 and was tasked to lead Maynilad's ambitious NRW reduction and management program, which is considered one of the largest NRW projects in the world in terms of amount of water losses and the scope and magnitude of works involved to bring down the high level of NRW. Maynilad's NRW program involves breaking up the whole network into hydraulically isolated and measurable district metered areas (DMA); monitoring and diagnosing each DMA; developing well-trained and fully equipped leak detection teams to find surfacing and non-surfacing leaks; active leakage control; pressure management; selective pipe replacement/rehabilitation; closing of illegal connections and decommissioning of old distribution pipes; integrated meter management; and a sustained capacity building of NRW teams. By the end of 2013, 6 years after implementing the NRW program, Maynilad was able to recover more than 700 MLD and managed to bring down the NRW level to 39%. The water that was saved in turn was used to supply additional 400,000 new customers in the expansion areas and generally improved the level of service of the existing customers by providing higher water pressure and longer water availability. These translated to an increase in billed volume by 56 and 107% increase in total revenues for the company.

Sign in / Sign up

Export Citation Format

Share Document