Water Treatment Plant Seismic Risk Assessment for the Joint Water Commission, Hillsboro, Oregon

TCLEE 2009 ◽  
2009 ◽  
Author(s):  
Donald Ballantyne ◽  
Todd Perimon ◽  
Peter Martins
Keyword(s):  
Risk Assessment ◽  
Water Treatment ◽  
Seismic Risk ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Seismic Risk Assessment

scholarly journals Hazard Identification and Risk Assessment in Water Treatment Plant considering Environmental Health and Safety Practice

2018 ◽  
Vol 31 ◽  
pp. 06011
Author(s):  
Fajrul Falakh ◽  
Onny Setiani
Keyword(s):  
Risk Assessment ◽  
Water Treatment ◽  
Occupational Safety ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Hazard Identification ◽  
Occupational Safety And Health ◽  
Control Measures ◽  
Safety And Health ◽  
Environment Control

Water Treatment Plant (WTP) is an important infrastructure to ensure human health and the environment. In its development, aspects of environmental safety and health are of concern. This paper case study was conducted at the Water Treatment Plant Company in Semarang, Central Java, Indonesia. Hazard identification and risk assessment is one part of the occupational safety and health program at the risk management stage. The purpose of this study was to identify potential hazards using hazard identification methods and risk assessment methods. Risk assessment is done using criteria of severity and probability of accident. The results obtained from this risk assessment are 22 potential hazards present in the water purification process. Extreme categories that exist in the risk assessment are leakage of chlorine and industrial fires. Chlorine and fire leakage gets the highest value because its impact threatens many things, such as industrial disasters that could endanger human life and the environment. Control measures undertaken to avoid potential hazards are to apply the use of personal protective equipment, but management will also be better managed in accordance with hazard control hazards, occupational safety and health programs such as issuing work permits, emergency response training is required, Very useful in overcoming potential hazards that have been determined.

scholarly journals Risk Assessment from Catchment to Consumers as Framed in Water Safety Plans: A Study from Maiduguri Water Treatment Plant, North East Nigeria

2019 ◽  
Vol 10 (10) ◽  
pp. 1373-1390
Author(s):  
Mohammed Mustapha ◽  
M. K. C. Sridhar ◽  
A. O. Coker ◽  
Ayotunde Ajayi ◽  
Abubakar Suleiman
Keyword(s):  
Risk Assessment ◽  
Water Treatment ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Water Safety ◽  
North East ◽  
Water Safety Plans

Scenario-based quantitative microbial risk assessment to evaluate the robustness of a drinking water treatment plant

2016 ◽  
Vol 51 (2) ◽  
pp. 81-96 ◽  
Author(s):  
Mohamed A. Hamouda ◽  
William B. Anderson ◽  
Michele I. Van Dyke ◽  
Ian P. Douglas ◽  
Stéphanie D. McFadyen ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Drinking Water ◽  
Water Treatment ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Operating Conditions ◽  
Quantitative Microbial Risk Assessment ◽  
Microbial Risk Assessment ◽  
Microbial Risk ◽  
Treatment Processes

While traditional application of quantitative microbial risk assessment (QMRA) models usually stops at analyzing the microbial risk under typical operating conditions, this paper proposes the use of scenario-based risk assessment to predict the impact of potential challenges on the expected risk. This study used a QMRA model developed by Health Canada to compare 14 scenarios created to assess the increase in risk due to potential treatment failures and unexpected variations in water quality and operating parameters of a water treatment plant. Under regular operating conditions, the annual risk of illness was found to be substantially lower than the acceptable limit. Scenario-based QMRA was shown to be useful in demonstrating which hypothetical treatment failures would be the most critical, resulting in an increased risk of illness. The analysis demonstrated that scenarios incorporating considerable failure in treatment processes resulted in risk levels surpassing the acceptable limit. This reiterates the importance of robust treatment processes and the multi-barrier approach voiced in drinking water safety studies. Knowing the probability of failure, and the risk involved, allows designers and operators to make effective plans for response to treatment failures and/or recovery actions involving potential exposures. This ensures the appropriate allocation of financial and human resources.

Cryptosporidium monitoring system at a water treatment plant, based on waterborne risk assessment

2004 ◽  
Vol 50 (1) ◽  
pp. 293-299 ◽  
Author(s):  
Y. Masago ◽  
K. Oguma ◽  
H. Katayama ◽  
T. Hirata ◽  
S. Ohgaki
Keyword(s):  
Risk Assessment ◽  
Water Treatment ◽  
Negative Binomial ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Water Volume ◽  
Risk Of Infection ◽  
Monitoring Method ◽  
Daily Monitoring ◽  
Annual Risk

The water volume required for daily monitoring of Cryptosporidium (which can statistically ensure an annual risk of infection below 10-4), was assessed by evaluating the applicability of the Poisson lognormal (PLN) distribution in microbial risk assessment. PLN showed as good a fit to the observed data as to the negative binomial distribution. From the estimated PLN distributions for the source and finished water, the efficacy of the oocyst removal by the conventional water treatment process was estimated to follow log-normal distribution (median = 3.16 log10, 95% CI = 4.27-2.05 log10). The 365 consecutive negative results of daily monitoring for 180 L of finished water were found to be statistically equivalent to the annual risk of infection below 10-4. This research also suggested the possibility of applying a qualitative detection method, such as CC-PCR, as a routine monitoring method for the quantitative risk management.

scholarly journals Water Supply System Description and Risk Assessment in Brikama Water Treatment Plant System, West Coast Region, Gambia: WHO Water Safety Plan Based Approach

2021 ◽  
pp. 7-19
Author(s):  
Amadou Barrow ◽  
Baboucarr Corr ◽  
M. Mustapha ◽  
Rex A. Kuye ◽  
M. K. C. Sridhar
Keyword(s):  
Risk Assessment ◽  
Water Treatment ◽  
Water Supply ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Supply System ◽  
Water Safety ◽  
Safety Plan ◽  
Water Safety Plan ◽  
Coast Region

Background: Better water quality, improved sanitation and sound water resource management will improve public health and economic development in low-income countries. Water safety plan-based risk assessment and risk management from catchment to consumers are the modern and efficient approaches to safe drinking water supply established by World Health Organization. Thus, this paper aimed to assess risk from catchment level to consumers in the community of Brikama. Methods: This study report assessments of risk or hazards from catchment to consumers in Brikama Water Treatment Plant (BWTP), West Coast Region, The Gambia. The various means of data collection used include water quality monitoring, visual field inspection and questionnaire survey to explore data on where the water supply system goes wrong from catchment to consumers, so as to provide an improvement plan. Results: Overall, the day-to-day administration of services at BWTP was very impressive. The fencing of all the 17 boreholes at catchment sites has drastically reduced the risk of contamination including treatment systems and distribution lines. There are less risks observed and constant monitoring of the system was ensured. However, at the consumer end, there are some risks with poor practices associated with water handling, storage and hygiene measures at the household level. Some still use some unclean 20-liter containers to store water and indiscriminately kept drinking cups on the floor and unclean surfaces, and 50% lacked WASH knowledge related to water treatment, such as boiling and filtration at households. The overall perception of water storage, sanitation and hygiene practices could be rated moderately good. Conclusion: The overall findings of this study have shown tremendous achievement in the government's commitment to providing potable water to the people in Brikama Local Government Area. WASH education in the study area is recommended to avoid waterborne disease infections.

DESIGNING OF REMOTE TERMINAL UNIT (RTU) FOR MEASUREMENT OF pH IN WATER TREATMENT PLANT

2019 ◽  
Vol 10 (1) ◽  
pp. 16
Author(s):  
V. MANE-DESHMUKH PRASHANT ◽  
B. MORE ASHWINI ◽  
B. P. LADGAOKAR ◽  
S. K. TILEKAR ◽  
◽  
...  
Keyword(s):  
Water Treatment ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Terminal Unit ◽  
Remote Terminal ◽  
Remote Terminal Unit
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