Where is the safest, smartest, and most cost effective location to install a containment backflow preventer? If you think it's in a vault or inside a building you may need to think again. Learn about the advantages and disadvantages to each option in this guide on backflow installation.
Backflow Best Practices and Standard Details: Part 2Safe-T-Cover
This presentation focuses on the current backflow preventer placement practices including vaults, indoors and backflow enclosures.
This is the second of a three part series on backflow preventer installation, standard details, and best practices. The series focuses on three key facts: Water utilities are seeking more premise-isolation cross connection control. More containment systems are being specified as RPZ regardless of hazard threshold. The AWWA, ASPE, & the legal community recognize “outside aboveground” as ‘best practice’ for backflow installation.
Part 1: http://www.slideshare.net/CraigCarmon/backflow-best-practices-and-standard-details-part-1
Part 3: http://www.slideshare.net/CraigCarmon/backflow-best-practices-and-standard-details-part-3
Backflow Best Practices and Standard Details: Part 3Safe-T-Cover
This presentation focuses on the increasingly popular move by public water systems to require RPZ backflow preventers on all water lines.
This is the third of a three part series on backflow preventer installation, standard details, and best practices. The series focuses on three key facts: Water utilities are seeking more premise-isolation cross connection control. More containment systems are being specified as RPZ regardless of hazard threshold. The AWWA, ASPE, & the legal community recognize “outside aboveground” as ‘best practice’ for backflow installation.
Part 1: http://www.slideshare.net/CraigCarmon/backflow-best-practices-and-standard-details-part-1
Part 2: http://www.slideshare.net/CraigCarmon/backflow-best-practices-and-standard-details-part-2
Backflow Best Practices and Standard Details: Part 2Safe-T-Cover
This presentation focuses on the current backflow preventer placement practices including vaults, indoors and backflow enclosures.
This is the second of a three part series on backflow preventer installation, standard details, and best practices. The series focuses on three key facts: Water utilities are seeking more premise-isolation cross connection control. More containment systems are being specified as RPZ regardless of hazard threshold. The AWWA, ASPE, & the legal community recognize “outside aboveground” as ‘best practice’ for backflow installation.
Part 1: http://www.slideshare.net/CraigCarmon/backflow-best-practices-and-standard-details-part-1
Part 3: http://www.slideshare.net/CraigCarmon/backflow-best-practices-and-standard-details-part-3
Backflow Best Practices and Standard Details: Part 3Safe-T-Cover
This presentation focuses on the increasingly popular move by public water systems to require RPZ backflow preventers on all water lines.
This is the third of a three part series on backflow preventer installation, standard details, and best practices. The series focuses on three key facts: Water utilities are seeking more premise-isolation cross connection control. More containment systems are being specified as RPZ regardless of hazard threshold. The AWWA, ASPE, & the legal community recognize “outside aboveground” as ‘best practice’ for backflow installation.
Part 1: http://www.slideshare.net/CraigCarmon/backflow-best-practices-and-standard-details-part-1
Part 2: http://www.slideshare.net/CraigCarmon/backflow-best-practices-and-standard-details-part-2
Water supplies in the Permian Basin are tightening. 240 counties in Texas are now designated as primary natural disaster areas due to drought. Water recycling technologies are numerous with rapid innovation.We’ve catalogued over 50 different processes used to purify wastewater. There is no one-size-fits-all solution. Freshwater availability, waste disposal costs, and fracturing fluid specifications are just a sample of factors that influence decisions. In this presentation, delivered at the DUG Permian Basin Conference on May 21, 2014, Wilson Perumal & Company Consultant John Hughes presents key elements to consider when developing a comprehensive water management strategy.
Presentation on Van Wert County's experience with the use of the Presby Enviro-Septic system as an alternative to conventional onsite sewage treatment systems. This presentation was given at a recent sewage treatment system contractor meeting in Richland County, Ohio.
Analysis of groundwater quality of visnagar taluka, mehasana district gujaratvishvam Pancholi
Ground water is the principal source of drinking water in our country and indispensable source of our life. The quality of water is of vital concern for mankind, since it is directly linked to human welfare. The present work investigated various physiochemical parameters of villages of Visnagar taluka of Mehsana district, Gujarat. Because of north Gujarat is affected by various water quality parameters like fluoride is high in many parts of north Gujarat. A total of 50 water samples will be collected from the tube wells for post-monsoon season and analyzed for the various physiochemical parameters like pH, electrical conductivity (EC), nitrate (NO3-), magnesium (Mg2+), Calcium (Ca2+), hardness, and alkalinity, sulphates (SO42-), chloride (Cl-), sodium (Na+), potassium (K+), Fluoride (F-) and total dissolved solids (TDS). The result were compared with standards prescribed by IS: 10500(2012). It was found that the ground water contaminated at 16 sampling sites namely Khadalpur, Chhogala, Sunshi, Denap, Jetalvasana, Tarabh, Visnagar Rural, Bhalak, Kamalpur (GOT), Kamalpur (KHA), Kansa, Magaroda, Pudgam, Sadutala, Thalota, Vadu while other 34 sampling sites showed physiochemical parameters within the water quality standards and quality of water is good so it is fit for drinking uses.
Are water utilities inheriting professional risk from local engineering consultants? Allowing unsafe placement of Backflow preventers invites law suits through subrogation.
Aspe nat'l convention let civildsncontmtsys slideshareRandy Holland
Containment (Premise Isolation) backflow systems should be specified by civil engineers rather than plumbing engineers due to sudden flood water flows expertise and irrational risk for indoor placement.
Presentation given at the San Diego County Water Authority's Special Board of Directors' Meeting on Nov. 15, 2012. To view agenda visit www.sdcwa.org/meetings-and-documents
Are Water Utilities Inheriting Risk from Local Consultants?Safe-T-Cover
The water engineering community has been struggling with new professional liability risk involving the location of premise isolation backflow preventer systems; Not because of new design practices, but because of new information about the old practices.
And with this new risk realization comes a new interested party: The insurance company. Because of this very public commentary from experts and leading groups, casualty carriers, through subrogation, have new weapons for damage recovery. And anytime the accused designer is able to demonstrate that local government contributed, whether materially or passively, to the poor design, the water district and/or building authority may be at risk for the liability.
How does the water utility avoid being named responsible? Use up to date standard details that address the risk and show you did not contribute.
THIS SLIDESHARE WILL COVER:
1.What are the risks associated with backflow preventer installation?
2.Can that affect water jurisdictions?
3.National survey of civil and plumbing engineers
4.Standard details, best practices, and how to get your district up to date
Water supplies in the Permian Basin are tightening. 240 counties in Texas are now designated as primary natural disaster areas due to drought. Water recycling technologies are numerous with rapid innovation.We’ve catalogued over 50 different processes used to purify wastewater. There is no one-size-fits-all solution. Freshwater availability, waste disposal costs, and fracturing fluid specifications are just a sample of factors that influence decisions. In this presentation, delivered at the DUG Permian Basin Conference on May 21, 2014, Wilson Perumal & Company Consultant John Hughes presents key elements to consider when developing a comprehensive water management strategy.
Presentation on Van Wert County's experience with the use of the Presby Enviro-Septic system as an alternative to conventional onsite sewage treatment systems. This presentation was given at a recent sewage treatment system contractor meeting in Richland County, Ohio.
Analysis of groundwater quality of visnagar taluka, mehasana district gujaratvishvam Pancholi
Ground water is the principal source of drinking water in our country and indispensable source of our life. The quality of water is of vital concern for mankind, since it is directly linked to human welfare. The present work investigated various physiochemical parameters of villages of Visnagar taluka of Mehsana district, Gujarat. Because of north Gujarat is affected by various water quality parameters like fluoride is high in many parts of north Gujarat. A total of 50 water samples will be collected from the tube wells for post-monsoon season and analyzed for the various physiochemical parameters like pH, electrical conductivity (EC), nitrate (NO3-), magnesium (Mg2+), Calcium (Ca2+), hardness, and alkalinity, sulphates (SO42-), chloride (Cl-), sodium (Na+), potassium (K+), Fluoride (F-) and total dissolved solids (TDS). The result were compared with standards prescribed by IS: 10500(2012). It was found that the ground water contaminated at 16 sampling sites namely Khadalpur, Chhogala, Sunshi, Denap, Jetalvasana, Tarabh, Visnagar Rural, Bhalak, Kamalpur (GOT), Kamalpur (KHA), Kansa, Magaroda, Pudgam, Sadutala, Thalota, Vadu while other 34 sampling sites showed physiochemical parameters within the water quality standards and quality of water is good so it is fit for drinking uses.
Are water utilities inheriting professional risk from local engineering consultants? Allowing unsafe placement of Backflow preventers invites law suits through subrogation.
Aspe nat'l convention let civildsncontmtsys slideshareRandy Holland
Containment (Premise Isolation) backflow systems should be specified by civil engineers rather than plumbing engineers due to sudden flood water flows expertise and irrational risk for indoor placement.
Presentation given at the San Diego County Water Authority's Special Board of Directors' Meeting on Nov. 15, 2012. To view agenda visit www.sdcwa.org/meetings-and-documents
Are Water Utilities Inheriting Risk from Local Consultants?Safe-T-Cover
The water engineering community has been struggling with new professional liability risk involving the location of premise isolation backflow preventer systems; Not because of new design practices, but because of new information about the old practices.
And with this new risk realization comes a new interested party: The insurance company. Because of this very public commentary from experts and leading groups, casualty carriers, through subrogation, have new weapons for damage recovery. And anytime the accused designer is able to demonstrate that local government contributed, whether materially or passively, to the poor design, the water district and/or building authority may be at risk for the liability.
How does the water utility avoid being named responsible? Use up to date standard details that address the risk and show you did not contribute.
THIS SLIDESHARE WILL COVER:
1.What are the risks associated with backflow preventer installation?
2.Can that affect water jurisdictions?
3.National survey of civil and plumbing engineers
4.Standard details, best practices, and how to get your district up to date
A Collection of over 50 questions and answers
from Contech’s Webinar Series on Rainwater Harvesting as a Runoff Reduction Tool. Topics include design, pre-treatment, cisterns, cost, maintenance and regulations.
Green infrastructure policy for stormwater infiltrationEvan Pratt
Viewers will get an overview of policy changes to require infiltration as a strategy to address stormwater quality and quantity in Washtenaw County, along with a link to a wide range of resources including the 150+ page regulations and case studies that show cost savings for greenfield developments. Design storms have increased nearly 20% in volume in the past 30 years in the target area, so existing infrastructure no longer meets the needs it was designed for. Older infrastructure was already overwhelmed.
A presentation about protecting clean water during construction projects. Presented by Robert Roseen of Geosyntec Consulting during the Buzzards Bay Coalition's 2014 Decision Makers Workshop series. Learn more at www.savebuzzardsbay.org/DecisionMakers
A DIFFERENT PERSPECTIVE ON STORAGE TANK MANAGEMENT. REGULATIONS HELP MITIGATE RISK TO THE PUBLIC AND THE ENVIRONMENT. THESE RISKS ALSO HAVE A HEFTY FINANCIAL PENALTY ASSOCIATED WITH THEM. HOW SHOULD RISK MITIGATION BE PRIORITIZED?
PRESENTED AT THE 2014 NEW ENGLAND UST & SHOP-FABRICATED STORAGE TANK CONFERENCE WORCESTER, MA, DECEMBER 4, 2014
Final project report on grocery store management system..pdfKamal Acharya
In today’s fast-changing business environment, it’s extremely important to be able to respond to client needs in the most effective and timely manner. If your customers wish to see your business online and have instant access to your products or services.
Online Grocery Store is an e-commerce website, which retails various grocery products. This project allows viewing various products available enables registered users to purchase desired products instantly using Paytm, UPI payment processor (Instant Pay) and also can place order by using Cash on Delivery (Pay Later) option. This project provides an easy access to Administrators and Managers to view orders placed using Pay Later and Instant Pay options.
In order to develop an e-commerce website, a number of Technologies must be studied and understood. These include multi-tiered architecture, server and client-side scripting techniques, implementation technologies, programming language (such as PHP, HTML, CSS, JavaScript) and MySQL relational databases. This is a project with the objective to develop a basic website where a consumer is provided with a shopping cart website and also to know about the technologies used to develop such a website.
This document will discuss each of the underlying technologies to create and implement an e- commerce website.
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
Industrial Training at Shahjalal Fertilizer Company Limited (SFCL)MdTanvirMahtab2
This presentation is about the working procedure of Shahjalal Fertilizer Company Limited (SFCL). A Govt. owned Company of Bangladesh Chemical Industries Corporation under Ministry of Industries.
Forklift Classes Overview by Intella PartsIntella Parts
Discover the different forklift classes and their specific applications. Learn how to choose the right forklift for your needs to ensure safety, efficiency, and compliance in your operations.
For more technical information, visit our website https://intellaparts.com
Sachpazis:Terzaghi Bearing Capacity Estimation in simple terms with Calculati...Dr.Costas Sachpazis
Terzaghi's soil bearing capacity theory, developed by Karl Terzaghi, is a fundamental principle in geotechnical engineering used to determine the bearing capacity of shallow foundations. This theory provides a method to calculate the ultimate bearing capacity of soil, which is the maximum load per unit area that the soil can support without undergoing shear failure. The Calculation HTML Code included.
Automobile Management System Project Report.pdfKamal Acharya
The proposed project is developed to manage the automobile in the automobile dealer company. The main module in this project is login, automobile management, customer management, sales, complaints and reports. The first module is the login. The automobile showroom owner should login to the project for usage. The username and password are verified and if it is correct, next form opens. If the username and password are not correct, it shows the error message.
When a customer search for a automobile, if the automobile is available, they will be taken to a page that shows the details of the automobile including automobile name, automobile ID, quantity, price etc. “Automobile Management System” is useful for maintaining automobiles, customers effectively and hence helps for establishing good relation between customer and automobile organization. It contains various customized modules for effectively maintaining automobiles and stock information accurately and safely.
When the automobile is sold to the customer, stock will be reduced automatically. When a new purchase is made, stock will be increased automatically. While selecting automobiles for sale, the proposed software will automatically check for total number of available stock of that particular item, if the total stock of that particular item is less than 5, software will notify the user to purchase the particular item.
Also when the user tries to sale items which are not in stock, the system will prompt the user that the stock is not enough. Customers of this system can search for a automobile; can purchase a automobile easily by selecting fast. On the other hand the stock of automobiles can be maintained perfectly by the automobile shop manager overcoming the drawbacks of existing system.
Democratizing Fuzzing at Scale by Abhishek Aryaabh.arya
Presented at NUS: Fuzzing and Software Security Summer School 2024
This keynote talks about the democratization of fuzzing at scale, highlighting the collaboration between open source communities, academia, and industry to advance the field of fuzzing. It delves into the history of fuzzing, the development of scalable fuzzing platforms, and the empowerment of community-driven research. The talk will further discuss recent advancements leveraging AI/ML and offer insights into the future evolution of the fuzzing landscape.
CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
An inspection had shown that a significant amount of hot flue gas was bypassing the boiler tubes, where the heat was supposed to be transferred.
R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
Vaccine management system project report documentation..pdfKamal Acharya
The Division of Vaccine and Immunization is facing increasing difficulty monitoring vaccines and other commodities distribution once they have been distributed from the national stores. With the introduction of new vaccines, more challenges have been anticipated with this additions posing serious threat to the already over strained vaccine supply chain system in Kenya.
Vaccine management system project report documentation..pdf
Waterworks Best Practices: Containment Backflow Preventer Design & Placement
1. …poorly understood
by designers
Best Practices: Containment Backflow Preventer Placement
Best Practices:
Containment Backflow Preventer
Design & Placement
2. Best Practices: Containment Backflow Preventer Placement
“…. The return of any water to the public
water system after the water has been
used for any purpose on the customer’s
premises or within the customer’s piping
system is unacceptable and opposed by
AWWA. …”
3. Bottom Line for
the future:
Best Practices: Containment Backflow Preventer Placement
More Containment
More RPZs
More Outdoor
Aboveground Installations
4. Why place a BFP outside?
Best Practices: Containment Backflow Preventer Placement
1. RPZs are an indoor flood hazard
5. “Before an RPZ is located, consideration should be
given to both how much water will be discharged,
and where it will drain. Consideration must be
given to the drain system to assure the drainage
system can handle the load. If a drain is not
capable of accepting the flow, other choices as to
the location of the valve, such as outside in a
heated enclosure, should be made.”
-2006 ASPE Plumbing
Engineering Design Handbook, vol 2, p 70
Best Practices: Containment Backflow Preventer Placement
Why outside?
6. Why outside?
Inside a building can be a major liability.
Best Practices: Containment Backflow Preventer Placement
7. Where to place a BFP?
Best Practices: Containment Backflow Preventer Placement
9. 2. Revenue & prop
value: Indoor RPZs
Reduce the rentable
square footage of a
building reducing
revenue & property
value
Why outside?
Best Practices: Containment Backflow Preventer Placement
10. Charlotte,
NC: 32 SF
Columbus,
OH: 36 SF
Suffolk Cty,
NY: 33.3 SF
Arlington,
TX: 32 SF
How much space is lost?
Average: 33.325 SF
Annual Rent Value: $999.75
(based on Class A Office @ $30 psf)
25-year Cash Flows: $34,149.22
(based on 2.5% inflation)
Net Present Value: $12,156.48
(based on 9% discount rate)
Best Practices: Containment Backflow Preventer Placement
11. Net Present Value - $12,156.48
“If you pay me this today, I am indifferent to the loss
of those income streams over the next 25 years”
QUESTION:
Will placing the system inside save
$12,156.48 over any other method?
… it depends on how much it costs to put it outside.
What’s that space worth?
Best Practices: Containment Backflow Preventer Placement
12. Aboveground heated enclosure for 3” BPA with heat.
$1,000
$1,120
$1,800
$3,920
$3,266
$1,200
$1,800
$6,266
Best Practices: Containment Backflow Preventer Placement
Option A:
Use conventional model
Watts 957 NRS
Option B:
Use new ”n-type” model
Watts 957N NRS
14. 3. Fire safety:
Indoor water
resources for fires
unnecessarily add
risk to firefighters
Why outside?
Best Practices: Containment Backflow Preventer Placement
15. 1. RPZs are not
allowed to be
installed in
Vaults
Why not a vault?
Best Practices: Containment Backflow Preventer Placement
16. 2. ConfinedSpaceHazards:
Vaults are dangerous
and expensive to
maintain and repair.
New OSHA Guidelines, May 4, 2015:
Google: Pre/Post-Entry Information Exchange Duties of Host Employers and Controlling Contractors
Why not a vault?
Best Practices: Containment Backflow Preventer Placement
17. Best Practices: Containment Backflow Preventer Placement
Why not a vault?
3. Flooded vaults violate the International Plumbing Code.
608.1 General.
A potable water supply system shall be
designed, installed, and maintained in such a
manner so as to prevent contamination from
nonpotable liquids, solids or gases being
introduced into the potable water system
through cross connections or any piping
connections to the system.
- International Plumbing Code 2013
18. 4. Aboveground fire BPA
enclosures with FDCs
are safest, most
efficient solution for
firefighters
Why not a vault?
Best Practices: Containment Backflow Preventer Placement
19. 5. Retrofits:
Water use hazard
changes over time –
whether by changing
tenant or changing
guidelines – force
enclosure retrofits and
leave vaults empty
Why not a vault?
Best Practices: Containment Backflow Preventer Placement
20. - Plumbing Standards Magazine, Fall 2009
“An outdoor, aboveground BFP installation may be the
best way to
1) reduce the owner’s exposure to damage caused by
flooding....and the corresponding water contamination
caused by a cross-connection; and
2) reduce the legal liability of the design engineers, the
installers, and the certified testers whose professional
actions, in part, may have otherwise caused the flooding
harm.
The water industry has a nationally accepted design
criteria in ASSE’s Standard-1060 to protect these
installations. It’s a win-win-win ‘insurance policy’.”Douglas Cregor, Esq.
Best Practices: Containment Backflow Preventer Placement
Why an Enclosure?
6. Insurance Policy
31. Fort Worth, TX
Alpine
Bedford
Boerne
Carrollton
Cleburne
College Station
Denison
Farmington
Farris
Franklin
Grand Prairie
Haltom
Texarkana
Waco
Waskom
White Settlement
Addison
Arlington
Buda
Cedar Hill
Colleyville
Crowley
Denton
Duncanville
Fort Worth
Franklin
Gainesville
Highland Village
Midlothian
Roanoke
Round Rock
Saginaw
Same language added to muni code in past 5 years
Best Practices: Containment Backflow Preventer Placement
34. Denver did
Best Practices: Containment Backflow Preventer Placement
What Can Cities/Counties Do?
1. Adopt standard details consistent with best practices
36. Charlotte did
Best Practices: Containment Backflow Preventer Placement
What Can Cities/Counties Do?
1. Adopt standard details consistent with best practices
37. Las Vegas did too
Best Practices: Containment Backflow Preventer Placement
38. Best Practices: Containment Backflow Preventer Placement
Tell DFW to Follow their Lead
The city of Arlington did in February 2016