This BSA becomes a Charlotte Water backflow permit request to install the backflow preventer. When you run a busy restaurant, there a few general indicators of a broken backflow preventer you need to watch for. To protect against chemical and biological contamination of your water supply, backflow preventer testing and inspection are required by the National Fire Protection Associationand usually your local authority having jurisdiction (AHJ). A reliable and up-to-date source of codes. When you work with a company that provides all fire and water services, it is convenient to test them along with your other regularly scheduled NFPA fire protection and safety inspections. Where multiple sprinkler systems are downstream of a backflow preventer, all drain valves and test connections should be opened simultaneously to generate the maximum flow rate possible. Assessing valves for proper and adequate operation. Backflow Inspection: for each inspection required for newly installed, relocated, or replacement backflow installations. There was an exception provided that when sufficient size outlets werent available to flow the system demand, the test was to be conducted at the maximum flow rate possible. endstream endobj 501 0 obj <. An internal inspection must be performed at least once every five years to ensure the internal components are in good condition, move freely and operate correctly. In other words, if the means to flow the system demand through the backflow preventer isnt provided, the forward-flow test should be conducted by flowing as much water as possible through the device. Each year I have received great service from the office staff that schedules these inspections all the way to the service technicians that come out to perform these inspections. In circumstances where the backflow prevention device should be inspected annually, be sure to partner with a backflow trained and licensed professional who has plenty of experience in the area. First, each one had to be tested annually for backflow capabilities. The current 2020 edition of NFPA 25 includes the following requirements related to the periodic inspection, testing and maintenance of backflow preventers: A weekly inspection is required for reduced-pressure backflow assemblies to ensure the differential-sensing valve relief port isnt continuously discharging. In some places, such as Ohio, businesses (and some residences) with commercial sprinkler systems are forced to have their backflow prevention assemblies tested annually by a certified backflow inspector. Now that you know how vital restaurant water backflow preventers and cross-connection devices are to the safety of your customers, staff, and business, you can see why AIE recommends backflow prevention inspectionsoccur more often than backflow inspection requirements. This potential problem is whybackflow testing is crucial for your restaurants or business. 40 PVC (conforming to ASTM D1785, pressure rated for water, using 1120 PVC compounds). The flow rate (gpm), the inlet pressure (psi) and the outlet pressure (psi) had to be measured so the friction loss across the backflow device could be calculated. The appendix of NFPA 25 explained that the forward-flow test could be accomplished by flowing water through a yard hydrant, a fire pump test header or standpipe hose connections, through the fire department connection after reversing the check valve, or through a small hand hose or other outlets that will discharge sufficient flow. Installation requirements and standard details are available online. However, sometimes a pressure change in the line can occur from a water main break, power outage, or an open fire hydrant, leaving the potential for water to flow backwards and seep into the main water supply line. Both include a mechanical backflow preventer essentially, a physical barrier to the backflow. In the 1998 edition, the requirement to calculate the friction loss across the device was deleted. Charlotte Water will be assessing fees on projects which trigger compliance enforcement of Article IV of Chapter 23, Charlotte City Code.
Backflow preventers should be visually inspected daily and monthly to ensure pressure detectors, control valves, and double check valves are in proper working order and set correctly. Pollution of Restaurant Water Systems. Below-ground Installations requires a vault with a concrete or stone bottom, All vaults must have drains according to Charlotte Water requirements, Make sure you meet all minimum required clearances, For Reduced Pressure Principle Assemblies: Installed upright horizontal - aboveground outside zoning setback according to Charlotte Water standard details; Min.
Inspect and test after any repair, replacement, or relocation of the backflow prevention assembly. 2. Rapidly and efficiently calculate project parameters. It will be important to coordinate activities to minimize conflicts with the open ditch. Questions are constantly being raised on how to perform this test on a sprinkler system that doesnt include a test header, as a fire pump does, or hose connections, as a standpipe system. For many years, the separation between the stagnant water in a sprinkler system and a potable water supply was accomplished by a single check valve on the fire protection system's water supply line. One method commonly used before exceptions were added to the standard was to drain the system down, reverse the check valve on the fire department connection and flow out through the FDC. Both of these suggestions are relatively expensive to install if not included in the original system installation.
Code Enforcement will inspect the work and release the permit holds it controls. Therefore, you can save time and money by hiring AIEs sprinkler inspector to also inspect your backflow preventers when performing your annual certifications. Highlight differences between any two building codes. As part of the permitting and/or meter application process with Charlotte Water, a Backflow Service Application (BSA) will be required to be completed and returned with appropriate documents and/or fees. To inquire about obtaining approval and/or permits from Mecklenburg County Code Enforcement Department, call Get everyone on the same page and streamline code research. Its up to the ingenuity of the person performing the annual flow test to determine the means available to actually measure the flow. How to Identify Broken Backflow Devices in Restaurant Water Systems. Section 184.108.40.206 states, Where connections do not permit verification of the [forward-flow] test at the minimum flow rate of system demand, tests shall be conducted at the maximum flow rate possible.. Weve been providing top-notch fire protection and backflow prevention services in the Southeast for decades. Without properly operating backflow preventers, your water can be exposed to dangerous chemicals, harmful natural gas, and even potentially fatal substances. However, in the 1970s, many water supply purveyors and the plumbing codes began requiring backflow prevention devices on those water supply lines.
See a Whether it comes in the form of backpressure backflow or backflow siphonage, the unfortunate occurrence of non-potable water streaming back into the usable water supply is a serious potential health crisis situation. Maintenance for a backflow preventer is to be performed by a qualified person, follow the manufacturers instructions and comply with the authority having jurisdictions and local jurisdictions policies. You may be trying to access this site from a secured browser on the server. Please enable scripts and reload this page. Commercial Fire Alarm Inspection & Testing Requirements Guide. The 1992 edition of NFPA 25, which is the first edition of that standard, required that check valves be internally inspected once every five years. Currently, inspection services will continue as scheduled.
In the 2014 edition, a requirement was added for an internal inspection of backflow preventers once every five years, except if it was performed during annual maintenance for the device. endstream endobj startxref For " to 1" Piping Material: Type K or Type L Copper Tubing, 1" min. However, water doesnt flow through a fire protection system unless theres a fire event or unless flow testing is being performed. Checking the rubber, plastic, and metal components for signs of wear, disrepair, or aging. Commercial backflow preventer issues can be subtle yet dangerous, so be sure to make backflow testing part of your overall life-safety plan. Weve been handling inspection and testing for decades, and we can guarantee your safety and satisfaction with our services!
A meter will be required to pass inspection. Sometimes the signs of a broken backflow prevention device are not as obvious as a backflow preventer leaking, but can still cause prolonged bouts of chronic illness, which is why regular backflow inspections and testing by a certified backflow testerare critical to the health of your customers, staff, and restaurant. Inspection requests for both installations should be coordinated to minimize delays. An open ditch is needed for the inspection. To prevent this undesirable circumstance, abackflow prevention device is required, in addition to regular checkups. Once the work has passed inspection, the meter will be activated by the Charlotte Water backflow inspector. 704.391.5188 to verify the status of a Backflow Hold or to schedule a backflow inspection. If below ground, device must be installed in vault with a concrete or stone bottom and provide for drainage to free atmosphere. Dirty water and soap from sinks and dishwashers, other solid waste from drains and disposals, human waste, and chemical cleaning agents can back up into the communitys water supply and potentially make people ill. 2. Today, the forward-flow test should be easy to comply with, especially for newer sprinkler systems installed following the 1999 and later editions of NFPA 13. At Unifour, our specialists are fully licensed and capable of providing the testing and inspection services you need to stay safe! Subscribe to our newsletters & stay updated, Acceptance Testing of Fire and Life Safety Systems, AGF Manufacturing to Sponsor, Present PHCPPros Webinar: "Corrosion and Freeze Protection in Fire Sprinkler Systems", ASSE International Publishes Revised Performance Requirements for Chemical Dispensing Systems with Integral Backflow Protection, SFPE Forum on Fire Protection Engineering: Challenges in Storage, Watts "Hydraulics of Backflow Detector Assemblies Type 1 & 2" Webinar, Inspecting, Testing Backflow Preventers Used in Fire Protection Systems, Indoor Ice Rinks: Design Considerations for High-Performance Ice, Do Compact Plumbing Systems Actually Work? email our backflow team. 40 PVC pipe, Sch. Galv. If your commercial backflow preventer stops working and there is a pressure change, backflow of water could lead to serious problems. The quarterly main drain test will lift the check valves but dont prove they will open fully should the system demand rate flow through the backflow preventer in a fire event.
Unifour Fire & Safety has been bringing superior service and quality to our consumers for over 30 years. All backflow prevention devices must be tested once a year. Contamination of Public Drinking Water. Second, a forward-flow test through the assembly had to be conducted annually at the water-based fire protection system's design flow rate, including hose streams.