The key to long life and continual reliable service out of your fire protection tank is through routine inspections. Inspections are not only required by NFPA, AWWA, and many insurance providers, but a proper inspection regimen will also extend the life of your water storage tank . Also, inspections give you the piece of mind knowing that it's structurally sound and in a constant state of functional readiness. Please keep in mind, unless the surface below the water level inside the tank is evaluated, a formal inspection upon National Fire Protection Association standards has not been performed. One should also be mindful of who is "inspecting" your tank. We commonly hear "My sprinkler contractor inspects the tank", or, "Our cathodic protection vendor inspects our tank." While it is true some sprinkler contractors and cathodic protection providers may offer an NFPA inspection of fire tanks, it is rare. And in the event this service is offered, it is simply sub-contracted to a storage tank maintenance company.
Water storage tank inspections should be conducted more frequently where extreme conditions, such as freezing temperatures or dry climates exist. These types of environments can increase the probability of unfavorable affect on water storage tanks. There are several key areas to focus your inspection on to maintain reliable water supply in the event of an emergency.
Our team of experts work hard to find the most time-efficient and cost-effective solution for your tank. After the inspection is completed, you will receive a detailed report with photo documentation, recommendations, and cost estimates. The report will address not only the coatings and structural condition , but all applicable standards, includ ing AWWA , NFPA 22 and 25, OSHA , EPA, and authorities having local jurisdiction . Additional tests available upon request include Ultra Sonic Thickness (UT) Testing, Adhesion Testing and Mil Thickness Testing. Inspections can be performed either while the tank is holding water through robotic application (ROV) or out of service, depending on your specific needs.
Foundation: Water storage tanks are large and very heavy. A well maintained foundation is a necessity to keep your tank from sagging, sinking or becoming unstable. Visual inspection of the foundation materials will ensure the tank is secure and safe.
Tank Structure: Exterior visual inspections, including UT readings and mil testing to determine the dry film thickness and present coatings . Interior inspections through robotic equipment will be the most accurate way to evaluate your current tank conditions.
Heating Systems: The heating systems are designed to maintain a minimum water temperature of 42° per NFPA 22.214.171.124. The heating system will prevent ice buildup that can block water flow in fill pipes and suction lines preventing water from flowing in and out of the tank in the case of an emergency.
Tank Floor: Over time tank floors can be littered with contaminants such as sand, dirt, animals, rust and other outside obstructions. The floor must remain clean and free of contaminants to prevent obstructions to suction lines in the even t of an emergency.
When draining your tank isn't possible, an ROV inspection is the best choice. This type of inspection allows your tank to be fully operational and saves you the expense of draining and refilling. The ROV can move throughout your tank interior, inspecting sidewalls, roofs, floor conditions, adhesion, and paint failures ... all with absolutely no impairment to your suppression system. PMD will also provide the owner with a standard inspection report as described above.