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51312-01754-Final Report: New Generation of a Corrosion Resistant Stainless Steel Fire Hydrant Refurbishment "N

Product Number: 51312-01754-SG
ISBN: 01754 2012 CP
Author: Edgar D. Smith
Publication Date: 2012
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$20.00
$20.00
Some of the military’s greatest assets are its Soldiers and their families. For their protection attention must be given to the condition of infrastructure that can’t be seen as well as that which is visible or the mission could be compromised. Both lives and property may be lost unless existing older-generation fire hydrants are upgraded with a new-generation system similar to the one presented here. This new system is corrosion-resistant and also helps to prevent deliberate/accidental injection of chemical/biological contaminants into the drinking water systems. This work presents an innovative but off-the-shelf product which has now been tested requires no expensive excavation and promises to be reliable economical and corrosion-resistant.Because fire hydrants are not used regularly their operation and maintenance can be overlooked especially in challenging budgetary times. Yet their importance is critical – a true matter of life and death. Typical cold-rolled steel components “are highly susceptible” to corrosion and have documented a “surprisingly high frequency of corrosion issues.”This finding was subsequently documented as part of the US Army and Department of Defense (DOD) Corrosion Program as the result of a demonstration and evaluation of the technology that is underway at a major U.S. Army installation. The installation selected 90 older-generation fire hydrants of various brands models and vintages. The hydrants many of which were discovered to be inoperable and difficult to open were then retrofitted with a new-generation hydrant system known as the Davidson Hydrant Security Device Anti-Terrorism Valve (ATV). As part of the ongoing mission to prevent corrosion ERDC-CERL researchers had taken notice of this hydrant’s corrosion-resistant components especially the series 304 stainless steel stem. The ATV has three other main parts: insert seat check valve and series 302 stainless steel spring. The demonstration’s main objective was to implement the retrofits and to evaluate relevant data collected during the onsite demonstration. Torque measurements were taken before and after the refurbishment and indicate that more than 20% of the retrofitted hydrants were difficult to open or completely inoperable with 100% showing improvement after the retrofit.The collected data will inform installation decision making and also result in possible transfer of the technology through industry standards. In addition to the fieldwork performed at the U. S. Army installation CERL performed laboratory analyses of the retrofit kit. The series 304 stainless steel stem and other system components were placed in an operating salt spray (fog) apparatus according to the ASTM International standard B117- approved for use by DOD agencies. Data from this demonstration of a new generation of fire hydrant technology and materials proves two benefits —prevention of corrosion in fire hydrants and prevention of contaminants being introduced to potable water systems. In turn those expected benefits should save money on O&M and replacement improve firefighting response time and life safety for Soldiers and their families plus transfer technology DOD-wide and to the public sector. This presentation is an update of an earlier presentation. This presentation will contain the latest information (not previously reported) from the final project report.
Some of the military’s greatest assets are its Soldiers and their families. For their protection attention must be given to the condition of infrastructure that can’t be seen as well as that which is visible or the mission could be compromised. Both lives and property may be lost unless existing older-generation fire hydrants are upgraded with a new-generation system similar to the one presented here. This new system is corrosion-resistant and also helps to prevent deliberate/accidental injection of chemical/biological contaminants into the drinking water systems. This work presents an innovative but off-the-shelf product which has now been tested requires no expensive excavation and promises to be reliable economical and corrosion-resistant.Because fire hydrants are not used regularly their operation and maintenance can be overlooked especially in challenging budgetary times. Yet their importance is critical – a true matter of life and death. Typical cold-rolled steel components “are highly susceptible” to corrosion and have documented a “surprisingly high frequency of corrosion issues.”This finding was subsequently documented as part of the US Army and Department of Defense (DOD) Corrosion Program as the result of a demonstration and evaluation of the technology that is underway at a major U.S. Army installation. The installation selected 90 older-generation fire hydrants of various brands models and vintages. The hydrants many of which were discovered to be inoperable and difficult to open were then retrofitted with a new-generation hydrant system known as the Davidson Hydrant Security Device Anti-Terrorism Valve (ATV). As part of the ongoing mission to prevent corrosion ERDC-CERL researchers had taken notice of this hydrant’s corrosion-resistant components especially the series 304 stainless steel stem. The ATV has three other main parts: insert seat check valve and series 302 stainless steel spring. The demonstration’s main objective was to implement the retrofits and to evaluate relevant data collected during the onsite demonstration. Torque measurements were taken before and after the refurbishment and indicate that more than 20% of the retrofitted hydrants were difficult to open or completely inoperable with 100% showing improvement after the retrofit.The collected data will inform installation decision making and also result in possible transfer of the technology through industry standards. In addition to the fieldwork performed at the U. S. Army installation CERL performed laboratory analyses of the retrofit kit. The series 304 stainless steel stem and other system components were placed in an operating salt spray (fog) apparatus according to the ASTM International standard B117- approved for use by DOD agencies. Data from this demonstration of a new generation of fire hydrant technology and materials proves two benefits —prevention of corrosion in fire hydrants and prevention of contaminants being introduced to potable water systems. In turn those expected benefits should save money on O&M and replacement improve firefighting response time and life safety for Soldiers and their families plus transfer technology DOD-wide and to the public sector. This presentation is an update of an earlier presentation. This presentation will contain the latest information (not previously reported) from the final project report.
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