Linde LLC, Bridgewater, N.J., has developed a protective-atmosphere safety monitoring system that can be installed on new or existing nitrogen supply systems for all common types of heat treatment furnaces, and can be tailored to the unique needs of the operation.
The system helps companies operating heat treatment furnaces to improve safety by installing a protective-atmosphere monitoring system in compliance with the National Fire Protection Association’s “Standard for Ovens and Furnaces” (NFPA 86).
Heat treating furnaces depend on a nitrogen supply to help operators initiate a safety purge with inert gas of the flammable atmosphere, and NFPA 86 requires proper monitoring and controls to reduce fire and explosion hazards.
The Linde safety solution is designed to monitor nitrogen supply levels, and it signals operators at low conditions with an audible alarm and strobe. To help ensure availability of supply for the flammable-atmosphere nitrogen purge, the integral alarm panel provides indicators for low liquid-nitrogen level, low nitrogen pressure, and low nitrogen-supply temperature.
The Linde furnace safety solution can be installed on new or existing nitrogen supply systems for all common types of heat treatment furnaces, and can be tailored to the unique needs of the operation. Safety monitoring systems are a standard part of Linde heat treatment technology upgrades.
With every installation, Linde application engineers conduct safety training that covers the properties of nitrogen, storage tank fundamentals, material compatibilities, and emergency procedures.
Linde offers decades of experience in heat treatment across all common furnace types from continuous to batch type furnaces, including roller hearth, pusher, pit or rotary-retort. Expertise spans all typical protective atmospheres – from pure nitrogen, pure hydrogen, nitrogen/hydrogen, nitrogen/hydrocarbon type atmospheres to endothermic gas, exothermic gas and monogas atmospheres.
