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51312-01339-Determination of Skin Burn Temperature Limits for Insulative Coatings Used for Personnel Protection

Product Number: 51312-01339-SG
ISBN: 01339 2012 CP
Author: Howard Mitschke
Publication Date: 2012
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Workers often perform tasks on high temperature equipment and piping. As they move about this equipment they may have unintentional contact with the hot surfaces resulting in burns to the skin. Thermal insulation is generally installed on metallic equipment at 60°C (140°F) or higher for personnel protection (PP). Insulative coatings are an alternative to the use of traditional insulation for PP where strict heat retention is not required. Although the external surface of the insulative coating may heat up to temperatures greater than 60°C it can have a threshold burn temperature that is higher than for the metal substrate because of the coating's lower thermal conductivity. This is a well known fact but the perception of many plant personnel is that the coating surface must also be less than 60°C. This report presents work that validates the use of an insulative coating for PP using accepted instrumentation in accordance with ASTM C1055 C1057 and ISO 13732-1. Test variables included coating thickness metal substrate temperature ambient air temperature surface roughness and hot vs ambient coating application. In addition to determination of the burn thresholds the results confirm that higher surface temperatures than 60°C are allowed for insulative coatings.
Workers often perform tasks on high temperature equipment and piping. As they move about this equipment they may have unintentional contact with the hot surfaces resulting in burns to the skin. Thermal insulation is generally installed on metallic equipment at 60°C (140°F) or higher for personnel protection (PP). Insulative coatings are an alternative to the use of traditional insulation for PP where strict heat retention is not required. Although the external surface of the insulative coating may heat up to temperatures greater than 60°C it can have a threshold burn temperature that is higher than for the metal substrate because of the coating's lower thermal conductivity. This is a well known fact but the perception of many plant personnel is that the coating surface must also be less than 60°C. This report presents work that validates the use of an insulative coating for PP using accepted instrumentation in accordance with ASTM C1055 C1057 and ISO 13732-1. Test variables included coating thickness metal substrate temperature ambient air temperature surface roughness and hot vs ambient coating application. In addition to determination of the burn thresholds the results confirm that higher surface temperatures than 60°C are allowed for insulative coatings.
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51313-02621-TSA Coatings for the Mitigation of Corrosion and EAC of Welded Duplex SS at Elevated Temperature

Product Number: 51313-02621-SG
ISBN: 02621 2013 CP
Author: Dave Harvey
Publication Date: 2013
$20.00