11.1.2-6 High-Temperature Surface Exposure

Surfaces and edges of workstation components that the user is expected to touch with bare skin should not exceed the exposure times and temperatures for the surface materials listed in Table 11.2. 100

 

Table 11.2 Maximum Surface Temperature In Degrees Fahrenheit (Celsius) As A Function Of Material And Contact Time

 

 

Material

Contact Time

1 sec

4 sec

10 sec

10 min

8 hours1

Unpainted metal

149 (65)

136 (58)

131 (55)

118 (48)

109 (43)

Lacquered metal

167 (75)

142 (61)

131 (55)

118 (48)

109 (43)

Enameled metal

158 (70)

140 (60)

133 (56)

118 (48)

109 (43)

Ceramic, glass, stone

176 (80)

158 (70)

151 (66)

118 (48)

109 (43)

Plastics

185 (85)

165 (74)

158 (70)

118 (48)

109 (43)

Wood

230(110)

199 (93)

192 (89)

118 (48)

109 (43)

1   Amount of contact area (more than 10 percent of skin surface area) or contact with vulnerable structures (such as airways) invalidate the 8-hour values given here.

Note: Source is Table 5-1 in ANSI/HFES 100 (ANSI/HFES, 2007)