Question

31 - What color flags are used to mark the location of steam lines?

1 - Orange
2 - White
3 - Yellow
4 - Red

Answer 1

Yellow flags are used to mark the location of steam lines, adhering to APWA guidelines that designate yellow for marking gaseous materials.

Step-by-step explanation:

The color flags used to mark the location of steam lines are typically yellow. Marking standards for utilities are often directed by the American Public Works Association (APWA) guidelines which suggest the color yellow is used to indicate the presence of gaseous materials, including steam, under the Uniform Color Code for Marking Underground Facilities. Therefore, when identifying buried steam lines for caution during construction or repairs, yellow flags or paint would be used to highlight the location of these potentially dangerous lines.