Safety Standards
for Window Cleaning
Chapter 296-878, WAC |
Effective
Date: 01/01/03 |
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WAC 296-878-17005
Maintain clearance between window
cleaners and power lines.
You must
- Maintain clearances between window cleaners
and power lines as indicated in Tables 2 and 3.
Table 2
Minimum Clearances from Power Lines - Insulated Lines
Voltage |
Minimum distance |
Alternatives |
Less than 300 volts |
3 feet (0.9 m) |
-- |
300 volts to 50 kv |
10 feet (3.1 m) |
-- |
More than 50 kv |
10 feet (3.1 m) plus 0.4 inches (1.0 cm) for each
1 kv over 50 kv |
2 times the length of the line insulator, but never
less than 10 feet (3.1 m) |
|
Table 3
Minimum Clearances from Power Lines - Uninsulated Lines
Voltage |
Minimum distance |
Alternatives |
Less than 50 kv |
10 feet (3.1 m) |
-- |
More than 50 kv |
10 feet (3.1 m) plus 0.4 inches (1.0 cm) for each
1 kv over 50 kv |
2 times the length of the line insulator, but never
less than 10 feet (3.1 m) |
|
You must
- Follow these procedures when window cleaners
need to get closer to power lines than allowed in Tables 2 and
3:
- - Notify the utility company or electrical
system operator of the need to work closer than the minimum
clearances to power lines before starting the work
- - Begin the work only when the utility
company or electrical system operator has deenergized or
relocated the lines, or installed protective coverings to
prevent accidental contact with the lines.
|
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