High Voltage Lines Checklist
Labor Occupational Health Program
-
High Voltage Lines - LOHP
The Labor Occupational Health Program (LOHP) at UC Berkeley developed toolbox talks and forms for 28 subject areas. You can access the introduction and reference sections in the "More like this" area and the other subjects by searching on 'LOHP'.
Summary Statement
A checklist of items to note when working near high voltage lines, such as distance required from the line, PPE and First Aid. Part of a collection. Click on the 'collection' button to access the other items.
1994
| These tailgate/toolbox talks were developed for use under California OSHA regulations. The complete set is available from the Labor Occupational Health Program at UC Berkeley. For ordering information, visit the website (www.lohp.org) The American Conference of Government Industrial Hygienists (ACGIH) has adapted these talks to apply to federal OSHA regulations. To contact ACGIH, visit its web site (www.acgih.org). |
| Date Prepared:_________________________ | By:_______________________ |
| Project Name/No.______________________ | Location:__________________ |
- Check the box if the statement is true.
- Fill in
the blanks where the
appears.
- Citations in brackets are from Title 8 of the California Administrative Code.
HAZARD IDENTIFICATION
- The company has a written Injury and Illness Prevention Program (IIPP) that meets all Cal/OSHA requirements. It includes identification of high voltage electrical hazards on the site, regular inspections, accident investigation, and correction of hazardous conditions. [1509]
NOTIFICATION AND RESPONSIBILITY
- Before any work
begins within the minimum clearance distance of an overhead high
voltage electrical line, the owner/operator of the line is notified.
(See page 2 for clearance distances.) [2948]
- Any overhead line
is considered energized unless the owner verifies it is not energized
and the line is visibly grounded. [2946(d)]
- Work near energized overhead lines is done only by qualified persons unless steps are taken to guard against accidental contact. [2320.1(b)]
- There are signs
in plain view on all cranes, derricks, power shovels, pile drivers,
and similar machinery, reading as shown below: [2947]
- Unlawful to
Operate This Equipment Within 10 Feet of High Voltage Lines of 50,000
Volts or Less. [2947]
- For Minimum Clearances of High Voltage Lines in Excess of 50,000 Volts, See California Code of Regulations, Title 8, Article 37, High Voltage Electrical Safety Orders.
- Unlawful to
Operate This Equipment Within 10 Feet of High Voltage Lines of 50,000
Volts or Less. [2947]
MINIMUM CLEARANCE
- Unless an overhead
high voltage electrical line is de-energized and visibly grounded, nothing
comes within the minimum clearance distance at any time: [2946(b)(2)
and (3)]
Clearances
from Energized High Voltage Lines
|
Normal
Voltage (Phase to Phase
|
Minimum
Clearance for People and Most Equipment (Feet)
|
Minimum
Clearance for Lifting and Hoisting Machinery (Feet)
|
|
600.......50,000
|
6
ft.
|
10
ft.
|
| over 50,000..........75,000 |
10
ft.
|
11
ft.
|
| over 75,000........125,000 |
10
ft.
|
13
ft.
|
| over 125,000......175,000 |
10
ft.
|
15
ft.
|
| over 175,000......250,000 |
10
ft.
|
17
ft.
|
| over 250,000......345,000 |
10
ft.
|
21
ft.
|
| over 345,000......370,000 |
16
ft.
|
21
ft.
|
| over 370,000......550,000 |
16
ft.
|
27
ft.
|
| over 550,000......750,000 |
16
ft.
|
42
ft.
|
| over 750,000...1,000,000 |
20
ft.
|
42
ft.
|
[2946, Table 1 and Table 2]
|
Use
the table on the previous page to determine required minimum clearances on this job site. If voltages are different on different parts of the site, list them separately for each area. |
|
Area
on Site |
Line
Voltage |
Clearance
for People and Most Equipment
|
Clearance for Lifting and Hoisting Machinery
|
- Tools, machinery,
equipment, supplies, materials, or apparatus are stored beyond the required
clearance distance from overhead high voltage electrical lines. [2946(b)(4)]
- Workers and/or
their equipment or materials are never over or above an energized
overhead high voltage electrical line. [2946(b)(1)] (For tower crane
exceptions see [2946(b)(1)(B).])
- Calculation of
clearance distances from overhead high voltage lines takes into account
possible line movement due to strains on the supporting structures or
attachments. [2946(c)]
- Workers exposed
to possible electric shock are provided and use suitable protective
equipment or devices, such as insulated rubber gloves. [1518]
- Workers exposed
to possible electric shock or burns are provided and use approved head
protection. For under 600 volts, head protection meets the requirements
for Class A or B in American National Standards Institute (ANSI)
standard Z 89.1 1986, Requirements for Protective Headwear for Industrial
Workers. For over 600 volts, head protection meets the requirements
for Class B. [3381(b) and (d)]
- First aid equipment is available. There are personnel trained in first aid on-site. The site also has an effective communications system for contacting help. [1512(b), (c), and (e)]
