Chapter 3. safety, Electrocution hazards 3-1, Minimum safe approach distance 3-1 – Snorkel TB37 2001 User Manual

Page 11: Electrocution hazards, 3-1, Minimum safe approach distance, 3-1, Safety devices, 3-1, 4-1, Ansi/sia a92.5, 3-1, Electrocution hazards -1, Minimum safe approach distance -1, Danger

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Chapter 3. Safety

Knowledge of the information in this manual, and proper
training, provide a basis for safely operating the aerial
platform. Know the location of all controls and how they
operate to act quickly and responsibly in an emergency.

Safety devices reduce the likelihood of an accident.
Never disable, modify, or ignore any safety device.
Safety alerts in this manual indicate situations where
accidents may occur.

If any malfunction, hazard or potentially unsafe condi-
tion relating to capacity, intended use, or safe operation
is suspected, stop aerial platform operation and seek
assistance.

The operator bears ultimate responsibility for following
all manufacturer’s instructions and warnings, regula-
tions and safety rules of their employer and/or any state
or federal law.

Electrocution Hazards

The aerial platform is made of metal components and is
not insulated. Regard all conductors as energized. Do
not operate outside during a thunderstorm.

Minimum Safe Approach Distance

Minimum safe approach distances to energized power
lines and their associated parts must be observed while
operating the aerial platform.

The aerial platform is not electrically insulated.
Death or serious injury can result from contact with,
or inadequate clearance from, an energized con-
ductor. Do not go closer than the minimum safe ap-
proach distance as defined by ANSI.

ANSI publications define minimum distances that must
be observed when working near bus bars and ener-
gized power lines. Table 1 and Figure 3 are reprinted
courtesy of Scaffold Industry Association, ANSI/SIA
A92.5, page 23.

Voltage range

(phase to phase)

Minimum safe approach distance

(Feet)

(Meters)

0 to 300V

Avoid contact

Over 300V to 50kV

10

3.05

Over 50kV to 200kV

15

4.60

Over 200kV to 350kV

20

6.10

Over 350kV to 500kV

25

7.62

Over 500kV to 750kV

35

10.67

Over 750kV to 1000kV

45

13.72

TB37 – 0172094

page 3 - 1

Denotes
prohibited
zone

Table 1—Minimum Safe Approach Distance

Figure 3—Minimum Safe Approach Distance

DANGER

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