ExRobotics ExR-2 - Risk Assessment & Reduction

ExRobotics B.V.
ExR-2 Robot
Operating Guide
Document No.:
20220412IP1
Version No.: 3
Owner:
Ian Peerless
Date:
2023-07-25
Page 64 of 69
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Copyright 2023 ExRobotics B.V.
12. Risk Assessment & Reduction
This section is copied from ExRobotics’ document [20230430IP1]. It’s intended to help customers to
identify, quantify, and control the risks associated with operating robots. The RAM scores are left
blank so that Customers can use their own evaluation criteria.
Description
Protective measures
RAM
conse-
quence
RAM
Likeli-
hood
RAM
Score
Inherently safe
design
Safeguarding &
complementary
protection
Information for
use
Robot could
drive into a
person and
injure them
or could drive
into an item
of plant.
Robot’s
maximum speed
is 2 km/hour
(walking pace).
There are no
sharp
protrusions on
the front or
back of the
robot.
Robot software
includes collision
avoidance and
detection but this
is not infallible so
cannot be relied
upon for safety.
If customer
complies with
barrier
recommendations
there’s a high
probability that
they’ll be
detected and
avoided.
Collision
avoidance is
highly likely to
detect a standing
person on its
route.
Robot includes an
emergency stop
that can be
reached from any
position around
the robot.
Customer to
assess robot
routes for
collision hazards
& take
precautions if
necessary.
Any barriers
should be at
least 10cm
wide, located
around 40cm
from the
ground, and
strong enough
to stop the
robot.
Customers
should train
plant operators
to avoid robots
in motion,
ensure there’s
an escape route
from congested
areas, and to
activate the
emergency stop.
Customers
should brief all
site personnel
of robot routes
especially those
Robot could
drive into an
object that
breaks an
inspection
module’s
plastic dome.
If Dome PTZ is
installed, a
“fender” will
also be installed
to protect it
when the robot
is driving
forwards.
Robot could
drive into an
object that
breaks one of
its glass
windows.
Camera and
LiDAR windows
are small, have
passed impact
tests & are
away from the
edges of the
robot.
Moving robot
could crush a
person
against a
solid object.
Robot moves
slowly & is easy
to avoid unless
person is in a
congested area.