SN55, SN55S, SN55V, SN75, SN75S, SN75V User Manual
1: Safety
02250247-571 R04
Subject to EAR, ECCN EAR99 and related export control restrictions.
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1.11 Implementation of lockout/tagout
The energy control procedure defines actions necessary
to lockout a power source of any machine to be repaired,
serviced or set-up, where unexpected motion, or an
electrical or other energy source, would cause personal
injury or equipment damage. The power source on any
machine shall be locked out by each employee doing the
work except when motion is necessary during setup,
adjustment or trouble-shooting.
A.
The established procedures for the application of
energy control shall cover the following elements and
actions and shall be initiated only by Authorized Per-
sons and done in the following sequence:
1. Review the equipment or machine to be locked
and tagged out.
2. Alert operator and supervisor of which machine
is to be worked on, and that power and utilities
will be turned off.
3. Check to make certain no one is operating the
machine before turning off the power.
4. Turn off the equipment using normal shutdown
procedure.
5. Disconnect the energy sources:
a.
Air and hydraulic lines should be bled,
drained and cleaned out. There should be
no pressure in these lines or in the reser-
voir tanks. Lockout or tag lines or valves.
b.
Any mechanism under tension or pressure,
such as springs, should be released and
locked out or tagged.
c.
Block any load or machine part prior to
working under it.
d.
Electrical circuits should be checked with
calibrated electrical testing equipment and
stored energy and electrical capacitors
should be safely discharged.
6. Lockout and/or Tagout each energy source using
the proper energy isolating devices and tags.
Place lockout hasp and padlock or tag at the
point of power disconnect where lockout is
required by each person performing work. Each
person shall be provided with their own padlock
and have possession of the only key. If more
than one person is working on a machine
each
person
shall
affix personal lock and tag using a
multi-lock device.
7. Tagout devices shall be used only when power
sources are not capable of being locked out by
use of padlocks and lockout hasp devices. The
name of the person affixing tag to power source
must be on tag along with date tag was placed
on power source.
8. Release stored energy and bring the equipment
to a “zero mechanical state”.
9. Verify Isolation: Before work is started, test
equipment to ensure power is disconnected.
B.
General Security
1. The lock shall be removed by the “Authorized”
person who put the lock on the energy-isolating
device. No one other than the person/persons
placing padlocks and lockout hasps on power
shall remove padlock and lockout hasps and
restore power. However, when the authorized
person who applied the lock is unavailable to
remove it his/her Supervisor may remove pad-
lock/padlocks and lockout hasps and restore
power only if it is first:
a.
verified that no person will be exposed to
danger.
b.
verified that the “Authorized” person who
applied the device is not in the facility.
c.
noted that all reasonable efforts to contact
the “Authorized” person have been made
to inform him or her that the lockout or
tagout device has been removed.
d.
ensured that the “Authorized” person is
notified of lock removal before returning to
work.
2. Tagout System—Tags are warning devices
affixed at points of power disconnect and are not
to be removed by anyone other that the person
placing tag on power lockout. Tags shall never be
by-passed, ignored, or otherwise defeated.
