Facilities
Lockout and Tagout Procedure
Procedure Number 7-12P
Reference: University Policy: 7-12
Reference: OSHA Lockout/Tagout
Requirements
Issue Date: April 27, 2001
The purpose of
this procedure is to prevent injuries to employees from the unexpected
energizing, start-up, or release of stored energy from machines,
equipment, or processes when such employees are engaged in activities
where they are at risk.
Only Authorized personnel having an intimate knowledge of the work
to be performed shall perform this lockout and tagout
procedure.
An Authorized person is considered a
qualified person to whom the authority and responsibility to perform a
specific lockout and/or tagout assignment has been given by the
University. An example of an
Authorized person may be a senior mechanic or senior electrician. This person would be considered
qualified if they can demonstrate by experience or training the
ability to recognize potentially hazardous energy and its potential impact
on workplace conditions, and has the knowledge to implement adequate
methods and means for the control and isolation of such
energy.
All lockouts and tagouts shall be
recorded in a log book maintained in the shop supervisor’s area. The log book shall be used to identify
lockouts in sequential order, name and location of equipment and/or system
affected, authorized persons involved, dates, times, and supplies. Approved locks, hasps, and tags shall
be used as shown in the figure to follow.
1.
The first step of any
lockout is to have a Qualified person determine what needs to
be locked out. The latest
drawings, sketches, and/or notes should be analyzed to identify all energy
sources to the equipment. Drawings
typically reviewed are electrical single-lines and mechanical piping and
instrument diagrams (P&IDs).
Particular attention should be given to temporary feeds, back-feeds
and alternate feeds including all sources of control voltage.
2.
After identifying all
the energy sources and isolation points, the equipment shall be shutdown
and the disconnecting means (breakers, switches, valves, etc) shall be
opened or positioned in the “OFF” position for all of the energy sources
using the Personal Protective Equipment (PPE) designated to accomplish
this safely.
3.
Verification
that all potential energy sources are eliminated must be made before
applying the Lock and Tag. These
energy sources may be electrical, mechanical, or both. Mechanics must follow procedures unique
to each equipment or system that are designed to eliminate both of these
energy sources.
(a) Electrical - A visual inspection by a
Qualified electrician must be made to verify the circuit is open. Where possible, disconnect switches
shall be inspected to assure that all blades are in the full open
position. Where visual
verification is not possible, other means of providing a visible break may
be necessary, for example a Qualified electrician will test for the
absence of voltage and remove the fuses or lift the wires. An example may be a foreign disconnect
switch provided by a vendor and no prints or manuals are available.
(b) Mechanical - Release any residual energy by
opening drains, vents, and bleeds associated with double-block valving
arrangements inside the lockout boundary.
Release any chemical energy by draining any remaining material in
pipes and equipment into controlled containers while proper personnel
protective equipment (PPE) is utilized.
Latch in place any travel stops necessary to prevent the release of
any potential or stored energy.
Engaging travel stops may be required to protect against any sudden
movement of an elevator.
4.
Try the electrical
circuit and/or mechanical system to verify that it is isolated,
de-energized, and free from stored energies.
Once the verification is made, then the Authorized person shall
install his/her Lock and Tag:
·
The Tag must have the
person’s name, shop, radio # (if the person is assigned radio) and
reason for the tag. The time
and date must be on the Tag as well.
·
If more than one trade
is working on the equipment and/or system, each trade must install an
individual lock. It is permissible
that one Authorized person responsible for the work and/or work crew of a
given trade, install his/her lock representative of that trade.
·
If
a change of shift should occur while the equipment and/or system is
locked and tagged and work must continue, the next shift Authorized
individual shall put their lock on and former shift shall remove
theirs. In the case where work is
continued the next day or at some future time, then the equipment and/or
system shall remain locked and tagged for the
duration.
·
NO
ONE shall remove another
person’s lock. There are no
exceptions.
Locks and Hasps
Tags
