Psu Loto Training

8/11/2019 Psu Loto Training

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PSU Lockout/Tagout Training forAuthorized Employees

(Note: This training is intended to be presented by

EHS)

www.ehs.psu.edu
http://www.ehs.psu.edu/http://www.ehs.psu.edu/


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Objectives

Clarify requirements of PSU Lockout/Tagout

(LOTO) Program

Ensure everyone is aware of their role within

LOTO Program

Provide an opportunity to discuss concerns

related to LOTO Program


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Training Outline

I. How Do Injuries Occur During Servicing?

II. What is LOTO?

Types of hazardous energy

When should LOTO be applied? Energy isolation devices

III. LOTO Basics

IV. General LOTO procedure at PSU

V. Special Situations

VI. Energy Isolation DeviceVideo Review

VII. Safe or Unsafe? Exercise


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I. How Injuries Occur During the Servicing

of Equipment?

BLS study on injurieswhile servicing

equipment revealed:

80% failed to turn off

equipment

10% equipment

activated by someone

else

5% failed to control

potential energy

Most of remaining 5%

disconnected power but

failed to verify

effectiveness


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II. What is LOTO?

LOTO is a technique used to prevent energy

from being released during the servicingof

equipment. This is accomplished by placing

locks on energy isolation devices prior to

starting work.


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Types of Hazardous Energy

What types of hazardous energyare subject to

LOTO?


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Types of Hazardous Energy

Electrical

Pneumatic

Hydraulic

Mechanical

Thermal

Chemical

Radiation

Steam

Spring-Driven

Suspended Parts

Some energy sources can be turned on/off.Others can only be dissipated or controlled.


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Potential Energy vs. Kinetic Energy

Potential energy can be converted to kinetic!

Goal of LOTO is to achieve Zero Energy State


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When is LOTO applied?

Adjusting

Inspecting

Modifying

Replacing parts

Tool changes

Clearing jams

Lubricating

Cleaning

during the servicingof equipment.

There are some situations where LOTO is not required


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Exceptions to LOTO

Cord & plug connected equipment Plug is only source of energy

Plug is under continuous control of one person


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Exceptions to LOTO

Minor tool changes and adjustments, and other minor

servicing activities, which take place during normal

production operations, if they are routine, repetitive and

integral to the use of the equipment for production,

provided that the work is performed without the removal

or bypassing of machine guards.

Alternative measures for protection are used. Body part not placed in the point of operation or other

dangerous area during machine cycle.


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Energy Isolation Devices

Examples:

Electrical disconnect switch

Electrical breaker switch

Hydraulic valve

Pneumatic valve

Line valve

Pushbuttons, selectorswitches, and other control

circuit devices are NOT energyisolation devices.

accomplished by placing locks on energy isolation devices

Device that physically prevents the

transmission or release of energy


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Review of LOTO Definition

LOTO is a technique used to prevent energy

from being released during the servicingof

equipment. This is accomplished by placing

locks on energy isolation devices prior tostarting work.


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III. LOTO Basics

All employees fit into one of the following

LOTO roles:

Authorized employee Services equipment & authorized to apply LOTO.

Affected employee Operates or uses equipment being serviced under

LOTO.

Other employee Works in an area where LOTO being used.


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LOTO Basics

Preferred means of controllinghazardous energy at PSU isLOCKOUT IN CONJUNCTIONWITH TAGOUT.

Each isolation point must haveboth a lock and a tag attachedto it.

Locks must be standardized &used only for LOTO.

Tags must indicate lock holder& date of application.


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IV. General PSU LOTO Procedure

STEP 1

ID Energy

Sources

STEP 2

Notify

Others

STEP 4

Isolate

Equipment

STEP 5

LOTO

Equipment

STEP 3

Shutdown

Equipment

STEP 6

Release Stored

Energy

STEP 7

Verify

Isolation

STEP 8

Perform

Servicing

STEP 9

Release

from LOTO


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Step 1: ID All Energy Sources

Know types & magnitude of energy associated

with equipment.

ID all energy sources feeding the equipment

(including potential energy).

Gather appropriate control devices.

Clarify any questionable identification of

energy sources before proceeding.


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Step 2: Notify Others

Verbally notify all affected and other

employees of impending shutdown.

Not all equipment will have someone

assigned to it.


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Step 3: Shut Down Equipment

Use normal stopping

procedures to shut

down equipment.

Push Stop button Off/On toggle switch

etc.
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Step 4: Isolate Equipment

After shutdown,operate all energyisolation devices soequipment is

disconnected fromenergy sources. Turn electrical

disconnect to OFFposition

Open circuit breaker Close valve

Etc.


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Step 5: LOTO the Equipment

Attach locks & devices to

each isolation point.

Tag must accompany each

lock.

Good idea to also tag point

of operation if located

remotely from isolation

points.

What if equipment wont

accept a lock?


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Step 6: Release Stored Energy

Ensure all potential orresidual energy iscontrolled.

Block elevated parts.

Block/release springs.

Relieve system pressure.

Drain fluids.

Vent gases.

Allow system to cool.Discharge capacitors.

Stop rotating flywheels.


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Step 7: Verify Isolation

Before any servicing begins, verify

effectiveness of LOTO.

Use normal starting procedure or otherwise

verify Zero Energy State.

Return controls to OFF position after testing.

Verification is the step which is most

frequently skipped during evaluations.


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Step 8: Perform Servicing

Complete required service work.

Avoid doing anything that could potentially

reactivate the equipment.

OK to interrupt LOTO, but must be reapplied if

servicing is to continue.


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Step 9: LOTO Release

All locks, tags, & devices removed by same

person who applied.

Remove all tools from equipment area.

Replace all machine guards.

Verbally inform all affected & other

employees that LOTO is complete.

Ensure area is clear prior to restart.


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IV. General PSU LOTO Procedure

STEP 1

ID Energy

Sources

STEP 2

Notify

Others

STEP 4

Isolate

Equipment

STEP 5

LOTO

Equipment

STEP 3

Shutdown

Equipment

STEP 6

Release Stored

Energy

STEP 7

Verify

Isolation

STEP 8

Perform

Servicing

STEP 9

Release

from LOTO


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V. Special Situations Shift changes

Oncoming employee attaches locks/tags prior to outgoing employeeremoving theirs.

EHS must OK alternative procedures.

Vehicle hazardous energy control Alternative vehicle control methods are permitted in circumstances

where removal of the key fully ensures employee protection.

The authorized employee performing the maintenance would need to

retain sole control of the key. If removal of the key does not fully ensure employee protection

additional measures are needed. (removal of battery cable, chockwheels, etc)


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Lock removalprocedure

Supervisor mustbe notified if lockowner is notpresent.

Use Appendix C ofprogram todocumentremoval.


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V. Special Situations

Group LOTO Each employee applies own

locks/tags to each isolation point.

OR

A designated person locks out eachof the energy sources and puts thekeys into a group lockbox. Theauthorized employees place theirlock on the group lockbox before

they begin work. After each workerfinishes, the worker removes hislock from the box.

EHS must OK alternative procedures.


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Summary

All hazardous energy sources must be controlled(kinetic & potential).

Control via energy isolation device (do not rely oncontrol circuit).

Only use designated lock for LOTO.

Tags must accompany all locks.

Nine-step general procedureremember to verify

isolation. Protection must be ensured during special situations.


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Any Questions?

Psu Loto Training

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