1.0 Purpose

Energy Isolation procedures are followed in order to ensure the safety of employees at the workplace. These procedures mainly aim to prevent the mishaps taking place on account of accidental activation of equipment during installation or checking or maintenance.

2.0 Scope

Scope of this Procedure is limited to Personnel concerned with the operation & maintenance at HAESUNG CONSTRUCTION, INC. Facilities.

3.0 Responsibility

Functional Head – Plant and Facility is responsible for maintenance and implementation of this procedure and HSE representative is responsible for compliance of this procedure.

4.0 Description

4.1.1 Lock Out & Tag Out (LOTO) or lock and tag is a safety procedure which is used in industry to ensure that dangerous machines are properly shut off and not started up again prior to the completion of maintenance or servicing work. It requires that hazardous power sources be "isolated and rendered inoperative" before any repair procedure is started. "Lock and Tag" works in conjunction with a lock usually locking the device or the power source with the lock, and placing tag affixed to the locked device indicating that it should not be turned on.

This comes down to

Remove from operation an equipment, a machine, an installation (or a part of it)

Disconnect the equipment, the machine, the installation from its energy sources (Electrical, pressure, heat, etc.)

Immobilize (Lock out) the disconnected parts and hang appropriate Tag [Different Tag for Electrical and other source of Energy.

Discharge all residual energy from the equipment, the machine or the installation. This is done by the grounding (release of all residual electrical charges), by blowing out pressurized lines, by releasing potential mechanical energy (height, springs etc.) as is applicable.

Check for the absence of residual energy.

4.1.2 Preparation for Lockout

Employees authorized to perform lockout shall be certain as to which switch, valve, or other energy isolating devices apply to the equipment being locked out. More than one energy source (electrical, mechanical, or others) may be involved. Before lockout commences, job authorization should be obtained

4.1.3 Sequence of Lock Out & Tag Out (LOTO) Procedure

The Area is to be inspected before initiation of work.

Required permission to keep the machine out of operation from Operating Department.

Examination of any Dangerous Operation (Height work, Confined Space etc.) that would be required for LOTO.

If the equipment is operating, shut it down by the normal stopping procedure (such as: depress stop button, open toggle switch).

Operate the switch, valve, or other energy isolating devices so that the energy source(s) (electrical, mechanical, hydraulic, and other) is disconnected or isolated from the equipment. Stored energy, such as that in capacitors, springs, elevated machine members, rotating fly wheels, hydraulic systems, and air, gas, steam or water pressure, must also be dissipated or restrained by methods such as grounding, repositioning, blocking, bleeding down.

Lockout energy isolating devices with an assigned individual lock.

After ensuring that no personnel are exposed and as a check on having disconnected the energy sources, operate the push button or other normal operating controls to make certain the equipment will not operate.

CAUTION: Return operating controls to neutral position after the test.

The equipment is now locked out. [Lock should be with one key under the custody of the person responsible for issue of Permit]

Appropriate Tag, duly filled in as mentioned earlier is to be hung with name, Permit No. & Key No.

5.0 Restoring Equipment to Service

When the job is complete and equipment is ready for testing or normal service, check the equipment area to see that on one is exposed.

The Applicant on ensuring as above will apply for restoring the energy

When equipment is clear and duly signed Permit copy is returned, remove all locks. The energy isolating devices may be operated to restore energy to equipment.

6.0 Record

The Details of Permits are to be entered in a Registrar with signature of authorized person [for electrical, permit will be issued by statutory qualified person] issuing Isolation Permit.

7.0 Training:

The Person authorized for carrying out LOTO must undergo requisite training to make him enable to carry out the job. Refresher Training for Authorized Person to be conducted at least once in every three years. General Awareness Training to be extended to the person performing work with LOTO. Record for the training to be maintained by the concerned agency in addition to H.R. Dept.

Specimen for Lock out – Tag out