PERMIT TO WORK, LOTO & RISK ASSESSMENT POWERPOINT

PERMIT TO WORK 

Table of Content

• Basic Permit Details.
• Hazards of Non-Compliance to PTW/ LOTO.
• Scope of Permit.
• Definitions.
• Competent Person responsibilities.
• Senior Authorized Person responsibilities.
• Authorized Person responsibilities.
• Control Person responsibilities.
• Types of Permits.
• Types of Certificates.
• LOTO 6 Steps.
• LOTO System at…..
• LOTO Sequence at…..
• Risk Assessment Technique.
• Risk Assessment at……..

Basic Permit Details

• What is a permit?
  It’s a part of a safe system of work to control high-risk activities, such as hot work, confined spaces, excavation, and work on electrical equipment.
  It ensures that all risks have been identified, precautions are in place before, during, and after work, and appropriate information is communicated to all relevant parties.
• Permit to Work (PTW):
  A formal document specifying the work to be done, hazards, and precautions. It provides a clear written record signed by a responsible person/supervisor that all foreseeable hazards have been considered and necessary actions taken. Must be in possession of the person in charge before work commences.
• Common Sections of PTW:
  Issue, Acceptance, Clearance, Cancellation.

Hazards of Non-Compliance to PTW/ LOTO

• Puts team at fatal risk due to:
  Hazardous substances, hot/cold temperatures, electrical hazards, mechanical energy hazards, hazardous areas, height dangers, radioactive substances, dangerous fumes.
• Puts equipment and business at risk.
• Puts environment at risk.
• Leads to direct costs (first-aid, hospital treatment, equipment replacement, overtime).
• Leads to indirect costs (loss of competent staff, morale, investigation costs, loss of customer goodwill, overtime to meet deadlines, recruitment/training costs).

 

Scope of Permit

• This contains Procedure, Definition, and Guidelines. It is only applicable to commissioning activities at the PROJECT SITE.

Definitions

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Competent Person Responsibilities

• Shall comply with Safety Rules stated in [].
• Works within the limit of the work scope of the permit.
• Retains Safety Document and Keys in safe custody and displays at job location.
• Provides immediate/personal supervision as required.
• Warns and withdraws personnel if hazards arise.
• Reports hazards to Senior Authorized Person.
• Signs clearance only when site is safe.
• Ensures tools/gear removed, guards replaced, housekeeping done.
• Manages permit transfer/suspension with Senior Authorized Person.
• Provides personal supervision for restoration of power (PFW) or tests (SFT).

HEI-Contractor’s Competent Person Authorization:
Nominated by Department Manager/Lead via email to Project & Commissioning Manager. Approved after interview on PTW, LOTO & Risk Assessment.

Competent Person = KATE:
K = Knowledge, A = Ability, T = Training, E = Experience.

Senior Authorized Person Responsibilities

• Complies with Safety Rules stated in [].
• Implements procedures for releasing Plant/Apparatus for work/testing.
• Ensures all safety precautions are completed.
• Obtains agreement from Control Person for release.
• Confirms safety precautions with Control Person for HV systems.
• Ensures feedback is considered.
• Decides on drain earths, venting, purging, and stored energy.
• Specifies conditions for removing/reapplying safety precautions.
• Issues Safety Document, keys, and decides supervision level.
• Manages transfer/suspension of Safety Documents.
• Informs Control Person upon completion.
• Cancels Safety Document and ensures Plant/Apparatus is ready for service.
• Decides work/testing limits and issues Limited Work Permit if needed.
• Determines LV work method (routine, Safety Document, or Personal Supervision).

Authorized Person Responsibilities

• Carries out work area inspection and follows SAP instructions.
• Receives Isolation Certificate, locks, and tags from SAP to effect isolation.
• Records name, date, time, and signs Isolation Certificate.
• Hands over keys to SAP for permit issuance.
• Removes isolations upon SAP’s request after permit cancellation.
• Performs switching operations up to 6.6kV; above that is Control Person’s responsibility.
• For Sanction for Test: removes isolations as requested, signs, and hands permit to Competent Person.
• May be required to be present during testing.
• Reinstates safety precautions after testing.
• Ensures security of isolations, guards, safety devices, and stored energy dissipation.

Control Person Responsibilities

• Agrees to release of Plant/Apparatus for work/testing.
• Acknowledges completion of work/testing and any restrictions on returning to service.
• Takes over plant/apparatus after permit cancellation and isolations removed by Authorized Person.

Types of Permits

1. Permit for Work:
   Used when precautions are needed to achieve safety for work on apparatus. Protects employees in hazardous situations.
2. Limited Work Permit:
   Used when limiting work/access alone ensures safety. No isolation required.
3. Sanction for Test:
   Used for testing with adequate precautions. Requires surrender of other permits; only one safety document issued.

 

Types of Certificates

1. Isolated:
   Disconnected by isolating device, physical separation, or sufficient gap.
2. Hot Work:
   Work involving burning, welding, cutting, grinding, or spark-producing tools.
3. Confined Space:
   Not designed for permanent occupancy, limited access/egress, large enough for one person to enter.
4. Excavation:
   Moving earth/rock with tools, equipment, or explosives for construction.
5. Radiation:
   Emission of energy as waves/particles (e.g., radio waves, X-rays, gamma radiation).
6. Diving:
   Descending in water for inspection, maintenance, filming, or recording.

General Instructions

• Duration of permit & certificates: 1 whole shift, then reissued.
• Permit transferable up to 2 weeks from issue, then cleared/cancelled.
• Possible attachments: Required Certificates, Key Safe Key, Daily TBT, Risk Assessment, Confined Space Log, Rescue Plan, and Hot Work Monitoring Sheet.
• Suspended during plant emergency; reissued after SAP approval.
• Transfer required if SAP or CP changes.
• Isolations in Isolation Certificate must be reviewed before permit issuance.

LOTO 6 Steps

1. Preparation: SAP & AP investigate hazardous energy. CP can request isolations.
2. Shut Down: Control Person initiates shutdown. AP may do so if nominated by SAP.
3. Isolation: Isolate from energy sources (electrical, hydraulic, pneumatic, etc.) as per Isolation Certificate.
4. Lockout/Tagout: Attach locks/tags to energy-isolating devices. Fill tags with name, sign, and contact number.
5. Stored Energy Check: Release residual/stored energy (e.g., venting, purging).
6. Isolation Verification: Authorized Person verifies isolation. CP checks isolations before work begins.

LOTO System at ….

(Placeholder content – system description not detailed in provided text.)

LOTO Sequence at …..

1. SAP designates person to apply isolation locks/tags at equipment.
2. Isolation keys placed in Key Safe box.
3. Control Lock Key moved to Key Safe Cabinet and secured by SAP.
4. Key Safe box key handed to Competent Person upon permit acceptance.
5. Multiple work sections: multiple Key Safe locks applied.
6. After job completion, CP returns Key Safe keys to SAP.
7. SAP removes Key Safe locks and opens Key Safe.
8. Isolation keys released for de-isolation after control lock removal.

Risk Assessment Technique

• Risk: Likelihood of harm combined with severity.
• Hazard: Something that can cause harm (e.g., electricity, chemicals).
• Risk Assessment: Formal process to identify hazards, assess risk, and eliminate/control it.

Objectives:

• Prevent death, injury, loss incidents.
• Avoid legal breaches and prosecution.
• Reduce direct/indirect costs after accidents.

Five Steps of Risk Assessment:

1. Identify hazards.
2. Identify people at risk and how.
3. Evaluate risk and decide precautions.
4. Record findings and implement.
5. Review and update.

Hazard Identification Methods:

• Inspection.
• Task Analysis (SREDIM):
• Select task
• Record steps
• Evaluate risks
• Develop safe method
• Implement method
• Monitor effectiveness
• Legislation
• Manufacturer Information
• Incident Data

Identifying Population at Risk:

• Workers/operators
• Maintenance staff
• Cleaners
• Contractors
• Visitors
• Public

 

Risk Assessment at …..

(Placeholder content ...)

 

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