Transcript Work Permit System

Training Package
06/06
THE WORK PERMIT SYSTEM
(Reference document: AIGA 011/04 «Work Permit Systems»)
Asia Industrial Gases Association
298 Tiong Bahru Road, #20-01 Central Plaza, Singapore 168730
Internet: http//www.asiaiga.org
Acknowledgement
This document is adopted from the European Industrial Gases Association
document TP 10/04 – The Work Permit System, and acknowledgement and
thanks are hereby given to EIGA for permission granted for the use of their
document
Asia Industrial Gases Association
298 Tiong Bahru Road, #20-01 Central Plaza, Singapore 168730
Internet: http//www.asiaiga.org
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Asia Industrial Gases Association
298 Tiong Bahru Road, #20-01 Central Plaza, Singapore 168730
Internet: http//www.asiaiga.org
The Work Permit System: What is it?

A work permit system consists primarily of a standard procedure
designed to ensure that potentially hazardous routine and non
routine work on industrial installations can be carried out safely.
The procedure should define the need for the following essential
steps:
 Details of the necessary preparatory work
 Clear definition of responsibilities
 Appropriate training of the work force
 Provision of adequate safety equipment
 A formal work permit with or without attached specific checklists.

This work permit:
 specifies the work to be accomplished and authorizes it to be
started under the strict observance of consigned work and safety
procedures
 After information and agreement of all other concerned parties
(process, safety, customers, suppliers,…)
The Work Permit System :
When?

For all non-routine works,

For hazardous routine works not covered
by procedures,

When work is performed:
 by your employees
 and/or third parties
The Work Permit System (1/2):
For what kind of work?

A work permit is required in case of:
 Potential oxygen deficiency or enrichment
 Potential flammable/explosive atmosphere
 Potential high temperature/pressure
 Potential hazardous chemicals, e.g.: toxic substances
 Confined space entry, e.g.: tanks, cold box, pit, normally closed
vessels
 Bypassing or removing/altering safety devices or equipment
 Elevated works
 Introduction of ignited sources where not permanently allowed (fire
permit), e.g.: open flame, welding, grinding,
 Electrical troubleshooting or repair on live circuits
 Maintenance or repairs in areas or to equipment or lines, containing
or supposed to contain hazardous materials or conditions,
The Work Permit System (2/2):
For what kind of work?

Or also in case of:
 Manual or powered excavations
 Use of mobile cranes
 Insulation or catalysts handling
 Use of adapters
 Product conversion of stationary or mobile or portable
vessels and containers
 Temporary or permanent changes, alterations,
modification of equipment or processes,
 Exposure to traffic,
 Exposure to moving/rotating machinery
 In proximity of vents, liquid of gas
 On process lines with gas release
 Etc..
The Work Permit System : Why?
1. Because:
 In charge of the work, you don’t know everything
 about the site and the process around
 about the work
 Safety measures have to be prepared
 You cannot start the work without the OK of the
production personnel or the customer or the
supplier
 The production needs your OK in order to re-start
the plant after your work is achieved
2. To obtain a safe as well as a quick and cost effective
work
The Work Permit System : With who?
In order to define the scope of work for everyone
concerned/involved by and during the work, the
Work Permit must be prepared with:




The person responsible for the work
The person(s) in charge of the production, the
customer or supplier, who will release the process
before the work starts
The other work bodies
The person in charge of HSE measures
The Work Permit System : How?

Before issuing the Work Permit, you must:
Describe the work to be done
List all the specifications and drawings which are
required
Issue detailed planning with all involved entities
Determine the logging and tagging procedures

Fill-in together the work permit and sign,
The start of the work must be authorized by production
and/or user,
The re-start of the process must take place after the work
is finished.


The Work Permit System :
Review of flowsheets, drawings and
specifications
Purpose of the review is to ensure all key persons involved in job
planning have a thorough understanding of the job.
It should include:
Process fluids and materials involved,
Degree of isolation,
Effect of other processes,
Power supply isolation,
Specialist advice,
Location of underground services and pipes,
Location of elevated power cables,
Location of elevated pipelines and walkways,
Purging and lock-out requirements,
Pressure, Temperature,
Valve identification,
Equipment specification,
Operating and maintenance instructions,
Materials of construction and compatibilities
The Work Permit System :
Work site inspection
Anyone involved and signing the Safe Work Permit
must visit the work place in order:
• To inspect the work area
 Neighbouring activities, site rules, overhead,
underground, access, natural hazards (flood,
rain, snow…), etc,..
• To identify potential hazards
 Flammable, oxygen, toxic substances, confined
spaces, electricity, pressure, temperature,
moving objects, traffic, falls/trips/slips, etc,..
The Work Permit System :
Development of work procedures

Preparation of a detailed work procedure is essential to ensure
the work will proceed safely in a planned and logical manner:
Following requirements to be considered:
 Reference drawings, Timing of various operations,
Details of any special equipment, Needs to inform local
authorities, safety precautions and equipment,
Emergency procedures, etc,..

The procedure should include:
 Logging and tagging procedures: Electricity, process fluids
Instrumentation, utilities (water, air, oil,…)
 Depressurising, Draining, Venting, Purging, Flushing,
Isolating, Atmosphere checking, Disassembly of
equipment, Method of repair, Reassembly and
installation, Quality control, Pressure and leak testing,
Reinstatement of equipment, Hand-back procedure, etc..
Any attached document or log sheet ?
YES
NO
HOW MANY ………..
List of attached documents ……………….……………………….…………..……………...………………………………………………..
1. WORK ACTIVITY
Plant / Unit :………………...……………….…………………………………………………………………………………………………………..………...…
Description of work to be done………………....……..….………….…………….……………………………………………………………………….......…
Permit valid from :…………………………………………………………
Hours/date
To :…………………………………………………………………….
Hours/date
Have all relevant departments/personnel been consulted ?
YES
NOT APPLICABLE
2. POTENTIAL HAZARDS & HAZARDOUS JOBS
YES NO
The Work
Permit
System:
Example
of form
. Jobs performed by contractors or temporary workers
. Potential oxygen deficiency or enrichment
. Potential flammable / explosive atmosphere
. Potential high temperature / pressure
. Potential exposure to hazardous chemicals (toxic, reactive,
YES NO
. Maintenance or repairs in areas, or to equipment or lines,
containing or supposed to contain hazardous materials or conditions
acid, caustic….)
. Confined space entry
. Bypassing or removing/altering safety devices and equipment
. Elevated work
. Introduction of ignition sources where not permanently
. Manual or powered excavations
. Use of mobile cranes
. Insulation or catalyst handling
. Use of adapters
. Product conversion of stationary or mobile or portable vessels
and containers
. Temporary or permanent changes, alterations, modifications of
equipment or processes
. Exposure to traffic (road, mail)
. Exposure to moving / rotating machinery
allowed (fire permit)
. Electrical troubleshooting or repair on live circuits
Others (state) ……………………..……...…………………………………………………………………………
3. SAFETY PRECAUTIONS
YES NO
. Draining
. Depressurising
. Physical Isolation
. Electrical Isolation
. Safety tags and locks
. Flushing with water/solvent
. Steaming out
YES NO
. Remove hazardous materials
. Fresh air ventilation
. Atmosphere analysis :
. Oxygen
. Flammable
. Toxic
. Other
. Area marked off
. Warning notices
. Purging with inert gas/air
. Temperature normalisation
YES NO
. Standby man
. Elevated work
. Contractors trained
. Eliminate ignition sources
. Fire hose
. Fire screen
. Wet surrounding area
. Audible/visible warnings
. Clear area of combustibles
. Fire extinguishers
Others (state) …………….……………………………………………………………………………………
Type : ………………………………………..
4. PERSONNEL PROTECTION
YES NO
. Head
. Face
. Eyes
YES NO
. Ears
. Hands
. Feet
YES NO
. Body
. Breathing
. Others
State Special Requirements : …………………………………………………………………………………………………………………………
5. WORK AUTHORISATION
Issuer :
This certifies that I have consulted all relevant departments/personnel, discussed the scope of work, inspected the preparatory work
and the work area covered by this Work Permit. I therefore confirm that the work, as detailed in Section 1, can be carried out.
Name : …………..………………………….………………….………………………
Signature :
Person responsible for work : The successive steps of the work, the potential hazards and the safety precautions have been explained and understood.
Name / Company : ……………………………………………………………………
6. CLOSING
Signature :
The Work Permit System :
Work Planning









WORK SCOPE
REVIEW DRAWINGS / FLOWSHEETS
INSPECT WORKSITE
IDENTIFY SAFETY PRECAUTIONS
COMPLIANCE WITH REGULATIONS
DEVELOP WORK PROCEDURE
ASSIGN RESPONSIBILITIES
COMMUNICATION PROCEDURES
WORK EXECUTION
The Work Permit System :
Work Execution








PREPARATORY WORK
ISSUE WORK PERMITS
SUPERVISION MONITORING
WORK COMPLETED
TESTING
RE-INSTATE EQUIPMENT
RETURN WORK PERMIT
HANDBACK PLANT / EQUIPMENT
The Work Permit System :
Permit issuer’s responsibilities








INSPECTING WORK AREA
IDENTIFYING HAZARDS
DEFINING SAFETY PRECAUTIONS
OBSERVING PRINCIPLES OF SAFE WORKING
PRACTICES
CREATING WORK PERMIT CONDITIONS
REVIEWING WORK WITH PERMIT ACCEPTOR
ISSUING WORK PERMIT
IMPLEMENTING HANDBACK PROCEDURE
The Work Permit System :
Permit acceptor’s responsibilities
UNDERSTANDING OF WORK PROCEDURES
UNDERSTANDING POTENTIAL HAZARDS AND
SAFETY PRECAUTIONS
ACCEPTING THE SAFE WORK PERMIT
OBSERVING PERMIT CONDITIONS
COMPLYING WITH HANDBACK PROCEDURE
The Work Permit System : In brief
Many accidents have occurred due to lack of Work
Permit or non observance of its consigned safety
measures.

The Safe Work Permit is useful for:
 The safety of persons in charge of the work
 The safety of persons in charge of the process
 The risk management of the process and equipment

It is not one more administrative paper!

Fill in and follow correctly the work permit,
because….
It could save your life!