Permit to Work Systems and Types of Work Permit

 Permit to Work System

What is Permit to Work(PTW) System?

A Permit to Work System (PTW) is a standard operating procedure used by organizations to document permission to perform tasks that are considered hazardous or non-routine. A permit to work form provides specific instructions on the nature of the job, the time and place as well as adequate information on safety procedures to be followed.

Types of Work Permit?

It's vary organization to organization and it depends on the nature of organization but there are main 7 types of work permit.

1. Hot Work Permit
2. Cold Work Permit
3. Height Work Permit
4. Excavation Permit
5. Electrical Isolation Permit
6. Confined Space Work Permit
7. Chemical Work Permit

1. Hot Work Permit 

Permission to carry out tasks in conditions that produce sparks, flames, or any other source of ignition.

Welding, soldering, flammable gases, and other heat-inducing operations require a Hot Work Permit.

                                                                  

       

2. Cold Work Permit

Authorizing for Operating machinery or other functions that do not generate any heat during the manufacturing process. 

Bending and shearing caused by mechanical means, squeezing and drawing are some examples of Cold Work Permit.

3. Height Work Permit

Authorization is required to work on elevated surfaces (2m from the ground), whether it be ladders, scaffolds, Mobile Elevated Work Platforms (MEWPs), or other elevated areas.

                               

4. Excavation Permit

People are authorized to mine or dig land in order to build infrastructure, extract resources, or unearth hidden artifacts.

Explosions, airborne contaminants, falling, being trapped, etc. are all risks of excavation.

                                            

 

5. Electrical Isolation Permit  

Permission to work in areas with high voltage and potential for uncontrolled dispersion of electricity. A common electrical isolation job involves managing and maintaining lockout systems and site maintenance by electrical engineers.

      

6. Confined Space Wo6. Confined Space Work Permit

Permission to perform tasks in a narrow space that may present hazards such as asphyxiation, a substance that can engulf, toxic atmosphere, etc. Vents, shafts, sewages, tanks and more are examples of confined spaces.

 

7. Chemical Work Permit

Authorization for working with toxic or corrosive chemicals or chemically induced atmospheres. Chemical engineers that mostly work in chemical plants and labs.