Operations that require Permit to Work

Hot Work

A Hot Work is a work with a potential source of ignition or if it may produce a possible source of ignition.Exemption: Hotwork in Welding Shop
Examples

• Grinding;

• Chipping;

• Cutting;

• Welding;

• Burning;

• Temporary use of internal combustion engines and non-intrinsically safe (IS) equipment in Zones I or 2;

Attachments

• Risk Assessment;

• TBT;

• Fire Warden Checklist (on PTW);

Work at Height

Working above 2 m where fixed or temporary guarding is not provided is considered as Work at Height.Exemption: Derrickman racking pipes on Monkeyboard level
Examples

• Manriding Activities by Winch, Crane or Telehandler;

• Erecting or dismantling scaffolding;

• Greasing on Crown block;

• Dismantling/Removing of handrails, ladders, grating (rigging down and rigging up);

Attachments

• Risk Assessment;

• TBT;

Depending on the Ops nature:

• F-24 – Pre-Manriding Checklist;

• F-79 – Crane Manbasket Checklist;

• Scaffolding checklist (by 3rd Party);

Works with Dangerous Substances

Work with substances hazardous for health
Examples

• Handling Radioactives;

• Handling Explosives;

• Handling Chemicals that cannot be identified;

• Handling Chemicals that doesn’t have MSDS;

• Handling NORM contaminated equipment;

• Handling/Pumping Acid;

Attachments

• Risk Assessment;

• TBT;

• F-25 – Radio Silence Checklist;

• Explosives Checklist (by 3rd party);

Pressure Testing

Pressure testing of equipment, piping systems or hoses according to relevant procedures.
Examples

• Pressure test of any units/equipment, e.g.:Cement Unit;

• BOP;

• Test manifold;

• Choke manifold;

• Pressure lines;

• Pressure vessels;

• Well head;

• Silo;

• etc.

Attachments

• Risk Assessment;

• TBT;

Confined Space Entry

A confined space is any area with limited or restricted means for entry or exit and is not designed for continuous occupancy.
Examples

• Cellar;

• Mud Tanks;

• Sewage tanks;

• Water tanks;

•  Silos;

• Hydrocarbon tanks;

Attachments

• Risk Assessment;

• TBT;

• Confined Space Entry Checklist (on PTW);

• F-11 – Confined Space Monitoring Sheet;

• Isolation Certificate;

Well Operation/Well Intervention

Operations involving third party and unit own activities posing combination of multiple hazards.
Examples

• Well stimulation;

• Coiled tubing operation;

• Setting plug in or removal of X-mass tree.;

• Well testing activities, flow tests in particular;

• All Third Party activities related to well, e.g.:
  

  •  Installation of any third party equipment

  • Rigging up packer/larleur equipment;

  • Cementing and associated activities;

  • Wireline operation/production logging;

  • Pressure cleaning of tubulars by contractor;

Attachments

• Risk Assessment;

• TBT;

• F-39 – 3rd Party Equipment;

Isolation of Safety System

Work that involves isolation and testing or bypassing of safety systems.
For detailed listing of safety systems refer to HSE Case
Examples

• Work on any Safety Critical Equipment while drilling or workover:Emergency shutdown systems

• Firefighting systems

• Pressure Relief systems

• Detection systems

• Alarm systems

• Emergency power and non-interruptible power supply

• BOP and diverter systems

• Accumulators Unit maintenance during operations.

• Crown-o-Matic

• Floor-o-Matic

• Any other system designed or used to form a safety barrier.

Attachments

• Risk Assessment;

• TBT;

• Isolation Certificate;

Lifting

Non-routine Lifting Activities
Examples

• Lifting Personnel;

• Lifting more than 5t;

• Tandem Lifting;

• Lifting items over pressurized equipment such as producing wells, or pressure vessels;

Attachments

• Risk Assessment;

• TBT;

• F-59 – Lifting Plan;

Maintenance

Preventive and Troubleshooting Maintenance Activities
Examples

• Working on equipment that has auto or remote start functions;

• Non-routine maintenance in mast during normal operations;

• Working on equipment requiring any kind of isolation, either mechanical or electrical, e.g.
  

  • Changing liners on MPs

  • Draworks maintenace

  • Elmago maintenance

Attachments

• Risk Assessment;

• TBT;

• Isolation Certificate;

Other

Any operation that may pose a hazard due to its nature, or due to lack of safety barriers.
Examples

• Opening various valves that might lead to a spill of hazardous substances to the nature;

• Excavation on location while Unit is operating;

• Work above or around water tanks or pits;

• Erecting or moving equipment in close proximity to overhead power lines;

• Use of high pressure jetting equipment (>2000psi)

• Slip & Cut

• Re-charging of Nitrogen Bottles;

• Grit blasting;

Attachments

• Risk Assessment;

• TBT;

• Isolation Certificate;

• F-39 – 3rd Party Equipment;