September 2018 | AIChE

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September 2018

2018 Freshman Recognition Award

Syed Mesam Ali Naqvi

2018 Freshman Recognition Award

2018 Freshman Recognition Award

Confined Space Entry - Reference Materials

Line Opening References:

 
  • OSHA Safety & Health Bulletin – Confined Spaces

            https://www.osha.gov/SLTC/confinedspaces/hazards_solutions.html

Confined Space Entry - Incidents

  • Test atmosphere

Surface Nonmetal Plant Kaolin Clay, Fatal Other Accident July 2015

 
 

  • Provide rescue plan and equipment

Surface Nonmetal Plant Kaolin Clay, Fatal Other Accident July 2015

Surface Nonmetal Mine (Limestone CB), Fatal Sliding Material Accident March 11, 2005

Confined Space Entry - Common Program Practices

Common Program Practices

  • Non-routine work increases process risk and can directly lead to conditions that make a catastrophic accident much more likely.
  • Safe work practices are critical elements in the management of this non-routine work.
  • Safe work practices include an integrated system of policies, procedures and permits that help protect workers from hazards and prevent the sudden release of process materials or energy during non-routine work activities.

Confined Space Entry - Possible Work Flow

Person In Charge

Is responsible for the Operation of the Plant. This is typically a Site Manager whose responsibilities include:

Confined Space Entry - Strategies & Effective Practices to Manage and Mitigate Hazards

Effective Practices to Manage and Mitigate Hazards

 

Reduce risk by minimizing confined space entry work on vessels connected to equipment still in operation

  • Consider deferring confined space entry to a future turnaround or outage when inventories of hazardous materials are at a minimum or eliminated.
 

Properly isolate line or equipment to be worked on

  • Use blinds or physical disconnects.
  • Do not use valves as isolation devices.

Confined Space Entry - Potential Hazardous Consequences

Potential Hazardous Consequences

 

Property Damage (Fire / Explosion)

  • A release of hazardous material during a confined space entry can be caused by improper cleaning of scale in the equipment and hazardous material being trapped or improperly isolated equipment.  Property damage can happen if released materials are flammable and ignition sources are available during the confined space entry. 
 

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