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Safe Energy Isolations

Sources of energy must be isolated before plant maintenance work can commence. Hazardous energy sources include mechanical, chemical, electrical, hydraulic, radiation, thermal, gravitational, pneumatic, and kinetic energy systems. Deenergising equipment is one part of an Isolation Procedure or Lockout Tagout (LOTO) Procedure. In broad terms the procedure involves:

  1. Develop Isolation / Lockout Procedure

  2. Identification of the correct Isolation Point that powers the equipment

  3. Isolate the Isolation Point

  4. Lock the Isolation Point

  5. Verify the Isolation Point

  6. Record Isolation Procedure Execution Progress

  7. Analyse & Report Isolation Procedure Information

At Redbusbar we focus on improving the integrity of Isolation / Lockout Procedures. In essence, we supply cutting edge safety products and systems that assist your company to perform steps 1 to 7 above.

Lockout Procedure Steps and Redbusbar Products ?

Isolation Procedure Steps are listed below together with the Redbusbar products that will assist your company.  Click on the links to navigate to the product page.


Isolation Procedure Steps

IsolationPoint

SwitchFix

DeadEasy

SwitChek
Develop Isolation Procedure •      
Identify Isolation Point •      
Isolate Isolation Point        
Lock Isolation Point   •    
Verify Isolation Point     • •
Record Execution Progress •      
Analyse & Report •      

 



News

Nov 1, 2011

In April 2011 a minor change was made to DeadEasy 31 HMI PCB and DIN rail mount electronics PCB to provide better self test performance.  The current version is Minor Revision 3.  Normally the self test transmit signal path is from the transmitter through the lens cap, bounce off an operator’s hand, return through the lens cap and into the receiver which initiates a self test. We found that in the HMI Minor Revision 2, a portion of the self test transmit signal was passing through the HMI PCB and into the underside of the self test signal receiver.  This issue came out of left field as manufacturer’s data suggests only the top face of the receiver will receive signal.  The modification involved inserting a copper layer on the HMI PCB to block the bypassed transmit signal.  This had the effect of reducing the ambient noise level and allowed us to reduce the self test transmit signal threshold on the DIN rail mount electronics PCB.

Users of DeadEasy 31 Minor Revision 2 should not be concerned as the “better self test performance” allows us to identify construction issues better at the time of pre-dispatch testing.  The “better self test performance” is imperceptible to an operator.  Future purchases will be of Revision 3 units.

Changes to the HMI PCB and DIN rail mount electronics PCB, however means that DeadEasy 31 Minor Revision 3 HMI and DIN mounted electronics are not interchangeable with Revision 2 components.  The first DeadEasy 31 Minor Revision 3 versions carried the serial number #21D.  Serial numbers are hexadecimal.

In general, we suggest that HMI PCB and DIN rail mount electronics PCB carrying the same serial numbers be kept together in the installation as they are both from the same construction batch.



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