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SILGuard Tank Overfill Prevention System

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SILGuard Tank Overfill Prevention System
Application

 
  • MTG SILGuard Tank Overfill Prevention System provides a SAFETY INSTRUMENTED SYSTEM (SIS) specifically for use in BULK LIQUID AND GAS STORAGE FACILITIES
  • MTG SILGuard is available for the range of modern storage tank designs, SENSING, ANNUNCIATING and optionally AUTOMATICALLY RESPONDING to any tank nearing overfill conditions
  • MTG SILGuard  provides a STANDALONE SAFETY FUNCTION as part of or separate from your tank gauging equipment
  • MTG SILGuard is designed complete with integrated proof testing facilities – with some technologies supporting PROOF TEST IN-SERVICE
   
Features and Benefits 
  • Comprehensive service from RISK ANALYSIS, LOPA, SIL DETERMINATION through to DEPLOYMENT, COMMISIONING and MAINTENANCE
  • SIL COMPLIANCE is provided for the INSTALLED SYSTEM (NOT just the components parts)
  • ATEX CERTIFIED hazardous area equipment
  • A range of overfill sensing technologies including RADAR for CONTINUOUS LEVEL REPORTING and VIBRATING FORK for IN-SERVICE PROOF TEST
  • OPTIONAL DUAL SENSORS provide HI and HIHI level sensing to integrate with determined operational RESPONSE TIMES
  • Safety functions include LEVEL DETECTION,  ALARM ANNUNCATION and AUTOMATIC VALVE CLOSURE
  • Compatible with the majority of REMOTE OPERATED SHUT-OFF VALVES
   
Sensing Technologies

 
 

RADAR – Continuous level measurement with alarm trip for Hi and/or HiHi conditions. Accuracy +/-2mm, Exd or Exi. Level reading can be forwarded on to tank gauging system.
 

VIBRATING FORK – Extra High Reliability – continuous self testing with optional IN LOOP PROOF TEST facility, Accuracy +/-1mm, Exd or Exi.
 

DISPLACEMENT FLOAT SWITCH – dual versions available, integrated padlockable self-test facility, Accuracy +/-5mm, Exd, Exi

 

Processing and Annunciation

 

 At the heart of SILGuard is a SAFETY PLC, programmed using function blocks by Certified Functional Safety Engineers.
For the safety functions, annunciation is made to external and internal BEACONS and SOUNDERS (often in redundant pairs) and tank ingress shut-off is achieved by direct action to failsafe SIL incorporated VALVE/ACTUATOR combinations.
Other options include full colour TOUCH SCREENS for continuous graphical display of tank status, or MIMIC PANELS where the tank alarm display can be incorporated into the safety function.
   
Competence     SILGuard is provisioned with competence. We will support you throughout the safety lifecycle process and help to establish and justify your case and assist with the interface to governing bodies such as the HSE.
We offer
  • Complete SAFETY LIFECYCLE MANAGEMENT and DOCUMENTATION is provided by Certified Functional Safety Engineers
  • HAZARDOUS AREA equipment selection, installation and maintenance by COMPEX Certified Engineers
   

Typical Safety Loops
Example Safety Function 1 : Tank Level sensing by radar gauge, closing remote operated shut off valve on overfill trip


Example Safety Function 2 : Tank overfill sensing by vibrating fork switch, advising alarms condition via dual klaxons

   

MTG SILGuard Tank Overfill Prevention System

Overfill Prevention Systems | API 5320 | Sil High Level Alarm

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