After Sales Support – Site services

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Spectrum of Tehnical Services:
    • Our experts are trained specially and familiar with all functional part of Natural Gas Pressure Regulating and metering skid equipments in Gas IPRS / MRS / DPRS etc.
    • We undertake Maintenance contracts, which relieve our customers and guarantee that the maintenance work will be carried away during predefined time period irrespective of the problem noticed or where ever the problem reported.
    • We stock all necessary emergency spares to support our esteemed customers.
    • Our service dept is able to carry out maintenance works and repairs as well as conversions on site. Completed work can be tested fully functionally as per IGE requirements.
    • We have our service vehicles, fully equipped with all necessary tools and equipments to normalize the equipments in shortest time, cost effectively.
    • We have our test set up in the workshop to carry out the pressure and flow test for regulators, safety valves and slam shut valves.
    • We do carry out the calibration of the custody transfer meter / flow computers at site / or at our workshop. This includes the PT/DPT/TT routine calibration for orifice type metering
Persons required to carry out maintenance work:
  • Skilled person
    • A fully trained person, knowing the functionality of the Natural gas Pressure Regulating and metering modules, Bechlor of engineering and diploma engineers fully trained on Nirmal’s equipments.
  • Semi Skilled Persons
    • A fully trained on repairs jobs on Valves and knowing the safety rules work under skilled persons.
Various tasks to be carried out on Gas Stations:
  • Visual Checking
  • Inspection
  • Functional tests
  • Servicing and Repairs
  • Re commissioning
  • Operation of Bypass and stanby lines

To carry out above functions skilled and semiskilled persons are required.

Tasks with functional tests and servicing carried out by our team during the service contracts:
  Component   Functional Test   Maintenance  
 
Filter / KOD
 
• External leakage test
• Check of control instrumentations like DPG/DPT/LS/LT
 
• Cleaning or replacement of filter elements
• Cleaning of pressure vessel / replacement of damaged parts
• Internal test and strength tests
 
 
Heat Exhanger
 
• External leakage test
 
• Cleaning of pressure vessel / replacement of damaged parts
• Internal test and strength tests
 
  Component   Functional Test   Maintenance  
 
Slam Shut Off Valve ( SSV)
 
• External leakages at
operating pressure
• Checking of Set point for
UPSO and OPSO pilots.
• Check of leak tightness of
the seat.
• Full functional test
 
• Dismantling of the valves and check all the components.
• Cleaning of the valve body and parts.
• Replacement of the necessary spares
• Full functional test and resetting of the requested set points.
 
 
Creep Relief Valves ( CRV)
 
• External leakages at
operating pressure
• Check of leak tightness of
the seat.
• Full functional test
 
• Dismantling of the valves and check all the components.
• Cleaning of the valve body and parts.
• Replacement of the necessary spares
• Full functional test and resetting of the requested set points.
 
  Component   Functional Test   Maintenance  
     
• External leakages at
operating pressure
• Checking of Set point for Active and monitors for active and standby streams.
• Check of leak tightness of
the seat.
• Full functional test
 
• Dismantling of the valves and check all the components.
• Cleaning of the valve body and parts.
• Replacement of the necessary spares
• Full functional test and resetting of the requested set points.
 
  Component   Functional Test   Maintenance  
 
Ball valves
 
• Check Position and free
movement
• Check of internal and
external leak tightness
 
• According to Manufacturer standards
 
 
Gate valves
 
• Check Position and free
movement
• Check of internal and
external leak tightness
 
• According to Manufacturer standards
 
  Component   Functional Test   Maintenance  
     
• Check of calibration
• Check zero and working /limit values
 
• Calibration according to manufacturer recommendations.
 
  Component   Functional Test   Maintenance  
     
• Calibration help can be provided as per industry standards.
 
• Industry standards
• Pressure and Temp Calibration.
• Check on the parameters as per AGA requirements/ NX-19
 
  Component   Functional Test   Maintenance  
     
• Seat Leak tightness check
 
• Mfr standard
• Checking the soft Disc / metal surface for damages, replace / repair the same.
 
  Component   Functional Test   Maintenance  
     
• Functional check / stroke
checks
• Fail condition checks
 
• Calibration of I to P , Positioner and strokes of the valves.
• Leak tightness check
 
  Component   Functional Test   Maintenance  
     
• Shut down can be checked
with bypass valve open / by
few turns of the valve and
resetting the same.
• Checks of SOV and all
accessories
 
• Actuator stroke at designed air pressure
• Seat Leak tightness check
• Replacement of seat / gland etc if required
• Sealant injection etc.