Achieving a 50% reduction in barrier gas consumption by repairing, modifying and re-commissioning John Crane mechanical seals on six Pfaudler glass-lined reactors in Eire
A pharmaceuticals manufacturer needed help in meeting a tough four-week window for reinstating and dynamically testing six double gas lift-off mechanical seal cartridges in order to maintain production schedules.
NASH worked closely with Pfaudler Service Technicians to repair John Crane CK738G seals and reconfigure as John Crane CK738GD seals successfully within the tight time restraint.
- Working with Pfaudler, NASH’s headquarters’ team:
- Took delivery of 80mm, 100m and 125mm seal cartridges fitted to Pfaudler glass-lined reactors
- Evaluated damage and damage causes
- Repaired the inboard seals to original specification
- Modified outboard seals from lift-off to dry-contacting
- Reassembled the seals with new springs, elastomers and fasteners
- Tested each seal dynamically to verify performance prior to return shipment
- All six reactors were re-commissioned within six weeks
- A 50% saving was made on nitrogen seal barrier gas use
- Total costs were well below the OEM equivalent