Conversion to gas lubrication extends MBTF from a few months to over 3 years
A Czechia-based pharmaceutical company was running a stainless-steel mixer vessel fitted with a John Crane T7700 90mm seal. Operating parameters are 80rpm, 130°C at 3 barg Client challenge: The liquid-lubricated seal was regularly failing within a few months. Repairs were carried out in-house but the frequesnt failures continued. The client needed to find a better […]
Dynamic Testing of Gas Seal Gives Pharmaceutical Manufacturer Added Reassurance
A pharmaceutical company based in Ireland had several Goulds STX pumps fitted with John Crane T2800E/0349 pressurised double gas lubricated mechanical seal cartridges. The pumps operate at 2900 rpm and the product temperature is ambient. Barrier gas is nitrogen. Client challenge: The company was looking for a more responsive service and higher quality seal repairs […]
Responsive Fluiten mechanical seal support for UK Combined Cycle Gas Turbine (CCGT) Power Plant
Fluiten BL3X/110 seal cartridges for Termomeccanica Boiler Feed Water (BFW) pumps sourced to ensure no overrun on a planned outage. The pumps operate at 2900 rpm, water temperature is 159 deg C and pressure is 35 Barg. Client challenge: A UK CCGT power plant needed 4 off new Fluiten seals to replace the installed seals […]
Laser etched containment seal face replaced
NASH quickly reverse engineers a laser etched seal face to ensure a pump repair is not delayed by a long lead time from the seal OEM. Client challenge Rotating equipment specialists and operators often experience a poor aftermarket response from seal OEMs. This is particularly true for engineered seal designs incorporating a dry running outboard […]
NASH steps in to ensure swift repair
After a rebuilt reclaimed oil pump developed bearing problems within 35 hours of commissioning, a NASH examination found minor damage before restoring the seal for extended long-term service. Client challenge When a rotating equipment service company’s instructions to grease bearings on a rebuilt reclaimed oil pump were misunderstood, knock-on damage to the mechanical seal was […]
Rapid repair of essential feed pump back-up seals
Extensive mechanical seal face and o-ring damage linked to high ferric oxide concentrations in power station feed water was repaired within a European client’s tight cost and time expectations. Client challenge Following the failure of boiler feed water pump mechanical seals – thought to be caused by a combination of incorrect o-ring specifications from a […]
North Sea KSB pump seal fully refurbished
The mechanical seal from a KSB submersible pump handling seawater was inspected, restored and return offshore swiftly, as the client requested. Client challenge Rather than go back to the pump OEM, our client asked NASH to inspect and restore proprietary parts of a KSB submersible pump seal with a faster turnaround time and more competitive pricing […]
Protecting North Sea crude oil production
Eliminating unplanned outages on North Sea main oil line (MOL) pumps caused by poor John Crane seal performance, extending MTBF, stopping output losses and cutting maintenance costs Client challenge Main oil line (MOL) pumps and their mechanical seals are critical to offshore oil production. When one platform operator reported an epidemic of MOL pump seal […]
Cost-saving solution for ageing North Sea platform
Saving £450,000 by upgrading and re-using six Flowserve mechanical seals rather than moving to more costly pressurised double seal systems in the North Sea Client challenge Reduced main oil line (MOL) and MOL booster pump mechanical seal service life was increasing pump outages and costs while seriously jeopardising crude oil output from an ageing North […]