Thames Barrier Mirrlees Blackstone Engines Three-Quarter Life Survey

The three Mirrlees Blackstone engines (ESL16 twin bank engine) installed at Thames Barrier are fast approaching their anticipated three- quarter life survey . The following inspections and component overhaul are proposed , in order to enable the engines to be suitable for a further 10-15-year period.

1. Nodal Damper Coupling (NDC) fluid level check

2. Gearbox bearing and final alignment verification

3. Cylinder Liner Nose O-ring Renewal

4. Liner deglazing and Piston Ring Pack replacement

5. Cylinder Head Decarbonising and Pressure Test

6. Jacket Water Pump.

7. Standard Service Procedures

Within procedures 1 - 6 carry out standard service work to include:

• Recalibration of fuel injectors (does not include nozzle replacement)
• Pressure testing of internal fuel system
• Renewal of lube oil filter elements (engine)
• Renewal of lube oil filter elements (gearbox)
• Renewal of fuel filter elements
• Re-setting of exhaust valve tappet clearances
• Visual Inspection of internal pipework
• Visual Inspection of camshaft assembly and drive gear train
• Visual Inspect all coolers and heat exchangers for external leakages
• Operational check and adjustment of mechanical overspeed
• Operational check and adjustment of decompression system
• Renewal of all crankcase and camshaft door joints
• Check and record crankshaft deflections
• Measure and record crankshaft end float
• Operational check and adjustment of internal and external fuel rack linkage
• Operational check of engine and gearbox lube oil pre-prime system

8. Recalibration of on engine sensors

9. Re-commissioning / load test

The engineer/s working on the project must have in-depth knowledge of ESL 16 twin bank engines, with proven evidence of experience. The successful supplier will provide spares when required, within a reasonable lead time.

The preferred supplier must be CTC (counter terrorist check) cleared prior to contract award.