Section one: Contracting authority
one.1) Name and addresses
Defra Network eTendering Portal
17 Nobel House
London
SE7 8LX
lu.mao@environment-agency.gov.uk
Telephone
+44 2072385921
Country
United Kingdom
NUTS code
UK - United Kingdom
Internet address(es)
Main address
https://defra.bravosolution.co.uk/
one.3) Communication
Additional information can be obtained from the above-mentioned address
one.4) Type of the contracting authority
National or federal Agency/Office
one.5) Main activity
Environment
Section two: Object
two.1) Scope of the procurement
two.1.1) Title
Thames Barrier Mirrlees Blackstone Engines Three-Quarter Life Survey
two.1.2) Main CPV code
- 71333000 - Mechanical engineering services
two.1.3) Type of contract
Services
two.1.4) Short description
The three Mirrlees Blackstone engines (ESL16 twin bank engine) installed at Thames Barrier are fast approaching their anticipated three- quarter life survey .
two.1.6) Information about lots
This contract is divided into lots: No
two.2) Description
two.2.2) Additional CPV code(s)
- 71333000 - Mechanical engineering services
two.2.3) Place of performance
NUTS codes
- UK - United Kingdom
two.2.4) Description of the procurement
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.
two.3) Estimated date of publication of contract notice
12 December 2022
Section four. Procedure
four.1) Description
four.1.8) Information about the Government Procurement Agreement (GPA)
The procurement is covered by the Government Procurement Agreement: Yes