Proposals are hereby invited for the appointment of a service provider to provide rigging services, VHF antenna mast maintenance, repairs, replacement, and support services on an ad hoc basis for a period of (5) five years at the Chief Dawid Stuurman International Airport (Port International Elizabeth Airport), Humansdorp forward relay station & radar site. Scope: Maintenance activities may include, but are not limited to the following activities: Annual Structural Inspection: 1. Mast structure, 2. Rust, 3. Cloud White and Signal Red colour, 4. Obstruction light inspection, 5. Antenna grounding, 6. Visual inspection of the antenna and mounting brackets, 7. Cable (stainless steel) ties for cables, 8. Report of deficiencies to be rectified, 9. Certification for compliance of mast. Corrective Maintenance (done as a remedial to deficiencies found in the Structural inspection): 1. Rust Treatment (Entire Mast), 2. Painting Mast (Cloud White and Signal Red), 3. Obstruction light changing globes, 4. Obstruction light changing fittings & enclosures, 5. Antenna grounding/earthing, 6. Cable (stainless steel) ties for cables, 7. Cable replacement on the mast (RF cable and electrical cable), 8. Replacing (installation work only) of antennas and associated mounting brackets (as the need may arise). (投標 №82901626cn)