Municipal Committee Dina (Ausschreibung №91476412de)

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Sprache: EN
Nummer: 91476412
Veröffentlichungsdatum: 02-10-2023
Quelle: PPRA SERVICES PORTAL

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Extension of Closing Date: Expressions of Interest/Information are hereby requested for the following: Procurement of Robotic Welding System. Eskom is faced with the ailing fleet of power stations which requires extensive and innovative maintenance. This, in turn, requires advanced repair methods, like robotic welding, to build-up the Rotor journals, casing’s locating landings, valves locating landings and other related components, to design sizes. Eskom Rotor journals (Kriel, Duvha, Majuba, and Tutuka LP’s) were previously machined to correct mechanical damage (grooves) and wearing that had occurred during operations. Machining of these journals resulted in substandard journals, and thereby limiting the interchangeability of the rotor within the same fleet. Therefore, the solution to this problem is to weld build the journals to design sizes. Humans are not completely removed from the usage of robotic welding systems. To use a robotic welding unit, programs are inputted via the teach pendant and saved to the controller, telling the robot what to do. These programs move the welding robot and dictate the movement of the torch on the end of its arm, placing it exactly where it needs to perform tasks. Robotic welding needs to be supervised constantly and maintained by a trained operator or someone certified for this skill. The rotor will have to be coupled to a rotating table and secured on the rollers to aid with the rotation during welding. The robot is programmed to follow a certain path to weld. A short calibration (integration) of the rotating rotor and the robot is performed. Welding commenced when the electrode reaches the required position. Then the welding head travels along the programmed pathway resulting in neatly welded seams. Please confirm the closing date and time as two were published. Quelle: ONLINE TENDERS

Quotations are hereby invited for the following: Supply of various steel items. Scope: 1. Plate; type: sheet, material: mild steel, dimensions: 3 mm, qty: 12; 2. Channel, structural; type: unistrut, cross section shape: u, width: 40 mm, height: 40 mm, length: 4 m, material: stainless steel, material thickness: 3 mm, material grade: 316; used for securing various type of limits item 144739, qty: 24; 3. Iron angle; 70x70x10x6m item 118784, qty: 12; 4. Bar, metallic; dimensions: wd 100 mm x lg 6.3 m x thk 10 mm, material: steel, shape: flat item 118793, qty: 20; 5. Angle iron; 50x50x5mmx6, item 118785, qty: 20; 6. Angle iron; 70x70x10x6m item 118784, qty: 30. Please note that this quotation was published late. Quelle: ONLINE TENDERS

Re-advertisement: Amendment to Closing Date: Eskom Holdings SOC Ltd (hereinafter “Eskom”) invites you to submit a tender for the following: Substation facilities and building maintenance, TX Western Grid (Northern Cape) as and when required for 36 months. Detailed scope of the project: • Refurbishment, repair, alterations to existing substation buildings, including work on asbestos; • Maintenance of existing substation buildings and infrastructure; • Repairs to access roads to and inside substations. Quelle: ONLINE TENDERS

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