Executive overview. Put yourself in the position of the Contractor’s senior management who need a high level overview of what is involved – the scope of work - so that they can decide when tendering whether they have the resources and capability to undertake the work. Include a description of the different services and disciplines of work involved within the service and the location where most of the work will be carried out.
Executive overview. The scope of service in this contract relates to the management, supervision, labour, consumable supply, provision of equipment, administration, warehousing and storage related to the service sandblasting/abrasive cleaning. The Employer’s objectives for this contract are security of supply, economies of scale, encouraging a long- term commercial relationship with the Contractor based on mutual trust, commitment to common goals and an understanding of each Party’s expectations and values. The method of assessment is described elsewhere in this Service Information.
Executive overview. Hendrina Power Station is a fossil fired power generating utility producing a generated capacity of 2000 MW. It uses demineralized water to produce steam which turns the turbine and produce power. The demineralized water produced needs to undergo through pretreatment process to remove turbidity and TOC to prolong life span of the resin installed in the Cation, Anion and Mixed bed vessels and consequently prevent fouling, erosion, scaling and the corrosion of the turbine and boiler plant.
Executive overview. The contract is for the appointment of an emergency hazmat response contractor to render services for Eskom Rotek Industries on an as and when required basis for a period of 36 months. Contract includes cleaning of any type of spillage, remediation of the contaminated soil if and when required, transportation of the waste material, disposing of the material and providing a compliant manifest and safe disposal certificate at a licensed hazardous waste disposal facility. Eskom Rotek Industries is made up of four product groups supported by a support function. These are Transformer and Switchgear services (T&SS), Logistics Services (LS), Bulk Material Services (BMS) and Construction services (CS). Transformer and Switchgear Services The product group performs the following functions: Transformer site services, works services, engineering services, projects, contracts, planning and logistics, receipts and despatch, and sales. Logistics Services The product group offers the following services, road transportation of abnormal loads (>80 tons), road transportation of goods by low be (25-80 tons), road transportation of goods (<35 tons), collection, transportation and disposal of general waste, health care risk waste (HCRW) and various hazardous waste. Bulk Material Services Bulk material Services provides strategic support to Eskom line divisions, mainly Generation in the form of coal transportation management, coal stock yard management, water plant operations and maintenance, common plant maintenance, coal combustible products, auxiliary systems, electrical, C&I and mechanical maintenance, land rehabilitation (Kilbarchan), ash and gypsum commercialisation as well as tailings dam operations. Construction Services The following portfolios exist within construction services: Generation and transportation related services, cabling, distribution, transmission and operational support. The above activities can result in hazardous waste spillages Specifications of spillages to be cleaned: Different types of oil spillages from vehicles. Diesel spillages Cement (in powder raw or pre-mixed form). Bitumen (working on tar road surfaces). Potentially various hazardous waste (e.g. chemical waste such as organic or inorganic solvents, POPS such PCB oil or PCB contaminated materials, HCRW( such as sharps, petri dishes, biological broths), sewerage waste, various sludge‟s such as paint sludge, lime sludge, oil or oil & water sludge, coal sludge, various liquid waste su...
Executive overview. Xxxxx Power Station has four cooling towers to supply cooling water (CW) in the station for cooling purposes. Cooling tower 1 and 2 are on the north side of the station to supply cooling to unit 1, 2 and 3 whereas cooling tower 3 and 4 provide cooling to unit 4, 5 and 6. Each individual fill sheet is 400 mm deep with the fill sheets stacked in a vertical orientation on top of each other in 3, and up to a maximum of 5 layers such that the maximum fill depth is 2.0 m deep. Spacers separate the adjacent asbestos sheets from each other. Cooling tower performance measurements indicate a significant deterioration in thermal performance which is contributing to high condenser vacuum ranging from 30MW to 120 MW and auxiliary load of up to 80MW on high cold gas temperatures. This specification is for the removal of all asbestos fill in cooling towers 1 to 4, the installation of modular fill and maintenance access. In addition the asbestos drift eliminators and distribution system shall be cleaned and repaired as required. Each of these towers is fitted with flat asbestos film fill. Each individual fill sheet is 400 mm deep,
Executive overview. The purpose of the Investment Policy Statement is to create a written document of guidelines and standards used in the selection of the portfolio’s investments, to provide the basis for ongoing monitoring of the portfolio, and the periodic evaluation of the investments as well as the investment advisor.
Executive overview. The provision of Hygiene and Pest Control services at Gauteng Operating Unit for a period of 3 years. The works amongst others consist of supervision, labour, equipment necessary to carry out Hygiene services. The listed facilities are current Eskom facilities that will require the Hygiene and Pest Control services(Non-Technical services), however the tenderer are to be informed that the below areas are subject to change .Any additional /exclusion shall be communicated in writing following the procurement process. Tenderers are advised to visit the site prior tendering to ascertain the Hygiene and Pest Control scope involved.
Executive overview. Hendrina Power Station is a fossil fired power generating utility producing a generated capacity of 2000 MW. The ash produced from combustion of coal is transported to the ash disposal site (ash dams) using motive water (Ash Water) through ashing lines. This water is recycled back into the ashing process continuously through the Ash Water Return lines (AWR). After settling the suspended particles on top of the ash dump the water is allowed to cascade down to ash dam 2 where it flows via penstock 7 into ash water dam 5. From dam 5 it flows through penstock 5 into two suction dams. From these it is pumped up to the AWR high level reservoirs which gravity feeds the ash plant in the station. The system is supplemented with concentrated cooling water (CCW) from the open cycle evaporative cooling water system due to evaporation and absorption losses. This operation causes a concentration of salts within the ashing water. This salinity in conjunction with high hydroxyl alkalinity (high pH) renders this water highly scale forming (mainly calcium carbonate). See attached a typical chemical analysis of the AWR water. The ashing lines do not scale up but rather erode due to the high energy and abrasive nature of this media However the AWR lines and related equipment do scale up significantly. If this water is not treated it will shortly be evident that the AWR pipelines and associated reticulation systems and equipment scale up to such an extent as to block them and render ashing and dusting impossible. The result of this will be the filling up of boiler ash and dust hoppers. The units would have to be shut down to clear these. This would be on going and would cause major production losses (UCLF). A scale inhibitor treatment programme has been in place since the early 90’s. This has been somewhat successful, however it was introduced after many years of scale build up had already occurred. The ability of the inhibitor to prevent further buildup of scale was proven in the usage thereof and the test and inspection programs carried out. The ability of the products used to remove existing scale was however not proven. The scale definitely became softer and came off in areas of high turbulence due to the scouring effect. A more aggressive approach using chemicals on line had a risk that should the scale come off in chunks the ashing plant may be totally choked up, shutting down the units. This risk was too high to be entertained. Ideally starting a chemical treatment prog...
Executive overview. Hendrina Power Station is a fossil fired power generating utility producing a generated capacity of 2000 MW. Each unit consist of condenser (heat exchanger), for steam cooling and condensing to condensate water that return back to boiler feed water for steam generation again, the process is a continuous cycle. The cooling system is supplemented with concentrated cooling water (CCW) from the open cycle evaporative cooling Tower system. The condenser uses cold-cooling water (FROM COLD DUCT) to cool down and condensate the steam, and the hot-cooling (FROM HOT DUCT) water will then be pumped to the cooling tower for heat loss and cool down to ambient temperature, and return back to the condenser, this process is a continuous cycle. This operation causes a concentration of salts within the cooling water system. This salinity in conjunction with high hydroxyl alkalinity (high pH) renders this water highly scale forming (mainly calcium carbonate) sometimes called Precipitation fouling. Of which under hot temperature condition the calcium carbonate precipitates in all plant heat exchangers and scaled up the heat exchangers tubes, thus reducing the effectiveness of heat exchanging and this promotes plant equipment under performance resulting in plant load losses. Precipitation fouling -The precipitation of dissolved substances on the equipment surface. This process is termed scaling and takes place once the solubility threshold is exceeded. Calcium carbonate has inverse temperature solubility characteristics and precipitation may take place on surfaces subjected to elevated temperatures. Scaling contributes to corrosion mechanisms taking place as it acts as a contributor to under deposit corrosion. Pitting and dezincification are direct results of scaling in heat exchangers. Biological Fouling - The attachment of macro and/or micro-organisms, and their subsequent metabolic by- products, onto the surfaces of the system. Successful mitigation of micro-biologically influenced corrosion (MIC) is achievable. The cost however could more than double any water treatment budget. In order to achieve the most cost effective microbial control programme, is it essential to intensively quantify the performance of the dosing regimen. The use of biodispersants in conjunction with biocides has proved to be successful. The control of the microbial population in the planktonic phase is complicated as a result of high make-up rates and favourable temperature conditions within the cool...
Executive overview. The existing paging system has only one functional paging terminal, with no spares to repair the system should it fail. Should this system fail, there would be no means to communicate to the Emergency Response Organisation (ERO) in the event of nuclear incident/accident. It should be noted that the system is a license requirement and in the event that this system fails, the station would be in violation of its operating license agreement. Should the system be upgraded to its original conditions, it would easily be rendered inoperable by flooding or seismic event as a result of an external environmental event. The requirement for the system is linked to the topic “Emergency Planning and Preparedness” as listed in the document ‘Nuclear Installation License No. NIL-1’. These requirements are further stipulated in the documents RD-014 and GSS-1301, both documents titled ‘Emergency Preparedness and Response Requirements for Nuclear Installations’. The upgrading of the system to address the EERI recommendations, that will similarly assure the NNR that KOU has an appropriate system in place to respond and handle an external environmental event.
