Koeberg Nuclear Power Station. Water Resilience Strategy. Presenter: Velaphi Ntuli Date: 14 February 2018

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Barbra Deirdre Welch
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1 Koeberg Nuclear Power Station Water Resilience Strategy Presenter: Velaphi Ntuli Date: 14 February 2018

2 Agenda Water Crisis Water Resilience Strategy Overview Koeberg Water Usage Overview Water Resilience Strategy - Pillars 2

Water Treated per year (million m 3 ) Population (millions) The water treated is decreasing while the Cape Town population is increasing resulting in a water supply challenge Water treated Population

3 Water Treated per year (million m 3 ) Population (millions) The water treated is decreasing while the Cape Town population is increasing resulting in a water supply challenge Water treated Population Expon. (Population) Key Facts The current water supply challenge in Cape Town Reducing Dam Storage Weekly Dam levels change 24.7% -0.6% 523 Average daily production (Ml/d) Level 6b water restrictions have been implemented since February 2018 Koeberg can currently only operate about two weeks without off-site potable water 3

4 Water Resilience Strategy Overview Started March 2017 To mitigate Business Risk Positively contribute to the efforts of the City Lessen impact of Day Zero to staff and contractors Has three pillars 4

5 Koeberg Power Station Technical Overview Human: 150 kl/day Balance: 400 kl/day 30 kl/day 320 kl/day 7,075,200 kl/day South Africa has one nuclear power station, located about 30 km from Cape Town, owned and operated by Eskom since

6 Nov-16 Dec-16 Jan-17 Feb-17 Mar-17 Apr-17 May-17 Jun-17 Jul-17 Aug-17 Sep-17 Oct-17 Nov-17 Dec-17 Koeberg has developed a robust water strategy to mitigate water shortage risks Key Insights KNPS Water Usage (m3/day) KNPS Water Usage (m3/day) Koeberg s total water usage has reduced and water savings of 35% since June kilo-litres saved equates to about houses receiving water for a month Achieved by rapid response to water leaks Creating water saving awareness amongst employees Implementing staff initiatives Optimising plant processes Still a potential to save an additional 130 kilo-litres per day There is confidence in the Koeberg plant s capabilities to achieve efficiency in water usage 6

7 Alternative Water Supplies Temporary Ground Water Desalination Plant Supplied from borehole system at Koeberg. Production capacity of 920 kl/day of high quality potable water to be used for process purposes and human consumption. Contractor to Build, Own, Operate and Maintain. Train 1 commissioned. Train 2 arrives end of March Increasing capacity to 1500 kl/day. Permanent Ground Water Desalination Plant Currently in the commercial phase. Due first quarter Sea Water Desalination In collaboration with the city working on a DCP If successful, will be followed by a large scale desalination plant 8

8 Current Eskom Project - Sea Water Desalination Plant This project is owned by the CoCT in collaboration with Koeberg and is divided into three phases: Data Collection Plant (DCP) will produce 0.1 Ml / day Pilot Production Plant (PPP) will give 10 Ml / day Full Scale Production (FSP) plant will give 3 x 150 Ml / day DCP- End of March (subject to statutory approvals) Safety Case with NNR PPP- 9 months after confirmation of data from DCT FSP- Long term (TBD) Current phase of the production plant is the detailed feasibility. 9

9 Water Storage Maintain all the storage tanks on site full Enable safe operation of the plant for two weeks Act as a buffer in the event that we need to provide staff with water 10

Closing Remarks 1 Eskom Koeberg has initiated a sustainable strategy to address the current water supply challenge in Western Cape enabling it to continuously provide safe electricity, by

2 3 Financial benefits for KNPS has been achieved by means of water usage reduction (±35% saving), and a further benefit with becoming independent of the CoCT water supply.

10 Closing Remarks 1 Eskom Koeberg has initiated a sustainable strategy to address the current water supply challenge in Western Cape enabling it to continuously provide safe electricity, by having an overriding focus on nuclear safety. 2 3 Financial benefits for KNPS has been achieved by means of water usage reduction (±35% saving), and a further benefit with becoming independent of the CoCT water supply. This has resulted in saving kilo-litres in the past 8 months thereby directly contributing to the efforts of the CoCT in averting day zero. This equates to 10.5 kl of water supplied to approximately houses for about a month 4 Collaboration between Eskom Koeberg and CoCT is exploring a large scale sea water desalination plant. 11

11 Questions? 12

Administration Division Public Works Department Anchorage: Performance. Value. Results.

Administration Division Public Works Department Anchorage: Performance. Value. Results. Administration Division Anchorage: Performance. Value. Results. Mission Provide administrative, budgetary, fiscal, and personnel support to ensure departmental compliance with Municipal policies and procedures,