SA kernkragkundiges in aanvraag
SA kernkragkundiges in aanvraag

SA kernkragkundiges in aanvraag

Baie van die Kernenergiekorporasie van Suid-Afrika (Necsa) se kundige mense het al afgetree, maar hul kundigheid is steeds beskikbaar.
Francois Williams



Suid-Afrika het van sy kernkragkundigheid verloor nadat die korrelbedkernreaktorprojek (PBMR) in 2010 gestaak is en oudpres. Jacob Zuma se troetel­projek vir nuwe kernkrag in 2017 deur 'n hofbeslissing gestuit is.

Maar die land het ook die ­afgelope jare 'n suksesvolle uitvoerder van kernkragkundigheid geword danksy die swakker rand en die benutting van die kernkragvaardighede wat steeds in die land is, sê dr. Derik Wolvaardt, kerningenieurswesedeskundige by die kragmaatskappy Lesedi.

Wolvaardt het in 'n onderhoud by die Africa Energy Indaba in Kaapstad gesê Lesedi help om die land se kernkragkundigheid te behou deur internasionale opleidingsprojekte te koördineer waardeur ingenieurs van Zambië en Rwanda, byvoorbeeld, opgelei word.

Zambië en Rwanda het albei ambisies om hul eie produksiegeriewe vir kern-isotope vir mediese gebruik te ontwikkel.

Danksy bekwame universiteite soos die Universiteit van Kaapstad, die Noordwes-Universiteit en Wits, asook die feit dat Suid-Afrika Engels gebruik en in dieselfde tydsone val, is dit veel makliker vir sulke lande om hul ingenieurs hierheen te stuur vir opleiding, sê Wolvaardt.

Daar is tans 30 Zambiese ingenieurs in Rusland vir opleiding en dit is vir hulle baie moeilik, want hulle moet eers Russies aanleer.

Wolvaardt sê daar is tans sowat 120 Suid-Afrikaners, meestal mense wat voorheen by die Koeberg-kernkragstasie gewerk het, wat in Abu Dhabi in die Verenigde Arabiese Emirate (VAE) help bou aan die VAE se eerste kernkragstasie, Barakah.

Baie van die Kernenergiekorporasie van Suid-Afrika (Necsa) se kundige mense het al afgetree, maar hul kundigheid is steeds beskikbaar en volgens Wolvaardt word hulle byvoorbeeld gereeld deur die Internasionale Atoomenergieagentskap (IAEA) benut vir inspeksiebesoeke in verskillende lande waar nuwe kernkragstasies gebou word.



KOEBERG

Met die plaaslike kernkragbouprogram wat vir eers gestaak is, gebruik Lesedi sy kern-ingenieurs toenemend ook vir die konvensionele kragopwekkingskant, soos by Eskom se Medupi- en Kusile-kragstasie, en aan die program om die Koeberg-kernkragstasie se leeftyd met nog 20 jaar te verleng. Lesedi is ­betrokke om onder meer die stoomopwekkers en wateropgaartenks by Koeberg te vervang.

Wolvaardt sê die verlenging van Koeberg se bedryfstyd is terloops die goedkoopste manier om “nuwe” kernkrag te bou, en is selfs goedkoper as aflandige windkrag of sonkrag.

Die verlenging van Koeberg se leeftyd is volgens Wolvaardt een van die belangrikste ­energieprojekte in die land, want dit sou ­rampspoedig wees vir veral die Wes-Kaap as Koeberg in 2024 moes sluit. Koeberg is tans die betroubaarste kragstasie van Eskom en lewer 90% van die tyd krag teen die laagste koste van al Eskom se kragstasies.

Dit is omdat Koeberg se kapitaalkoste al ná 15 jaar gedelg is, en die kernbrandstof is veel goedkoper as steenkool.



KORRELBED

Baie van die kern-ingenieurs wat by die PBMR gewerk het, is na Amerika, wat self aan 'n klein modulêre kernreaktor werk. Daar is wêreldwyd meer as 50 projekte om klein modulêre kernreaktors soortgelyk aan die PBMR te bou, sê Wolvaardt.

Lesedi is self ook een van die maat­skappye wat belang stel in Eskom se korrelbedkerntegnologie.

Eskom het onlangs 'n tender uitgereik om die oorblyfsels van die eertydse PBMR-maatskappy, wat sedert sy sluiting in 2010 in veilige bewaring by Eskom gehou is, te verkoop.

– Netwerk24

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Nam 2.22 SAME | Oryx Properties Ltd 12.1 UP 1.70% | Paratus Namibia Holdings 11.99 SAME | SBN Holdings 8.45 SAME | Trustco Group Holdings Ltd 0.48 SAME | B2Gold Corporation 47.34 DOWN 1.50% | Local Index closed 677.62 UP 0.12% | Overall Index closed 1534.6 DOWN 0.05% | Osino Resources Corp 19.47 DOWN 2.41% | Commodities: Gold US$ 2 301.81/OZ DOWN -0.0011 | Copper US$ 4.53/lb UP +1.46% | Zinc US$ 2 924.30/T DOWN -0.08% | Brent Crude Oil US$ 83.49/BBP DOWN -0.0105 | Platinum US$ 955.87/OZ UP +0.28% Sport results: Premier League: Liverpool 4 vs 2 Tottenham Hotspur | Brighton 1 vs 0 Aston Villa | Chelsea 5 vs 0 West Ham | Manchester City 5 vs 1 Wolves | Brentford 0 vs 0 Fulham | Sheffield United 1 vs 3 Nottingham Forest | Burnley 1 vs 4 Newcastle | Arsenal 3 vs 0 Bournemouth | Luton Town 1 vs 1 Everton | Chelsea 2 vs 0 Tottenham Hotspur LaLiga: Rayo Vallecano 0 vs 1 Almería | Sevilla 3 vs 0 Granada | Valencia 0 vs 1 Deportivo Alaves | Celta Vigo 3 vs 2 Villarreal | Osasuna 0 vs 2 Real Betis | Mallorca 0 vs 1 Atletico Madrid | Girona 4 vs 2 Barcelona | Real Madrid 3 vs 0 Cadiz | Real Sociedad 2 vs 0 Las Palmas | Getafe 0 vs 2 Athletic Club SerieA: AS Roma 1 vs 1 Juventus | AC Milan 3 vs 3 Genoa | Empoli 0 vs 0 Frosinone | Hellas Verona 2 vs 1 Fiorentina | Cagliari 1 vs 1 Lecce | Sassuolo 1 vs 0 Inter Milan | Monza 2 vs 2 SS Lazio | Torino 0 vs 0 Bologna European Championships Qualifying: Plymouth Argyle 1 vs 0 Hull City | Birmingham City 1 vs 0 Norwich City | Coventry City 1 vs 2 Queens Park Rangers | Stoke City 4 vs 0 Bristol City | Swansea City 0 vs 1 Millwall FC | Leeds United 1 vs 2 Southampton | Ipswich Town 2 vs 0 Huddersfield Town | Sunderland 0 vs 2 Sheffield Wednesday | Rotherham United 5 vs 2 Cardiff City | Middlesbrough 3 vs 1 Watford | Leicester City 0 vs 2 Blackburn Rovers | West Bromwich Albion 3 vs 0 Preston North End English Championship: Plymouth Argyle 1 vs 0 Hull City | Birmingham City 1 vs 0 Norwich City | Coventry City 1 vs 2 Queens Park Rangers | Stoke City 4 vs 0 Bristol City | Swansea City 0 vs 1 Millwall FC | Leeds United 1 vs 2 Southampton | Ipswich Town 2 vs 0 Huddersfield Town | Sunderland 0 vs 2 Sheffield Wednesday | Rotherham United 5 vs 2 Cardiff City | Middlesbrough 3 vs 1 Watford | Leicester City 0 vs 2 Blackburn Rovers | West Bromwich Albion 3 vs 0 Preston North End Weather: Katima Mulilo: 14° | 33° Rundu: 14° | 32° Eenhana: 13° | 33° Oshakati: 15° | 32° Ruacana: 16° | 34° Tsumeb: 16° | 31° Otjiwarongo: 14° | 30° Omaruru: 14° | 32° Windhoek: 12° | 27° Gobabis: 14° | 28° Henties Bay: 14° | 20° Wind speed: 18km/h, Wind direction: S, Low tide: 10:44, High tide: 04:42, Low Tide: 22:59, High tide: 17:11 Swakopmund: 16° | 17° Wind speed: 20km/h, Wind direction: SW, Low tide: 10:42, High tide: 04:40, Low Tide: 22:57, High tide: 17:09 Walvis Bay: 17° | 23° Wind speed: 25km/h, Wind direction: SW, Low tide: 10:42, High tide: 04:39, Low Tide: 22:57, High tide: 17:08 Rehoboth: 14° | 29° Mariental: 17° | 31° Keetmanshoop: 17° | 31° Aranos: 16° | 30° Lüderitz: 14° | 24° Ariamsvlei: 16° | 33° Oranjemund: 13° | 21° Luanda: 25° | 30° Gaborone: 15° | 29° Lubumbashi: 13° | 27° Mbabane: 15° | 29° Maseru: 10° | 25° Antananarivo: 12° | 23° Lilongwe: 17° | 28° Maputo: 18° | 31° Windhoek: 12° | 27° Cape Town: 14° | 17° Durban: 18° | 30° Johannesburg: 16° | 25° Dar es Salaam: 22° | 29° Lusaka: 16° | 29° Harare: 13° | 29° Economic Indicators: Currency: GBP to NAD 23.17 | EUR to NAD 19.9 | CNY to NAD 2.54 | USD to NAD 18.5 | DZD to NAD 0.14 | AOA to NAD 0.02 | BWP to NAD 1.31 | EGP to NAD 0.38 | KES to NAD 0.14 | NGN to NAD 0.01 | ZMW to NAD 0.67 | ZWL to NAD 0.04 | BRL to NAD 3.64 | RUB to NAD 0.2 | INR to NAD 0.22 | USD to DZD 133.95 | USD to AOA 834.06 | USD to BWP 13.64 | USD to EGP 47.9 | USD to KES 133.98 | USD to NGN 1379 | USD to ZAR 18.5 | USD to ZMW 27.1 | USD to ZWL 321 | Stock Exchange: JSE All Share Index 76428.31 Up +0.50% | Namibian Stock Exchange (NSX) Overall Index 1700.24 Up +0.45% | Casablanca Stock Exchange (CSE) MASI 13403.47 Up +0.61% | Egyptian Exchange (EGX) 30 Index 26113.71 Up +6.81% | Botswana Stock Exchange (BSE) DCI Same 0 | NSX: MTC 7.75 SAME | Anirep 8.99 SAME | Capricorn Investment group 17.34 SAME | FirstRand Namibia Ltd 49 DOWN 0.50% | Letshego Holdings (Namibia) Ltd 4.1 UP 2.50% | Namibia Asset Management Ltd 0.7 SAME | Namibia Breweries Ltd 31.49 UP 0.03% | Nictus Holdings - Nam 2.22 SAME | Oryx Properties Ltd 12.1 UP 1.70% | Paratus Namibia Holdings 11.99 SAME | SBN Holdings 8.45 SAME | Trustco Group Holdings Ltd 0.48 SAME | B2Gold Corporation 47.34 DOWN 1.50% | Local Index closed 677.62 UP 0.12% | Overall Index closed 1534.6 DOWN 0.05% | Osino Resources Corp 19.47 DOWN 2.41% | Commodities: Gold US$ 2 301.81/OZ DOWN -0.0011 | Copper US$ 4.53/lb UP +1.46% | Zinc US$ 2 924.30/T DOWN -0.08% | Brent Crude Oil US$ 83.49/BBP DOWN -0.0105 | Platinum US$ 955.87/OZ UP +0.28%