CERTIFICATE OF ACCREDITATION
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1 CERTIFICATE OF ACCREDITATION In terms of section 22(2)(b) of the Accreditation for Conformity Assessment, Calibration and Good Laboratory Practice Act, 2006 (Act 19 of 2006), read with sections 23(1), (2) and (3) of the said Act, I hereby certify that:- SABS COMMERCIAL SOC LTD NETFA Co. Reg. No.: 2000/013581/07 OLIFANSTFONTEIN Facility Accreditation Number: T0159 is a South African National Accreditation System accredited Testing laboratory provided that all SANAS conditions and requirements are complied with This certificate is valid as per the scope as stated in the accompanying schedule of accreditation, Annexure A, bearing the above accreditation number for ELECTRICAL PERFORMANCE TESTING The facility is accredited in accordance with the recognised International Standard ISO/IEC 17025:2005 The accreditation demonstrates technical competency for a defined scope and the operation of a laboratory quality management system While this certificate remains valid, the Accredited Facility named above is authorised to use the relevant SANAS accreditation symbol to issue facility reports and/or certificates Mr R Josias Chief Executive Officer Effective Date: 30 November 2013 Certificate Expires: 29 November 2018
2 ANNEXURE A S C H E D U LE O F A C C R E D I T A T I O N Testing Laboratory Number: T0159 Permanent Address of Laboratory: SABS Commercial SOC Ltd NETFA 43 rd Street Olifanstfontein S; E Postal Address: PO Box 144 Olifantsfontein 1665 Onsite SABS Lower Germiston Road Rosherville Johannesburg Technical Signatories: Mr JP Fourie (HV) Mr JL Monyai (MIL) Mr BD Taylor (HV & ML) Mr LAJ van den Heever (ML) Mr SS Mnisi () Mr FT Mkansi (HV) Mr LV Marumole (HV) Mr RI Ngobeni (MIL) Ms NK Ntseke () Mr MG Nkwashu (Methods marked #only) Mr ES Phewa (Methods marked * only) Mr V Mashiane (SABS 156,SABS 1524,VC 8036,SANS ,SANS ) Ms A Munhutu (SANS 156, 556-1, 767-1, & 2, ,2,11, ,3, SANS/IEC ,102,200,103,100) Ms M Chokoe ( SANS/IEC , ,200,202,103,100,102; SANS/IEC , , , , SANS 780, 60439,2) Management Signatory: Mr I Djurdjevic Tel: Fax: (011) (Lab) (011) kgaugelo.rabodiba@sabs.co.za Nominated Representative: Key: Mr J Marema HV: High Voltage Laboratory, : Short Circuit Laboratory, IL: Installations Laboratory, MIL: Materials Laboratory Tel: Fax: (012) (Mr J Marema) (012) johnson.marema@sabs.co.za Issue No.: Date of issue: Expiry date: October November 2018 Equipment/Techniques Used IL Plugs, socket-outlets and Markings on accessories VC8008:2010* socket outlet Checking of dimensions adaptors Protection against electric shock SANS :2013* Provision for earthing Terminals and terminations SANS 164-0:2016* SANS 164-1:2016* Construction of fixed socket-outlets Interlocked socket outlets SANS 164-2:2012* SANS 164-3:2013* Resistance to ageing, protection provided by enclosures and resistance to humidity Insulation resistance and electric strength Operation on earthing contacts Temperature rise Breaking capacity SANS 164-4:2013* SANS 164-5:2007* SANS 164-6:2010* SANS :2005* SANS :1995* Original date of accreditation: 01 September 2002 Page 1 of 14
3 ANNEXURE A IL Plugs, socket-outlets and Normal operation socket-outlet adaptors Force necessary to withdraw the plug Flexible cable and their connection Mechanical strength Resistance to heat Screws, current-carrying parts and connections Creepage distances, clearances and distances through sealing compound Resistance tests of insulating material to abnormal heat, fire and tracking Resistance to rusting Additional tests on pins provided with insulation sleeves IL Appliances couplers Markings on accessories VC 8012:2010 Checking of dimensions and compatibility SANS :2008 Protection against electric shock test Provision for earthing on couplers Terminals and terminations Construction of appliance couplers Moisture resistance test on couplers Insulation resistance and electric strength test Forces necessary to insert and withdraw the connector Operation on contacts Resistance to heating of different types of couplers Breaking capacity test Normal operation test Temperature rise test Cords and connections must comply with IEC 227/IEC 245:2006 IEC 227 or IEC 245 Mechanical strength test Resistance to heat and ageing test Screws, current-carrying parts and connections Creepage distance test on insulation of connectors and inlets as well as clearances and distances Materials test to fire, heat and tracking Rusting test and ferrous parts IL Ready boards Cord sets and All test included in SANS 1619 SANS 1619:2011 cord extension sets All tests included in SANS , SANS , SANS to SANS and SANS 1574 SANS SANS SANS SANS SANS 1661:2012* VC 8029:2012* SANS :2013 SANS :2008* SANS 164-0:2012 to SANS 164-6:2010 SANS 164-0:2016 SANS 1574:2004# SANS :2006*# SANS 60799:2007* SANS :2013* SANS :2007 Original date of accreditation: 01 September 2002 Page 2 of 14
4 ANNEXURE A IL Wall boxes Markings Dimensions Protection against electric shock Provision for earthing Construction Resistance to ageing, protection against ingress of solid objects and harmful ingress of water Insulation resistance and electric strength Mechanical strength Resistance to heat Creepage distance, clearance and distance through sealing compounds Resistance to insulation material to abnormal heat and fire Resistance to tracking Resistance to corrosion SANS 1085:2014 SANS :2012 IL Switches for appliances Markings VC8052:2010 Cord switches independently Protection against electric shock SANS :2009 I mounted switches Provision for earthing SANS :2011 Terminals and terminations SANS :2004 Construction Testing of mechanism Insulation resistance and dielectric strength Test of material to heating Endurance switch test Mechanical strength test Resistance to heat, fire and tracking test Resistance to rusting test IL Switches for household and Markings VC 8003:1998* Similar fixed electrical Protection against electric shock SANS :2007* installations Cord anchorage test Mechanical strength test Protection against dust, water and against humid conditions Insulation resistance and dielectric strength Endurance test Mechanical strength test Resistance to heat, fire and tracking test Resistance to rusting test Endurance test Resistance to heat, fire and tracking Ratings; Classification; Markings; Dimensions Protection against electric shock; Provision for earthing; Terminals; Constructional requirements IL Adaptors Mechanisms; Resistance to aging etc. Insulation and resistance and electric strength; Temp rise; Making and breaking capacity; Normal operation; Mechanical strength Resistance to heat; Screws, current caring parts and connection; Creepage and VC8008:2010 SANS :1995 SANS 164-1:2012 SANS 164-2:2012 SANS 164-3:2013 SANS 164-4:2013 SANS 164-5:2007 SANS 164-6:2010 Original date of accreditation: 01 September 2002 Page 3 of 14
5 ANNEXURE A IL Adaptors Mechanisms; Resistance to aging etc. Insulation and resistance and electric strength; Temp rise; Making and breaking capacity; Normal operation; Mechanical strength Resistance to heat; Screws, current caring parts and connection; Creepage and Clearances and distance through sealing compound; Resistance of insulating material to abnormal heat, to fire and to tracking; Resistance to rusting VC8008:2010 SANS :1995 SANS 164-1:2012 SANS 164-2:2012 SANS 164-3:2013 SANS 164-4:2013 SANS 164-5:2007 SANS 164-6:2010 IL Terminal blocks SANS SANS :2008 IL Light dimmers Markings on accessories SANS 1012:2006 Insulation resistance test High voltage test Endurance test Abnormal operations Operation of a switch Corrosion resistance Combustion test on material Resistance to heat test Absorption resistance of insulation materials Temperature rise test Light output test Circuit breakers and switch disconnectors Tripping limits and characteristics Dielectric properties Mechanical operations and operational performance capability Overload performance Verification of dielectric withstand Verification of temperature rise Verification of overload releases Verification of under voltage and shunt releases (if applicable) Rated service short-circuit breaking capacity Rated ultimate short-circuit breaking capacity Rated short-time withstand current Short-circuit breaking capacity at maximum short-time withstand current Short-circuit at the selectivity limit current Short-circuit at 1,1 times take-over current Short-circuit at ultimate short-circuit breaking capacity Resistance to mechanical shock on impact Rated service short-circuit breaking capacity Vibration Endurance Breaking capacity Mechanical strength Water absorption Combustion Test for stick-on labels Marking 28-day test SANS :2014 IEC :2013 SANS :2012 IEC :2012 SANS 156: 2007 VC8036:2006 SANS 556-1: 2012 AS 3111: 2009 AS 2184:1985 IEC 60898: 2003 Original date of accreditation: 01 September 2002 Page 4 of 14
6 ANNUXURE A Date of issue: 20 October 216 Circuit breakers and switch disconnectors Short-circuit performance at 1500 A Short-circuit capacity Performance at rated short-circuit capacity Performance at reduced short-circuits Mechanism Indelibility of marking Clearances and creepage distances (external parts only) Non-interchangeability Reliability of screws, current-carrying parts and connections Reliability of screw-type terminals for external conductors Protection against electric shock Clearances and creepage distances (internal parts only) Resistance to heat Resistance to abnormal heat and to fire Resistance to rusting Making and breaking capacities (1) Leakage current (2) Strength of actuator mechanism (2) Short-circuit making capacity Fuse protected short-circuit withstand Fuse protected short-circuit making SANS :2014 IEC :2013 SANS :2012 IEC :2012 SANS 156: 2007 VC8036: 2006 SANS 556-1:2012 AS/NZS 3111:2009 AS2184: 1985 IEC 60898: 2003 Portable earthing Gear and line fitting Earth leakage relays Short circuit current test Indelibility of marking Reliability of connections Protection against electric shock Dielectric properties Temperature rise Operating characteristic Mechanical and electrical endurance Behaviour of RCCB s under short-circuit conditions SANS 61230:2009 IEC 61230:2008 SANS/IEC 61284: 1997 SANS 767-1: 1982 SANS 767-2: 1983 VC8035: 1987 AS3190: 1994 Earth leakage relays Resistance to shock and impact Resistance to heat Trip free mechanism Operation at limits of rated voltage Behaviour of RCCB s in case of failure of line voltage SANS 767-1: 1982 SANS 767-2: 1983 VC8035: 1987 AS3190: 1994 High Voltage AC circuit breakers Measurement of circuit resistance Temperature rise tests Short time peak withstand current Basic short circuit duties Critical current tests Single phase short circuit tests SANS :2013 IEC :2012 IEC :2011 Original date of accreditation: 01 September 2002 Page 5 of 14
7 ANNUXURE A AC Metal enclosed switchgear Measurement of circuit resistance Temperature rise tests Short time and peak withstand current Verification of making and breaking capacity, circuit breakers and switches Verification of protection Arcing due to internal fault SANS :2012 IEC :2011 IEC : 2011 SANS :2014 IEC : 2014 SANS 1029: 2010 NRS 004:2010 Low voltage switch gear Resistance against unwanted tripping Temperature rise limits Dielectric properties Short-circuit withstand strength Effectiveness of protective circuit Clearances and creepage distances Mechanical operation Degree of protection Wiring, electrical operation Protective measures Insulation resistance Arcing due to internal fault SANS :2004 IEC :2004 SANS :2006 IEC :2005 SANS :2007 IEC :2001 SANS :2005 IEC :2004 SANS :2006 IEC :2006 SANS :2012 IEC :2011 SANS :2012 IEC :2011 SANS :2013 IEC :2012 SANS :2014 IEC :2012 SANS :2012 IEC :2012 SANS :2007 SANS :2008 SANS :2008 SANS 61641:2008 IEC/TR 61641:2008 SANS 60890:2007 IEC 60890:1987 SANS :2013 IEC :2012 SANS : 2012 SANS : 2014 AC Disconnectors and earthing switches Temperature rise Measurement of resistance of main circuit Short time and peak withstand current Short circuit making performance SANS :2013 IEC : 2013 SANS :2012 IEC : 2011 IEC : 2011 HV AC switch-fuse combinations Measurement of circuit resistance Temperature rise SANS :2013 IEC : 2012 IEC :2011 HV switches Measurement of circuit resistance Temperature rise Short time and peak withstand current Making and breaking tests SANS :2012 IEC : 2011 IEC : 2011 Original date of accreditation: 01 September 2002 Page 6 of 14
8 ANNEXURE A HV switches Measurement of circuit resistance Temperature rise Short time and peak withstand current Making and breaking tests SANS :2012 IEC : 2011 IEC : 2011 Reactors Ability to withstand short circuit IEC 60289: 1988 Cable joints and terminators Thermal short circuit Mechanical short circuit protection IEC : 1981 SANS :2013 IEC :2010 NRS 053: 2008 HD 629: 2002 BS 6910:1989 Insulators Temperature cycling tests SANS 60660:1999 IEC 60660: 1999 SANS 61109:2008 IEC 61109: 2008 Dry type power transformers: power transformers; distribution transformers Short-circuit test Temperature-rise test IEC 60726: 1982 SANS :2011 IEC :2011 SANS :2011 IEC :2011 SANS :2006 IEC :2006 SANS :2008 IEC :2007 SANS :2001 IEC :2001 SANS :2005 IEC :2004 SANS 780: 2009 High Voltage AC contactors and contactor-based motor starters Overload current withstand Short-circuit making and breaking test Verification of co-ordination with SCPDS SANS :2012 IEC : 2011 IEC : 2011 Expulsion fuses Breaking tests SANS :2008 IEC : 2008 Current-limiting fuses Breaking tests SANS :2010 IEC : 2009 Inductive voltage transformers Short-circuit withstand capability test IEC : 2003 SANS : 201 Bushings Verification of dimensions Temperature rise test Dynamic current withstand IEC 60137:2010 Original date of accreditation: 01 September 2002 Page 7 of 14
9 ANNEXURE A AC Metal enclosed switchgear Dielectric tests on auxiliary and control circuits Gas insulated switchgear Temperature rise test Measurement of resistance of the main circuit Short time peak withstand current tests Verification of making and breaking capacities Test under conditions of arcing due to an internal fault Dielectric tests on auxiliary and control Circuits Current transformers Short- time current tests Temperature rise test Verification of terminal markings HV Current transformers Voltage withstand test Lightning impulse test Partial discharge test HV AC Metal enclosed switchgear Power frequency voltage tests Lightning impulse test Partial discharge test Dielectric tests on auxiliary and control circuits HV Conductors Radio Interference Corona HV Inductive voltage transformers Lightning impulse test on primary winding Wet tests on outdoor transformers Verification of terminal markings Switching impulse test Partial discharge test Measurement of tan δ SANS :2012 IEC : 2011 IEC : 2011 SANS :2014 IEC : 2014 SANS 1029: 2010 NRS 004:2010 SANS :2012 IEC : 2011 IEC : 2011 IEC : 2012 IEC : 2007 IEC : 2012 AS 1675: 1986 IEC :2005 IEC :2013 IEC :2013 IEC : 2013 AS 1675 IEC :2012 IEC :2012 IEC :2014 SANS 1029:2010 IEC 61284:1997 CISPR 18-2 : 2010 IEC 61284:1997 IEC IEC :2013 IEC :2013 IEC :2013 HV AC Disconnectors and earthing Power frequency voltage tests IEC :2013 switches Lightning and switching impulse voltage IEC :2012 tests IEC :2012 Partial discharge CISPR 18-2: 2010 Dielectric tests on auxiliary and control circuits Radio interference voltage
10 Original date of accreditation: 01 September 2002 Page 8 of 14 ANNEXURE A Equipment/Techniques Used HV High Voltage AC circuit Power frequency voltage tests IEC :2013 breakers Lightning and switching impulse voltage IEC :2012 tests CISPR 18-2: 2010 Partial discharge Radio interference voltage HV HV AC switch-fuse Power frequency voltage tests IEC :2013 combinations Lightning and switching impulse voltage IEC :2012 tests Partial discharge Dielectric tests on auxiliary and control circuits HV HV switches Power frequency voltage tests IEC :2012 Lightning and switching impulse voltage IEC :2012 tests Partial discharge Dielectric tests on auxiliary and control circuits HV Electrical distribution Standard wet tests IEC :2011 equipment AC voltage tests up to 1200 kv IEC : 2010 Lightning impulse voltage tests up to 4 MV Switching impulse voltage tests up to 3 MV Impulse current tests 1/20 μs, 8/20 μs up to 40 ka Impulse current tests 8/20 μs up to 40 ka Phase to phase lightning and switching impulse tests Phase to phase power frequency tests Insulation co-ordination HV Cable joints and terminators Withstand voltage (AC) IEC :2005 Partial discharge test IEC :2013 Impulse voltage NRS 053:2008 Load cycling with voltage HD 623 S1: 1996 DC voltage test HD 629: 2006 Load cycling (no voltage) BS 6910: 1988 Load cycling (in water bath) Insulation resistance Voltage withstand in water bath Leak tightness Voltage withstand under wetting Voltage withstand under artificial rain HD 691 HV Insulators Impulse withstand and flashover SANS 177:2004 Wet and dry power-frequency withstand IEC : 2006 flashover IEC : 1996 Radio interference IEC 60383:1993 Verification of dimensions Puncture voltage withstand test IEC 60437:1997 CISPR 18-2: 2010 Partial discharge extinction voltage test IEC 60660:1999 Lightning impulse puncture test IEC 61109:2008 Steep-front impulse voltage test Wet switching impulse test Corona test Original date of accreditation: 01 September 2002 Page 9 of 14
11 ANNEXURE A Equipment/Techniques Used HV Surge arrestors Power-frequency voltage sparkover test IEC :2005 Front-of-wave voltage impulse sparkover Test Switching impulse sparkover voltage/time curve test Residual voltage test Current impulse withstand Operating-duty test Insulation withstand tests on arrestor housing Residual voltage test Long duration current impulse withstand test line discharge class 1 & 2 only SANS/IEC :2006 IEC :2011 HV Cables with extruded solid Power factor as a function of voltage IEC :2013 dielectric Power factor as a function of temperature IEC 60840:2006 Partial discharge test SANS 1339:2015 Bending test Heating cycle VC 8077:2003 Impulse voltage test High voltage withstand Capacitance HV Bushings Verification of dimensions Wet or dry lightning or switching impulse Tests Capacitance and tan δ Partial discharge HV Gas insulated switchgear Dielectric tests Radio interference voltage test Power-frequency voltage tests on main Circuit Dielectric tests on auxiliary and control Circuits Partial discharge measurement Voltage tests on the main circuit on site Lightning impulse test Switching impulse test IEC 60137:2010 SANS 1035 IEC :2012 IEC :2012 IEC :2012 CISPR 18-2: 2010 HV Paper cables Bending test Power factor/temperature test IEC :2005 IEC :1981 Impulse voltage test SANS 97:2012 Voltage withstand VC 8077:2003 Power factor HV Rubber cables Partial discharge test SANS :2008 HV Dry type power transformers: Lightning impulse test IEC :2004 HV Earth leakage relays Impulse voltage resistance of insulation SANS 767-1:1982 SANS 767-2:1983 VC8035;1987 AS3190: 1994 Original date of accreditation: 01 September 2002 Page 10 of 14
12 ANNEXURE A ML Cables with extruded solid dielectric Compliance with constructional requirements Dimensions Tensile test and elongation of insulation before ageing Tensile test and elongation of insulation after ageing (Air oven) Tensile test and elongation of sheath before ageing Tensile test and elongation of sheath after ageing (Air oven) Tensile test and elongation of sheath after immersion in oil Pressure at high temperature (Insulation) Pressure test at high temperature (Sheath) Bending at low temperature (Insulation) Heat shock (Insulation) Heat shock (Sheath) Hot set test Flame retardance Thermal stability Shrinkage Volume resistivity Insulation resistance constant Resistivity of semi-conducting layer Bending at low temperature (Sheath) Elongation at low temperature (Sheath Elongation at low temperature (Insulation) Loss of mass IEC :2004 IEC :1997 IEC :2013 IEC 60840:2006 SANS 1339:2015 SANS :2007 SANS :2015# SANS :2015# SANS :2014# SANS :2015# SANS :2015# VC 8077:2003 ML Cable joints and terminations Low voltage accessories BS EN 50393:2006 ML Paper cables Electrical resistance of conductors IEC :2005 IEC :1981 Dimensions SANS 97:2012 Bending test VC 8077:2003 Electric cables Single core arc welding cables SANS 1576:2008# ML PVC cables Electrical resistance of conductors Voltage withstand (Cores) Voltage withstand (Complete cable) 70ºC Compliance with constructional provisions Dimensions Tensile strength of insulation before ageing Tensile strength of insulation after ageing Loss of mass (Insulation) Tensile strength of sheath before ageing Tensile strength of sheath after ageing Loss of mass (Sheath) Bending at low temperature (Insulation) Bending at low temperature (Sheath) IEC :2006 IEC :2006 IEC :2006# SANS :2012 SANS :2012 SANS :2016 SANS :2012# BS 6004:2005
13 Elongation at low temperature Original date of accreditation: 01 September 2002 Page 11 of 14 ANNEXURE A ML Impact test at low temperature Heat shock test (Insulation) Heat shock test (Sheath) Flame retardance Test for non-contamination Pressure test at high temperature (Insulation) Pressure test at high temperature (Sheath) Flexing test Static flexibility test VC 8006:2010 VC 8075:2003 ML Dielectric sheet and plate Tensile properties ASTM D229: 2013 materials Dielectric strength Permittivity and dissipation factor Insulation resistance and resistivity Warp or twist ML Pressure sensitive materials Width ASTM D1000: 2010 Thickness SANS 122:2007 Length of tape in a roll Breaking strength and elongation Adhesion strength Unwind force Flagging Thermosetting properties Dielectric breakdown voltage Insulation resistance at high humidity Effect of accelerated ageing on dielectric breakdown voltage Flammability Bond strength after solvent immersion Oil resistance Puncture resistance ML Conductors Electrical resistance IEC 60228:2004 Compliance with constructional requirements Dimensions SANS 523:2009 SANS 1411:2008 SANS 1411:1-7:2008# SANS 182-1:2008 # SANS 182-2:2008# SANS 182-5:2008 VC8075 VC8006 Original date of accreditation: 01 September 2002 Page 12 of 14
14 ANNEXURE A ML Rubber cables Durability of colours and markings Dimensions SANS :2008 SANS :2008 SANS :2013 Solderability of untinned conductors SANS :2013# SANS :2013# Electrical resistance of conductors VC 8006:2010 Voltage test on completed cables Voltage test on cores Insulation resistance at elevated temperatures Flexing test Static flexibility test Tensile test and elongation of insulation before ageing Tensile test and elongation of insulation after ageing test (Air oven) Tensile test and elongation of sheath before ageing Tensile test and elongation of sheath after ageing test (Air oven) Tensile test and elongation of sheath after immersion in oil Hot set test (Insulation) Hot set test (Sheath) Pressure test at high temperature (Insulation) Bending at low temperature (Sheath) Elongation at low temperature (Sheath) Flame retardance Test for resistance to heat ML Aerial bundle cable All tests SANS :2009# SANS :2014# AS/NZS 3560 Part1:1991, excluding heat radiation test SANS :2016 ML Dielectric materials Dielectric breakdown voltage of solid ASTM D149:2013 electrical insulation BS 2050:1978 Dielectric strength of solid electrical ISO 284:2012 insulation NCB 245 AC loss characteristics of solid electrical insulation SANS 971:2013 Permittivity of solid electrical insulation DC resistance or conductance of insulating materials Volume resistivity and surface resistance Electrical resistance only IEC 60093:1980 SANS 1287:2007 Original date of accreditation: 01 September 2002 Page 13 of 14
15 ANNEXURE A ML Enamelled wire Dimensions SANS :2014 SANS :2014 Electrical resistance SANS :2014 SANS :2007 Springiness SANS :2010 SANS :2012 Mandrel winding test SANS :2012 SANS :2011 Stretching test SANS :2014 Jerk test Peel test Heat shock Cut-through Resistance to solvents Breakdown voltage Continuity of coverage (L.V. only) High temperature failure Packaging ML Winding wires Dimensions Electrical resistance Springiness Mandrel winding test Stretching test Jerk test Peel test Adherence test Solvent test Breakdown voltage Continuity of covering (L.V. only) Heat shock Cut-through test Packaging IEC :1996 IEC :2010 IEC :2014 IEC :2006 IEC :2012 IEC :2013 SANS :2014 SANS :2014 SANS :2014 SANS :2007 SANS :2010 SANS :2012 SANS :2012 SANS :2011 SANS :2014 HV (Onsite) Power transformers and distribution transformers Lightning impulse testing IEC :2014 SANS :2014 IEC :2004 SANS :2004 IEC :2006 SANS :2006 SANS 780:2009 Original date of accreditation: 01 September 2002 Page 14 of 14 ISSUED BY THE SOUTH AFRICAN NATIONAL ACCREDITATION SYSTEM
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