South Africa

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INES-event
INES 2

Transport of package containing a radioactive source from Kenya to South Africa

A parcel containing an industrial radiography sealed source was transported from Kenya to South Africa. The package was labelled as empty (UN2908) and was handled as a general luggage during transportation in a South African Airways passenger flight. On arrival at the final destination the dose rate on the outside surface of the package was measured by the consignee to be 6mSv per hour. The measured dose rate on the surface of the package could potentially result in the low to moderate health risk to people who were in contact with the package.

Category: Transportation Kenya South Africa »

INES-event
INES 2

Both low head safety injection motors declared inoperable because of insufficient motor cooling water flow

The event involved the unavailability of both low head safety injection (LHSI) motors for an extended period for certain accident scenarios that went undetected by all the present processes currently in use for surveillance, maintenance and testing.
On 2005-12-05 both LHSI motors were declared inoperable because of reduced motor cooling water flow. An Operating Technical Specification Limiting Condition of Operation required the unit to be taken from a plant state of Intermediate Shutdown Residual Heat Removal system conditioned to Cold Shutdown within 24 hours.

Category: Power Reactor South Africa »

INES-event
INES 1

Loss of 185 MBq of I-131 in type A packaging

A consignment of 185 MBq of I-131 in Type A packaging, produced by the South African Atomic Energy Corporation, was delivered to Johannesburg International Airport on 10 September 1999, for transportation to Cape Town. The package was not delivered by 13 September, and has not been able to be located to date.
Justification of the Rating:
Since the lost source does not have the potential to cause prompt adverse health effects, its loss is rated at Level 1, the minimum prescribed by Section C3.3 of the addendum to the INES User's Manual, which replaces Section IV-5.1.2.

Category: Transportation South Africa »

INES-event
INES 2

Loss of 7 TBq of Mo-99 in B(U) packaging

A routine consignment of 7 Tbq of Mo-99 in Type B(U) packaging, produced by the South African Atomic Energy Corporation, was delivered to Johannesburg International Airport on 2 March 1999, for transportation to Israel. The package could not be found by the carrier later on the same day. The carrier has instituted a worldwide search, and the local police service has been informed.
Justification of the rating:

Category: Transportation South Africa »

INES-event
INES 2

Loss of 4 TBq of Mo-99 in B(U) Packaging

A routine consignment of 4 TBq of Mo-99 in Type B(U) packaging, produced by the South African Atomic Energy Corporation was delivered to Johannesburg International Airport on 22 April 1998, for transportation to Buenos Aires. The package could not be found during the carrier's warehouse check on 23 April. The matter was reported to the local police service, and a "trace" process was instituted on flights which might have carried the consignment erroneously.

Category: Transportation South Africa »

INES-event
INES 2

Loss of 4 TBq of Mo-99 in B(U) packaging

A routine consignment of 4TBq of Mo-99 in Type B(U) packaging, produced by the South African Atomic Energy Corporation was delivered to Johannesburg International airport on 22 April 1998, for transportation to Buenos Aires. The package could not be found during the carrier's warehouse check on 23 April. The matter was reported to the local police service, and a "trace" process was instituted on flights which might have carried the consignment erroneously.

Category: Transportation South Africa »

INES-event
INES 2

Workers receive dose exceeding statutory annual dose limit

During a routine filter change, in the refuelling water storage and cooling system, three workers received whole body radiation doses of 50, 90 and 105 milli-Sieverts. The statutory annual whole body dose limit is 50 milli-Sieverts.

Category: Power Reactor South Africa »

INES-event
INES 2

Uncontrolled entry into room under reactor vessel during refuelling outage

During the scheduled refuelling outage on unit 2, a worker received an external whole body dose of 32 milli-Sieverts (3.2 rem) during entry into a normally locked room inside the reactor containment building. The worker had a key to another room nearby, but mistakenly opened the wrong door. On entering the room he realised his mistake and exited.
The use of the key, and entry into the room were not performed according to existing authorised procedures.
The whole body dose received by the worker was within the annual legal limit of 50 milli-Sieverts (5 rem) for a radiation worker.

Category: Power Reactor South Africa »