
[ BRIEF HISTORY I CONSTRUCTION I RESIDENTIAL PROPERTY I
POWER STATION MANAGERS I AWARDS & ACHIEVEMENTS I SABOTAGE I MOTHBALLING
& DE-MOTHBALLING I TECHNICAL DATA I DOG CENTRE I SECURITY
TRAINING CENTRE ]
BRIEF HISTORY
| Arnot power station was the
first modern six unit coal fired power station commissioned by Escom. The power station is
situated, some 50 km south of Middleburg on the Mpumalanga Highveld. The vast flats
surrounding the station are often graced with an abundance of cosmos flowers. Another
former inhabitant of these flats, was the white rhino, which was honoured as the central
symbol of the stations official logo. The majestic animals reputed
characteristic of no retreat is suitably matched by the determination and industry shown
by Arnots employees. Qualities which have earned them outstanding acknowledgement
for performance Arnot boasts six units, each with a
capacity of 350 MW, and an installed capacity of 2100 MW. Arnot was also the first to be
commissioned with a reheat system and electronic automatic controls.
PLEASE CLICK
ON PHOTOGRAPH TO VIEW ENLARGED VERSION

Arnot Power Station under construction |
Dr R L Straszacker was the Chairman of Eskom when it was
decided to build Arnot. Eskom then bought the farm Rietkuil from its owners.
The seven original owners were: Mr Oosthuizen, Mr Venter, Mr Visser, Mr Brough, Mr
Henning, Mr Streicher and Mr Greef. The Project was financed with approval of
Capital Expenditure Management, and the Eskom Design and Construction Department was
responsible for the design. Sufficient water and, especially, coal in the RietKuil
area ensured the construction of Arnot power station in that particular location.
CONSTRUCTION
Construction commenced in 1968. The excavations of the foundations were
about 60/70 feet deep. The last of six units was commissioned in 1975. Unit 3
was the first to go on load (9 May 1971 at 23:00). The next units came into
commercial operation respectively: unit 2 - 10 September 1971, unit 1 - 21 July 1972, unit
4 - 19 July 1974, unit 5 - 10 July 1974 and unit 6 - 25 June 1975, at 21:45.
The construction of Arnot had a great
influence on the lives of the community. Previously there were no medical or business
facilities nearby. The nearest facilities were 40 km away from Rietkuil at a town called
Belfast.
With the construction of the station this situation,
however, changed. A doctor visited the community twice a week, and a minister from Belfast
cared for the religious needs on a Sunday. In the beginning, caravans were the only
housing facilities available and the nearest shop/café, named "KOM EN KRY" was
about 3 km away.
RESIDENTIAL
PROPERTY
In 2000 the Rietkuil shopping centre
offered a supermarket, butchery, bakery, pharmacy, hairdressing and banking facilities.
Several churches were active in the community, and a doctors consulting room. A
library took care of the need for reading matter, and at Rietkuil Country Club one could
spend a pleasant evening out. Rietkuil Primary School was a dual medium school (meaning
that instruction was given in English and Afrikaans languages). A daily bus service
provided transport to high schools in nearby towns such as Hendrina and Middleburg.
POWER
STATION MANAGERS
The first Power Station Superintendent
at Arnot was Mr John Spears, Mr Ross Hatton succeeded him. Mr John Henderson succeeded Mr
Hatton. Then came Mr Roger Matthews, Mr Gert Strydom, Mr Venna Venter (Acting as Power
Station Manager), Mr Dries Struwig, Mr Peter O Connor and in 2000 Mr Carl Haupt was
managing the station.
AWARDS
ACHIEVEMENTS
During its years of operation, Arnot re-wrote the record books a number of times:
Arnot was a winning station in terms of
plant performance and was awarded the Jan H Smith trophy in 1987 and again in 1989.
In July 1991 Arnot also celebrated an
outstanding performance. The station broke the world record of 32 days by running six
units continuously for 35 days 14hours and 29 minutes. (an achievement at the time).
The Arnot AmaZulu Dancers won the Eskom
Tribal Dance Competition in June 1988 for the second year consecutively, and left on a
tour to Germany on 14 September 1988.
On the safety front, Arnot achieved three
million man-hours without any disabling injury in 1986, 1990 and 1996 and four million
man-hours in 1997.
Achievement of the Affirmative Action
target of 50.82% at the end of 1999.
At the end of 1999 Arnot also boasted the
lowest sick leave average of all Eskom power stations in the Generation Group.
SABOTAGE
In July 1981 intruders sabotaged the
transformers at Arnot. They cut a hole in the security fence (a 7 feet wire netting) and
blew up two of the transformers beyond repair. Professionals from the South African Police
(Middleburg) investigated the site the next morning and disarmed another three limpet
mines. No human fatality was recorded. After this incident, the fencing of all Eskom power
stations was electrified.
MOTHBALLING AND DE-MOTHBALLING
Another traumatic event in the life of
Arnot and its employees was when the announcement was made to "mothball" the
station, i.e. to decommission the units but to maintain them in such a condition that they
could be re-commissioned if necessary. Due to an unforeseen downturn in the South African
economy and consequent negative growth in the electricity demand, the decision was taken
during 1992 to mothball Units 4,5, and 6.
The mothballing decision had a demoralising
effect, not only on the Arnot employees, but also on the neighbouring community. When
Arnot was mothballed it was also a first for Eskom. A lot of time was spent to ensure that
the units were correctly stored and that water and steam touched systems were kept dry.
Oil and electrical systems were drained, cleaned and treated with corrosion inhibitors.
All critical items on the plant were covered with plastic and regular inspections of plant
condition were carried out.
The manpower numbers dropped dramatically
from 1 494 employees in December 1991 (prior to mothballing) to only 937 employees at the
end of 1992 (after mothballing). The restructuring process in Eskom (during 1992) also
contributed to these manpower figures dropping.
The de-mothballing and re-commissioning of
the units, announced in 1994, was a new experience for Eskom and the first operation of
its kind in the Southern Hemisphere.
The re-commissioned units had bagfilters
installed, which compare to huge vacuum cleaners, to remove the maximum amount of ash
particles from exhaust gas. The units also came back with new control and instrumentation
and are fully equipped to satisfy the demand for electricity.
As the quote says "Every dark cloud has a silver
lining", and Arnots sun shines again with the break of the new millennium.
Arnot is the first power station to be re-commissioned after mothballing and became a
"six pack" station again. Unit 4 came back on load on 28 January 1997, followed
by Unit 5 on 22 November 1997 and unit 6 on 30 December 1998.
TECHNICAL DATA
GENERAL INFORMATIION
| Total station generating capacity (6 sets) |
2100 MW |
| Total boiler capacity (6 boilers) |
333 kg/s |
| Total circulating water capacity (8 pumps) |
9 200 m3/sec |
| Station efficiency |
33% |
| Date work commenced |
May 1971 |
| Date final unit was commissioned |
June 1975 |
| Max. total coal consumption tons/day |
25 000 tons |
| Water consumption Ml/day |
95 760 Ml |
| TURBINE HOUSE |
| Turbines |
Reaction-Impulse |
| Generators |
350 MW rating |
| Manufacturer of turbo-generators |
Brown Boveri CEM |
| Steam conditions at turbine stop valve |
333 kg/s, 160 bar, 510oC |
| Vacuum |
75 kPa |
| Speed of generators |
3000 r.p.m. |
| Generator cooling |
Stator: Demineralised water
Rotor: Hydrogen gas |
| Generator Voltage |
15 kV |
| Circulating water flow |
9.3 m3/s |
| Number of turbine house cranes |
2 * (Main=150 T, Aux.=25T) |
| Dimensions of turbine house |
Width: 31 m, Length: 364 m |
| BOILER HOUSE |
|
| Boilers (6) |
Pulverised Fuel-Drum Type |
| Continuous rating |
333 kg/s |
| Boiler manufacturer |
I.C.A.L. |
| Outlet pressure |
167 bar |
| Outlet temperature |
516oC |
| Coal consumption at full load |
4 167 tons/boiler/day |
| Combustion Control |
Boiler Fuel Master |
| Dimensions of boiler house |
Width: 96 m, Length: 364 m |
| Number of Chimneys |
2 |
| Height of Chimneys |
193 m |
| COAL PLANT |
|
| Coal sources |
Arnot AMCOAL |
| Number of station coal staiths |
6 |
| Capacity of 6 staiths |
188 762 M.T. |
| COOLING TOWER |
|
| Cooling tower type |
Natural draught |
| Number of towers |
6 |
| Capacity |
9 200, cu. m/sec |
| Diameter of top |
North 60.60, South 51.92 m |
| Diameter of throat |
North 54.25, South 48 m |
| Diameter of sill |
North 85.65, South 76.4 m |
| Temperature drop |
15oC |
| WATER |
|
| Main source |
Vygeboon Dam
Nooitgedacht Dam |
| Dam capacity |
Nooitgedacht Dam 79 350 Ml
Vygeboom 78 680 Ml |
| Pipelines - to Arnot |
Wintershoek to Arnot |
| Main pipeline capacity |
4.2 m3/s |
| Station consumption |
95 Ml/day |
Bibliograpy
Eskom News
Megawatt Magazines
Electricity Supply Commission Annual Reports
Newspaper Cuttings Eskom Archives
Interviews
Betsie Goussard - Arnot Power Station
C Haupt - Power Station Manager Arnot
og
centre

[BRIEF HISTORY I THE AIM I COMPETITIONS
& AWARDS I CLOSURE]
BRIEF
HISTORY
The Centre was originally opened in 1974 as part of the Protective Services
Security Training Centre. This was also the year that the first patrol dogs were trained.
In 1982, studies indicated that Eskom would need about 2 000 dogs for security purposes
but the Centre was not equipped to handle such a large number of dogs. Roodeplaat Breeding
Enterprises in Pretoria then began to train handlers and dogs.
Unfortunately the quality of the training and the dogs did not meet Eskom standards. The
Centre at Arnot was reopened in 1988. Seven bitches were imported from Germany in 1992 to
improve the breeding stock, and since then rosettes and awards flooded the walls of the
Centre.
THE AIM
The aim was not only to provide a service to
Eskom but also to provide trained dogs for outside companies. Dogs were trained as patrol
dogs and, later, in locating stolen copper cable.

A dog undergoing training

The Chairman and Chief Executive of Eskom with Government Officials visiting the Dog Cetre
COMPETITIONS
AND AWARDS
The dog centre walked off with excellent
prizes in the National Show 94 of the German Shepherd Federation. This was the single
largest German Shepherd Show until that time in South Africa, with 250 competitors.
Lenhard Schweikert, one of the top breeders in Germany and a well-known international
judge, judged the show. All the dogs were judged according to their build, work ability
and presence.

A dog training to jump through a hoop. Once the dog is trained to jump through an ordinary
hoop it will be trained to jump through a fire hoop
|
To enable a dog to obtain the VA grading (the hightest
possible grading which was only awarded once a year) the animals must have a working
title, undergo a major attack on the day of the show, not be afraid of attackers and be
able to run for about seven kilometres. The V grading was given to animals that showed
great promise for the future. The Eskom Dog Centre had been acknowledged as one of the
best kennels in South Africa with such high quality dogs. They boasted a total of four VA
graded bitches. They won international honours.

The Eskom Team taking part in the SAWDIS Competition
A dog performing a long jump over obstacles in the SAWDIS competition
|
Eskom also took part in the South African Working Dogs
Invitation Stakes (SAWDIS) competition annually. In the 1990 SAWDIS competition the Eskom
Team won the event with a score of 95 out of a possible 100. Fourteen teams participated
including the South Africa Police (SAP), South African National Defence Force (SANDF),
Johannesburg Consolidated Investments (JCI), Gold Fields, Bophutatswana Police (BOP), BOP
Prisons, South African Air Force (SAAF), Johannesburg City Council, Rand Water Board, SCAW
Metals, Anglo American Gold Division, African Explosive and Chemical Industries (AECI SA)
and Civilians. All of these were crack teams. The SAWDIS competition grew in stature from
its start as a team event for action dogs in 1976 with teams from the SA Army, SA Police,
SA Prisons Service and the Civilians. It was specially devised to test the dogs and
handlers for the ability and efficiency of the dog and the training capability of the
handler.

Eskom were worthy of winners of this prestigious event many times and carried off the
SAWDIS Trophy, which they themselves donated
A German Shepherd bred at the Dog Centre
|
CLOSURE

Ingrid Rosendahl, head of the Animal Utilisation Group with two German Shepherds that
were imported from GermanyOverseas
breeders were starting to look at South Africa for dogs due to the favourable exchange
rates. Unfortunately, the plan to run the Centre as a business, providing a service to
outside companies never really got off the ground,. The centre became too expensive to
maintain and was no longer an economically viable proposition. Approximately 14 animals
were kept for replacement purposes for the operational dogs used by Protective Services.
Calls then came flooding in from the public to purchase these dogs. After all, the dogs
were from German stock and could fetch prices of up to R25 000 per bitch. This did not
mean that Eskom would no longer use dogs for security purposes.
In 1995 tails stopped wagging for the last
time when the Dog Centre closed down after 21 years of breeding and training some of the
top security dogs in the country. |
Bibliography
Eskom News
Megawatt Magazines
Interviews
Kobus Olivier Eskom Protective Services
THE HISTORY OF
THE SECURITY TRAINING CENTRE AT ARNOT POWER STATION

[ The Aim I The Security Function I National
Keypoint I Closure
]
THE AIM
The aim of security training in Eskom was
to create a security force able to protect, as far as possible, a national asset, namely
Eskoms plant, buildings and staff, from theft, violence and sabotage.
THE
SECURITY FUNCTION IN ESKOM
The security function started in Eskom in 1968, and in the
same year the first security personnel were employed at Arnot, Hendrina, Camden and
Ingagane power stations.

Aerial view of the Security Training Centre at Arnot Power StationTraining played an important role in
establishing the security force as an effective part of Eskom. In 1974 the Security
Training Centre opened at Arnot power station. The training at Arnot compared extremely
well with training in other organisations, with the result that not only Eskom security
guards were trained there but also security personnel from outside Eskom.
The effectiveness of the weapons training was
evident from the results of various national shooting competitions. |
Following various developments in Southern Africa, security
of assets took on a greater importance. This was particularly so in the case of the
electrical generation and supply industry which is really the lifeblood of a nation. It
was Dr Ian McRae (now retired Chief Executive) who, in 1975, arranged for a two-day
Security Awareness session, to be attended by power station superintendents and other
senior officials. The session was held at Arnot and hosted by the Education Department. It
comprised lectures on security and the passing out parade of the second large group of
black security guards. The passing out parade of security personnel was the culmination of
a gruelling three-month course which included drill, physical training, law, criminal
procedure, human relations, Eskom security, accident prevention, fire-fighting and
dog-handling.
The programme
ended with a display of dog handling by guards trained by dog handlers. With amazing
obedience these dogs captivated the audience. Despite the distraction of abnormal steam
blasts from the power station, which made it difficult for them to hear the instructions,
the dogs demonstrated their ability at drill, scenting, physical training, crowd control
and even clowning.
The parade programme comprised the march-on of
the trainees, the arrival of guests of honour, the prize giving at which the trophies for
the best students were presented, a march past led by the drill instructor and a PT
display with all the exercises done in time to singing.

Guards marching onto the parade ground
|

Physical Training Display
Guards on the Parade ground
|
With the first incident of sabotage in 1981 the focus
changed again and even more importance was attached to the security department.
NATIONAL KEYPOINT
As a result of the introduction of the
National Keypoint Act (Act 102 of 1980) the Security Training Centre at Arnot, established
in 1974, was registered in 1983 as a National Keypoint training establishment.

Guards showing their skills with weapons
Security guards checking a vehicle at an Eskom site
|
Various courses had already been developed to suit
individual needs. All security personnel were trained within 12 months of their
appointment. The training was work orientated and based on the individuals level of
competence.

A guard receiving his trophy for the best studentNumerous security personnel joined Eskom from the Defence Force and
South Africa Police. They completed a training course in six weeks which concentrated on
the development of supervisory skills and leadership orientation. Entrants with no
experience were trained for eight weeks in basic skills.
All guards at National Keypoints carried
weapons and radios. |
The National Keypoints Act laid down standards for courses.
Students had to obtain 60 percent in written examinations to qualify. Internal Eskom
examinations in weapons handling (70%) and legal subjects related to the use of firearms
were also held. The passmark in these was 100 percent.

Security guard on patrol with a dog
A guard demonstrating manwork skills with his dog
|
Various courses were developed to
concentrate on the continuous development of skills and to determine training needs.
Officials who had completed the initial
supervisors course could decide in which of the three fields of intelligence,
operations or training, they wished to advance.
During a period of one year 1080 officials
were trained at Arnot (consisting of three Companies and twelve Platoons of thirty
students) then the numbers were gradually reduced to 530.
CLOSURE
During 1992 the training centre moved from
Arnot power station to Wilge power station where the operation was finally closed down in
October 1999. Each Eskom site is now responsible for its own security training.
Bibliography
EskomNews
Megawatt Magazines
Interviews
Kobus Olivier - Eskom Protective Services
[ BRIEF HISTORY I CONSTRUCTION I RESIDENTIAL
PROPERTY I POWER STATION MANAGERS I AWARDS & ACHIEVEMENTS I SABOTAGE I MOTHBALLING
& DE-MOTHBALLING I TECHNICAL DATA I DOG CENTRE I SECURITY
TRAINING CENTRE ]
|