[iwar] [fc:Computer.glitch.behind.worst.blackout.in.decade]

From: Fred Cohen (fc@all.net)
Date: 2002-08-16 06:32:37


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Date: Fri, 16 Aug 2002 06:32:37 -0700 (PDT)
Subject: [iwar] [fc:Computer.glitch.behind.worst.blackout.in.decade]
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Computer glitch behind worst blackout in decade

By Krist Boo, The Straits Times, 8/15/2002
<a href="http://straitstimes.asia1.com.sg/primenews/story/0,1870,137582,00.html">http://straitstimes.asia1.com.sg/primenews/story/0,1870,137582,00.html>?

A COMPUTER glitch caused the blackout that paralysed parts of Singapore
for 90 minutes last Monday, said power regulator Energy Market Authority
yesterday. 
It added that a group made up of seven officials from the authority and
various power companies will meet starting this week to review
operations and come up with ways to prevent a recurrence of such an
incident, seen as the country's worst blackout in 10 years.

The group, which includes representatives from the four companies whose
generators tripped on Aug 5, has been given a month to present its
findings, said the authority's chief executive, Mr Khoo Chin Hean.

It is not clear what went wrong in Indonesian natural-gas supplier West
Natuna's computer system during a routine check on Aug 5, but this
malfunction prompted an emergency valve to close, cutting off the flow
of the gas to one of  two Singapore providers of the fuel, SembCorp Gas.

The lack of gas tripped seven power plants. As a result, there was an 8
per cent shortfall in the amount of electricity needed. The lapse forced
SembCorp to slice 20 per cent off its gas price for three hours after
the blackout, but West Natuna refused to say how much it is compensating
the Singapore company.

So far, the authority has not decided if it will calculate how much the
power failure cost the economy. It said businesses seeking compensation
can do so through legal channels, as 'these are commercial issues bound
by contracts'.

Changi airport, the MRT system and hospitals were not affected by the
cut, but Singaporeans in at least 228 residential blocks, offices and
industrial buildings were.

One way to prevent a recurrence, said Mr Khoo, is for Singapore to
diversify  its energy sources, something the island was doing even
before last week's blackout.

Next year, it will start buying natural gas from Sumatra. This will
reduce the number of gas-power plants now reliant on the gas from
Indonesia's Natuna and Malaysia's Petronas companies.

He said: 'At least if one pipe line is disrupted, the number of plants
affected will be fewer.'

About 40 per cent of the total energy used here is generated by nine
gas-powered plants, while the rest is provided by 16 oil-powered ones.

Natural gas is expected to be used to produce half the island's
electricity by 2004, because it is cleaner than diesel.

Singapore is also studying the use of liquefied natural gas, and the
pooling  of different natural-gas sources into one network. This last
will allow suppliers to make good others' shortfall.

Meanwhile, those involved in the recent power blackout will not be
penalised, though the regulator can fine, as well as issue warnings to
electricity providers for lapses.

'We are not trigger happy,' said Mr Khoo, adding that at this point the
authority does not believe the blackout was caused through the
licensees' negligence.

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