Nasa chiefs 'repeatedly ignored' safety warnings
"White House officials rejected Nelson's plea for a moratorium."
Peter Beaumont
Sunday February 2, 2003
The Observer
Fears of a catastrophic shuttle accident were raised last
summer with the White House by a former Nasa engineer who
pleaded for a presidential order to halt all further shuttle flights
until safety issues had been addressed.
In a letter to the White House, Don Nelson, who served with
Nasa for 36 years until he retired in 1999, wrote to President
George W. Bush warning that his 'intervention' was necessary to
'prevent another catastrophic space shuttle accident'.
During his last 11 years at Nasa, Nelson served as a mission
operations evaluator for proposed advanced space transportation
projects. He was on the initial design team for the space shuttle.
He participated in every shuttle upgrade until his retirement.
Listing a series of mishaps with shuttle missions since 1999,
Nelson warned in his letter that Nasa management and the
Aerospace Safety Advisory Panel have failed to respond to the
growing warning signs of another shuttle accident. Since 1999
the vehicle had experienced a number of potentially disastrous
problems:
· 1999 - Columbia's launch was delayed by a hydrogen leak and
Discovery was grounded with damaged wiring, contaminated
engine and dented fuel line;
· January 2000 - Endeavor was delayed because of wiring and
computer failures;
· August 2000 - inspection of Columbia revealed 3,500 defects in
wiring;
· October 2000 - the 100th flight of the shuttle was delayed
because of a misplaced safety pin and concerns with the
external tank;
· April 2002 - a hydrogen leak forced the cancellation of the
Atlantis flight;
· July 2002 - the inspector general reported that the shuttle
safety programme was not properly managed;
· August 2002 - the shuttle launch system was grounded after
fuel line cracks were discovered.
White House officials rejected Nelson's plea for a moratorium.
He tried to talk again to Nasa's administration about his worries
in October but was again rebuffed.
Yesterday Nelson told The Observer that he feared the Columbia
disaster was the culmination of 'disastrous mismanagement' by
Nasa's most senior officials and would inevitably lead to the
moratorium he was calling for.
'I became concerned about safety issues in Nasa after
Challenger. I think what happened is that very slowly over the
years Nasa's culture of safety became eroded.
'But when I tried to raise my concerns with Nasa's new
administrator, I received two reprimands for not going through
the proper channels, which discouraged other people from
coming forward with their concerns. When it came to an
argument between a middle-ranking engineer and the astronauts
and administration, guess who won.
'One of my biggest complaints has been that we should have
been looking for ways to develop crew escape modules, which
Nasa has constantly rejected.'
His claims emerged against a background of growing concern
over the management of safety issues by Nasa.
They followed similar warnings last April by the former chairman
of the Aerospace Safety Advisory panel, Richard Bloomberg,
who said: 'In all of the years of my involvement, I have never
been as concerned for space shuttle safety as now.'
Bloomberg blamed the deferral or elimination of planned safety
upgrades, a diminished workforce as a result of hiring freezes,
and an ageing infrastructure for the advisory panel's findings.
His warning echoed earlier concern about key shuttle safety
issues. In September 2001 at a Senate hearing into shuttle
safety, senators and independent experts warned that budget
and management problems were putting astronauts lives at risk.
At the centre of concern were claims that a budget overspend of
almost $5 billion (£3bn) had led to a culture in Nasa whereby
senior managers treated shuttle safety upgrades as optional.
Among those who spoke out were Democratic Senator Bill
Nelson of Florida, who warned: 'I fear that if we don't provide the
space shuttle programme with the resources it needs for safety
upgrades, our country is going to pay a price we can't bear.
'We're starving Nasa's shuttle budget and thus greatly increasing
the chance of a catastrophic loss.'
Although Nasa officials said that improvements were being made
they admitted that more needed to be done.
A year earlier, a General Accounting Office report had warned
that the loss of experienced engineers and technicians in the
space shuttle programme was threatening the safety of future
missions just as Nasa was preparing to increase its annual
number of launches to build the International Space Station.
The GAO cited internal Nasa documents showing 'workforce
reductions are jeopardising Nasa's ability to safely support the
shuttle's planned flight rate'.
Space agency officials discovered in late 1999 that many
employees didn't have the necessary skills to properly manage
avionics, mechanical engineering and computer systems,
according to the GAO report.
The GAO assembled a composite portrait of the shuttle
programme's workforce that showed twice as many workers over
60 years of age than under 30. It assessed that the number of
workers then nearing retirement could jeopardise the
programme's ability to transfer leadership roles to the next
generation to support the higher flight rate necessary to build the
space station.
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