30 equipment & cabling update
➠
it comes to cable cleats? To answer this, installations cables being calculated so as to ascertain the type and
need to be split into two categories – new and old. strength of the cleat required.
In the case of new installations, the process needs to A number of other factors then need to be taken into
begin during the design stages. account, including physical performance, mounting
Ideally, this would commence with the forces between surface and the environment in which the installation will
be situated.
Only when this has all been tested and
measured can the designer be confident
of specifying the correct cleat for the
installation.
Old installations
Old installations meanwhile pose a
completely different set of problems.
Many will have been installed before the
introduction of any related standards,
while those that came later may still not be
suitable.
Therefore, it’s advisable to review all
cabling in such installations to ensure it
is safely restrained in relation to today’s
requirements.
Understanding the need for cleats and
the processes involved in their correct
specification is though only half the story.
Fig.3. Offshore use – samples of Ellis Patent’s Emperor cleats being used in offshore Cleats themselves come in a variety
environments. of sizes and types and it’s important to
RepoRt highlights impact of downtuRn on subsea supply chain
a
new report reveals that offshore said alistair birnie, chief executive of estimated earnings for oilfield
oil and gas activity in mature Subsea uK. services companies illustrate a
provinces such as the north Sea is the report shows that the analyst 3 per cent decrease from december
more at risk than deepwater areas like group has forecast an overall decline 2008 to march 2009 and a
West africa in the current economic in earnings per share across all subsea 14 per cent decrease in earnings per
downturn. the Subsea uK study, exposed sector groups in the period share expected from 2008 to 2009.
supported by Scottish enterprise, from december 2008 to march 2009. these companies expect reduction
paints a picture of continued Within drilling there was a in expenditure from their primary
uncertainty in the oil and gas sector marginal drop of 0.6 per cent for the clients, pricing pressures, geographic
through 2009 and 2010, the impact of first quarter of 2009 but an overall weakness in north america and Russia
which cannot be underestimated. 3.6 per cent rise in the annual and negative impacts of currency
“the outlook for 2009 has become earnings per share from 2008 to conversion.
more uncertain as announcements 2009. the companies involved have in offshore construction, earnings
of capital expenditure decreases significant deepwater exposure and a estimates show a 34 per cent decrease
filter through from exploration and varied international presence. from december 2008 to march
production companies globally. With high barriers to market entry 2009 and a 15.6 per cent decrease
expectations are that offshore activity and the recent trend towards in earnings per share expected from
will be adversely affected particularly long-term contract awards, the 2008 to 2009.
in regions where production is mature overall sentiment in the rig market is equipment manufacturers are
and investment costs are high. the that the outlook remains positive. facing a 22.2 per cent decrease in
deepwater markets however seem to the revenue backlog remains strong earnings per share from december
be more insulated from what may be for the deepwater fleet, jack-up 2008 to march 2009 but a 3.5 per cent
a short to medium term reduction markets are poised for reduced increase in earnings per share from
in upstream investment as projects activity and day rates, geographic 2008 to 2009. l
in these areas are often larger and weakness is expected in West africa
planned on longer term, more and the middle east and the shallow For more information, visit
conservative oil price assumptions,” markets, including the north Sea. ww.subseauk.org
www.engineerlive.com
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