** Cape falls as much as 12 pct after it said orderbook fell in the first quarter
** Cites maintenance-contract delays in UK and projectdeferrals at Motherwell Bridge unit
** Stock was biggest drag on FTSE small cap index,with nearly 98 pct of its full day average trading volumechanging hands within the first 10 minutes
** Says UK market expected to be subdued in 2015 with loweroffshore project activity and reduced volumes from coal powerstation outages, partially offset by solid demand for coremaintenance activities (abhiram.nandakumar.thomsonreuters.com@reuters.net)