Service_Derrick
Derricks

During a periodic derrick survey our inspectors perform a complete category III or IV inspection on the drilling derrick in accordance with the API Recommended Practice 4G.
During a periodic derrick survey, Control Union inspectors perform a complete category III or IV inspection on the drilling derrick in accordance with API Recommended Practice 4G.
 
Control Union's visual inspection covers all aspects of the derrick, including the derrick legs and various pad eyes and beams. As part of the rig audit, Control Union can also add bolt tension checks or torquing to the survey if required.
 
As one of the world's leading rig inspections companies, Control Union can supply rope access trained inspectors, trained to IRATA level 1, 2 or 3 (or equivalent), to complete surveys in inaccessible areas and ensure work at height is performed safely and quickly.