
Drops Survey
Purpose & Scope
- The dropped objects survey consists on conducting a detailed inspection of the mast/derrick and any other elevated structure for the potential drops hazard.
- A detailed report gives the assessment of the potential drops hazard and recommendations to limit such potential.
- The main purpose is to reduce potenitally fatal hazards caused by a dropped object
- The above scope can be reviewed and adapted to client requirements.
Review of Drops Management System
- Identification of all objects that can drop from their hanging location and harm people or equipment,
- Review of calculation notices for the capacity of each object support, last load tests,
- Check of any third party inspection report,
- Check of calculation, drawings and procedures for top drive guide alignment,
- Check of regular mast inspection,
- Check of regular top drive inspection (especially for loose items),
- Inspection of double securing features for potential dropped objects,
- Inspection of fixation of lighting fixtures, sheaves, moving parts, rollers, nuts, bolts, clamps…
- Control of the DROPS program and the frequency of inspection of each potential dropped object,
- Check of the tag on each dropped object
Drops Programme
- General drops awareness & Formalised drops programme,
- Specific training and discussions records,
- Inventories and records of drops,
- Installation of new equipments in the derrick and management of change,
- Manufacturer’s recommendations,
- Inclusion of drops into safety and maintenance procedures,
- Continuous improvement program
Drops Areas
- Mast/Derrick Sections:
- Crown section (bumpers beams, sheaves, handrails, lighting, bolting)
- Upper section (between crown & racking board)
- Racking board
- Lower section (between racking board and drill floor)
- Traveling Equipments (top drive, block, pipe handler, bundles and rotary hose)
- Substructure Sections:
- Outside cellar deck (mainly equipments falling from floor)
- Inside Cellar Deck (BOP handling equipments, lighting, accessories…)
- Other Areas:
- Rig Floor/Dog House/Drillers cabin
- Mud Pumps room
- Engine & electrical room
- Outside Deck
- Cranes
- …
- By:arthur_srioui
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