The “Everywhere” HazardDropped Object IADC Conference 23-24 March 2011

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Ensco Asia Pacific Rim APRHad 53 Dropped Object Cases in

2009 with a percentage of 21% of all UPE

Had 23 Dropped Object Cases in 2010 YTD with a percentage of

13.4% of all UPEALL Dropped Objects must be reported as High Potential

Level 2 incident as they could cause a major injury

Dropped Object

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Summary of anticipated dropped object cases:

Unsecured Objects fall from Derrick (Top drive parts,

Dolly roller pins, Elevator parts, Bolts/nuts, Derrick Lights,

Standpipe bolts, Drill string parts such as clamps)

Unsecured Lifting Gear during Crane Lifting operations

Falling pieces of Scaffolding

Falling objects from Persons Hands

Broken straps of Nylon bags that used to lift protectors

Dropped Object

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Summary of anticipated dropped object cases :

Lifting Hook release

Falling objects during Wire Line/Coil Tubing operations

Unsecured objects fall from beneath rig floor to platform

Unsecured objects/hoses fall into the sea

Objects, Casing/Tubing string fall in the hole

Blown off objects due to high winds/helicopter downdraft

Falling of Unsecured helmet

Dropped Object

APRBU Standard Format Sept. 085

The Day Toolpusher delegated two tasks to the Assistant Driller,both of them wereto be performed in the Derrick

The first task was to install a safety sling to a piece of Derrickequipment.

The second task was to remove a redundant safety clamp from apermanently installed cement hose which hangs in the Derrick.

The Assistant Driller completed the first task safely.

The Assistant Driller relocated himself in the Derrick andcommenced the removal of the redundant safety clamp, duringwhich time the clamp dropped 35’ coming to rest on the DrillFloor 2.5’ away from an unrelated work party.

Dropped Object

Incident Example:

Eyewitness of clamp impact.

NTP, Floorman #1, Floorman #2

Eyewitness of clamp impact. Derrickman

Eyewitness of clamp impact. Floorman #3

Clamp position at the time of

incident

Dropped Object

Position of clamp prior to

removal

Position of worker prior to

incident

Actual barrier posted

Final position of

clamp

Dropped Object

Dropped Object

Height 35

Mass 12

Outcome DAFWC

Assumptions for use:1. All potential energy from a object initially at rest is transferred to kinetic energy when dropped. 2. The only acceleration is due to the force of gravity, which is assumed to be constant and essentially at sea level. 3. All energy is assumed to be absorbed by the individual and the PPE. 4. A fatality is the result of the total force required to break both the hard hat as well as the cranium. 5. A DAFWC is the energy required to break a bone in the shoulder or top of the foot. 6. A medical treatment case is the energy necessary to cause a laceration requiring sutures.7. The energy levels less than that requiring medical treatment are assumed to fall into the first aid category at worst.8. The dropped object is assumed to be blunt edged, and whereas shape might be assumed to be spherical, it really only makes a significant difference if the object has a thin flat edge or is shaped like a javelin.9. The worker with a potential to be struck is 25 - 40 years of age, is a male and weighs approximately 80 kilograms.

Outcome Calculator This program is based on physical laws of how mass of an object dropped from a height from and the relationship to the energy/force affecting the human body.

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Fatality

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First Aid

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Intended safety sling.

Actual clamp involved in incident.

Dropped Object

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Summary of Causes behind these dropped object cases:

Dropped Object List does not cover all probable objects

Improper Routine or Pre-job Inspection

No Immediate Inspection after Critical operations such as

Jarring/High Vibration Drilling

Inadequate securing of equipment before Critical operations

such as MWD/Mud motor testing, Wire Line operations

No inspection/securing of Lifting Gear before and after

Crane Lifting operations

Dropped Object

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Summary of Causes behind these dropped object cases :

Inadequate securing/inspection of Scaffolding

Persons not using the correct securing way/retention tool

while carrying objects

Using uncertified lifting tools

Improper use of Chain Hoist/Hooks

Critical Equipment failure such as slips inserts failure

Bad Communications and/or insufficient work instructions

Dropped Object

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The hose stocking restraining device wrapped around the end of the pressure test hose with broken wire strands.

The eye of the hose-stocking restraining device still attached to shackle and air hoist.

Dropped Object

Incident Example:

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This is an intact hose stocking restraining device which was not involved in the incident. The hose stocking restraining device is not a certified lifting device and is designed to be used like a conventional ‘whip check’ to prevent hoses from kicking or ‘whipping’ in the event of an uncontrolled pressure release.

Dropped Object

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Corrective Actions:

Continuous Revision and Development of Dropped Object

Check List by the most experience hands onboard the rig

Accuracy and Commitment with Routine Inspection,

always look for more inspection than what is listed and

have a Wide and Deep Look

Immediate special inspection/securing before and after

Critical operations

Frequent inspection of Critical equipment such as slips

Dropped Object

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Dropped Object

ENSCO RIG 97Dropped Object Inspection (Note: Write auditor's name in Colored box when sheet handed in to OIM)

Month: June-08

ZONES for Dropped Object Wk-1 Wk-2 Wk-3 Wk-4 Wk-5

Derrick Man A-Frame -Crown -Water Table Shaju John Melwin Furtado

1st-2nd Platform & Monkey Shaju John Melwin Furtado

Zone 1 Board

Asst Driller Monkey Board Level Platforms Shaju John Melwin Furtado

Stabbing Board Shaju John Melwin Furtado

Zone 2

Floor Hands Travelling Equipment

Derrick Man and Top Drive Shaju John Shaju John

Zone 3

Rig Floor Shaju John Shaju John

Zone 4

Asst Driller

Floor Hands Substructure Shaju John Shaju John

Zone 5

Drill Crew Under Cantilever Clifford Fernandes Shaju John

Zone 6

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Corrective Actions:

Always inspect Lifting Gear before and after any Lifting

operation

Don’t use uncertified tools/equipment for any Lifting

operation (they must have the right color code)

Always ensure all pad eyes and lifting beams are certified

and have the right color code

Use the right hole cover and keep tools/parts away from

the hole as practical

Dropped Object

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Corrective Actions:

Always secure Light objects and keep Good Communications

Additional Corrective Actions:

Include specific Dropped Object List in every WI to include

the probable dropped objects related/involved into the carried

out operation

Create Temporary List to include Temporary Installations

such as scaffolding

Dropped Object

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Dropped Object

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Dropped Object

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Fortunately we have incurred No Personnel Injuries

caused by these incidents As the large majority of the

Dropped Object events had an effective pre-job Risk

Assessments that included PA announcements/warnings

and barricaded areas below work activity, But in some of

the cases the same Risk Assessments failed to capture

the required Tool Retention

Dropped Object

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Ensco continues to reduce the Dropped Object Incidents by implementing the prescribed Corrective Actions and using

the following Preventive Tools keeping an eye onZero Incident Work Place

Preventive Tools:

Preventive maintenance software program – Calendar based

Inspections

Independent Dropped Object Surveys – Annual Inspections

Core Value Team Audit and Inspections – Provide Ensco’s

Senior Management with continued assurance that all Ensco

facilities are in compliance with Ensco Corporate Policies

Dropped Object

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Dropped Object

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Preventive Tools:

Rig Specific Dropped Object Inspection Books with Photos

Tools Aloft Log Book

Management of Change

Safe System of Work SSOW (WI, JSA, and PTW)

Subcontractor and 3rd Party Equipment Inspection

Dropped Object

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Dropped Object

Always RememberDropped Object is a Hazard that exists

Everywhere and All the time because it is created by Gravity and Positions of

tools/equipment

But We Can Still Prevent it and Control it by the Continuous Inspection and Securing objects

LOW ATTENTION CAN KILL

Dropped Object