Noble Corporation

DROPPED OBJECTSPREVENTION

SYSTEM OVERVIEW

2

NOBLE DROPPED OBJECTS PREVENTION

Noble Drilling began implementing a derrick dropped object campaign within the European mobile fleet in 1998 which has since been extended to other Noble divisions (Was also introduced onto client owned fixed installations)

This drive to reduce the potential of dropped objects is based on competent third party inspections and scheduled maintenance procedures being carried out, with all discrepancies found being actioned through the correct reporting channels.

Maintenance schedules include annual third party surveys and weekly routines carried out by members of the rig crew.

The annual third party survey consists of both a derrick inventory check and a derrick structural inspection in accordance with API specifications

In order to ensure all parties maintain consistency, the derrick is divided into seven standard areas (slide 4)

The complete Noble derrick inspection process is shown on page 3 of the DIM introduction and the following slide

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NOBLE DROPPED OBJECTS PREVENTION

Actual up to date Derrick Inventory

• Recommended Procedure and Practices

• Detailed equipment and fastening list

• Manufacturers Recommendation(s)

• Corrective Actions Required / Ongoing

On a weekly basis, the PMS system prompts RM to issue checklist to competent person for the section of the derrick due combined with list to check travelling equipment

RM reviews findings of inspection

Defects, Lessons Learned, Suggestions on checklist (keep lists on file for 1 year)

RM Raise DACAR.

Update Derrick Inventory

OPERATIONS DEPARTMENT

• Sets standards

• Monitors quality, competency and compliance

• Holds electronic copy of all Derrick Inventories

• Co-ordinates sharing of Learning

Initial Derrick Inventory

Rig or 3rd Party

TECHNICAL SUPPORT

• Manufacturer Recommendation

• Technical Specifications

• Best Practice

• Engineering Bulletins

SAFETY DEPARTMENT

• Policy Changes

• Safety Flashes

• Industry Learning

• Legislation

ONSHORE -

OPERATIONS MANAGER

OFFSHORE -

RIG MANAGER

DERRICK INSPECTION MANUAL

Responsibility

Information only

Close out DACAR

Rig Superintendent

• Monitors compliance

• Monitors quality

• Audits actual status of Derrick Inventory and Competency on rig visits

Ensure competency of personnel authorised to do inspections

• Record to be kept

OperationsDerrick TemporaryEquipment Register

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NOBLE DROPPED OBJECTS PREVENTION

5

NOBLE DROPPED OBJECTS PREVENTION

EXAMPLES OF TYPICAL DEFECTS

Scaffolding parts located in cross member

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NOBLE DROPPED OBJECTS PREVENTION

Debris located in cross member

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NOBLE DROPPED OBJECTS PREVENTION

Winch wire cutting through bracket

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NOBLE DROPPED OBJECTS PREVENTION

Strip light cover held in place with tape

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NOBLE DROPPED OBJECTS PREVENTION

Junction box held in place with welding rod

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NOBLE DROPPED OBJECTS PREVENTION

Objectives To reduce the potential of dropped objects from derricks by the

following means;

By performing initial derrick structural inspections and derrick inventories with experienced and competent third party vendors.

By removing redundant equipment highlighted within the derrick inventory.

By closing out all defects at the time of detection or as soon as practicable.

By ensuring any outstanding defects are highlighted within the maintenance system and appropriate correct action request raised.

By maintaining a ‘live’ derrick inventory through weekly and annual maintenance routines.

By ensuring all relevant safety alerts, policy changes, etc. are forwarded and implemented where appropriate.