[14] GS_EP_LSO_410_EN

Exploration & Production

This document is the property of Total. It must not be stored, reproduced or disclosed to others without written authorisation from the Company.

GENERAL SPECIFICATION

Logistics and Operational Support

GS EP LSO 410

Manned underwater operations

03 09/2009 Updated with implementation of OGP code of practice

02 08/2007 Simplified and updated to cover the use of divers for surface, in-water operations

01 11/2005 Addition of EP root to GS identification

00 05/2004 Revision & issue as LSO document (previously GS STR 461)

Rev. Date Notes


General Specification Date: 09/2009

GS EP LSO 410 Rev: 03


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Contents

1. Scope .......................................................................................................................4

2. Reference documents.............................................................................................4

3. Purpose....................................................................................................................5

4. Application...............................................................................................................5

5. Definitions................................................................................................................6

6. Compliance............................................................................................................10

7. Minimum required DP Class levels for Underwater Operations........................11

8. Worksite representatives......................................................................................11

9. Diving System audits ............................................................................................11

10. Dive site general organization .............................................................................12

11. Dive team personnel .............................................................................................13

12. Diving health and safety .......................................................................................13

13. Diving Accident Drill .............................................................................................14

14. Medevac .................................................................................................................14 Appendix 1 Atmospheric Diving Suit.....................................................................................15 Appendix 2 Habitat ...............................................................................................................16 Appendix 3 Inshore/inland diving..........................................................................................17 Appendix 4 Live boating .......................................................................................................18 Appendix 5 Mobile/portable surface supplied systems (also called SCUBA replacement)

AIR/NITROX ......................................................................................................................19 Appendix 6 Observation diving .............................................................................................20 Appendix 7 ROVs in support of divers ..................................................................................21 Appendix 8 Saturation diving ................................................................................................22 Appendix 9 SCUBA ..............................................................................................................23 Appendix 10 Surface Supplied offshore diving - AIR/NITROX ...............................................24 Appendix 11 Surface Supplied mixed gas diving - HELIOX/TRIMIX ......................................25





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Appendix 12 Surface swimming .............................................................................................26 Appendix 13 Bounce or TUP diving........................................................................................27 Appendix 14 Scientific & archeological diving ........................................................................28





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1. Scope Diving operations, ROV in support of diving operations or surface swimming operations which are not in full compliance with the minimum standards described in this Company General Specification shall not be allowed to take place within DGEP affiliates and projects.

Contractors providing services for the Company shall strictly comply with this General Specification.

When the main contractor is not the diving contractor or the direct employer of the divers, his responsibility is to ensure that the Company Standards are met by the sub-contractors, regardless of the number of tiers in the contractual arrangements.

Manned underwater operations, other than Diving or Surface Swimming, such as Atmospheric Diving Suit (ADS) or manned submarine shall be approved by DGEP Underwater Operations Specialists.

2. Reference documents The reference documents listed below form an integral part of this General Specification. Unless otherwise stipulated, the applicable version of these documents, including relevant appendices and supplements, is the latest revision published at the EFFECTIVE DATE of the CONTRACT.

Standards

Reference Title

Not applicable

Professional Documents

Reference Title

Not applicable

Regulations

Reference Title

Not applicable





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Codes

Reference Title

OGP (International Association of Oil & Gas Producers)

Diving Recommended Practice (DRP)

IMCA (International Maritime Contractors Association)

Current Guidance collection and Information notes from Diving (including AODC and DMAC), Marine, ROV and Survey divisions

International Code of Practice for Offshore Diving

IMO (International Maritime Organization)

COLREG (International Regulations for Preventing Collisions at sea), SOLAS, MARPOL

Code of Safety for Diving Systems

Other documents

Reference Title

Not applicable

Total General Specifications

Reference Title

Not applicable

3. Purpose This General Specification sets out the minimum requirements for diving operations carried out in all DGEP affiliates or projects.

4. Application This General Specification applies to all offshore, inshore and inland diving operations in all DGEP affiliates or projects, either directly or indirectly contracted.

This General Specification, along with the OGP DRP, provides the requirements to be strictly applied by any contractor providing diving services for a DGEP affiliate or project.





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5. Definitions Item Definition

Audit An audit is defined as a methodical, detailed and complete examination and/or evaluation of a system or process to establish that they are acceptable or suitable for their intended purpose in conformity with established standards and guidelines.

There is a DGEP formal “diving contractors technical qualification audit” procedure. The Company does audit diving contractors.

Diving System audits are standardized as IMCA DESIGN audits for each type of system. The Company normally does not audit diving systems. These audits are performed, depending on the complexity of the system, either by the contractor, or by a third party.

Class Status assigned to a diving system that has met the rules of an IACS classification society.

Closed Bell A Submersible Decompression Chamber (SDC) used for transferring divers under pressure to and from the underwater worksite.

Company A Total E&P affiliate, Group Project or other entity carrying out oil exploration and production activities on behalf of or for DGEP. It does not include non-operated assets.

Contractor Any person or an organization who is directly involved in execution of prescribed work under a contract with the reporting to COMPANY or COMPANY representative.

Diving Action of a person who enters either (1) the water to perform underwater works or (2) an hyperbaric chamber and who will be subjected to a pressure greater than 0.1 bar above atmospheric pressure. Professional diving is performed using an equipment that gives the diver capability to breathe air or other gas at a pressure greater than atmospheric pressure.

Diving Accident Situation of a diver showing clinical symptoms while or subsequent to working under pressure.

This definition regardless if dive profile and procedures have been respected or not, and regardless if the symptoms have disappeared after treatment or not.

A man working underwater is exposed to different types of diving accidents, with different levels of gravity: desaturation type 1 and type 2, barotraumas, drowning, physiological reactions to gas toxicity, hypothermia, work related injuries…





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Item Definition

Diving Incident Situation of a diver submitted to a non-compliant dive profile or facing a significant down-graded situation due to an equipment failure, without clinical symptoms.

Fast ascent, omission or non respect of decompression stops, non respect of the surface interval, diving spread failure or breathing gas anomaly are diving incidents.

Diving Medical Specialist (DMS)

A doctor who is competent to manage the treatment of diving accidents, including, where appropriate, mixed gas and saturation diving accidents. Such a doctor will have passed specialized training and have demonstrated experience in this field.

Diving Specialist A qualified professional diver and diving supervisor whose competence in a specific diving technique is recognized by Head Office DGEP Underwater Operations Specialists.

Diving Support Vessel

A surface watercraft, used to support the diving team and/or from which divers are deployed, in any offshore, inshore or inland diving operation.

There are dedicated DSVs, especially designed for the purpose of diving operations, and DSVs “of opportunity”.

Diving System The whole plant and equipment for the conduct of diving operations.

Deficiency or Non-Conformity

A deficiency is an item or condition that is considered sub-standard or below minimum expectations, such as those mandated by either Company Rules, Specifications or drawings.

Derogation Is the temporary and partial revocation of a Company Rule or General Specification.

DGEP Underwater Operations Specialists

A person, assigned to Head Office DGEP TDO, who by virtue of training, education, profession, publication or experience, has extensive knowledge or ability in the area and able to give sound advice or expertise in the global field of underwater operations.

Equipment Certification

A document that confirms that a particular test or examination has been carried out or witnessed at an identified time on a specific piece of equipment or system by a competent person.

Inspection An inspection is defined as an examination of a diving system to verify that it is suitable for its intended purpose and its conformity with its specifications and contractual prescriptions.

Inspection of diving system is performed by the company regarding the IMCA DESIGN audit of the system provided by the contractor; in order to verify and assess acceptability of the diving system.

It is not an audit.

Medical examiner of divers

A doctor who is trained and competent to perform the annual assessment of fitness to dive for divers. He may not possess knowledge of the treatment of diving accidents.





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Item Definition

Offshore site The term offshore site is a generic term that applies to a geographical location in which one or more offshore installations undertake oil & gas-related activities and designate any construction, floating or otherwise, designed and built to be installed at an offshore, coastal or inland waters site including oil and gas terminals.

Review A Review is an assessment of diving operations and interfaces with other activities or departments within an Affiliate.

The purpose of a Diving Works Review is to ensure compliance with DGEP Rules & General Specifications, to identify areas of excellence or improvement and to provide assistance and advice in the management of Underwater Operations.

It is not an audit.

Saturation Diving The diving technique used during diving operations where the diver has reached the full physiological saturation state for the pressure and breathing mixture used. When this state has been reached, the time required for decompression is not further increased in relation to the duration of the dive. It requires a closed bell.

SCUBA Diving Diving using a Self Contained Underwater Breathing Apparatus

Only Air & Nitrox open circuit breathing apparatus are considered by the company and this under very restrictive circumstances (Closed & semi-closed circuit re-breathers are not considered).

Simultaneous Operations (SIMOPS)

The simultaneous execution of two or more operations.

A term used when two or more operations, such as, but not limited to, production, construction, heavy lift, diving, ROV, Marine are performed concurrently.

Simultaneous operations generally have an impact on the installation safety procedures and contingency planning processes.

Surface Supplied Diving

Diving Operations that do not use a closed bell, regardless of the gas mixture used. It includes (1) Mobile Surface Supplied and (2) Surface Supplied techniques using Air or Nitrox; and (3) Wet Bell technique using mixed gas Heliox or Trimix.

Surface swimming Action of a person who enters the water to perform in-water works and who will be subjected to a pressure less than 0.1 bar above atmospheric pressure.

TUP or Bounce Diving

A form of bell diving where the diver is exposed to pressure for an insufficient time for the dissolved gas in body tissues to reach saturation. It requires a closed bell.





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Item Definition

Underwater Operations

They are an integral part of Marine Operations. Underwater Operations are those conducted by Divers, Remote Operated Vehicles (ROVs), Autonomous Underwater Vehicles (AUVs), Atmospheric Diving Suit (ADS) or Manned Submarine.

Diving Operations are part of Underwater Operations.

Watercraft Temporary marine support craft like floating unit, specialized vessel, boat, crew boat, barge, mobile offshore (drilling) units (MO(D)U), oil and gas tankers, submarines and Remotely Operated Vehicles (ROV).

Wet Bell A diving basket with a closed top section which is capable of containing a dry gaseous atmosphere to provide a refuge for the divers. A supply of spare gas is carried on the Wet Bell. The Wet Bell is the technique used for Surface Supplied mixed gas Heliox & Trimix diving.

Acronym Meaning

ADS Atmospheric Diving Suit

AODC Association of Offshore Diving Contractors (predecessor to IMCA)

AUV Autonomous Underwater Vehicle

CDR Company Diving Representative

COLREG Regulation to prevent Collision at sea

CR Company Rule

DCP Diving Competent Person

DDC Deck Decompression Chamber, also called hyperbaric chamber.

DESIGN IMCA Diving Equipment Systems Inspection Guidance Note

DGEP Total Direction Générale de l’Exploration Production

DMAC The IMCA Diving Medical Advisory Committee

DMS Diving Medical Specialist

DP Dynamic Positioning

DSV Diving Support Vessel

ERP Emergency Response Plan/Procedure

FMEA Failure Mode Effect Analysis

FRC Fast Rescue Craft

GS General Specification

HAZID Hazard Identification





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Acronym Meaning

HELIOX Helium & Oxygen mixture

HRC Hyperbaric Rescue Chamber

HSE Health, Safety & Environment

IACS International Association of Classification Societies

IMCA International Maritime Contractors Association

IMO International Maritime Organization

LSP Life Support Package

NITROX Nitrogen & Oxygen mixture

OGP International Association of Oil & Gas Producers

OGP DRP OGP Diving Recommended Practice

Pp Partial pressure. PpO2 : oxygen partial pressure.

RA Risk Assessment

ROT Remote Operated Tool

ROV Remote Operated Vehicle

RSES-D Responsible for Safety & Environment on Site - Delegate

SCUBA Self Contained Underwater Breathing Apparatus

SOLAS Safety of Life at Sea

TRIMIX Helium, Nitrogen & Oxygen mixture

TUP Transfer Under Pressure

UW Underwater

6. Compliance The reference code of practice for DGEP Diving Operations is the OGP Diving Recommended Practice (OGP DRP).

IMCA Marine/Diving/ROV/Survey divisions current Guidance and Information Notes, including those from AODC and DMAC, are integral to the OGP DRP. This General Specification is based on the OGP DRP and specifies additional requirements as deemed necessary by the Company.

Where conflicts arise between international or national requirements and this GS, the more stringent shall take precedence.





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7. Minimum required DP Class levels for Underwater Operations The table below shows the minimum IMO DP Class level required when conducting particular types of underwater operations. Each type of operation should be risk assessed and, where the assessment shows that a higher DP Class is required than that shown in the table, watercraft with the higher DP Class shall be used.

DP Operators competence shall comply with IMCA requirements.

Head Office DGEP Underwater Operations Specialists shall be consulted regarding the DP Class of Operation required for any watercraft for underwater operations not listed below.

Type of operation Location DP Class of Operation

Underwater operations where divers are required to be deployed inside an anchor pattern or to enter an enclosed or confined space e.g. Subsea manifold, wellhead, jackets or wreck.

World-wide 3

Underwater operations with Saturation, TUP or Surface Supplied diving. World-wide 2

Underwater operations with manned submarine or Atmospheric Diving Suit. World-wide 2

Operation requiring vessel and/or ROV connected to Subsea System (crane, hot stab...) World-wide 2

Vessel in ROV, ROT, AUV operations Less than

300 m from an installation

2

Vessel in ROV, ROT, AUV operations More than

300 m from an installation

1

8. Worksite representatives The Company normally appoints on the dive site a Company Diving Representative (CDR) for the duration of the diving operations. His role and responsibilities are described in the OGP DRP.

The diving contractor shall designate a contractor representative on site to be the single point of contact for the CDR regarding diving works and safety. Should the contractor representative have a back to back for 24 hour operations, then one of them shall be designated senior contractor representative.

9. Diving System audits No later than mobilization, the contractor shall provide the relevant IMCA DESIGN Audit, less than 1 year, of the diving system to the company. This audit shall be updated as necessary





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(some equipments require verification every 6 months) at the time of mobilization. No significant issue shall arise.

The Company does an Inspection of the system regarding the audit provided by the contractor.

For Mobile Surface Supplied, Surface Supplied and Wet Bell diving systems, self auditing by the contractor is accepted.

For Closed Bell diving systems (Saturation, TUP) the audit provided by the contractor shall have been performed and issued by a third competent party.

Saturation diving systems shall be built according to class rules and ranked by an IACS classification society.

Closed Bell diving operation in open water, that is when the underwater worksite is located significantly above the seabed, requires a bell outer door, or a door that can sustain outer pressure (castellated).

Should diving equipment, which is part of the diving system, be changed during the contract, the DESIGN audit relevant chapters shall be kept updated by the contractor and presented to the Company.

The contractor shall commit to maintain the initial & periodic examination, testing and certification of the diving system, and all the components of the diving system, according to the industry standard (IMCA D 018) for the duration of the contract.

The contractor shall demonstrate the appropriate availability and/or proximity of critical spare-parts for its Diving Systems in order to ensure continuous operations. .

10. Dive site general organization The contractor representative shall have in his possession the latest versions of the following documentation:

• This General Specification: GS EP LSO 410

• OGP DRP

• IMCA Current Guidance collection and Information notes from Diving (including AODC and DMAC) and other necessary divisions

• The contractor’s diving manual.

All diving operations, day or night, shall display the correct lights, shapes and signals according to the IMO COLREG.

The underwater works procedure shall be risk assessed as necessary. When relevant the Risk Assessment shall include response to DP alerts and possible loss of position of the Support Vessel while she is connected to SUBSEA System and/or divers are in water.

The launch and recovery of divers shall comply with the code of practice, safe and good seamanship.

The launch and recovery of the surface stand-by diver shall comply with the code of practice, safe and good seamanship.

Access to the chamber shall be easy.





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The DSV (DP or 4 point mooring) shall operate to internationally relevant recognized standards (IMCA M 103) with competent crew (IMO circ 738, IMCA M 117). Failure Mode Effect Analysis (FMEA), annual trials, marine and DP audit (IMCA M 149) must have been carried out in due time and no major operational issue be reported.

11. Dive team personnel The contractor’s dive team personnel shall be in sufficient number for the planned works and all their qualifications be IMCA recognized. They shall be competent and experienced for the specific planned operation. Especially, all divers shall hold an IMCA recognized diving certificate and all diving supervisors shall hold an IMCA recognized supervisor certificate (Air or Bell).

All dive team personnel shall have on site the 3 original documents: relevant diving certificate(s), medical examination (less than 1 year) and logbook.

There shall be a common working language within the dive team.

The diving supervisor and contractor representative shall be proficient in the language of the maritime and working environment they operate in, and in the language of the contract.

The diving superintendents and supervisors shall have minimum 2 years offshore experience as diving supervisor and 4 years experience as an offshore commercial diver. Profiles shall be submitted to the Company before mobilization.

75% of the divers employed for the planned operation shall have minimum 2 years offshore diving works experience.

12. Diving health and safety A written Emergency Response Plan shall be issued prior the start of operations and all related arrangements be verified operational.

The Contingency Plan/Emergency Response Plan for diving accident is to be specified in the bridging document.

The contractor shall adhere to the respective definitions of “diving accident” and “diving incident” as adopted by the Company. They shall be duly reported to the Company via the CDR, who will gather complete information for further analysis by DGEP Underwater Operations Specialists.

The diving tables and hyperbaric treatment tables used by the contractor shall be approved by an appropriate official authority/body, such as Ministry Of Labour, Navy... The contractor shall strictly comply with the procedure described in the tables and cannot be less stringent.

The contractor’s hyperbaric treatment decision making flowchart shall be available at the dive control.

The DMAC 15 “Medical equipment to be held at the Site of an Offshore Diving Operation” shall be available on the dive site. Where a medical organization is in place as part of the offshore site or DSV where the divers are operating from, the diving contractor can put in place an agreement with this organization in order to achieve DMAC 15 objectives.

There shall be sufficient quantity and type of gas to conduct the treatment tables as per the contractor’s diving manual, and minimum 90 m3 of medical oxygen available at all times for the chamber.

The contractor shall have the necessary medical support arrangement 24/7 with a Diving Medical Specialist (DMS) and the associated reliable links of communication so that the diving





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supervisor can speak directly to the DMS at any time using a common language. This support shall be effective during all operations involving divers, and 24 hours after completion of the last decompression. Once operating offshore, a satellite phone service will most often be compulsory to achieve this purpose. The DMS contact information shall be available at the dive control. This safety link will be tested at mobilization and whenever deemed necessary.

The DMS shall be contacted as soon as possible for any case of diving accident, in order to confirm diagnosis and treatment.

For TUP and Saturation Diving (using a closed bell):

• Lost Bell recovery options shall be studied

• The Hyperbaric Evacuation plan, including the recovery of the Hyperbaric Rescue Chamber and the position of the Life Support Package shall be prepared. A second vessel, other than the DSV, shall be designated and remain within acceptable vicinity of the Saturation/TUP dive site for this purpose.

Diving in Polluted/Contaminated waters requires specific risk assessment, equipment and procedures.

13. Diving Accident Drill The Company shall be satisfied with the readiness of the diving team to deal with a diving accident.

It shall be confirmed as soon as possible after mobilization that the response of the team facing a serious diving accident is satisfactory.

The standard scenario to apply is: the working diver falls unconscious outside the basket (or outside the bell), the stand-by diver is launched, he performs recovery of the diver, the diver is recovered on surface (or in the bell), undressed for diagnosis, then transferred in the chamber and the team is ready to start recompression (for Surface Supplied diving). From surface to chamber, recompression is to be performed in less than 15 minutes by a proficient and trained team. The CDR shall satisfy himself with the global reactions of the dive team and DSV crew.

This basic exercise shall be repeated minimum every two months, or when more than 50% of the team members are changing, or when there is a change of diving technique or DSV, or any time the Company deems necessary.

Such drill shall, for Surface Supplied Diving, be practiced during a shallow non-decompression dive that will be, if necessary, organized just for that purpose.

14. Medevac Should a medevac by helicopter be decided after diving or after treatment, without a full desaturation of the diver, the flight altitude shall be no more than 300 meters.

It shall be clear that for the pathologies requiring hyperbaric treatment, recompression in the nearest chamber is the priority. However, there are cases when there may not be a chamber directly available on site (Inshore dive, breakdown…), when a vital emergency may take precedence on the diving pathology, when the pathology is not related to desaturation or pulmonary barotraumas or when the DMS, regarding medical priorities, will decide Medevac.




Appendix 1


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Appendix 1 Atmospheric Diving Suit

OGP DRP Appendix 1 applies.

In addition the following shall apply for the Company:

• Atmospheric Diving Suit operations shall be approved by DGEP Underwater Operations Specialists

• Emergency & contingency

Need for two operational ADS working at all times, one to assist other or one ADS and one ROV capable of assisting the ADS.




Appendix 2


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Appendix 2 Habitat



• Operations in underwater habitat shall be approved by a Company Diving Specialist.




Appendix 3


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Appendix 3 Inshore/inland diving





Appendix 4


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Appendix 4 Live boating





Appendix 5


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Appendix 5 Mobile/portable surface supplied systems (also called SCUBA replacement) AIR/NITROX



• Scope

Use of Mobile Surface Supplied systems is limited to 35 meters depth.

Use of Mobile Surface Supplied systems is limited to non-decompression dive profiles.

Use of Mobile Surface Supplied systems is limited to daylight hours only.

• Equipment

Head-mounted camera and video at the dive control.

• Operational factor

Maximum PpO2 allowed to breathe in-water is 1,6 bar.


Necessary arrangements shall be made so that the travel time between the dive spot and the DDC location permits to perform recompression of a diver in less than 15 minutes, from the moment he is recovered on surface.

In order to comply with this requirement, the mother vessel with the DDC shall be normally no more than 500 meters away from the dive site.

Should this distance be exceeded for operational reasons, the company requires that:

- In addition to the daughter craft divers are operating from, a Fast Rescue Craft (or equivalent), with crew, shall be deployed available in the water at the dive site under the control of the diving supervisor.

- One additional dive team member qualified in operating the DDC shall remain on board the mother vessel where the DDC is located.

• Health & Safety

2 dives maximum allowed per diver per 24 hours.




Appendix 6


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Appendix 6 Observation diving





Appendix 7


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Appendix 7 ROVs in support of divers


IMCA R 004 and AODC 32 guidance apply.


• Operational factors

The diving supervisor shall exercise global control of Diver/ROV SIMOPS.

The diving supervisor has authority on the ROV supervisor.




Appendix 8


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Appendix 8 Saturation diving



• Scope

Saturation diving is limited to 200 meters depth.

The use of mixed gas containing hydrogen is not allowed by the Company.


a/ For single bell saturation systems and when the depth on seabed is out of reach of the Surface Supplied stand-by diver, an ROV capable of assisting Bell Recovery shall be available on the DSV.

b/ Closed Bell diving operation in open water, that is when the underwater worksite is located significantly above the seabed, requires a bell outer door or a door that can sustain outer pressure (castellated).

Should the depth on the seabed, below the worksite, be out of reach of the Surface Supplied stand-by diver or a second bell (case of multi-bell saturations systems), an ROV capable of assisting Bell Recovery shall be available on the DSV.

c/ When ROV is the primary option for the Diving Bell recovery Emergency Response Plan, the ROV team shall be duly informed and be offered the opportunity to study the Bell and practice during a drill.




Appendix 9


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Appendix 9 SCUBA





Appendix 10


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Appendix 10 Surface Supplied offshore diving - AIR/NITROX



• Operational factor

Maximum PpO2 allowed to breathe in-water is 1,6 bar.

• Health & Safety


Progressive physiological tolerance to deep diving: Attention shall be paid that for diving operations below 40 meters the diver is not exposed, for his first dives after mobilization, to maximum authorized depth and bottom time. He shall be allowed to progressively increase depth (for narcosis effect tolerance); and progressively increase body saturation level which is related to depth & bottom time (for physiological desaturation process tolerance).




Appendix 11


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Appendix 11 Surface Supplied mixed gas diving - HELIOX/TRIMIX



• Health & safety

Diver shall not dive for the 12 hours prior to diving mixed gas and shall not dive for 24 hours after.

Progressive physiological tolerance to deep diving: Attention shall be paid that for diving operations below 40 meters the diver is not exposed, for his first dives after mobilization, to maximum authorized depth and bottom time. He shall be allowed to progressively increase body saturation level which is related to depth & bottom time (for physiological desaturation process tolerance).




Appendix 12


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Appendix 12 Surface swimming

OGP DRP appendix 12 applies.


• Scope

Daylight only.

• Minimum team size and competence

Swimming is only performed by professional divers, e.g. personnel holding an IMCA recognized diver certificate.

The minimum team size is 4. 1 lead diver in charge of the operation (not necessary an IMCA recognized diving supervisor but with minimum 5 years experience in offshore diving), 1 diver in the water, 1 stand-by diver, 1 coxswain or able seaman (steering the daughter craft and ensuring lookout).

• Equipment, Swimmer and stand-by swimmer shall have the same complete equipment available.

Swimming Helmet.

Buoyancy compensator so that swimmer has positive buoyancy in the water.

Appropriate first aid kit including emergency oxygen administration set available at dive site.




Appendix 13


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Appendix 13 Bounce or TUP diving



• TUP Diving operations shall be approved by DGEP Underwater Operations Specialists.




Appendix 14


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Appendix 14 Scientific & archeological diving



• Scope

Air/Nitrox open circuit breathing apparatus only. Nitrox containing 40% Oxygen maximum.

Use of SCUBA is limited to non-decompression dive profiles & depth 30 meters maximum.

Use of SCUBA is limited to daylight hours only and underwater visibility more than 1 meter.

• Minimum team size and competence

All Divers shall hold an appropriate professional diving qualification.

Participation of sport/recreational divers shall be approved by DGEP Underwater Operations Specialists on a case by case basis.

• Equipment

The dive boat shall be fitted with guarded propellers.

The main breathing supply shall have 2 High Pressure outlets, each one of them fitted with a first stage and second stage regulator. It shall be fitted with 1 pressure gauge and 1 inflator. No HP outlet shall be left free. Minimum main supply capacity is 15 litters. Minimum pressure to start a dive is 150 bars.

Inflatable stabilization jacket is compulsory.

Each diver shall have an inflatable signalization parachute.

Watch, bathymeter, waterproof diving table.

• Operational factors

The supervisor must be able to recall the divers back on surface at anytime.

The supervisor shall specify to the divers the maximum depth and the maximum bottom time they shall respect before they enter water.

Diving is performed by 2 men (or 3 men) team(s) attached by a buddy line(s), 5 meters long maximum. When the underwater visibility is more than 10 meters, the buddy line may be removed but divers shall always stays within 5 meters vicinity, in sight of each other. 1 of the divers shall be designated as the team leader.

Underwater works shall stop and the whole team shall start ascent as soon as 1 of the diver’s pressure gauge indicates 50 bars.

• Health & Safety





Appendix 14


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Whenever a DDC has to be immediately available on the dive site, necessary arrangements shall be made so that the travel time between the dive spot and the DDC location permits to perform recompression of a diver in less than 15 minutes, from the moment he is recovered on surface.