ADCI Consensus Standards - GAP Analysis Rev. 6 and 6.1 April 2, 2014

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1 ADCI CS Rev. 6 (2011) ADCI CS Rev. 6.1 (2014) Section 1.0 General Provisions IMPLEMENTATION OF CERTIFICATION AND EQUIPMENT REQUIREMENTS Superscripts 1- Compliance within 6 mos. 2- Compliance within 12 mos. 3- Compliance within 24 mos. 1-Compliance was required as of January Compliance was required as of July Compliance was required as of July 2013 Section 3.0 DIVING PERSONNEL RESPONSIBILITIES, QUALIFICATIONS AND CERTIFICATIONS All Certification Card Categories Section CERTIFICATION AND TRAINING MATRIX Section 4.0 DIVING MODES: DEFINITIONS, REQUIREMENTS AND GUIDELINES Section 4.1 GENERAL INTRODUCTION Requirement for all diving personnel to have a valid 1 st Aid and CPR card Requirement for 10 bell runs to the requirements for Bell/Saturation Diver Maximum Depth for Surface-Supplied Mixed Gas Diving Operations (HeO₂) 300 FSW (91.44 MSW) Section 5.0 UNDERWATER OPERATIONS: PROCEDURES, CHECKLISTS AND GUIDELINES Section 5.22 THERMAL EXPOSURES TO DIVING PERSONNEL New Section PROCEDURES FOR DIVING IN HOT WATER (Hot water is defined as water that is greater than 87 degrees F / 30.5 degrees C)

2 Section 5.25 VOICE COMMUNICATIONS ON STATION Use of external speakers should be considered when background noise has the capability of hampering communications to all key personnel as determined necessary during the conduct of the JHA. Section HAND JETTING ON PIPELINES PIPE MOVEMENT (New section added to address the hazards and procedures for pipeline movement hand jetting on live pipelines.) Section 5.39 HYDROGEN SULFIDE (H₂S) RECOMMENDED GUIDELINES Section 6.0 LIFE-SUPPORT EQUIPMENT: REQUIREMENTS, MAINTENANCE AND TESTING Section 6.2 Maintenance Records (New section added to address the hazards and procedures for working in H₂S environments.) Life support equipment shall have a unique identity assigned by the manufacturer or contractor, be easily visible, permanently affixed, and traceable to the equipment/maintenance log. Section HARNESSES e. Is equipped with adjustable leg straps. e. Is equipped with adjustable, permanently attached leg straps.

3 Section 6.5 HOSES Section GENERAL After the word GENERAL (i.e. all hoses associated with the breathing gas system) Changes for testing on all hoses with the breathing gas system Section BREATHING GAS HOSES (LP) After (LP) (i.e. deck whips and all other LP hoses associated with the breathing gas system) Section 6.9 GAUGES 3. (6 th bullet) Have a tag or label indicating amount of deviation (+/-) to the calibration standard Removed bullet containing text: Have a tag or label indicating amount of deviation to the calibration standard) Section VOLUME TANKS/AIR RECEIVERS 5. Be equipped with a relief valve as required by code of manufacturer. 12. Be hydro tested to 1.3 MAWP (ASME 2007 UG 99) every fifth year or after any repair, modification or alteration to the pressure boundary and stamped with the test date. 5. Be equipped with a relief valve as required by code of manufacturer and test at least annually. 12. Be hydro tested to 1.3 MAWP (ASME 2007 UG 99) every fifth year or after any repair, modification or alteration to the pressure boundary and marked with the test date. Section SURFACE-DIVING DECOMPRESSION CHAMBERS Re-numbered and added new 19: 19. Pressure test the chamber and associated piping annually to MAWP, as stamped on the chamber name plate, and record in the equipment log.

4 Section EMERGENCY EVACUATION SYSTEM (EES) 9. The EES shall be connected to the saturation system and pressurized to the shallower storage depth as a minimum, during all diving or decompression operations. 9. The EES shall be connected to the saturation system and a reserve supply of gas shall be available to press the EES to the deepest storage depth of the system during all diving or decompression operations. This procedure should be detailed in the emergency procedures for evacuation (see number 8). Section 8.0 VESSELS AND FLOATING PLATFORMS FOR DIVING OPERATIONS Section 8.2 LIVE BOATING Added definition: Live Boating is a diving technique where a single surface-supplied diver performs work underwater while his hose is being tended from the bow of a vessel which is manually operated by the vessel master and underway using its main propulsion system. Added ADDITIONAL CONSIDERATIONS: Due to the inherent risks of live boating operations, all other means of diving operations should be considered if possible. If live boating has been determined to be the method of diving to be executed, these additional considerations should be taken into account to ensure safe operations: Performance of a thorough risk assessment Performance of drills for diver recovery, loss of breathing media to the diver, and to test the vessel s emergency shutdown device Depending on the vessel, shaft rotation indicators, propeller guards, and other barriers or mechanical devices to prevent the diver and standby diver s umbilical from coming into contact with the

5 vessel s propellers should be considered for utilization An assessment of work to be performed, water depth, and the communications available on the vessel should factor into the manning levels of the crew Ensure that the dive supervisor has a clear line of sight of the diver s umbilical entering the water and diver s bubbles Ensure that there are direct communications between the captain, diving supervisor, standby diver, and tender Section MINIMUM REQUIREMENTS 1. Depth Limits The maximum depth limit for live boating operations is 170 fsw (51 m). Removed: Depth limits for live boating Section SURFACE-SUPPLIED DIVING FROM DYNAMICALLY POSITIONED VESSELS 1. Minimum Personnel One air or mixed-gas diving supervisor (NOT part of the dive rotation). One manifold operator Two divers One standby diver Three tender/divers One air or mixed-gas diving supervisor (NOT part of the dive rotation) One manifold operator (when mixed-gas [HeO₂] diving) One diver One standby diver Two tender/divers Two LARS/Winch Operators Surface-oriented Diving Surface diving off a DP vessel requires: Open-bottom bell with emergency onboard gas. Diver/tender at depth. Bell umbilical management and surface umbilical management plan (should be Surface diving off of a DP vessel requires: Open-bottom bell with emergency onboard gas. (For air or nitrox dives, a stage with emergency on-board gas may be substituted for an open-bottom bell.) A tending point on the surface or in-water

6 filed with JHA). Both divers to have access to surface and on-board gas. All umbilicals must be tethered to the main bell wire or secondary lift wire. from which the diver s umbilical can be securely tended. Tending can be achieved safely by employing: o a tender located on the vessel; o a tender located in a stage above the surface; o an unmanned in-water tending point (e.g. open-bottom bell, diver s hoop); o an in-water tender Bell umbilical management and surface umbilical management plan (should be filed with JHA) Diver (and if utilized, in-water tender) to have access to surface and on-board gas. All umbilicals must be tethered to the main bell wire or secondary lift wire The following requirements for surface diving operations are in effect only when the vessel is operating in the DP mode. DP mode is defined as whenever there is any form of motive power in operations, e.g., thrusters or propellers. The following requirements for surface and saturation diving operations conducted from a vessel are in effect only when the vessel is operating in the DP mode. DP mode is defined as whenever there is any form of motive power in operation, e.g., thrusters or propellers, which automatically maintains its position (fixed or a pre-determined track) by means of thruster force. The DP system consists of a power system, a thruster system, a DP-control system with the redundancy built in to maintain or restore its function, e.g. DP II or DP III. Diving operations conducted from a DP II of DP III vessel should not be considered Live Boating and may be performed at any time during the day or night, provided a thorough hazard assessment has been performed. Main and Standby Umbilical Lengths 1. Main umbilical must be 20 feet shorter 2. Standby umbilical must be 10 feet shorter 1. Main umbilical must be 16 feet shorter 2. Standby umbilical must be 10 feet shorter

7 Section 10.0 DIVING COMPLIANCE AUDIT PROCEDURES ADCI Consensus Standards - GAP Analysis Rev. 6 and 6.1 Section 10.3 Diving Contractor Audit Report The entire report was revised to accurately reflect changes in the previous sections Commercial Diver Training Program Audit Report New audit report was developed to specifically focus on commercial diver training programs (based on ANSI/ACDE and ADCI CS 6.1) Section 11.0 REFERENCE MATERIALS Section 11.1 Glossary of Terms * This GAP Analysis does not encompass all changes to the 6 th edition. New terms were added to establish consistency with other industry entities / organizations For a complete review of all of the changes that were made, a thorough reading of the document must be performed.