Regulation PM- 16.0: Diving Operations

Transcription

1 16.1 Purpose 16.2 Scope 16.3 Duties, Roles and Responsibilities The client responsibilities The diving contractor s responsibilities The diving supervisor responsibilities The diver responsibilities 16.4 Qualifications, Competence and Training of Drivers 16.5 Medical Fitness of Diver Certificate of Medical Fitness to Dive 16.6 Decompression Illness after Diving Air Decompression Policy 16.7 Work Planning Safe Practice Manual Pre-dive procedures Approvals/Prohibitions Approvals Prohibitions Emergency aid Launch and Recovery Procedures First aid supplies Planning and assessment Hazardous activities Employee briefing Equipment inspection Warning signal Diving Team Procedures during dive Diving Work Permit Authorization of Work Permit

2 Permit Book Permit Book Purchase Withdrawal/suspension of work permits Completion of work/closure of work permits Water entry and exit Communications Decompression tables Dive profiles Hand-held power tools and equipment Welding and burning Termination of dive Post-dive procedures 16.8 Diving Process Precautions Recompression capability Availability of compression chambers Diving records Surface-supplied air diving Procedures Mixed-gas diving Procedures 16.9 Risk Management Process Risk Assessment Five Steps to Risk Assessment Job Safety Analysis (JSA) Revising the JSA Potential Hazards Recommend Safe Procedures and Protection Assign Responsibility Personnel Involved Environmental Considerations Equipment service and maintenance General Air compressor system Breathing-gas supply hoses Buoyancy control Compressed gas cylinders Decompression chambers Gauges and timekeeping devices Masks and helmets Oxygen safety

3 Weights and harnesses Emergency and Contingency Plans Emergency Plans Contingency Plan Accident Reporting General Requirements` Duty to Notify Investigation of Accidents Accident/Incident Records EHS Inspections References

4 16.1 Purpose To provide guidance to be followed when contracting and / or approving commercial diving operations to take place within PCFC Ports waters and ensure compliance with Local and international standards and requirements Scope 1. Diving is One of the most strenuous activities in ship repair which requires special skills and Hazards and Risk are greater and requires proper and constant supervision also Demands physically and mentally fit to carry out the activity 2. This Regulation applies to all types of underwater work within port limits involving commercial diving. 3. These regulations are applicable to all diving companies entering, using or making use of facilities belonging to Dubai World. Neither non-possession nor ignorance of these regulations will be considered a reason of non-imposition of a penalty for violation of these regulations. 4. The Competent Department (EHS) is empowered to enforce these regulations to ensure safe and efficient operation within Dubai world premises. 5. Nothing in these Regulations shall be construed as over-riding or contradicting to: The Laws of the UAE The provisions of international, national or regional regulations as applicable. The Trakhees EHS reserves the right at any time, to alter, change or amend any or all of the provisions contained in these regulations with or without prior notice. The revised EHS regulations supersede earlier issued EHS Regulations. The responsibility for compliance is placed upon employers and employees as defined in these regulations. Relevant international Regulations & Guidelines such as IMCA, ADCI, Health & Safety Executive (HSE), OSHA, NFPA, IMO, standards will be the baseline/ reference line for any requirements that have not been referred in this booklet. 6. Without limiting the actions of the competent department in the protection of Health, Safety & Environment, the competent department is empowered to Issue appropriate enabling regulations, guidelines and codes of practice for the safe conduct of work and also to amend them where situation & context warrant inducing compliance. Inspect all work places, take samples or photographs and issue directions/instructions to ensure compliance with Health, Safety and Environmental requirements Issue Correction notices/warning letters and/or Penalties were deemed required. Prepare and execute education/training/awareness programs and / or recommend programs in Health & Safety

5 Advise Local/Federal Government Departments (where applicable) on status of non-compliant companies/licensees to enable necessary actions 7. All Diving companies have the right to choose the convenient diving association for them to become a member in it along with their staff, which they deem appropriate for their business, preferably The International Marine Contractors Association (IMCA) ASSOCIATION OF DIVING CONTRACTORS INTERNATIONAL (ADCI) 8. This Code for Commercial Diving and Underwater Operations will be effective from 1 st of March Duties, Roles and Responsibilities 1. It is a duty of any person, including the managers of diving companies, who has responsibility for or control over a diving operation to ensure that diving is reasonably practicable, safe and is carried out in a safe and healthy manner. 2. The following summarizes the responsibilities of various parties directly involved in an industrial diving operation, diving contractor, diving supervisor and diver who are required to comply with the duty imposed The client responsibilities 1. Agreeing to provide facilities and extend all reasonable support to the diving supervisor or contractor in the event of an emergency. Details of the matters agreed should form part of the planning for the project; 2. Considering whether any underwater or above-water items of the plant or equipment under their control may cause a hazard to the diving team. Such items include: 3. Vessel/floating structure propellers and anchor wires 4. Underwater obstructions 5. Pipeline systems under pressure test or with a pressure lower than the pressure at the diver work location 6. Subsea facilities 7. Water intakes or discharge points causing suction or turbulence 8. Gas flare mechanisms that may activate without warning 9. Equipment liable to start operating automatically

6 10. Appropriate isolations and barriers (mechanical, electrical, optical, hydraulic, instrumentation isolations and barriers) 11. The diving contractor will need to be informed of the location and exact operational details of such items in writing and in sufficient time to account for them in the risk assessments; 12. Ensuring that sufficient time and facilities are made available to the diving contractor at the commencement of the project in order to carry out all necessary site-specific safety and familiarization training; 13. Ensuring that other activities in the vicinity do not affect the safety of the diving operation. They may, for example, need to arrange for the suspension of supply boat unloading, overhead scaffolding work, bunkering etc.; 14. Ensuring that a formal control system, for example, a permit-to-work system, exists between the diving team, the installation manager, Port s safety officer and/or the master; 15. Providing the diving contractor with details of any possible substance likely to be encountered by the diving team that would be a hazard to their health, e.g. drill cuttings on the seabed. They will also need to provide relevant risk assessments for these substances. This information should be provided in writing and in sufficient time to allow the diving contractor to carry out the relevant risk assessments; 16. Providing the diving contractor with information about any impressed current system on the work site or in the vicinity and details of the system. This information should be provided in writing and in sufficient time to allow the diving contractor to carry out the relevant risk assessments; 17. Keeping the diving supervisor informed of any changes that may affect the diving operation, e.g. vessel movements, deteriorating weather etc The diving contractor s responsibilities 1. A diving project plan; 2. An overall quality management system which includes a safety management system; 3. Appropriate insurance policies ensuring full compensation for divers involving accidents at work; 4. Risk assessments for mobilization/demobilization, the operation of the equipment and work tasks to be undertaken and the contingency/ emergency plans; 5. A management of change procedure; 6. A safe and suitable place from which operations are to be carried out; 7. The diving contractor shall ensure that there are sufficient people with suitable

7 8. Competence to carry out safely and without risk to health both the diving project and any action (including the giving of first-aid) which may be necessary in the event of a reasonably foreseeable emergency connected with the diving project. 9. Suitable plant and equipment supplied, audited and certified in accordance with the relevant IMCA or ADCI documents, and including equipment supplied by diving personnel; 10. Plant and equipment correctly and properly maintained; 11. A suitable plan which includes emergency and contingency plans; 12. Sufficient personnel of the required grades in the diving team; 13. Personnel holding valid medical and training certificates and qualified and 14. competent in accordance with the IMCA or ADCI Training, Certification & Personnel 15. Competence tables; 16. Suitable site-specific safety and familiarization training provided to all members of the dive team; 17. Adequate arrangements to ensure that the supervisor and dive team are fully 18. briefed on the project and aware of the content of the diving project plan and the dive plan; 19. Project records kept of all relevant details of the project, including all diving 20. operations; 21. A procedure for near-miss and incidents/accidents reporting, investigation and follow-up; 22. Adequate arrangements for first aid and medical treatment of personnel; 23. Clear reporting and responsibility structure laid out in writing; 24. Diving supervisors appointed in writing and the extent of their control documented; 25. The latest approved version of the diving contractor documents and plans at the work site and being used; 26. All relevant regulations/standards complied with as mentioned earlier, such as this code and IMCA or ADCI The diving supervisor responsibilities

8 1. They should satisfy themselves that they are competent to carry out this work and that they understand their own areas and levels of responsibility and who is responsible for any other relevant areas. Such responsibilities should be contained in the relevant documentation. 2. They should also ensure that they are in possession of a letter from the diving contractor appointing them as a diving supervisor. Have adequate knowledge, training and familiarization with all life-support and ancillary equipment designated to the diving operations. 3. Be fully cognizant of all relevant governmental regulatory agency regulations that apply to the diving operation and the diving mode employed, and the employer s basic safe practices/operations manual. See that all rules and regulations are followed. 4. They will need to make sure that the personnel they are to supervise are competent to carry out the work required of them. They should also check, as far as they are reasonably able, that these personnel are fit and in possession of a valid medical certificate of fitness; 5. While actually on duty, be in immediate control and available to implement emergency procedures. The diving supervisor is not permitted to dive unless another qualified diver is present who has also been appointed and designated to assume responsibility. 6. The diving supervisor must also ensure, prior to commencing a diving operation, in addition to parties directly involved in the diving operation that masters of craft, pilots 7. of submersibles, harbour masters, managers of off shore installations, pipelines, 8. Civil engineering sites, inland waterways, and all persons responsible for anything that affects the diving operation are advised that diving or underwater operations are to be undertaken. 9. They will need to check that the equipment they propose to use for any particular operation is adequate, safe, properly certified and maintained. They can do this by confirming that the equipment meets the requirements set down in this code. They should ensure that the equipment is adequately checked by themselves or another competent person prior to its use. Such checks should be documented, for example, on a pre-prepared checklist, and recorded in the operations log for the project; 10. They will need to ensure that all possible foreseeable hazards have been evaluated and are fully understood by all relevant parties and that, if required, training is given. In addition, prior to commencement of a project an on-site job safety analysis (JSA) needs to be carried out. If the situation has changed, further risk assessment and management of change will need to be undertaken. They will need to ensure that the operation they are being asked to supervise complies with the requirements of this code and IMCA or ADCI code.

9 11. Personally inquire if all personnel on the dive team are qualified and physically able to perform tasks assigned. Make an assessment of the physical condition of the divers prior to each dive to determine if any physical impairment is present that would be detrimental to the diver s health and safety in the water or under hyperbaric conditions. 12. They will need to establish that all involved parties are aware that a diving operation is going to start or continue. They will also need to obtain any necessary permission before starting or continuing the operation, normally via a permit-towork system from port's safety officer 13. The supervisor will need to have clear audible and, if possible, visual communications with any personnel under their supervision. For example, a supervisor will be able to control the raising and lowering of a diving bell adequately if there is a direct audio link with the winch operator, even though the winch may be physically located where the supervisor cannot see it nor have ready access to it. 14. Ensure diving operations are carried out from a suitable and safe location on the surface 15. The supervisor will need to have direct communications with any diver in the water at all times, even if another person needs to talk to, or listen to the diver 16. Be aware of the procedures to follow to obtain medical support in the event of an accident, either diving or non-diving related. Ensure a two-way communication system is available at the dive location to obtain emergency assistance. 17. Develop or modify and produce pre- and post-dive checklists for the operation. 18. Ensuring that proper records of the diving operations are maintained The Diver s responsibilities: 1. Inform the diving supervisor if there is any medical or other reason why they cannot dive. 2. Ensure that their personal diving equipment is working correctly and is suitable for the planned dive; 3. Ensure that they fully understand the dive plan and is competent to carry out the planned task; 4. Comply with all commands and instructions from the diving supervisor or designated diving person in charge (DPIC) during the conduct of diving operations. 5. know the routine and emergency procedures;

10 6. Ensure that the deepest depth attained during the dive has been established before the ascent. 7. Safely transition from the water to the decompression chamber without avoidable delay. 8. Report any equipment faults, other potential hazards, near misses or accidents; 9. Report any medical problems or symptoms that they experience during or after the dive; 10. Check and put away personal diving equipment after use; 11. Keep their logbooks up to date and presenting it for signing by the diving supervisor after each dive. 12. Maintain a high level of physical fitness. 13. Act as a standby diver or tender when directed to do so. Be capable and qualified to carry out all of the duties and responsibilities of the diver as set forth above. (The standby diver is the individual possessing the required training and experience to enter the water at the diving station in order to render assistance to a stricken diver) Qualifications, Competence and Training of Divers 1. Basically, any diver (including standby diver and extra diver) or other diving team member who is competent to take part in an industrial diving operation should have the training and experience necessary to perform the assigned task in a safe manner. Regarding competence to dive in a particular diving mode, a diver should have training and experience in various aspects of the respective mode, specified in IMCA or ADCI codes. Documentary proof of competence can be a certificate, obtained by training or assessment of experience up to international standard. 2. The training and experience in general terms should include: Technique of the required diving mode; The assigned underwater work; The use of tools, equipment and system relevant to the assigned task; and Safe practices and emergency procedures. 3. Member companies of the ADCI or IMCA employ persons to perform as certified commercial divers in the following categories: Entry-level tender/diver. Air diver. Mixed-gas diver. Bell /Saturation diver. Air-diving supervisor. Mixed-gas diving supervisor.

11 Bell /Saturation-diving supervisor. Bell /Saturation technician. Life-support technician. Deck crew/riggers. 4. Competence is not the same as qualification. A person who has a particular qualification, such as a diver training certificate, should have a certain level of competence in that area but the diving contractor and the diving supervisor will need to make sure that the person has the detailed competence necessary to do the specific task required during the particular diving operation. 5. The different members of the diving team will require different levels and types of competence and qualifications as mentioned in ADCI or IMCA codes. 6. Diplomas issued by a civilian or military educational organization are for the purpose of attesting that an individual has received the necessary basic formal training to enter a vocational field. Such instruments should not be used to verify that the graduate can perform in the field without further on-the-job training and experience with actual demonstration of competence 16.5 Medical Fitness of Diver Certificate of Medical Fitness to Dive 1. In general any person, who is likely to be subjected to pressure greater than atmosphere, must be medically fit. A diver must be medically examined and should be in possession of a Certificate of Medical Fitness to Dive. A valid Certificate of Medical Fitness to Dive should be issued by a medical practitioner must be with special experience in underwater or occupational medicine. 2. The certificate of medical fitness to dive is a statement of the diver s fitness to perform work under water and is valid for as long as the doctor certifies, up to a maximum of 12 months. 3. The certificate should contain the details specified in IMCA or ADCI codes and should be entered into the Diver's Log Book. A new certificate of fitness should be obtained if the diver has been sick for a continuous period of 10 days or more, or requires hospitalization of 72 hours or more. 4. It is very important that a diver should be physically and psychologically fit before commencing a diving operation. Diving should not be undertaken if the person is suffering from any illness. 5. A minimum amount of medical equipment will need to be at a diving site to provide first aid and medical treatment for the dive team. First aid kits should be held in the diving bell, chambers and hyperbaric rescue facility. In addition specialized medical equipment needs to be held at the dive site. The minimum amount will depend on the type of diving, but a standard list has been agreed in ADCI or IMCA codes

12 16.6 Decompression Illness after Diving 1. Divers are at risk of decompression illness (DCI) after diving. It is difficult to treat decompression illness if recompression facilities are not immediately available. The diving project plan will therefore need to specify that divers remain close to suitable recompression facilities for a set time following a dive Air Decompression Policy 1. It is the Port policy not to plan or perform decompression diving. No exceptional exposure diving will be planned. If an emergency situation occurs where the nodecompression limit is exceeded due to entrapment, entanglement or timing device failure, in-water decompression is permitted to avoid injury to the diver. Standard Decompression. Tables shall be used to calculate decompression depths and times. Normal diving procedures shall be conducted in the Unlimited /No- Decompression. Repetitive diving procedures will be followed carefully; each diver shall always know his repetitive group and last time of reached surface, so that surface intervals can be quickly determined for daily dive planning. The dive team supervisor shall ensure that all divers are trained on the use of standard and repetitive diving procedures. 2. For dives that are shallower than 10 metres with planned in-water decompression not exceeding 20 minutes, all diving companies must have a decompression chamber available in Dubai for any emergency, but for example if two diving companies share in one decompression chamber, so in case of illness (DCI) of any diver, EHS has the right to cease the diving activity for both companies until the patient is treated. 3. Any diver showing signs or symptoms that cannot be attributed to any other cause must be treated for decompression sickness. Unless the treatment is taken care of by a medical specialist, the diving medic is responsible for carrying out first aid and treatment work, and where necessary should consult the diving contractor's medical adviser Work Planning Safe Practice Manual 1. This standard requires that the employer develop and maintain a safe practices manual that includes information and procedures relating to the safety and health of the diveteam members. The manual must contain a copy of the commercial diving operations standard and a statement of the employer s policy for ensuring compliance with the standard. The manual must be at the dive location and available to all dive-team members. 2. The safe practices manual must provide a written operational procedure for each diving mode used by the employer. EHS shall review the manual to determine if it contains safety procedures and checklists for diving operations, assignments and responsibilities of the dive-team members, equipment procedures and checklists, and emergency procedures (at a minimum: fire, equipment malfunction or failure, adverse environmental conditions, and medical illness and injury). The safe practices manual guidance and procedures must be supplemented with additional information specific to each diving operation.

13 3. The manual should consist of documents such as: Dive site description Diving mode selection Surface and underwater conditions and hazard analysis Air supply requirements Diving equipment, systems and required support equipment Dive team assignments and responsibilities No-Decompression limits Emergency procedures (accident/near-accident and incident notification, reporting and investigation procedures) Evacuation procedures and recompression treatment procedures A management of change procedure Adverse weather working policy Diving/operating/maintenance procedures Mobilization/demobilization plans Step-by-step work procedures Contractors manuals (submitted one time only) and documentation Code, standards and reference documents Communication and responsibility organigrams Equipment audit reports and certification Permits-to-work Minimum gas/breathing mixture requirements Any location-specific hazards identified by the client Suitable emergency and contingency plans, including: lost bell recovery; rescue of divers from a habitat; and hyperbaric evacuation for surface orientated and saturation diving operations. These should be agreed by all relevant parties Prior to commencement of the project a safety management system interface document should be in place, which reflects and defines the safety management interface between client, diving contractor, sub-contractors and third parties. The document should include the relevant documentation and management systems of all parties involved as well as the responsibilities, communication protocol, emergency response, operational procedures and practices for managing health and safety during the project Pre-dive procedures 1. The provisions of this section must be followed by the employer for all diving modes, with the designated person-in-charge responsible for overall compliance with these provisions and briefing dive-team members Approvals/Prohibitions Approvals 1. Prior to the commencement of any diving operation within PCFC Trakhees ports limit, written permission shall be obtained from the

14 EHS department, DPW Harbour Master office and other concerned DP World departments Prohibitions 1. Diving operations shall not be undertaken in areas designated as prohibited, restricted unless duly authorized by EHS department. Details of prohibited diving areas shall be obtained from PCFC Trakhees Ports Harbour master office. 2. Night time diving work/ operations or activities is not permitted without prior permission from the EHS and other concerned DPW departments Emergency aid 1. Diving Supervisor shall determine whether the emergency aid list is complete and is available to all dive-team members. This list must contain the telephone or call numbers of: the nearest operational decompression chamber (if a chamber is not required at the dive location); accessible hospital(s); the available physician(s); the means of transportation available for use in the event of an emergency; and the nearest DCD Coordination Centre Launch and Recovery Procedures 1. A diving contractor should ensure that the launch and recovery system(s) used for diving operations have been tested and certified by a competent person. 2. It is the responsibility of the diving supervisor to ensure that a safe launch/recovery procedure exists that is understood by all members of both the diving and the support installation crews. 3. The procedure should progress in smooth, logical steps and be designed so that all personnel involved in the operation are fully aware of the situation at all times First aid supplies 1. Diving Supervisor shall determine whether a first-aid kit is available at the dive location. The first-aid kit provided at the dive location must be appropriate for the diving operations, and approved by a physician. If it is to be used in a pressure chamber, such as a decompression chamber or a diving bell, the first-aid kit must be suitable for use under hyperbaric conditions because some items in a standard kit (such as bottles of liquid, mercury thermometers, or ammonia ampoules) may burst under pressure. A bag-type resuscitator with a transparent hose and mask (so that the operator can see that the diver s air passages are clear) Planning and assessment 1. This provision requires the employer to include in the planning of a diving operation an assessment of the safety and health features of the diving mode, surface and underwater conditions and hazards, primary and reserve breathing-gas supply, thermal protection, diving equipment and systems, dive-team assignments and the physical fitness of dive-team

15 members (including any impairments known to the employer), repetitive dive designation or residual inert-gas status of divers, decompression chamber procedures (including any altitude corrections), and emergency procedures. The employer typically assigns this planning task to the designated person-in-charge. While conducting the planning and assessment, the employer must consider all hazards involved and ensure compliance with other standards Hazardous activities Hazards encountered during diving operations such as weather, water temperature, current, and bottom conditions must be recognized and taken into account during the planning and execution of the operation. When other operations being conducted in the vicinity (such as dredging, marine traffic, or movement of materials directly above the dive location and/or area of the dive) are likely to interfere with the diving operation, the diving supervisor shall plan the operation only after appropriate coordination with persons responsible for the other activities so that any hazard exposures to the diver(s) or other dive-team members will be eliminated. Failure to plan for such conditions, or to coordinate activities, shall be a basis for a citation Employee briefing The employee briefing is usually conducted by the diving supervisor just prior to the diver(s) entering the water. The dive-team members shall be briefed on the tasks to be undertaken, safety procedures for the diving mode, any unusual hazards or environmental conditions likely to affect the safety of the diving operation, and any modifications to operating procedures necessitated by the specific diving operation. The diving supervisor also must advise the dive-team members of the procedures for reporting physical problems or adverse physiological effects during and after the dive. It is particularly important that the designated person-in-charge inquire into each dive-team member s current state of physical fitness before making assignments Equipment inspection 1. The equipment-inspection requirement prior to each dive relates directly to the equipmentchecklist requirement in the safe practices manual. The breathing-supply system, including reserve breathing-gas supplies, masks, helmets, thermal protection, and diving bell-handling mechanisms (when appropriate) must be inspected prior to each diving operation. Pre-dive equipment inspection items are those that are critical for the safety of the dive operation. For surface-supplied diving, the breathing-supply system equipment inspection includes diving umbilicals Warning signal The following paragraphs describe the two distinctions made in the requirements for displaying the warning signal for commercial diving operations:

16 Requires the warning signal to be displayed when diving from surfaces other than vessels such as wharves, piers, pilings, jetties, fixed caissons, levees, dikes, dams, breakwaters, and artificial islands (secured to the sea floor). The warning signal is a rigid replica of the international code Flag A, and must be at least one meter (3-3½ ) in height (see Appendix F of this instruction). International Code Flag A : Alfa; Diver below (when stationary); Keep clear Diving Team Dive team shall comprise of minimum (5) members namely one trained supervisor, one trained dive medic, one dive tender, one standby diver and the diver performing the work. Where, the diving work requires more divers in water, and then dive tenders shall be increased accordingly Procedures during dive Diving Work Permit Authorization of Work Permit A Permit to Work (PTW) system can only be authorized by an Approved Signatories, as defined below; 1. Issuing Authority Vessel Husbandry Jobs (Jebel Ali, Port Rashid, and Port Hamriya): Master of the Ship if repair works in ports For Diving Operation for Berth areas, Projects and Ship Yards: Trakhees- EHS Approved Project Manager/Project Engineer/Safety Officer. 2. Performing Authority - EHS approved Diving Supervisor 3. Competent Authority - Representatives from Trakhees-EHS Ports Department. 4. No authorized signatory can sign for both the issuing authority and the performing authority. 5. Work Permit Validity Period

17 6. Diving permit is valid for a period specified on the permit only. However the maximum validity shall not extend more than 12 hours. 7. Prior to the commencement of any diving operation within PCFC Trakhees ports limit, written permission shall be obtained from the EHS department, DPW Harbour Master office and other concerned DP World departments. 8. Night time diving work/ operations or activities is not permitted without prior permission from the EHS and other concerned DPW departments Permit Book 1. The permit shall be prepared in triplicate and distributed as follows: Original (White) First copy (Pink) Second copy (Blue) : Work Site/ Location of Work. : Issuing Authority : Port Control/ Harbour Master/ Marine department. 2. Each permit book contains 25 permits and each permit consists of 6 papers (including the colour copies for distribution) Permit Book Purchase 1. EHS approved Diving Company shall purchase the permit book from EHS. The steps to be followed for the permit book purchase is as stated EHS approved Diving Company shall request to the EHS ports and maritime section officer via (ehs.ports@trk.pcfc.ae) for generating the payment advice for the no of permit books as required. EHS officer shall raise the payment advice and send to the EHS approved Diving Company accordingly. Upon receipt of the payment advice, the Diving Company representative shall proceed to payment counter at EHS Main office at Jebel Ali and close out the payment and collect the permit books form the cashier Withdrawal/suspension of work permits 1. This diving permit may be suspended, withdrawn or cancelled at the sole discretion of PCFC Trakhees EHS & DPW Harbour Master. Any dive work/ operations or activities found to breach any EHS or Port related requirements may result in permit being suspended, withdrawn and/or cancelled. 2. All Permits shall be suspended and Re- Issued in case the Vessel Changes its Location.

18 3. New Diving Permit should be issued whenever there is more than 50% change in originally assigned diving crew Completion of work/closure of work permits 1. On completion of the work the Performing Authority shall withdraw his men, material, machinery, clean the area and make the equipment/area safe to commission the operation. Then he will sign the permit requesting Issuing Authority to cancel/close the permit. 2. Issuing authority shall check equipment/area/site and ensure that the maintenance/contractor personnel have left equipment/area/site in safe condition and sign the permit as closed. The cancelled permit shall be stored for record keeping for a retention period of 2 months Water entry and exit 1. A means capable of supporting the diver (such as an in water stage or ladder) while entering or exiting the water is required. If it is a fixed structure, such as a ladder, it must extend below the water sufficiently to allow adequate diver access and support (a minimum of one meter is recommended). Portable ladders should be secured to maintain stability and to prevent pinch points. The employer also must provide a means for assisting an injured diver from the water to the surface or into a diving bell (such as an in water stage, stokes basket, or harness) Communications 1. Effective communications are essential to ensure that all personnel directly involved in operations are made fully aware of the work being undertaken and that during operations all parties are kept aware of the status of any unusual situation. 2. An operational two-way voice communication system is required for communications between each surface-supplied air diver or mixed-gas diver and a member of the dive team at the dive location. Also, an operational, two-way communication system (such as a cell phone, marine radio, or e- mail) must be available for obtaining emergency aid. 3. Communications between the diving team and any other relevant personnel (such as marine crew, DP operators, crane operator) are important for safe and efficient operation. 4. Effective communications are vital to the safety and success of any operation. To ensure this the diving supervisor needs to be given access to the communications service of the vessel or fixed/floating structure on which operations are based, as and when required. 5. If communications are lost, terminate the dive and use line pull signals for diver s ascent to surface. 6. All such communications will need to be recorded, and the recording kept for minimum 24 hours before being erased. If an incident occurs during the dive, or becomes apparent after the dive the communication record will need to be retained until the investigation has been completed.

19 7. The diving craft, when and where used, shall be equipped with VHF radio (or) radio communication equipment and a fully charged mobile number to maintain a continuous manned listening watch on Port working channel while divers are in the water Decompression tables 1. This paragraph requires that decompression, repetitive, and no-decompression tables (as appropriate) be available at the dive location. These tables serve as guides for determining decompression and no-decompression profiles for the diving operation Dive profiles 1. A written record called a depth-time profile (including any breathing-gas changes, when appropriate) must be maintained for each diver during the dive, including decompression. This record aids the diving supervisor (or the dive-team member managing the decompression interval) in implementing the planned dive schedule and decompression interval, and making necessary adjustments in the decompression schedule if changes occur in planned bottom times or depths. The dive profile information may be recorded by whatever means and in whatever form the employer prefers, provided that the information is maintained accurately and completely Hand-held power tools and equipment 1. The standard does not require hand-held electric power tools used underwater to have a pressuresensitive manual control switch. However, when electrically powered hand-held tools are used underwater, and the source of power is supplied from the dive location, the hand-held power tool shall not be supplied with power until requested by the diver. When the diver has finished work with the hand-held electric-power tool, the power to the tool will be de-energized from the dive location 2. With respect to custom-made equipment or related installations which are designed, fabricated for, and intended for use by a particular customer, if determined to be safe for its intended use by the manufacturer on the basis of test data which the employer keeps and makes available for inspection to the authority representatives Welding and burning 1. Where the dive work/ operations or activities involves use of naked flame, then hot work permit and gas free certificate shall be obtained from EHS approved Survey Company prior to the commencement of job. 2. A current supply switch must be available to interrupt the current flow to the welding or burning electrode. The switch shall be tended by a dive-team member in voice communication with the diver performing the welding or burning. The disconnect switch must be in the open position unless the diver is actually welding or burning The diving supervisor shall determine that the welding machine s frame is properly grounded by means of solid, metal-to-metal contact on all ship s structure and/or shore ground connections. The ground connection also may be checked with a meter. The diving supervisor also shall determine that the cables, electrode holders and connections are insulated to prevent overheating or breakdown. The employer must provide insulated gloves for the diver s protection 3. Prior to welding or burning on closed compartments, structures, or pipes that contain a flammable vapour or in which a flammable vapour may be generated by the work, they shall be vented,

20 flooded, or purged with a mixture of gases that will not support combustion. Closed compartments as used in this paragraph, means any space that is enclosed by bulkheads and overheads (i.e., walls and ceilings), including large diameter pipes and other structures that, because of poor ventilation, could hold or contain a flammable gas or vapour. Prior to hot work, the employer must remove from closed compartments all flammable gases and vapours by ventilating, flooding, or purging with an inert-gas that will not support combustion. Venting alone is not sufficient unless it removes the flammable gases from the compartments. Closed compartments, structures, and pipes already under flow, as in hot tapping operations, meet the requirement for being flooded. 4. A flooded compartment is not necessarily safe for cutting and welding. During the cutting and welding process, oxygen (from the diver s welding/cutting O2 supply hose), hydrogen (electrolysis generated by the work process), and other gases may collect in the overhead of a compartment, if it is not properly vented (made gas free). Should the diver cut or weld into the area where the gas collects, then a serious explosion can occur. By properly venting the space, gas will not collect and the space will remain flooded. When making vertical cuts/welds, start high (shallow water depth) and finish low (deeper water depth) Termination of dive 1. The diving supervisor is responsible for determining when a dive shall be terminated. Termination means ending the working interval of a dive. However, it may still be necessary to complete the decompression procedures (when required). The working interval of a dive must be terminated when: the diver so requests; the diver fails to respond correctly to instructions from the dive team (indicating a possible disability of the diver or an equipment failure); communications with the diver are lost and cannot quickly be re-established (either between the diver and the dive location or diving bell, or between the diver and the designated person-in-charge and the skipper of the support vessel for live boating operations); or the diver begins to use the reserve breathing gas. Any of these situations requires termination of the dive. The decompression interval should not be omitted after termination of the dive if doing so would add to the diver s overall physical risk, unless the circumstances make in water decompression impossible or present a greater physical risk to the diver. 2. Competent Authority has the right to Terminate the operation as deemed necessary during the routine inspections Post-dive procedures Precautions 1. At the completion of a dive, the employer must: thoroughly check the physical condition of the diver; instruct the diver to report any physical problems or adverse physiological reactions (including decompression sickness symptoms); advise the diver of the location of the nearest decompression chamber; and alert the diver to the hazards of flying too soon after the dive. 2. As a general rule, a diver should wait 12 hours before flying for air diving not involving decompression, and wait 24 hours for air dives involving decompression and all mixed-gas diving. Decompression sickness effects can occur for some time after the completion of the dive, and sleep can conceal the onset of decompression sickness. Consequently, after a dive deeper than 100 fsw, a dive that requires decompression, or after any dive using a mixed-gas breathing mixture, the employer is required to instruct the diver to remain awake and in the vicinity of the decompression chamber at the dive location for at least one hour after the dive, including one hour

21 after any decompression or diving medical treatment (such as medical treatment for decompression sickness or arterial gas embolism) Recompression capability 1. Decompression chambers provide the only effective therapy (i.e., recompression) for decompression sickness and arterial gas embolism. A decompression chamber also can reduce a diver s underwater exposure since chambers may be used to decompress the diver on the surface (i.e., procedures known as surface decompression on air and surface decompression on oxygen ). 2. The decompression chamber must be dual-lock (i.e., having two compartments) so that supplies and personnel may be transferred into and out of the main compartment. The chamber also must be multi-place (i.e., the main compartment must be large enough for two persons), and must be located and ready for use within 5 minutes of the diver s exit from the water. 3. The decompression chamber must be equipped with: a pressure gauge for each inner lock and outer lock; a built-in breathing system (BIBS) with at least one mask for each chamber occupant; two-way voice communication between the chamber occupant(s) and a dive-team member at the dive location who is monitoring the decompression; a view port; and sufficient illumination to observe the chamber occupant(s). 4. Treatment tables, oxygen or other appropriate treatment gas, and sufficient gas to pressurize the decompression chamber during the treatment period must be available at the dive location. In addition, a competent dive-team member must be available during the dive, and for one hour afterward, to tend and operate the chamber. 5. For each dive in which decompression sickness is suspected or symptoms are evident, the following additional information must be recorded and maintained: a description of decompression sickness symptoms (including depth and time of onset); and a description of treatment results. Employers shall maintain a log of recordable work-related injuries and illnesses. The purpose of this requirement is to document recordable illnesses, including incidents of decompression sickness, even when the initial symptoms include such manifestations as skin itch, slight joint cramps, and slight numbness of the extremities. Although seemingly innocuous, these symptoms are recognized and suspected as mild forms of decompression sickness. Symptoms and treatments must be recorded similarly to any other injury or illness Availability of compression chambers 1. For dives that are shallower than 10 metres with planned in-water decompression not exceeding 20 minutes, the diving contractor should identify the nearest suitable operational two-person, twocompartment chamber. Under no circumstances should this be more than 6 hours travelling distance from the dive site; 2. For dives between 10 and 50 metres with planned in-water decompression not exceeding 20 minutes, the diving contractor should assess the risk of DCI and likelihood of a diver requiring emergency recompression. This should be based on the depth and duration of the planned dives. The assessment should also consider factors which may increase the risk of DCI such as water temperature, type of work, and the number of dives/ascents. If the assessment demonstrates a significant risk of DCI a suitable, operational, two-person, two-compartment chamber should be provided for immediate use at the site of the diving project. If the assessment demonstrates

22 relatively low risk of DCI, the diving contractor should identify the nearest suitable operational twoperson, two-compartment chamber. Under no circumstances should this be more than 6 hours travelling distance from the dive site; 3. For dives with planned in-water decompression stops greater than 20 minutes the diving contractor should provide a suitable, operational, two-person, two-compartment chamber for immediate use at the site of the diving project. The diver should be able to leave the water quickly and easily and be pressurised within the chamber to the appropriate recompression pressure as defined by the time in the decompression schedule being used. The controls of a compression chamber should only be operated by people competent to do so. Such competence will be achieved by a combination of training and experience. The degree of supervision provided should reflect the experience of the operator Diving records 1. The record maintained for each diving operation must include: the names of the dive-team members, including the designated person-in-charge; the date, time, and location of the dive; the diving mode(s) used; a general description of the work performed; the approximate underwater and surface conditions; and the maximum depth and bottom time for each diver. The following additional information is required for dives outside the no-decompression limits, deeper than 100 fsw, or using mixed-gas: depth-time and breathing-gas profiles; decompression tables (including any modifications); and, for repetitive diving, the elapsed time since the last pressure exposure (if less than 24 hours) or the repetitive dive designation for each diver Diving Process Surface-supplied air diving Procedures 1. Each diver is required to be continuously tended while in the water. 2. When diving is conducted in enclosed or physically confining spaces, another diver shall be stationed at the underwater point of entry. The diver stationed at the underwater point of entry is required in addition to any standby diver at the dive location. 3. Requires each diving operation have a primary breathing-gas supply that is sufficient to support divers for the duration of the planned dive, including decompression. 4. For dives outside the no-decompression limits, each diver must: be tended by a separate dive-team member; have a standby diver available at the dive location while the diver is in the water; and have a diver-carried reserve breathing-gas supply, except when heavy gear is worn. 5. A reserve breathing-gas supply is required at the dive location for dives outside the no-decompression limits. The reserve breathing-gas supply required at the dive location must be on-line and ready for use, and its source must be independent of the primary breathing-gas supply. The