Confined Space Entry Procedure Awareness Presentation

1. Confined Space Entry Procedure Awareness Presentation Rev. 0 Doc Control No: HQS-016-17-002

2. Learning Objectives • To provide awareness to all Songa and 3rd party personnel with respect to Songa Offshore procedure on Confined Space Entry. • To provide a forum for discussion by enabling personnel to raise any concerns and/or opportunities for further improvement.

3. References • HQS-017-02-010 Confined Space Entry Procedure • HQS-017-21-002 Confined Space Entry Checklist & Register

4. Web-based QSMS Corporate Level • The HQS-017-02-010, Confined Space Entry Procedure is located on Level 4 of the QSMS. • The HQS-017-21-002, Confined Space Entry Checklist and Register is located on Level 7 of the QSMS. Regional Level Rig Level

5. What is a Confined Space? • Confined space:means an enclosed or partially enclosed space that: • Is not designed or intended for human occupancy except for the purpose of performing work. • Has restricted means of access and egress. • May become hazardous to an employee entering it due to: • Its design, construction, location or atmosphere, • The materials or substances in it, or • Any other conditions relating to it.

6. Examples of Confined Spaces • Examples of confined spaces onboard drilling rigsare: • Barite / Cement tanks • Mud pits • Ballast and Void tanks • Bulk liquid storage • Sand trap under shakers • Drill / Pot water tanks • Double bottoms of the vessel

7. Key Hazards Key hazards associated with confined space entry are: • Oxygen deficiency - welding fumes, painting, chemical reaction such as metal rusting. • Oxygen excess -may be caused by a leaking oxygen supply fitting such as in welding, cutting or heating equipment. • Noise, which may be caused by hammering or the use of equipment within the confined space. • Temperature Extremes; where appropriate ventilation or appropriate clothing is not supplied or worn. • Falls, trips and slips – during entry, exit or whilst within the confined space.

8. Key Hazards (cont.) • Explosion or fire • Electrocution • Operation of moving equipment • Uncontrolled introduction-water, gas or other liquid. • Injuryfrom tools or equipment being lowered / lifted from the space, dropped objects. • Manual handling- limited space to move equipment.

9. Risk Assessment • Prior to entering a confined space the work must be planned, risk assessed and risk treated, controlled and reduced to ALARP: • The following documentation must be completed: • A Permit to Work Form and a Confined Space Entry Checklist and Register • A Job Safety Analysis Form Note: Confined Space Entry Checklist and Register must be completed before the Permit to Work is authorised. The checklist must be attached to the Permit to Work Form.

10. Permit to Work • The Permit to Work and Confined Space Entry Checklist and Register are to include the following: • Set out the work to be done, the location and precautions to be taken. • Pre-determined safe method of work. • Provide a clear record that all foreseeable risks have been considered. • Provided written authority for the confined space to be entered. • Identify any Isolation required to be put in place (All energy sources that discharge in confined space must be isolated).

11. Job Safety Analysis (JSA) • A JSA shall be conducted to discuss all aspects of the task and identify all hazards and control all risk by: • Identifying the latest content of the confined space. • Identifying and checking the adjacent confined space/s. • Ensuring the confined space to be worked in is empty and ventilated. • Ensuring Continuous Guard and or rescue team are in place. • Providing adequate lighting is in place. • Assessing the temperature within the confined space. • Evaluating if special PPE is require. • Check and evaluate gas and oxygen measurements.

12. Training • Confined space entry: Only competent personnel who have received appropriate training shall enter confined spaces or tanks. • Confined space rescue: Only competent personnel who have received appropriate training shall be assigned as members of an emergency response team for confined space rescue. • Testing of Confined Space Atmosphere: Only competent personnel who have received appropriate training shall carry out testing of a confined space atmosphere. • Confined Space Continuous Guard: Only competent personnel who have received appropriate training shall be assigned as a continuous guard during confined space entry.

13. Ventilation of Confined Space • Ventilation by blower, inductor or fan may be necessary prior to the entry to remove harmful gases and vapors from a confined space or tank. • The method and equipment chosen are dependent upon the size of the confined space openings, the gases to be diluted and the source of make-up air. • Ventilation should be stopped 10 minutes before testing are undertaken and not restarted until the atmospheric testing are completed.

14. Testing the Confined Space Atmosphere The atmosphere is to be sampled for oxygen levels and combustible gas in the following sequence: (1) Testing Oxygen-deficient or enriched atmospheres A confined space with an atmosphere reading below 19.5% or above 23.5% oxygen by volume shall not be entered. Oxygen measurement shall be carried out immediately before entry into the confined space. (2) Testing of Flammable Atmospheres A confined space with an atmosphere of more than 1% of the “Lower Flammable Limit” (LFL) or “Lower Explosive Limit” (LEL) on combustible Gas Indicator shall not be accessible to personnel.

15. Testing the Confined Space Atmosphere (cont.) (3) Testing for Toxic atmospheres when considered necessary Toxins are measured in parts per million (PPM) under no circumstances should personnel enter a confined space exceeding the limits’ specified below.

16. Equipment required for Confined Space Entries • (1) For Work within Confined Space • A portable gas detector capable of continuously monitoring the oxygen content, H2S content and Lower Explosive Limit complete with accessories to allow remote detection. • An explosion-proof air exhaust fan. • A minimum of two explosion-proof portable lights. • Explosion-proof radio communication set. • Appropriate warning signs and barricades.

17. Equipment required for Confined Space Entries (cont.) • (2) For Vertical Confined Space Entry • A portable tripod with a combined fall arrestor-retrieving winch or similar system. • One Company approved full body harness per person. • (3) For Rescue within Confined Space: • One 30 minute Self Contained Breathing Apparatus (SCBA) per rescue team member. • A stretcher that allows rescue of an injured person.

18. Confined Space Continuous Guard • Assist in atmospheric testing. • Ensure adequate rescue equipment are in place. • Remain at confined space entry location while any personnel are inside. • Continuously monitors area for any potential hazards. • Maintain contact with manned control point and personnel in confined space. • Maintain a tally of personnel inside the confined space. • Notify person in charge of any intentions to leave the area, so that a replacement is arranged. • Immediately raise the alarm if there is indication of personnel affected in confined space. DO NOT enter confined space until help is arrived.

19. Additional Requirements • Adequate communication system to be agreed ensuring continuous communication with continuous guard person. • Time of opening/closing a confined space and entry / exit of personnel to be recovered in confined space entry register. • Atmosphere to be consciously monitored with portable gas detector. • Air movers or blowers to be used for supplying fresh air if sufficient airflow through a free flow process is not possible. • Provisions to be made for ready exit and entrance. Use of safety line to indicate the direct route may be considered. • Fuel tanks to be entered ONLY with Rig Operations Manager approval.

20. Additional Requirements (cont.) • No source of ignition to be introduced in confined space when flammable vapours and gases may be present. • When working in confined spaces all pipelines discharging into that space to be isolated. • In case of rescue situations there must be at least two persons on the rescue team equipped with approved respiratory equipment and one person so equipped outside.

21. Hot Work in Confined Spaces In addition to the above and hot work procedures the following are to be adhered to: • When levels of combustible gases or oxygen enriched atmosphere is detected, area must be naturally air or ventilated until area is safe to entered. • If hot work is carried out on pipelines passing through confined spaces, they must be isolated. • Avoid taking gas cylinders in confined space. If necessary to take gas cylinders, a specific gas check to be made in the vicinity of the cylinders prior to recommencing work after a break. • When hoses are run from gas cylinders outside the confined space, all hoses and fittings to be disconnected from the gas cylinders or removed from the confined space during extended breaks.

22. Any Questions?