SAFETY HYDRO-BLASTING PROCEDURE TABLE OF CONTENTS

Transcription

1 Page 1 of 18 TABLE OF CONTENTS 1. INTRODUCTION SCOPE & PURPOSE DEFINITIONS PROCEDURE RESPONSIBILITIES REFERENCES ATTACHMENTS APPENDICES REVISION HISTORY Rev. Issue Date Amendment Description Prepared By Reviewed By Approved By 0 15-Nov-14 First Release Jon Saucedo Refer Sec.9 Refer Sec.9 Next Scheduled Periodic Review: December/2017 Page 1 of 18

2 Page 2 of INTRODUCTION This procedure provides the minimum requirements for the safe operations of hydro-blasting or water-jet cleaning equipment within Q-Chem, Q-Chem II and RLOC facilities; henceforth all facilities shall be identified as Q-Chem. For the purposes of this procedure, the term hydroblasting covers all high pressure water cleaning activities with pressures equal to or above 275 bar (4,000 psi). Hydro-blasting is identified as: Category Pressures Use Pressure Washing < 275 bar (4,000 psi) Hydro-blasting > 275 bar (4,000 psi) Ultra High Pressure Hydroblasting > 2750 bar (40,000 psi) General use, steam cleaners, pressure washing equipment Special use, high pressure, high volume Specialized demolition or cleaning, very high pressure, very high volume Pressure washing equipment may be operated by a single individual; this person is usually not a specialty contractor. Common use for this equipment is concrete cleaning, cleaning pump bases, and other routine housekeeping work. Hydro-blasting equipment is normally operated by a specialty hydro-blasting company. Such contractors are expected to have detailed safety procedures considering equipment requirements, operating procedures, and operator qualifications/certifications. The hydro-blasting Contractor is responsible for compliance with their written procedures and with this procedure. The intention of this procedure is to provide recommendations and requirements to physically isolate the hydro-blasting operator and others from exposure to the pressurized water flow by: Ensuring there is no risk of the hydro-blasting operator being exposed to the high pressure water by providing physical barriers and specialized PPE; Mitigating the presence of hazards in the area and inherent to hydro-blasting to ensure they do not expose the operator to occupational, health or safety risks; Providing hydro-blasting safety requirements and operational guidelines for rated pressures up to 275 bar (4,000 psi) or above. 2. SCOPE & PURPOSE NOTE 1 Use of ultra-high pressure hydro-blasting pressures exceeding 2750 bar (40,000 psi) shall require the development of an approved taskspecific procedure or method statement. This procedure provides the requirements for the operation of hydro-blasting equipment. It describes methods for eliminating or reducing hazards and risks associated with hydro-blasting operations carried out at pressures equal to or above 2,000 psi or involving the use of additives and abrasives. All personnel operating hydro-blasting equipment are responsible for ensuring the requirements of this procedure are followed. Page 2 of 18

3 Page 3 of DEFINITIONS AWD - Anti-Withdrawal Device prevents the nozzle from reversing direction inside a pipe and exiting the entry point uncontrolled. Back Thrust reactive forces from the high-pressure water jets physically stress the operator and affects operator control. Sound footing conditions must be established and maintained during cleaning. Bursting/Rupture Disc a device designed to burst/rupture when a pre-determined mechanical pressure setting has been exceeded. Double-action Switches two hand activated switches; when either one is released this water pressure will drop. Double Dead Man Switch two safety switches, when either one is released will cause water pressure to drop. DSR Designated Site Representative Flex Lance small bore flexible tubing to clean piping bends; typically fitted with a selfpropelling nozzle and restraining clamp. Flexible Lancing the cleaning of piping or exchanger tubes while using a flex lance. Foot Pedal a manual foot device when released automatically removes operating pressure by dumping the nozzle supply pressure. Hydro-blasting refers to activities related to the use of industrial high pressure cleaning equipment capable of generating pressures up to 2,750 bars (40,000 psi). Hydro-Blasting Gun a shoulder mounted device that is hand operated, has a rigid barrel with a nozzle, pressure is controlled by the trigger/hand control valve. The hydro-blasting gun is made up of: A trigger/hand control valve mounted with a guard A safety trigger A shoulder rest with pad A rigid barrel, long enough to prevent operator from pointing water jet at himself A nozzle assembly One or more support handles JSA Job Safety Analysis Lancing a high pressure water delivery system connected to a lance (flexible or rigid) with a nozzle that is inserted into and retracted from the interior of a piping or tubes mechanically, hydraulically, or manually. Nozzle a device designed to restrict the flow of a fluid there by accelerating the water to the required velocity and shaping it to the required flow pattern. Nozzle designs can vary per the particular applications, combinations of forward and backward nozzles are often used to balance the thrust. Such nozzles are commonly referred to as tips, jets or orifices. PPE Personal Protective Equipment Pressure Washing refers to activities related to the use of non-industrial high pressure cleaning equipment capable of generating a maximum pressure less than 2,000 psi. Restraining clamp a clamp used in conjunction with the anti-withdrawal device as a stop. Page 3 of 18

4 Page 4 of 18 Rigid Lance high pressure tubing that is not flexible with a nozzle attached to the end; a mechanical system feeds and retracts the lance. (This type of hydro-blasting process provides the most protection for the operator.) Safety Trigger a hand operated lock or lever that requires two actions to discharge water using a hydro-blasting gun. Shot Gunning the blasting of deposits out of the end of a pipe or tube. The hydroblasting gun is commonly fitted with a shrouded nozzle which is pushed firmly against the open end of the pipe of tube while the jet is operated in short bursts. This piece of equipment normally resembles a gun arrangement. Starter Bar a piece of pipe affixed to a lance and the nozzle tip; this prevents the lance from reversing in the line or pipe. Trigger/Hand Control Valve a hand device which automatically removes operating pressure by dumping the nozzle supply pressure to grade Whip Check A short length of cable looped over each end of two hose s that are connected by a coupling. A whip check is designed to stop the ends of the hose from whipping around if the coupling breaks. 4. PROCEDURE Hydro-blasting is an activity with significant inherent hazards. If work tasks are performed incorrectly, there is a risk of serious injury including fatality. As such, hydro-blasting activities shall be approached with a risk control hierarchy: i. First Inherently safer options for cleaning should be considered (such as chemical cleaning). ii. Second If hydro-blasting activities are required, remotely controlled mechanical cleaning devices (rigid lancing) should be considered to separate the operator from the high pressure water hazards. iii. Third When manual hydro-blasting is required, all relevant requirements of this procedure shall be followed and any additional PPE identified in the JSA shall be worn. The manual use of hydro-blasting equipment shall only be utilized as a last resort where the use of other automated or mechanical equipment cannot be used Hydro-blasting Injury Any injury caused by hydro-blasting is extremely serious and life threatening. In the event of any hydro-blasting injury, the following actions shall be taken: i. Activate the ERT by any of the means below: a) At Q-Chem: Dial 111 on the radio b) At RLOC: Push the Red Man Down button on the radio c) Call 555 on any field or office phones d) Press the Red Button (Fire) on field phones/manual Call Points e) Press the Yellow Button (Chemical Release) on field phones/manual Call Points ii. Provide which Unit the work is being conducted in and the exact work location. iii. Remain at the scene until the Incident Commander has arrived on-scene. Page 4 of 18

5 Page 5 of 18 iv. Ensure the injured person is not at risk from other safety or health hazards. v. Reassure the victim by making eye contact and talking to him/her in a calm voice Hazard Mitigation i. Hydro-blasting work activities shall always be performed in a location that is already safe or has been made safe for surrounding personnel and equipment. a) Operations shall ensure fixed process equipment is protected from hydro-blasting activities by erecting barriers or panels where necessary. The Q-Chem Warehouses stock clear poly sheeting/barriers (Stock Item #507434). The clear poly sheeting increases visibility of the hydro-blasting operation while providing personnel protection and fixed equipment protection. b) Sturdy barriers or panels shall be erected when needed to protect personnel. ii. Equipment being cleaned by hydro-blasting shall not be held manually/physically by anyone. iii. Hydro-blasting work areas shall be barricaded with red barricade tape extending out in a 10 meter (30 feet) radius. Overspray from water shall be monitored during cleaning; barricades shall be extended if necessary to contain all overspray. Install hydro-blasting safety signs around the work area. iv. Hydro-blasting equipment shall be inspected and approved by the Contractor, Maintenance Department and DSR. The hydro-blasting equipment shall meet the facility requirements stated below prior to starting any blasting: a) Hydro-blasting equipment operates at various working pressures and flow rates. To minimize hazards, the operating pressure shall never exceed the rated pressure of the equipment. b) All wet parts (fittings, valves, etc.) on the pressure side of the pump discharge shall be constructed of stainless steel with pressure ratings clearly marked. All parts used shall be designed for use at or above the pressure relief device setting. v. If a leak is identified on the high pressure side of the hydro-blasting equipment, the pump operator shall immediately shut down the pump and notify the Operating Unit and Safety Specialist. vi. If repairs are necessary to maintain hydro-blasting equipment onsite, hydro-blasting activities with repaired equipment may only resume after repairs are verified by the Maintenance Department and DSR. vii. Any type of ladders, step stools, or rolling platforms shall not be used when operating hydro-blasting equipment. viii. Hydro-blasting pumps shall be located as close as possible to the work area to eliminate long runs of high pressure supply hoses through any high access or work areas. ix. Hydro-blasting pumps shall be barricaded with red barricade tape extending out 5 meters (15 feet) in all directions. Install hydro-blasting safety signs around the work area. x. Hydro-blasting pump supply hoses shall be barricaded with red barricade tape extending out 5 meters (15 feet) in all directions. Install hydro-blasting safety signs around the work area. xi. The blasting equipment and the equipment being cleaned shall be bonded / grounded to minimize static electricity build-up. Page 5 of 18

6 Page 6 of 18 xii. Hydro-blasting equipment shall be de-pressurised when not in use or left unattended. xiii. All hoses and blasting equipment shall be flushed before installing nozzles and using at cleaning pressures. xiv. Prior to initiating cleaning activities, all equipment shall be inspected for damages and leaks. While checking for leaks, the hydro-blasting pump and hoses shall be slowly pressurized until reaching the cleaning pressure. xv. When flexible lancing or rigid lancing, the foot pedal shall be controlled by the flexible lance operator. When lancing exchanger tubes, if another person is required to assist with the lance or hose, only the lance operator (person nearest the working end of the lance) shall operate the foot pedal. xvi. When flexible lance cleaning of open ended piping or tubes, shielding (as identified in Section 4.2. (i) shall be constructed to deflect projectiles. xvii. A highly visible marker shall be placed no less than 120cm (4 feet) from the nozzle to indicate the end of a lance. This will serve as a signal to the operator that the end of the lance is near and pressure should be relieved Contractor Training NOTE 2 No hydro blasting equipment safety devices or pressure relief devices shall ever be by-passed or locked into position. i. The DSR is responsible for ensuring the contractor trains their employees on the safety of hydro-blasting operations and the hazards associated with hydro-blasting. Areas which shall be addressed during the training include: a) Operating Procedures b) Safety procedures c) Emergency procedures d) Safety Training e) Equipment operating procedures f) Equipment maintenance g) Hydro-blasting procedures/guidelines Cleaning operations Washing operations Cutting operations h) Pressure Control Devices i) Anti-Withdrawal Device operations and functions j) Personal Protective Equipment k) Hose inspection and testing l) Hazards associated with operation of hydro-blasting equipment, including: Elevated water temperature generated by heat of compression. Page 6 of 18

7 Page 7 of 18 Water injection and cut hazards. ii. The DSR shall verify contractor work crew training is current prior to allowing them to initiate work activities. iii. Contractor training documentation shall be maintained on site and available upon request PPE Requirements i. During all active blasting in the hydro-blasting work areas, contractors engaged in the cleaning shall wear, at a minimum, the following mandatory PPE: a) Fire Retardant Coveralls b) Hard hat c) Chemical Splash Goggles d) Face Shield with Chin Guard e) Double Hearing Protection ii. For manual hydro-blasting, the lance operator shall wear a hydro-blasting body armor suit consisting of: a) Rubber boots with built-in metatarsal protection and steel toe caps; b) Chaps; c) Torso with side protection; and, d) Forearm covers. e) Water temperatures above 50 degrees shall require the additional use of chemical and fire resistant PVC suit under the body armor suit. iii. Appropriate gloves as identified in the JSA and approved by Operations, Maintenance and the DSR. iv. Additional PPE requirements if identified by the JSA team, such as: a) Specific clothing to mitigate chemical cleaning exposures; b) Respiratory protection 4.5. Hydro-blasting Hoses All hydro-blasting hoses shall be inspected and approved by the Contractor, Maintenance Department, and DSR. The hydro-blasting hoses shall meet the facility requirements stated below prior to starting any blasting: i. Hoses shall be protected from damage including, but not limited to, that from vehicular traffic, hot/cold process lines or equipment, and from external abrasions. ii. All hoses shall be hydro-tested by the contractor prior to use in Q-Chem. a) Hoses shall be tagged with the current test date and test pressure. Test dates shall not be older than one year. b) Contractor shall possess a current pressure-test certificate for each hydro-blasting hose. Page 7 of 18

8 Page 8 of 18 c) Hydro-blasting hose certificates shall be available at the job site during the duration of the work. d) The Maintenance Department and DSR shall inspect all hoses and ensure certification prior to allowing hydro-blasting work to begin. iii. All hoses used in the delivery of high-pressure water shall: a) Use threaded stainless steel connections; quick-connect/disconnect fittings are not permissible for hydro-blasting use; b) Have a whip check installed on all connections at all times during use to prevent whipping if the connection is broken; c) Be free of any visible damage such as cuts or abrasions during use; d) Be rated for a working pressure equal to or greater than the pressure relief device setting. iv. Hose shrouds shall be placed on hoses and fittings used in proximity to manual gun/lance operators. To ensure appropriate protection of personnel, hose shrouds shall: a) Shall be made of stainless steel braid, Kevlar, or equivalent material; b) Shall cover the hose connection at the gun and extend down the hose for at least 3 meters; c) Be taken out of service and replaced if a hose rupture is experienced from within the shroud Hydro-blasting Gun Assemblies All hydro-blasting guns and equipment shall be inspected and approved by the Contractor, Maintenance Department and DSR. The hydro-blasting gun and equipment shall meet the facility requirements stated below prior to starting any blasting. Page 8 of 18

9 Page 9 of 18 NOTE 3 During manual hydro-blasting gun operations, back-thrust force results from water leaving the nozzle at a high velocity. Exposing a hydro-blast gun operator to high back-thrust forces for extended periods of time creates operator fatigue and can lead to unnecessary safety risk. To ensure the operator always has the ability to safely control the gun, it is not recommended for an operator to withstand a back-thrust [lb-thrust] of more than onethird (1/3) of his/her body weight for an extended period of time. Back thrust can be calculated from the following equation: gpm psi = lb-thrust Where gpm is gallons per minute flow and psi is the pressure setting used on the hydro-blasting pump For example, an operator working with a hydro-blasting gun at 10,000 psi and 12 gpm will experience a back thrust equal to: ,000 = = 62 lb-thrust Consequently, this means the operator should weigh at least 186 pounds (85 kg) to operate the gun for more than only a short duration. In poor conditions (such as uneven or slippery footing, low light, confined spaces, etc.), lower back-thrust should be used. i. Hydro-blasting gun assemblies shall be constructed of stainless steel with pressure ratings clearly marked. Hydro-blasting gun assemblies shall be rated for a working pressure equal to or greater than the pressure relief device setting. ii. Hydro-blasting guns shall have a built-in safety trigger designed to prevent accidental discharge if the trigger is dropped, bumped, or hit. All hydro-blasting gun triggers shall be equipped with a trigger guard. iii. Hydro-blasting guns shall be equipped with a shoulder stock that prevents the hose, shroud, and fittings from being forced against the operator s body. iv. When operating the hydro-blasting gun, the shoulder stock shall be held firmly against the operator s shoulder. v. The operator closest to the nozzle shall control the safety trigger that releases pump pressure. vi. Hydro-blasting gun assemblies shall be inspected before use. If visible damage is identified during inspection, the gun shall be tagged out of service and removed from the hydro-blasting work area. Examples of damage include, but are not limited to, the following defects: a) Sharp edges on the handle, trigger, or stock; b) Bent, dented, or cracked barrel; c) Broken, abraded, or damaged hose shroud; d) Malfunctioning, locked, or missing safety trigger. vii. When cleaning of open-ended piping or tubes, shielding (as identified in Section 4.2. (i) shall be constructed to deflect projectiles. viii. When operating multiple hydro-blasting guns, a minimum distance of 5 meters shall be Page 9 of 18

10 Page 10 of 18 maintained between each gun operator. If the distance cannot be maintained, a physical shield/barrier as identified in section 4.2. (i) shall be erected between operators. ix. The minimum length from the nozzle to the shoulder stock butt of a hydro-blasting gun shall be no less than 67 inches (170 cm). The minimum length from the nozzle to the safety trigger shall be no less than 48 inches (120 cm). x. Hydro-blasting guns shall be de-pressurised when not in use, left unattended, or while moving or repositioning. Energized guns shall not be passed or transferred from one person to another person at any time Flexible Lancing All flexible lancing and equipment shall be inspected and approved by the Contractor, Maintenance Department and DSR. The flexible lancing and equipment shall meet the facility requirements stated below prior to starting any blasting: i. Flexible lance assemblies require the following components, as a minimum: a) <6 (15 cm) I.D. piping - high pressure hose and nozzle; b) >6 (15 cm) I.D. piping - high pressure hose, starter bar, and nozzle. ii. Anti-Withdrawal Devices (AWD): a) All manual flexible lancing cleaning of exchanger tubes or process piping shall incorporate the use of anti-withdrawal (fail-safe) devices (AWD) attached to the equipment to prevent the lance exiting the tube in an uncontrolled manner. b) AWDs shall have the manufacturer s name and manufactured date permanently affixed or stamped to the device. Any AWD self-manufactured by the contractor shall be approved by the DSR, Maintenance and Safety Department prior to use. c) Anti-withdrawal devices shall be inspected before use. If visible damage is identified during inspection, the AWD shall be tagged out of service and removed from the hydro-blasting work area. Examples of damage include, but are not limited to, the following defects: Defective parts; Broken welds; Worn components; Improper model for the job; Improper insert for the lance size; Improper bolts, washers, nuts or other un-approved means for securing the AWD to process equipment. d) AWDs shall be mechanically attached to the tube exchangers, bundles and piping when lancing. Care must be taken not to damage the flange gasket surface when attaching the AWD. e) The AWD shall be installed as close as possible to the point where the flexible lance enters the equipment being cleaned. f) Equipment with deep channel heads will require the use of a telescopic AWD. g) Prior to starting cleaning activities, a pull test of the AWD shall be conducted to ensure the correct size of the device and flexible lance has been installed and that the AWD is functioning as expected. Similar pull tests shall be conducted each time: Page 10 of 18

11 Page 11 of 18 Adjustments have been made to the AWD; At the beginning of a new shift/crew; If the flexible lance operator has changed; If the nozzle has been changed. iii. Flexible lancing supply pressure shall be controlled by the operator. iv. A flexible lance foot pedal shall be used to control the operation of the lance and enable the operator to use both hands to hold and move the flexible lance. The foot pedal shall: a) Be under the exclusive and immediate control of the operator; b) Be mounted within a frame with shielding to prevent inadvertent activation and to protect the operators foot in case the hoses accidentally disconnects or separates unexpectedly. c) Provide enough clearance for boots with metatarsal protection and steel toe caps to fit and still allow easy operation. d) Be equipped with a hose shroud shall be attached on the supply side to protect the operators foot and leg. e) Be equipped with a diffuser to reduce the kick-back as well as control the pressure dump. The diffuser orifice size shall be one size larger than the high pressure hose. For example, on a high-pressure hose I.D. of 25mm, the orifice size shall be 32mm. v. Prior to starting flexible lance blasting operations in a tube sheet, 15cm of each tube shall be cleaned using a hydro-blasting gun. Cleaning the first 15cm of each tube will allow the blasting operator to insert the flexible lance nozzle in the tube and activate the pump ensuring the blasting operator is not exposed to the high water pressure. vi. On piping 15cm and larger, the starter bar and nozzle shall be longer in length than the diameter of the pipe. vii. Nozzles used on flexible lances shall be designed to propel the lance forward. viii. When operating multiple flexible lances, a minimum distance of 5m shall be maintained between each flexible lance operator. If the distance cannot be maintained a physical shield/barrier as identified in section 4.2. (i) shall be erected between operators Rigid Lancing/Automated Equipment All rigid lancing and equipment shall be inspected and approved by the Contractor, Maintenance Department and DSR. The rigid lancing and equipment shall meet the facility requirements stated below prior to starting any blasting: i. A remote control station for operating the rigid lance shall be used to control the operation of the lance and enable the operator to use both hands when operating the automated controls. The remote control station shall: a) Be under the exclusive and immediate control of the operator mechanically moving the rigid lance and controlling the activation of the pressure switch. b) Be mounted on a stand or portable that is connected to the rigid lance automated equipment. c) Be equipped with a diffuser to reduce the kick-back as well as control the pressure dump. The diffuser orifice size shall be one size larger than the high pressure hose. For example, on a high-pressure hose I.D. of 25mm, the orifice size shall be 32mm. Page 11 of 18

12 Page 12 of 18 ii. The safety trigger, dump valve or remotely controlled dump system shall always be controlled by the person closest to the nozzle. iii. When operating multiple rigid lances, a minimum distance of 5m shall be maintained between each rigid lance operator. If the distance cannot be maintained a physical shield/barrier as identified in section 4.2. (i) shall be erected between operators. iv. The stability of the blasting equipment shall be ensured by anchoring the automated equipment to the equipment being cleaned or by building a support structure to which the automated equipment can be mounted. v. The use of an anti-withdrawal device (AWD) for rigid lancing is not required as long as the operator can be stationed at least 2 meters or further from the equipment being cleaned. If the operator must be closer than 2 meters, an AWD must be incorporated. vi. Hose shrouds are not required on a rigid lance, except in locations where operators and employees are required to work in close physical proximity to high-pressure hoses. vii. A lance starter bar is not required on a rigid lance. viii. Nozzles on a rigid lance are not required to have pulling or neutral thrust. ix. A rigid lance shall not be repaired or worked on for maintenance unless the pump is taken out of gear and power to the rigid lance motors has been isolated in accordance with the Q-Chem LT&T requirements. x. PPE requirements for operators of automated lancing machines shall be determined during the JSA process. At a minimum, the dump valve operator shall wear a face shield and metatarsal boots shall be worn if a conventional foot pedal is used Hydro-blasting Pump i. The pumping unit shall be equipped with a pressure relief device and/or rupture disc capable of rapidly relieving the full capacity of the pump. ii. The pressure relief device and/or rupture disc assembly shall be sealed with a tamperproof seal and tagged with the device burst pressure setting and the date tested. Test dates shall not be older than one year. iii. If the hydro-blasting pump is trailer-mounted, the wheels shall be securely chocked prior to starting the pump. iv. The hydro-blasting pump and the equipment being cleaned shall be bonded / grounded to minimize static electricity build-up. Continuity of the ground loop shall be verified prior to starting the pump. v. Install Hydro-Blasting Safety Signs prior to starting the pump. vi. The hydro-blasting pump operator shall always maintain a line-of-sight with the hydroblasting operator. vii. Unauthorized personnel requiring access into an active blasting area shall notify the hydro-blasting Pump Operator prior to entering the work area. The Pump Operator shall notify the blasting Operator to stop and de-pressurize the lance or shotgun, stopping all work activities. The pump Operator shall shut down the pump. Work shall not resume until the unauthorized person or personnel have exited the barricaded area. Page 12 of 18

13 Page 13 of RESPONSIBILITIES 5.1. Safety i. Maintain this procedure and keep all information current and relevant. ii. Review the procedure on accordance with established Records and Information Management requirements. iii. Participate in hydro-blasting JSA meetings, as appropriate. iv. Ensure PPE requirements and equipment provides appropriate protection to mitigate identified hazards. v. Audit hydro-blasting work activities with Operations and DSR, as appropriate Operations (Area Operator) i. Participate in hydro-blasting JSA meetings. ii. Assist contractor with proper locations for setup of equipment. iii. Verify hydro-blasting equipment set-up does not interfere with plant, equipment or operations. iv. Ensure electrical equipment in the work area has been isolated or protected from water ingress. v. Ensure barricades and signs are in place. vi. Audit the hydro-blasting work activities with Operations and DSR Designated Site Representative i. Ensure contractor is aware and understands all requirements of this procedure and verify that minimum requirements are always met. ii. Verify training / certification of all contractor employees. iii. Verify with ERG the maximum hydro-blasting operating pressure to be used on plant equipment prior to beginning any blasting / cleaning activities. iv. Coordinate with Operations when establishing the hydro-blasting location for the equipment to ensure spacing requirements are met. v. Verify that the Hydro-Blasting Safety Signs is posted prior to starting the pump Contractors i. Follow this procedure as written. ii. Ensure contractor employees operating hydro-blasting equipment are trained in accordance with section REFERENCES None 7. ATTACHMENTS Page 13 of 18

14 Page 14 of 18 None 8. APPENDICES 8.1. Hydro-Blasting Safety Sign 8.2. Hydro-Blasting Medical Information 8.3. Pictures of Hydro-Blasting Safety equipment, work stands and PPE Appendix I Hydro-Blasting Safety Sign Page 14 of 18

15 Page 15 of 18 Appendix - II Hydro-Blasting Medical Information IN THE EVENT OF A HYDRO-BLASTING INJURY, PROVIDE THE FOLLOWING INFORMATION AS A GUIDELINE TO THE PHYSICIAN ON DUTY. 1. Medical Examination Do not underestimate these types of injuries! Determine the extent of the dispersal (Liquid or Gas) in the affected part of the body. Factors that could help determine the choice of treatment: i. Operating discharge pressure ii. Source of the water used iii. Water temperature iv. SDS of any additives, soaps, etc. being used v. Condition of the skin vi. The degree of reaction to the injured or damaged area vii. Color, swelling, temperature and function of the injured or damaged area viii. The degree in which injured or damaged area responds to the nervous system functions Page 15 of 18

16 Page 16 of 18 Appendix III - Pictures of Hydro-Blasting PPE, safety equipment & work stations Hydro-blasting gun work station, notice how the equipment has been properly secured for cleaning Anti-with drawl device for flexible lancing and a scaffold wall for operator protection Normal Pressure Washing PPE for pressures less than 275 bar Page 16 of 18

17 Page 17 of 18 Special Hydro-Blasting PPE called a Turtle Suit mandatory use for pressures above 275 Bar Page 17 of 18

18 Page 18 of REVISION HISTORY Rev. Issue Date Amendment Description Prepared By Reviewed By Approved By 0 15-Nov-14 First Release Jon Saucedo Carl Benson Anthony D Dugat Almas R Al-Sulaiti Roehl Bartolome Paton D Willis Arantelo D Abreu Ahmed J Al-Subeay Carl Poldrack Kevin C Kabell Ali Al-Marri Abdulla S Al-Khulaifi Page 18 of 18