Ola Energy Ethiopia Bole Aviation Site Specific Procedures for Quality Control Checks for Fixed Equipment PDF

**OLA ENERGY ETHIOPIA** **BOLE AVIATION** Logo, company name Description automatically generated Specific Procedures for Tests and Quality Control Checks for Fixed Equipment [**1** **QUALITY CONTROL CHECKS ON FIXED EQUIPMENT AT AN AIRPORT DEPOT** 3](#quality-control-checks-on-fixed-equipment-at-...

**OLA ENERGY ETHIOPIA** **BOLE AVIATION** Logo, company name Description automatically generated Specific Procedures for Tests and Quality Control Checks for Fixed Equipment [**1** **QUALITY CONTROL CHECKS ON FIXED EQUIPMENT AT AN AIRPORT DEPOT** 3](#quality-control-checks-on-fixed-equipment-at-an-airport-depot) [**1.1** **STORAGE TANKS** 3](#storage-tanks) [**1.1.1** **EI 1542 STORAGE TANK AND PIPELINE MARKINGS** 3](#ei-1542-storage-tank-and-pipeline-markings) [**1.1.2** **DAILY STORAGE AND PRODUCT RECOVERY TANKS DRAINING** 3](#daily-storage-and-product-recovery-tanks-draining) [**1.1.3** **TANK DRAINING PROCEDURE** 3](#tank-draining-procedure) [**1.2** **DAILY FILTER SAMPLING AND SUMP DRAINS** 5](#daily-filter-sampling-and-sump-drains) [**1.2.1** **FILTER SAMPLING PROCEDURE** 5](#_Toc102680847) [**1.3** **BONDING WIRES -- CONTINUITY CHECKS** 6](#bonding-wires-continuity-checks) [**1.4** **WEEKLY LOW POINT DRAINS** 6](#weekly-low-point-drains) [**1.5** **GAUZE MESH STRAINERS CHECK PROCEDURE** 7](#gauze-mesh-strainers-check-procedure) [**1.6** **AVIATION HOSES** 8](#aviation-hoses) [**1.6.1** **AVIATION HOSES MONTHLY CHECK** 8](#_Toc102680859) [**1.6.2** **AVIATION DEPOT PRESSURE HOSES - SIX MONTHLY TEST** 9](#aviation-depot-pressure-hoses---six-monthly-test) [**1.7** **EMERGENCY STOP SYSTEM CHECK** 11](#emergency-stop-system-check) [**1.8** **FIRE EXTINGUISHERS** 11](#fire-extinguishers) [**1.8.1** **MONTHLY FIRE EXTINGUISHER CHECKS** 12](#_Toc102680872) [**1.9** **MONTHLY FIRE FIGHTING SYSTEM TEST** 12](#monthly-fire-fighting-system-test) [**1.10** **STORAGE TANK FLOATING SUCTION** 12](#storage-tank-floating-suction) [**1.10.1** **STORAGE TANK FLOATING SUCTION CHECK** 13](#storage-tank-floating-suction-check) [**1.11** **TANKS HIGH LEVEL ALARM SYSTEM CHECK** 14](#tanks-high-level-alarm-system-check) [**1.12** **STORAGE TANK VENT / MESH SCREENS CHECK** 14](#storage-tank-vent-mesh-screens-check) [**1.13** **STORAGE TANK MANHOLE COVERS AND GUAGE HATCHES CHECK** 14](#storage-tank-manhole-covers-and-guage-hatches-check) [**1.14** **QUICK FLUSH TANK (QFT) INSPECTION AND CLEANING** 14](#quick-flush-tank-qft-inspection-and-cleaning) [**1.15** **TANK INTERNAL INSPECTION WITHOUT ENTRY** 15](#tank-internal-inspection-without-entry) [**1.15.1** **TANK INTERNAL INSPECTION WITHOUT ENTRY PROCEDURE** 16](#tank-internal-inspection-without-entry-procedure) [**1.15.2** **JET FUEL TANK CLEANLINESS ASSESSMENT** 16](#jet-fuel-tank-cleanliness-assessment) [**1.16** **TANK CLEANING** 15](#tank-cleaning) [**1.17** **TANK BUND AREAS** 17](#tank-bund-areas) [**1.17.1** **TANK BUND WALL AND VALVE INSPECTION** 18](#tank-bund-wall-and-valve-inspection) [**1.18** **INTERCEPTOR INSPECTION** 17](#interceptor-inspection) **QUALITY CONTROL CHECKS ON FIXED EQUIPMENT AT AN AIRPORT DEPOT** ================================================================= - Once aviation fuel is manufactured and certified to a given specification, the storage and handling facilities in the subsequent distribution system plays a crucial role in the quality chain to ensure that the product remains on-specification and is not contaminated with other products, dirt or water. - The test and maintenance of equipment must be performed on a regular basis as required by qualified personnel. - The 'Test Frequencies' document should be referred to for the timing of various surveillance and maintenance tasks - All the appropriate Personal Protective Equipment (PPE) must be worn. - When climbing tanks and walkways, walking into bunded and areas where there are pipes trip and bump hazards caution needs to be taken. Survey the area for any hazards. - Some electrical equipment is required for some of these checks to ensure that all necessary safety requirements are met before proceeding. - Records shall be kept of inspections, tests, repairs and modifications of equipment. **STORAGE TANKS** ----------------- ### **EI 1542 STORAGE TANK AND PIPELINE MARKINGS** - Tanks must be prominently numbered and marked with grade stored, date it was last cleaned / inspected and the next due date for cleaning. ### **DAILY STORAGE AND PRODUCT RECOVERY TANKS DRAINING** - Each morning at the start of the shift, each storage tank and each product recovery tank bottom drain samples are drawn and tested according to the visual appearance check. - All free water is to be removed and water tests are conducted with Chemical Water Detector (CWD). - The tank shall be rechecked after periods of heavy rain. *The results are to be recorded with findings* ### **TANK DRAINING PROCEDURE** - To ensure that product quality is satisfactorily maintained in storage, the following procedures must be applied for both tanks in service and not in service. **Step 1** - Open the tank gate valve and the QFT inlet ball valve **Step 2** - Flush at full flow a quantity in excess of the line content from the storage tank to the sample-receiving vessel (QFT). **Step 3** - Open visijar inlet valve and take a running sample from the line for a Visual Appearance Check and check satisfactory Chemical Water Detector test result has been obtained. **Step 4** - If this check indicates unsatisfactory product, the process should be repeated until satisfactory product is obtained. **Step 5** - Open visijar outlet valve and discard drain samples into the sample-receiving vessel (QFT). **Step 6** - Settle product for at least 10 minutes - Drain water and sediment at the low point until you obtain a clear and bright sample. - Estimate the amounts drained of both Sediment and Water and document. *This is intelligence information as to the condition of the tank* **Step 7** - Take a sample in a glass jar and perform a visual Appearance Check plus Chemical Water Detector test. **Step 8** - Visually check the cleanliness of the inside of the drain tank. **Step 9** - Transfer product back to the storage tank if the visual appearance check + CWD are satisfactory. - The transfer may be manual or motorized **Step 10** - When small amounts of water or solid contaminant are found, it should be noted. - Particular attention should be taken of any abnormal quantity or type, the cause established, and remedial action taken. - For example, an increase in the amount of solid matter from a typical few particle to a layer of particles on the bottom of the sample container might indicate rupture or bypassing of elements in the inlet filtration equipment. Similarly, the presence of say liter of water instead of a few droplets which could be attributed to condensation might indicate a leaking manhole cover, the absence of a dip hatch cover or the disarming of the inlet filter water separator. - Do not use QFT and drain tank slops as aviation fuel - If possible, downgrade the product to kerosene. - If you cannot downgrade, then dispose the product. **DAILY FILTER SAMPLING AND SUMP DRAINS** ----------------------------------------- - Each morning at the start of the shift, each FWS and Micro Filters shall be drained while under pressure, sampled and checked according to visual appearance check + CWD prior to use. - All sump drains must be done with the vessel under pressure, preferably under full flow conditions. - Monitor drain samples are taken form the inlet or dirty side of the vessel. 1. 1. 2. ### **FILTER SAMPLING PROCEDURE** **Step 1** **Filter Sampling** - Make sure that the sample jar or bucket is clean, the syringe is in good condition and the chemical water detector capsules are within date. **Step 2** - Turn the filter pump on to build up pressure in the vessel. **Step 3** - Make sure the sampling point is free from dirt rust and water, remove the cap from the sample point. **Step 4** - If you are using a bucket connect the bonding cable to a bonding point. **Step 5** - The first sample from the sump must be collected. If the sample lines are long, the volume of the sample lines must be known and the volume of the lines plus a minimum one liter must be collected. If the sample container will not hold the entire sample, the first part of the flush should be made into a separate container. **Step 6** - Turn the pump off and put back the cap on the sample point. **Step 7** - Create a vortex in the sample. **Step 8 Sampling Evaluation** - Looking in the bottom of the sample container and determine the amount of sediment that is present. Record the results. - Look in the bottom of the samples to see if any free water is present. Next, perform a Chemical Water Detector Test on the fuel. - Record the findings. The records must indicate what was found during sampling and should indicate how many samples and what volume was required to clear the samples from all water and sediment. Any other actions also need to be recorded. **Step 9 Other Samples** - If samples from the FWS / monitor are abnormal take a sample from the downstream side and check for water and sediment in the same manner. **Step 10 Sample Disposal** - All clean samples can be returned to storage via a sample return / quick flush tank. - Contaminated / Dirty / Slops Samples Contaminated, dirty or slops samples are not returned to storage. **BONDING WIRES -- CONTINUITY CHECKS** -------------------------------------- **Bonding Wires, clips and reels** - All fixed bonding wires and clips shall be checked for firm attachment and general condition daily and the results to be recorded. **Permissive Bonding Systems** - Permissive bonding systems that require a bonding circuit to allow pump start have a self-check function and (usually) indicator lights. These types of systems shall be checked daily for general condition. - These types of systems are checked for general condition checked daily but maintenance shall be performed at least annually according to the manufacturer's requirements. *Bonding must be the first operation before any product movement and maintained until the end of operations.* **Step 1** - Pre-check the multi-meter to ensure it reads zero. **Step 2** - Set it to a scale where 25 ohms can be easily read. **Step 3** - Visually check the condition of the bonding wire along the entire length of the wire including connections. **Step 4** - Attach one probe to the clip and the other to the fixed structure or earth stake. **Step 5** - Check electrical continuity over several revolutions of the reel while unreeling or reeling in the bonding wire slowly. **Step 6** - Read and record the result in Ohms. The maximum allowable result shall be less than 25 Ohms. If the result is above this, check that the connections are clean and bare metal is being connected to. **Step 7** - Any cables that are frayed or have damaged insulation should be properly repaired or replaced. **WEEKLY LOW POINT DRAINS** --------------------------- - Low point drains are done on pipe work anywhere there is a low point. Low point drains are installed so that the low point can be sampled and any water, sediment, particulates or scale that has collected can be removed. - This check also acts to monitor the condition of the pipe work. - When entering the pipe work area be aware of any potential risks that may cause injury to you. **Step 1** - Ensure that the sampling equipment you have is clean and dry, the Chemical Water Detector capsules are not out of date, the syringe is in good order and any rags or absorbent clothes are clean. **Step 2** - Unlock the drain valves and clean around the sample spout. **Step 3** - Open the isolation valve if fitted, place the sample container under the spout and open the ball valve. - Visually check the condition of the bonding wire along the entire length of the wire including connections. *All low points of the pipeline shall be flushed at a high velocity thoroughly once a week, with the line under pressure to ensure removal of any water or sediment.* **Step 4** - Take a line sample a minimum of 1 liter to a glass jar. **Step 5** - Create a vortex in the sample by either swirling the jar. **Step 6** - Perform the visual appearance check plus chemical water detector test. If water and sediment is present, continue the procedure until all of it has been removed. **Step 7** - Dispose off the sample in an appropriate manner, clean the equipment and store. **Step 8** - Secure and lock the sample point. Ensure any spilled product is cleaned up. **Step 9** - Record the results. **GAUZE MESH STRAINERS CHECK PROCEDURE** ---------------------------------------- **Step 1** - Advise all personnel that the checks will be conducted. **Step 2** - Isolate and tag pump power supply or lock out and tag upstream valves. - Close inlet an outlet valves to the strainer. - Bond a stainless-steel bucket to the Strainer Vessel. - Open the Strainer Drain Valve, empty the product in the Strainer Vessel into the bucket. - Visually check drained fuel for particulates. **Step 3** - Open the vessel cover. **Step 4** - Inspect the contents of the bucket, the mesh screen and the strainer body for any damage, and for any rusting or damage to the lining. - Any significant findings should be reported to the supervisor immediately for investigation **Step 5** - Clean the mesh screen of any contaminants **Step 6** - Replace or repair the basket as necessary and reassemble the Strainer. - Make sure gasket is in good condition and repair or replace if necessary. - Check sealing surfaces on strainer and vessel cover to make sure they are clean and will seat properly. - Replace the strainer basket, cover and cover retaining bolts. - Make sure drain valve is closed. **Step 7** - Check for leaks with vessel under pressure. - Open inlet and outlet valves. - Pressurize the pipeline. - Check for leaks **Step 8** - Complete the documentation. **AVIATION HOSES** ------------------ - Daily the condition of hoses used for receipt from road or rail tank car shall be checked visually during use. - Each hose in the depot needs to be checked for external damage, leaks, weakness, coupling slippage etc. - Suction hoses also need to be checked. Close inspection of the underside of the hose is necessary. *When not in service, hoses must be stored under cover with the ends capped.* 1. 1. 2. 3. 4. 5. 6. ### **AVIATION HOSES MONTHLY CHECK** **Step 1** - Fully extend the hose and apply normal pump pressure to loading hoses (or for suction hoses, during product transfer). **Step 2** - While under pressure inspect for external damage, leakage and other signs of weakness. **Step 3** - Inspect for coupling slippage indicated by misalignment of the hose coupling and exposed areas where slippage had occurred. - Kinking of the hose (especially repeated kinking) may damage the internal structure of the hose and should be avoided. **Step 4** - With the hose fully extended, release the pressure completely and inspect for soft areas, particularly to sections of the hose within about 45cm of couplings. **Step 5** - These sections shall be examined for weakness by pressing the circumference to feel for soft spots, blisters etc. **Step 6** - If possible, the hose should be looped and rolled for specific details in Step 2. **Step 7** - For suction hoses check the earth wire around the hose and check the general condition of the hose. **Step 8** - Record the results ### **AVIATION DEPOT PRESSURE HOSES - SIX MONTHLY TEST** - A pressure test, using a hydrostatic test pump, which is carried out when commissioning new hoses, whenever couplings are attached or re-attached to hoses, when accidental damage to a hose is suspected, and routinely every 6 months where the pump output /hydrant pressure exceeds 80 psi (5.5 bar). - The fitting of re-attachable end-fittings to hoses shall only be performed by trained and competent person(s) certified by the hose manufacturer or their authorized distributor. - The hose can be either removed from the fueling unit or tested in situ (on the fueling unit). If testing in situ you must verify that all fittings to be pressurized are designed to withstand the maximum test pressure to be applied. +-----------+-----------+-----------+-----------+-----------+-----------+ | **Applica | **Accepta | **Monthly | **6-month | **Commiss | **Attachi | | tion** | ble | test** | ly | ioning | ng | | | hose | | Pressure | new hoses | / | | | types** | | Testing** | with | reattachi | | | | | | factory | ng | | | | | | fixed | couplings | | | | | | couplings | ** | | | | | | ** | | +===========+===========+===========+===========+===========+===========+ | Aircraft | EI 1529 | Normal | 225 psi | 225 psi | 300 psi | | fueling/d | grade 2, | operating | (15 bar) | | | | efueling | Type C | pressure | | (15 bar) | (20 bar) | | | | | | | | | | ISO 1825, | | | | | | | Type C | | | | | +-----------+-----------+-----------+-----------+-----------+-----------+ | High | EI 1529 | | | | | | flowrate | grade 2, | | | | | | defueling | Type F | | | | | | | | | | | | | | ISO 1825, | | | | | | | Type F | | | | | +-----------+-----------+-----------+-----------+-----------+-----------+ | Fueling | EI 1529 | | | | | | equipment | grade 2, | | | | | | hoses | Type E or | | | | | | between | F ISO | | | | | | fixed | 1825, | | | | | | pipework | Type E or | | | | | | & fueling | F | | | | | | platforms | | | | | | | and | | | | | | | trailer | | | | | | | connectio | | | | | | | n | | | | | | | hoses | | | | | | +-----------+-----------+-----------+-----------+-----------+-----------+ | Fueler | EI 1529 | | 225 psi | 225 psi | 300 psi | | Loading | grade 2, | | (15 bar) | | | | | Type C or | | | (15 bar) | (20 bar) | | | F ISO | | | | | | | 1825, | | | | | | | Type C or | | | | | | | F | | | | | +-----------+-----------+-----------+-----------+-----------+-----------+ **Step 1** - Perform a precautionary visual inspection of the hose at operating pressure to identify any visible cuts or other damage. If such damage are found, then the hydrostatic test shall not be performed, and the hose shall be removed from service. **Step 2** - Fully extend the hose from its stowage position to be tested in straight position. Where it is not possible, extend it with wide bends. - It is not necessary to remove the hose if there is a suitable isolating valve in the pipework upstream of the connection. **Step 3** - Connect the fully extended hose to the test pump and fill with fuel. **Step 4** - Gradually apply test pressure and bleed any entrapped air from the hose and test equipment. **Step 5** - Because of the possibility of hose burst, stand back from the hose during pressurization and wait for 1 minute after reaching maximum test pressure before inspecting visually. **Step 6** - Maintain test pressure for at least 3 minutes and only as long as is necessary to inspect for external damage and coupling slippage. **Step 7** - Release pressure completely and pressurize to normal operating pressure and inspect for external damage, leakage and other signs of weakness. - If possible, the hose should be looped and rolled for specific details to ensure that the full circumference of the hose external surface is checked. **Step 8** - Inspect for coupling slippage indicated by misalignment of the hose coupling and exposed areas where slippage has occurred. - Kinking of the hose (especially repeated kinking) may damage the internal structure of the hose and should be avoided. **Step 9** - With the hose fully extended, release the pressure completely and inspect for soft areas, particularly to sections of the hose within about 45cm of couplings. **Step 10** - These sections shall be examined for weakness by pressing the circumference to feel for soft spots, blisters etc. **Step 11** - Finally, release pressure and drain the test pump to prevent possible contamination of product during future use. **Step 12** - Record the results **EMERGENCY STOP SYSTEM CHECK** ------------------------------- - Emergency stops are fitted to pump motors in all areas of fuel movement (mobile refueling vehicles, bridger unloading). - Activating the Emergency Stop will usually shut down the entire system and should only be used in an emergency or under test conditions. - Emergency pump stops are checked to see whether the emergency shut down system operates effectively. - Each button or stop needs to be checked on a monthly basis and the results recorded. **Step 1** - Select a suitable time - Ensure the pump is not being used for any reason and advise the Operators. **Step 2** - Proceed to a stop button that needs to be checked, press the stop and check the pump you are checking shuts down within a few seconds. **Step 3** - Ensure that the emergency stop sign is clearly visible and the stop is not obstructed in any way. **Step 4** - Faults must be reported and repaired. **Step 5** - Reset the button **Step 6** - Record the results and notify your supervisor if there are any problems. **FIRE EXTINGUISHERS** ---------------------- - Permanently pressurized fire extinguishers should be fitted with a pressure gauge. - Fire extinguishers should be marked with identity numbers. A record showing the location and all inspections and maintenance for each extinguisher shall be kept up to date. - Fire extinguishers need to be checked on a daily basis for their condition, mounting and function. *NB: Any fire extinguisher that has been discharged for any reason must be removed from service.* 1. 1. 2. 3. 4. 5. 6. 7. 8. ### **MONTHLY FIRE EXTINGUISHER CHECKS** **Step 1** - Remove the fire extinguisher from its mount (remove its protective cover if it has one). **Step 2** - Ensure access to the extinguisher is not blocked, they are in their specified places and are readily accessible. **Step 3** - Verify the locking pin is intact and the tamper seal is not broken. **Step 4** - Check the pressure gauge on the side of the extinguisher tap to check that the pointer is not stuck and is within the safe zone. **Step 5** - Check the hose and nozzle for condition, cracks, splits and weakness. **Step 6** - Check the service tag to see whether the fire extinguisher is overdue for its six-monthly service. **Step 7** - Results shall be recorded, and all records kept up to date. *NB: All fire extinguishers shall be serviced at least once per year by the manufacturer or by competent trained staff certified by the manufacturer or their authorized distributor.* **MONTHLY FIRE FIGHTING SYSTEM TEST** ------------------------------------- Firefighting system test-- include cooling nozzle checks. Valve operations, fire hose check, hose box check, foam check etc. **Step 1** - Extend the hose to its full length. **Step2** - Connect one end of the hose to the hydrant post connection. **Step 3** - Close the other end of the hose **Step 4** - Fully open the hydrant valve to pressurize the hose **Step 5** - Look for any sign of leakage and replace any leaking hose **Step 6** - Close the hydrant valve, relief the pressure, properly rewind the hose and put it in its box **STORAGE TANK FLOATING SUCTION** --------------------------------- - Water or solid contaminant entering a tank with the fuel normally settles to the bottom, leaving the fuel near the surface relatively clean and dry. - The Floating Suction is a safeguard device that draws product from the top of the tank to avoid suction of possible water and dirt from the bottom of the tank. - The jiggle wire attached should be in an easily accessible place on the tank. If not, notify your supervisor. - The correct function of floating suction arms shall be checked at least monthly. ### **STORAGE TANK FLOATING SUCTION CHECK** **Step 1** - Note the depth of the product in the tank. **Step 2** - Climb to the top of the tank and undo the hatch or dip cover where the floating suction cable is attached. - Ensure that you have no loose personal items, and your safety glasses are secure. *Be careful of any trip, walk, or ladder hazards when climbing to the top of the tank and vapors in the tank* **Step 3** - Check to see that the cable is firmly attached to the tank and bonded securely to both the Floating Suction and the tank shell. - Check that there is no oxidation or corrosion occurring on the attachments. **Step 4** - Check the cable to ensure it is in good condition, then pull out the cable to raise the float until the cable becomes tight. - Check the condition of the cable and its attachments. *Make sure gloves are worn!* **Step 5** - Pull the cable to test for movement. - After it has been raised, loosen your grip on the wire and feel if the suction floats. Listen to hear if it hits the bottom of the tank. - If the Float is damaged and leaking, the Floating Suction will have sunk to the bottom of the tank **Step 6** - Check the length of cable out of the tank, is about right for the height of the product in the tank. **Step 7** - If the check is satisfactory, return the cable to the tank and close all the hatches and secure. **Step 8** - Report any defects. If any defect is detected, the tank must be isolated until this is rectified. **Step 9** - Complete the documentation. **TANKS HIGH LEVEL ALARM SYSTEM CHECK** --------------------------------------- **Step 1** - Select a suitable time that will least impact the refueling operations. - Advise all Personnel. **Step 2** Ensure the following: - Power is being supplied to: - the control units and - the output alarm / interlock circuits - No tank is overfilled and has triggered the alarm. - No alarm indications on the control units - No external alarms. **Step 3** - For Push Button - Simulate the alarm condition for each tank by pressing the button marked 'Test' on each control unit, one at a time. Confirm in each case that: a. The red alarm L.E.D on the front of the correct control unit is illuminated b. Any audible and visual alarms operate correctly c. Where interlocks are installed, the relevant product pump cannot be started and / or the relevant pipeline valve cannot be opened. - For Live Testing -- Depending on the module fitted, simulate the overflow to verify the function. **Step 4** - Report any faults **Step 5** - Complete the documentation. **STORAGE TANK VENT / MESH SCREENS CHECK** ------------------------------------------ **Step 1** - Climb to the top of the storage tank and visually inspect all Tank Vents and Breather Valves to determine that they are not clogged in any manner or for general cleanliness. - Check that there are no birds nesting, insects, wasp nests etc. **Step 2** - For Tanks with PV vents, remove the PV vent covers and operate the pallets to determine if they open freely and close tightly. **Step 3** - Check the condition of the Gauze Mesh. Using a mirror will make this easier to check. - Check the full circle contact of pallets with seat. This can be visually determined, after removing any dirt, by racing the contact track made by the ring seat face on the face of the pallet. - Clean or replace if necessary. **Step 4** - Complete the documentation. **STORAGE TANK MANHOLE COVERS AND GUAGE HATCHES CHECK** ------------------------------------------------------- **Step 1** - Climb to the top of the storage tank and visually inspect all manhole covers and gauge hatches to check the condition of sealing gasket, sealing surface, fasteners etc. **Step 2** - Open the manhole covers and operate the pallets to determine if they open freely and close tightly. **Step 3** - Check that there is no rusts on the external surfaces and the internal surfaces are fully lined. - Remove any dirt. - Clean repaint or replace if necessary. **Step 4** - Complete the documentation. **QUICK FLUSH TANK (QFT) INSPECTION AND CLEANING** -------------------------------------------------- **Step 1** - Using the appropriate ladder, climb up and open the hatch on the top of the Quick Flush Tank. - Ensure the correct PPE is worn (vapor mask may be necessary). **Step 2** - Check the tank for general cleanliness. Look for any presence of dirt and microbiological growth. - Check the condition of the tank lining. **Step 3** - If required, clean the tank by: - Completely drain the tank and close the valves. - Using a mop or appropriate cleaning apparatus, clean the tank. - When cleaning is completed, check that all cleaning items have been removed from the tank before closing and securing the hatch. - Flush approximately some of product through the vessel. This product is then sent for disposal (slops) and not to be returned to the main storage tank. - Reset valves to operating position. **Step 4** - Write the date when inspection was completed on the side of the Quick Flush Tank. **Step 5** - Report any faults that require repairs. **Step 6** - Complete the documentation. *Keep QFT clean and empty when not in use for draining and sampling.* **TANK INTERNAL INSPECTION WITHOUT ENTRY** ------------------------------------------ This procedure will generally be performed when the fuel level is less than 50% so that sufficient light can penetrate the product contained in the tank. 1. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. ### **TANK INTERNAL INSPECTION WITHOUT ENTRY PROCEDURE** **Step 1** - Wearing the correct PPE. **Step 2** - Carefully open the tank hatch. Always follow the proper manual handling procedures. **Step 3** - Position the mirror or torch to reflect the light beam to the floor of the tank to look for any dirt, rust or microbiological growth or significant coating failure. **Step 4** - Check that the Floating Suction is operating freely without the check wire caught up in the assembly. **Step 5** - Report any faults. If inspection reveals microbial growth or buildup of sediment exceeding 1/10 of the area of the tank bottom surface, cleaning must be accomplished. **Step 6** - Complete the detailed documentation. ### **JET FUEL TANK CLEANLINESS ASSESSMENT** - Jet Fuel Tank Cleanliness Assessment Consists of: - Tank visual inspection - MBG test results - Review of routine tank drain records - Review of downstream filtration records, including filter drain, membrane testing results, filter inspection records - Photographs where possible and safe to take them - Historic tank inspection reports and tank cleaning records - Tank Cleanliness Assessment is required to be carried out 5 years **TANK CLEANING** ----------------- - Tank cleaning is a hazardous operation and must be carried out only by qualified personnel following strict procedures under the Permit to Work and Risk assessment system. - Aviation storage tanks can be emptied and cleaned internally every five (5) years. - Tank shall be cleaned when any of the conditions listed under "Cause for tank cleaning" are identified. Cleaning shall be carried out as soon as practical but within 6 months. **Cause for Tank Cleaning** - Tank internal surfaces are dirty, i.e., the inspection reveals microbial growth or build-up of sediment exceeding approximately 20% of the tank bottom surface. - Damage to the lining or tank shell such as peeling, rusting, bulging or deformed lining. - Presence of microbiological contamination, at warning level. - Fuel quality downstream indicates the presence of excessive contamination, e.g., short filter life, poor filter membrane test results or high particle counts (e.g., 18/16/14 which approximates to 1 mg/liter of an average dirt containing rust and particulate.) - The condition of tank drains samples show the presence of excessive dirt or rust or microbiological growth or surfactant contamination. **Particular attention should be paid to the following:** - Evidence of corrosion or damage. - The condition and effective operation of Floating Suctions should be established. - The Floating Suction Check Cable clamps are secure and have not slipped and the cable is not frayed. - Areas where solids and/or water may accumulate on the tank bottom - Tank cleaning may be extended beyond 5 years up to 10 years as long as an annual tank cleanliness assessment is carried out from year 5 onwards and documented and there is no "cause" identified to clean the tank. - Tank cleaning may be further extended until mechanical tank inspection interval, provided it is allowed by local regulatory requirements and the necessary conditions listed below have been met: - Agreement of company management. - Historic tank cleaning and inspection records show that only small amounts of contamination have been found. - For internal visual inspection without entry, the tank internal surfaces can be adequately inspected (i.e., views of the floor and sump are not obstructed by internal baffles, floating decks or blankets, etc.) - Full internal epoxy lining. - No chemicals or cleaning materials that could adversely affect the aviation fuel to be stored in the tanks shall be used. - Detailed records shall be maintained of the types and quantity of sediments found and the condition of the tank interior fittings and coatings. - The dates of the most recent inspection and cleaning should be marked on the tank shell. **TANK BUND AREAS** ------------------- - Should there be a tank rupture or product spill, the Bund will contain the spilled product - Constructed of an impermeable material - Total volume of the bunded area must be able to contain the volume of the largest storage tank in the tank compound area - The bund wall areas should be kept free of vegetation and bund drain - The Bund drain valves shall remain closed and secured at all times except when rainwater is being drained off and a sign stating this must be erected. - Standing water shall be drained from bunds without delay. ### **TANK BUND WALL AND VALVE INSPECTION** **Step 1** - Inspect the bund wall for any cracks. Check the seals around the pipe work are in place and not damaged **Step 2** - Check integrity of seals and materials between concrete slabs **Step 3** - Check for erosion and/or damage from weather, animal excavations or construction and maintenance activities **Step 4** - Check that new construction or maintenance activities have not penetrated the bund floor's impermeable membrane **Step 5** - Check that the bund wall isn't sinking, this is usually indicated by cracks in the wall **Step 6** - Inspect the bund valve, check that its closed and not by-passing due to debris caught in the valve face **Step 7** - Check the Link belt or similar sealing device is intact, secure and tight **Step 8** - All faults must be reported and fixed **Step 9** - Complete the documentation **INTERCEPTOR INSPECTION** -------------------------- - Interceptors are used to trap oil products in wastewater and prevent contamination of the storm water drainage system. - When the sludge in the pits exceeds 125mm in depth, it should be pumped out - Inspect the Interceptor without entry - Interceptor Cleaning -- Do NOT use detergent for cleaning **Step 1** - Check the depth of sludge in the pits. It should not be more than 125mm. **Step 2** - Check the water level in all pits, top up by flowing clean water through a drain. **Step 3** - Check that the water has not become stagnant and a breeding ground for mosquitoes **Step 4** - Clean dirt and debris from collection slabs, do not sweep or hose into drains. **Step 5** - Check the level of waste product in the drum/waste product collection tank **Step 6** - Remove the sludge from the Corrugated Plate and transfer to a waste product drum. **Step 7** - Clean the baffle plates using high-pressured water. **Step 8** - Clean the inside of the hopper using high-pressured water. **Step 9** - Check the condition of the Interceptor. **Step 10** - Refill the hopper with water. **Step 11** - Complete the documentation.