MARINFLOC SERVICE BULLETINS

Transcription

1 MARINFLOC SERVICE BULLETINS Bulletin No Service Bulletin Product Issued Status 1 Back flushing cycle TD Not Active 2 Back flushing procedure TD Not Active 3 OCM Sample Line TD Not Active 4 Oil Sensor and flock tank TD Not Active 5 Reposition of flow switch WBS Not Active 6 Service Air TD+CD+WBS+SDWU Active 7 Sampling facilities TD Not Active 8 General Maintenance TD + CD Active 9 Installation of Whitebox WBS Active 10 General Maintenance CD Active 11 General Maintenance WBS Active 12 Water Temperature TD + CD Active 13 Back Flushing of filters CD Active 14 Non return valves for air distribution CD Active 15 PID Valve CD Not Active 16 OCM Display CD + WBS Not Active 17 Filter Material TD+CD+ASTS Active 18 Pipe Arrangement for Whitebox WBS Active 19 Port State Instructions CD Active 20 Hose for flock booster CD Active Document updated

2 Service Bulletin No.: Priority: Red Alert All Marinfloc Equipment* Using General Service Air Since some, even if a very small number, pneumatic operated valves have jammed/seized because of a high concentration of impurities in the actual ship(s) General Service Air System, we do recommend all owners of subject Marinfloc Equipment*, to install a combined Water Trap - Air Filter. The Equipment* concerned is: -Emulsion Breaking Bilge Water Cleaning System (EBBWCS) Mk I and Mk II models. All types. -Sludge De watering Unit (SDwU).All types -White Box System (WBS). All types -Emulsion Breaking Pre Treatment (EB Pre-T) All types Note! All our EBBWCS Mk III CD models and of all types have from start of production been equipped with a Water Trap Air Filter Further: All other equipment concerned, which will be delivered from our production plants after December 1 st 2004, will also be equipped with a Water Trap - Air Filter. Since the quality of the General Service Air Supply obviously does vary from ship to ship, the arrangements above will still allow us in just having one common Air Supply to all pneumatic functions and air consumers at the same Marinfloc System/Unit(s). Marinfloc AB Version 1.0/ /BC/PL/HLP

3 Service Bulletin Priority: Medium No General maintenance System Applicability: MARINFLOC EBBWCS of all types Important: It has been found necessary to point out how important the general maintenance is! Many problems can be avoided if attention is drawn to the regular maintenance. Please read the chapter named Maintenance and Back-flushing of filters in the Operator s Manual. (If you don t find the manual onboard you can, and we strongly recommend you to, order one or more copy/copies from our Service Department, service@marinfloc.com). We especially want to remind about/point out following things: When using CIP cleaning fluids/liquids try to avoid to get this fluid into the bilge wells, bilge tanks and sludge/waste oil tanks as far as possible! They don t only emulsify Bilge Water; they also emulsify WO/Sludge very strongly which in the end makes it difficult to dewater the WO/Sludge. It is very important that the BW can be heated to approx. 55 C! This is to get a good result with the separation of the free oil and to achieve a good flocculation progress in the floctanks. In order to avoid unnecessary change of filter material it is of very big importance that the filters are steam regenerated approx. every 100 hrs of operation. (It s not enough only to back-flush with warm water.) All the previous service bulletins and other important information, as e.g. updated lists of approved chemical and flocculants, can be found on our website: Don t hesitate to contact us if any questions or problems! You can easily reach us by phone: +46 (0) , fax +46-(0) or via to service@marinfloc.com. -Our mission is clear ~ a clean sea! PL//Kada Adress/Address: Tel: +46 (0) Org nr/corporate identity No: Industrivägen 10 Fax: +46 (0) SE Varekil marinfloc@marinfloc.com Momsregnr/VAT No: Sverige/Sweden Internet: SE

4 Service Bulletin No.: Priority: Medium Alert Installation Precaution, Recommended Maintenance System Applicability: White Box Installations Overboard Lines Important: The installation and proper operation of a Marinfloc White Box at your overboard line assures the operator that treated bilge water in excess of 15ppm will not be discharged overboard. Many Operators have elected to install the Marinfloc White Box using their crew or appointed subcontractor. The ease of installation encourages this practice, however, recent reports of graphitization in the horizontal discharge line warrants the issuance of this Service Bulletin. When installing the White Box, take special consideration to the difference in piping material leading into and out of the White Box. As the flanges and pipes of the White Box are 316L stainless steel, attention and preparation to the inlet and outlet piping must be taken to minimize any corrosion due to the difference in material composition. It is recommended that the flanges be suitably grounded either side of the White Box. Furthermore, Marinfloc AB utilizes 316L stainless steel piping in the White Box to enhance durability and longevity of the system as well as reducing pipe degradation which may be caused by seawater contamination of the bilge tank. It should be noted that during port state inspections, vessels are often asked to open their overboard line for examination. It has been reported that graphitized deposits from metal pipes may be misconstrued as oil residue. In addition, oil residue on the overboard pipe in the range of 2-3ppm is not uncommon as water treated to levels below 15ppm may have residual levels of oil which will adhere to the overboard line. Checking and maintaining the quality of the overboard line should be included in the vessel s preventive maintenance schedule and history of same available for Port State/Class review. Version 1.1/ /PL/BC/HLP/AA

5 Service Bulletin Priority: Medium No General maintenance System Applicability: MARINFLOC CD units Important: According to Marinfloc Operators Manual for CD models under Maintenance it is described how to perform a steam regeneration of the filter material by increasing the temperature on the back flush water heater to 99 o C. As it is possible to push out filter material from the filter step, down to the bilge water tank if the temperature rises to 100 o C, it is very important that the temperature of the regeneration water never exceeds 90 o C All the previous service bulletins and other important information, as e.g. updated lists of approved chemical and flocculants, can be found on our website: Don t hesitate to contact us if any questions or problems! You can easily reach us by phone: +46 (0) , fax +46-(0) or via to service@marinfloc.com. -Our mission is clear ~ a clean sea! PL Adress/Address: Tel: +46 (0) Org nr/corporate identity No: Industrivägen 10 Fax: +46 (0) SE Varekil marinfloc@marinfloc.com Momsregnr/VAT No: Sverige/Sweden Internet: SE

6 Service Bulletin Priority: High No General maintenance System Applicability: MARINFLOC CD, TD and White Box units Important: Only regarding customers with Rivertrace Smartcell oil content meters. It has recently come to our attention that the oil content meter may go into error mode if the manual clean unit in the cell is removed with the power on. The message Cell breach will appear in the display and the cell is then damaged and will need replacement. There has been no information in the Rivertrace manual nor on the actual oil content meter up to this date that indicates this problem so we advice that the cell is clearly marked that it must be powered off before removing the manual clean unit. The easiest way to switch off the power to the oil content meter in a White box is to put the fuse F2 in the control cabinet into off position. All the previous service bulletins and other important information, as e.g. updated lists of approved chemical and flocculants, can be found on our website: Don t hesitate to contact us if any questions or problems! You can easily reach us by phone: +46 (0) , fax +46-(0) or via to service@marinfloc.com. -Our mission is clear ~ a clean sea! PL Adress/Address: Tel: +46 (0) Org nr/corporate identity No: Industrivägen 10 Fax: +46 (0) SE Varekil marinfloc@marinfloc.com Momsregnr/VAT No: Sverige/Sweden Internet: SE

7 Service Bulletin Priority RED No Corrosion Problems related to High Bilge Water Temperature TD & CD Units. As described earlier in Service Bulletin No 1, there is some major reasons why corrosion problems occur: The system has not been properly Back Flushed with Fresh Water after having completed a full Bilge Water Cleaning- and Discharge Operation. The temperature of the Bilge Water to be treated has been > 55 C Salt water (high Cl content) standing still in the filter stages. We would like to once again remind about the importance of those reasons. Recently we have encountered a side effect of what can happen if the temperature of the bilge water is more than 55 C. The mounted sacrificial anodes (Marinfloc AB s Article No 15110) mounted in filter steps are exposed to local pitting and need to be replaced. The process occurs very rapidly. What happens is that when a sacrificial anode made by zinc and reinforced by iron is exposed to a corrosive media which temperature is higher than 55 C the polarity of zinc and iron switches, in other words the iron sacrifices before the zinc. If the sacrificial anode only would be made of solid zinc without iron reinforcement the anode would sacrifice locally and the anode would break. Thanks to the iron reinforcement we are using, the scarification of the anode will be even over the total length of the anode. But if the temperature is too high this compensation effect will not work and local pitting will occur and even the iron reinforcement will break down. If this happens the anode need to be replaced. We would also like to point out how important it is to follow the maintenance period stated in the manual. The zinc anodes should be checked according to the table below (Table 1). Before the anode is mounted back in place, please check that the gasket is good. Do not use thread tape on the anode thread, then the zinc anode risk to be isolated from the filter step structure and will not work. Table 1.Inspection interval of the sacrificial anode: After every four week or (whatever comes first): Model 0,25 0,5 1,0 2,0 3,0 4,0 5,0 Discharge m Page1(2) Marinfloc AB/OL Head office MARINFLOC AB Business Relations Tel: Industrivägen 10 Tel: Fax: SE Varekil Fax: marinfloc@marinfloc.com Sweden Web:

8 On the old Marinfloc TD units it is important to check the floc tanks regularly. What happens is that when the system has been in operation for a while the galvanized surface in the floc tanks breaks down and the tank start to corrode. This is not a rapid process but it is important to take it in consideration. Our recommendation is to protect the floc tanks with sacrificial zinc anodes when the galvanized surface starts to be broken down. To break down the galvanized surface will take everything from 2 to 10 years depending on the water quality treated by the Marinfloc system. All the previous service bulletins and other important information, as e.g. updated lists of approved chemical and flocculants, can be found on our website: Don t hesitate to contact us if any questions or problems! You can easily reach us by phone: +46 (0) , fax +46-(0) or via to service@marinfloc.com. -Our mission is clear ~ a clean sea!- Page 2(2) Marinfloc AB/OL Head office MARINFLOC AB Business Relations Tel: Industrivägen 10 Tel: Fax: SE Varekil Fax: marinfloc@marinfloc.com Sweden Web:

9 Service Bulletin Priority RED No 13 rev Settings of flow & time for back flushing of filters CD Units. Background: We have learnt that it is very common with pressure fluctuations in the fresh water systems. This will sometimes result in too low flow during the back flush sequence which also means that there can be remains of aggressive water after the sequence. This can result in corrosive attacks on the filter steps. If the pressure is too high it will result in a too high flow rate through the filter steps which will increase the possibility to push filter media down to the bilge water tank. Today a manual adjustment / calculation must be carried out when the pressure radically changes. We have learnt that this seldom happens and that the initial commissioning setting is used even if there is a variation in the input water. Corrective actions: In order to ensure correct flow during the back flush sequence we have added a flow indicator to our recently released units. If you have a CD unit which is not equipped with this flow indicator Marinfloc AB will supply one free of charge ex. Works, Varekil Sweden. Please submit owner, ships name and unit serial number when claiming one. We also recommend an adjustment in the timer settings in order to ensure a proper rinse result (see table below). Back flush flow controller (Item 143) Page1(2) Marinfloc AB/ Head office MARINFLOC AB Business Relations Tel: Industrivägen 10 Tel: Fax: SE Varekil Fax: marinfloc@marinfloc.com Sweden Web:

10 Flow of the back flush water: Model: 0,25 0,5 1,0 2,0 5,0 Flow: (l/min) New back flush timer settings: CD 0,25 CD 0,5 CD 1,0 CD 2,0 CD 5,0 Timer 2 Back flush tnk1 400 sec 400 sec 400 sec 600 sec 1400 sec Timer 3 Back flush tnk sec 800 sec 800 sec 800 sec 1400 sec Timer 4 Back flush tnk sec 800 sec 800 sec 800 sec 1400 sec All the previous service bulletins and other important information, as e.g. updated lists of approved chemical and flocculants, can be found on our website: Don t hesitate to contact us if you have any questions or problems! You can easily reach us by phone: +46 (0) , fax +46-(0) or via to service@marinfloc.com. -Our mission is clear ~ a clean sea!- Page 2(2) Marinfloc AB/OL Head office MARINFLOC AB Business Relations Tel: Industrivägen 10 Tel: Fax: SE Varekil Fax: marinfloc@marinfloc.com Sweden Web:

11 Service Bulletin Priority RED No 14 rev Non return valves for protection of air distributor CD Units. Background: We have experienced damaged to the air distributor in the electric cabinet caused by water penetration on some vessels. This has been caused by leakage of the non return valve #137 on the circulation tank #52. See picture below: Non return valve # Corrective actions: In order to avoid and correct this problem Marinfloc recommend that the non-return valve is checked for leakage and replaced if necessary. Marinfloc also recommend that an extra non return valve is added to the hose after the air adjustment valve #136 for extra safety. See picture below: 4mm non return valve Page1(2) Marinfloc AB/ Head office MARINFLOC AB Business Relations Tel: Industrivägen 10 Tel: Fax: SE Varekil Fax: marinfloc@marinfloc.com Sweden Web:

12 Non return valve ¼ #137 article number: Non return valve 4mm for hose article number: If you have a CD unit which is not equipped with this 4mm non return valve for hose or with thread see picture below Marinfloc AB will supply one free of charge ex. Works, Varekil Sweden 4mm non return valve with thread All the previous service bulletins and other important information, as e.g. updated lists of approved chemical and flocculants, can be found on our website: Don t hesitate to contact us if you have any questions or problems! You can easily reach us by phone: +46 (0) , fax +46-(0) or via to service@marinfloc.com. -Our mission is clear ~ a clean sea!- Page 2(2) Marinfloc AB/magl Head office MARINFLOC AB Business Relations Tel: Industrivägen 10 Tel: Fax: SE Varekil Fax: marinfloc@marinfloc.com Sweden Web:

13 Service Bulletin No th of September 2012 Wrong filter material Service Bulletin No. 17 concerns the following Marinfloc Products: Marinfloc Oily Water Separator: Marinfloc CD and Marinfloc TD Marinfloc Sewage Treatment System: Marinfloc ASTS Background: Marinfloc recently received complaints from a customer regarding the performance of the first filter step. It would continually clog and when inspecting the filter material, it was hardened like cement. To investigate the root cause of the problem, Marinfloc attended the vessel and boiled the filter material several times and ultimately emptied the filter material. The root cause was found to be filter material other than Aqualite which was procured and used in filter step number one. While the filter material looked the same, it obviously was not and caused our customer significant problems. The filter material Marinfloc is using in the first filter step is named Aqualite. Aqualite has a unique structure with large pore volume and a very large active surface. Another very important benefit is the resistance to mechanical wear that is unique for the product. Other material may look the same in the beginning but will over time deteriorate and will be more or less like dust. The dust will clog the filter and decolorize the bilge water. The crew will sacrifice a lot of time to correct those problems and if wrong material is used the problem will occur again. Marinfloc does not recommend any other filter material in the first filter stage than Aqualite (Sand in the bottom and Aqualite on top). Marinfloc cannot guarantee the performance of the equipment and cannot support any other filter material. Moreover Aqualite is specified in the type approval for the equipment and using a different material is a violation of the type approval. For your convenience and safety, please check that you are using filter material supplied by Marinfloc or any of our distributors or agents. The Marinfloc Article Number for Aqualite is: and the material are delivered in 22 kg bags. Marinfloc Polishing Filters 1. Sand, 2. Aqualite, 3. Activated Carbon Don t hesitate to contact us if you have any questions or problems! You can easily reach us by phone: +46 (0) or via e mail to service@marinfloc.com.

14 Service Bulletin Priority RED No 18 rev Operation of MAG flow meter affected by piping arrangement to WhiteBox. System: WhiteBox system models from serial number and systems where the MAG 5000 flow meter have been retrofitted. Background: Following reports of flow meter issues in various White Box installations, Marinfloc has identified that some WhiteBox Systems have been installed with a piping arrangement that may significantly affect the operation of the MAG 5000 flow meter. This type of flow meter cannot measure correctly if an air pocket develops within the measuring pipe. Marinfloc is releasing this service bulletin for clarification and explanation of the problem and to provide guidance for corrective actions. The MAG 5000 flow meter must be installed at a lower point in a pipe line in such way that it is completely filled with water at all times. Corrective actions: In order to ensure correct measurement by the flow meter, it is important that the WhiteBox is installed so that no air pockets can develop inside the WhiteBox piping. The configuration of the inlet pipe does not affect the flow meter, but the outlet pipe from the WhiteBox must be configured as in the example below and must raise a minimum of 400 mm to ensure correct flow measurement. After this initial elevation the pipe can continue downward as convenient. If the WhiteBox is already installed with a descending pipe, a gooseneck with a height of 400 mm needs to be installed to ensure correct flow measurement. Page1(2) MARINFLOC AB Head office Tel: Industrivägen 10 Fax: SE Varekil marinfloc@marinfloc.com Sweden Web: Marinfloc AB/ Service Bulletin No 18 rev1

15 Correct installation of the outlet pipe from WhiteBox >400mm Outlet Inlet Flow WhiteBox flow direction right to left Inlet Outlet >400mm Flow WhiteBox flow direction left to right Don t hesitate to contact us if you have any questions or problems. You can easily reach us by phone: +46 (0) , fax +46 (0) or via e mail to service@marinfloc.com. -Our mission is clear ~ a clean sea!- Page 2(2) MARINFLOC AB Head office Tel: Industrivägen 10 Fax: SE Varekil marinfloc@marinfloc.com Sweden Web: Marinfloc AB/ Service Bulletin No 18 rev1

16 Service Bulletin No 19 rev Operation instruction of Marinfloc CD at Port state inspection. System: Marinfloc CD standard. All models with oil content meter type Deckma OMD 2005 fitted. Start procedure: 1. Turn on the heating, air and water supply. Clean the OCM and flush it. Confirm that reading is 0 ppm on fresh water and close the valves on the sampling line to avoid dirty water into meter during start up. Confirm the alarm delays on the OCM by pushing and then Set alarm 1 to 10 sec, and alarm 2 to 1s. 2. Start the separator to warm it up. Turn all switches into AUTO and process switch in ON. System starts and start delay is active for 20s. During start up the valve nr 58 will be open until water temp reaches 40 ºC inside circulation tank. 3. Ensure that ship s overboard valve is closed and open the port state control valve so that overboard flow can be visible through this valve into a funnel or sight glass. 4. When the water has risen to 40 ºC the water will continue to flocculation tank and then run for recirculation (139) for 15 min. This is to ensure clean water to the filters. If the water is clean in the recirculation sight glass, the filtering can also be started by manually turning the S3 switch to filtering. 5. When filtering (140) has started it is normal with high ppm during the first minutes after start up. It is then recommended to take a sample of the filtrated water before opening the valves on the sampling line to OCM. Take sample at outlet of 3 rd filter (From the drain valve or test cock at valve 27) Water must be very clear! 6. Confirm that the flow switch (96) is not active when the sample valves are closed. 7. Open the valves on the sampling line and ensure that flow switch activates, (96) is lit. 8. If flow switch is activated and ppm value is below the set point, overboard valve shall now open. Confirm a visible flow from the port state control valve 9. Close the sample valves and confirm that overboard valve closes. Visibly confirm that there is no flow from the port state control valve. Page1(2) Marinfloc AB/ Service Bulletin No 19 rev1 MARINFLOC AB Head office Tel: Industrivägen 10 Fax: SE Varekil marinfloc@marinfloc.com Sweden Web:

17 Check of automatic stopping device and alarm. 10. Turn Process switch into OFF. Flush OCM and ensure reading 0ppm. Close sample valves before and after OCM. 11. Simulate flow through the flow switch by loosen the screw on its sensor and adjust it until indication (96) is lit. Sensor 12. Restart separator on the process switch. Overboard valve (6) will now open and there shall be flow from the port state control valve. 13. Open the lid of OCM and pour a small amount of high ppm liquid into the OCM (Formazin etc.) 14. When ppm value increases above the set point, overboard valve (6) shall Flow switch immediately close and the return valve (7) open. Visually confirm no flow from the port state control valve. After 10 sec separator shall stop and give alarm to ECR. Important! The above described adjustment is only for testing of the automatic stopping device. The flow switch purpose is to ensure sample flow through the OCM at all times. This is a requirement in MEPC 107(49) regulation (see below extract) The arrangement on board ship for the extraction of samples from the 15 ppm Bilge Separator discharge line to the 15 ppm Bilge Alarm should give a truly representative sample of the effluent with an adequate pressure and flow. It is therefore the operator s response to ensure that flow switch is reset back to its original position after test. Reset back to normal operation. 15. Turn process switch to OFF. Flush the OCM and confirm reading of 0 ppm Adjust the flow switch back to its original position and make sure (96) is not lit. 16. Reset the alarm 1 to 4 min. 17. Open the sample valves and start the separator on the process switch. Confirm overboard valve is opened when there is flow through flow switch (96) and ppm value is below set point. Always keep the system in good condition. Flocculation must work at all times. Get familiar with the system and practice the above instruction regularly and before inspection. This will simplify the port state inspections. Don t hesitate to contact us if you have any questions or problems. You can easily reach us by phone: +46 (0) , or via e mail: service@marinfloc.com. Page 2(2) MARINFLOC AB Head office Tel: Industrivägen 10 Fax: SE Varekil marinfloc@marinfloc.com Sweden Web: Marinfloc AB/ Service Bulletin No 18 rev1

18 Service Bulletin No 20 rev Flocbooster hose kit for dosage pump (PN 17037, 17039) System: Marinfloc bilge water separator CD model standard. All models with Gamma L dosage pump (Flocbooster) with Part No and Description: Under particular circumstances, such as prolonged operation interval, pumping of the Flocbooster may become inefficient. To improve pump efficiency, we recommend upgrading the pump suction line with the below described KIT having Part Number The pump will work more efficiently regardless of the viscosity of the chemical and reduce the need of replacing the complete pump hose KIT. KIT Description (PN ) : Page1 Marinfloc AB/ Service Bulletin No 20 rev1 MARINFLOC AB Head office Tel: Industrivägen 10 Fax: SE Varekil marinfloc@marinfloc.com Sweden Web:

19 Procedure: Dismantle the existing suction hose from the Flocbooster dosage pump and replace it with the 8x5 mm hose and connection set provided Replace the strainer in the foot valve with the washer as per below picture Page 2(2) MARINFLOC AB Head office Tel: Industrivägen 10 Fax: SE Varekil Sweden Web: Marinfloc AB/ Service Bulletin No 20 rev1