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Recent content by 13392017

  1. 13392017

    Explosive Decompression concerns with Flexible Graphite

    Guys, Please give me a shed of light. What is the Explosive Decompression ? Regards, RK
  2. 13392017

    Impedance Mismatch

    All, I need your guidance in my problem following. We would like to buy a communication cable to transmit the signal from signal source to the final actuator. The signal transmitted by mean of MODEM. The distance from the source is about 23 km. We already have about 10 km cable, and we would...
  3. 13392017

    120 V 2 phase system

    All, Please give me a shed of light on following things. What does it mean 120V 2 phase system, is the 120 V is line voltage or line phase ? how we can have this system ? If i have equipment required 120 V 1 phase system(with neutral, how do i connect to the power system above ? Cheers, RK
  4. 13392017

    Short Infield Umbilical Installation in Deep Water

    Kat, Is your SUTA attached to the umbilical or not? How big the SUTA is ? Perhaps you can utilize an umbilical basket which can deploy with SUTA. However, if the MBR of the umbilical is big, this method is not practical. Currently i have some problem as well in designing the SDB, we think that...
  5. 13392017

    Subsea Hydraulic Systems Design Text

    All, Actually the subsea control system vendor have designed the system as what AcesHighJoker advice. Not only the valve, they already put some Hydraulic accumulator subsea. The intention is to maximize the response time. The umbilical only supply the hydraulic pressure to Subsea Accumulator...
  6. 13392017

    Subsea Controls Communication Question

    Hi Chief, I don't understand with what you are saying. Till now, i have no idea if there is subsea production control system using microwave signal to communicate with subsea control module. Could you provide an information little bit more on this ? Regards, 13392017
  7. 13392017

    Subsea Controls Communication Question

    Hi Kat, I believe, what you saying here is the communication between Master Control Station and Subsea Control Module through the MODEM. The vendor of subsea control system usually use Half duplex communication and using industry standard FSK NRTZ, however, the vendor usually already have their...
  8. 13392017

    JIC Swivel with Anti Rotating Lock

    Guys, At the moment, i am looking for the mention subject product. Can you provide me an information on the technical and manufacturer ? Thank you in advance Regards, KR
  9. 13392017

    Looking for Umbilical Information

    Hi Kat, I think you can go to website of Umbilical manufacturer such as DUCO or JDR.For the installation you can go for SUbsea7, Technip or Stolt. Regards, RK
  10. 13392017

    Heat generation in Hydraulic System

    Hi jbthiel, Correct, the pump goes to near zero flow. But, it's depend on pressure inside system. In braking mode, the application has some mechanism to decrease or increase operating pressure depend on required braking torque. So, oil will always circulate through oil cooler. Regards, RK
  11. 13392017

    Why Subsea ?

    Thanks MortenA, Of course if we choose subsea completion, we will not need any jacket. But the cost to have some subsea completion are very high if you compare with others, especially if in life of field we have some problem with the well. To rent the vessel, they daily rate is amazing...
  12. 13392017

    Why Subsea ?

    Gents, Please share your knowledge on selection of subsea completion instead of platform/dry tree, etc. Regards, 13392017
  13. 13392017

    Heat generation in Hydraulic System

    Gents, Appreciate your valuable help on my problem. We select variable vane pump with pressure compensated, because between subsystem/aplication has different requirement on flow rate and pressure. At that time, we think once the pressure reach the setting, the flowrate will be zero. To...
  14. 13392017

    Heat generation in Hydraulic System

    Hydromech.. Setting pressure for system relief valve is 1500 psi. For the pump, we used Rexroth PV7-1X/25-30RE01MC0-16, max.displ. pump is 30 cm3/min; hyd motor Rexroth MP 80/610-F-202, displ. 80 cm3/min; Directional control valve, Atos DHZO-A-0530S5/PA-NPT/7, max. flow 70 l/min. Regards, RK
  15. 13392017

    Heat generation in Hydraulic System

    Hydromech,Budt I will answer one by one, 1. when the brake operate, there is other system/application which pull some wire/cable from wheel of system. This braking system objective is to give some constant tension, which is set by hydraulic brake pressure. This constant tension made by some...
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