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Recent content by metboss

  1. metboss

    Welding Procedure Specification (WPS) for the base metal AISI 8630(weld overlay cladding

    Hi All, We have recently received a Welding Procedure Specification (WPS for Weld overlay cladding with Inconel: ERNiCRMO3) from our supplier indicating the base metal as AISI 8630 with a yield strength range of either 60 KSI or 80 KSI. However, the Procedure Qualification Record (PQR) is...
  2. metboss

    Welded v/s Single body Tubular Mandrels

    Mandrel will not transmit any torque/drilling force and also, not subjected to any rotational force. It will be lowered and anchored at pre-defined depth and Drill bit will be passed through its concave curvature (hole) for directional drilling. It will be subjected to only Drag force while...
  3. metboss

    Welded v/s Single body Tubular Mandrels

    Hi All, We have ordered one Drilling Tool (Whipstock) which should be made of single piece Tubular mandrel. But supplier has come up with a deviation request that the supplied Tool will be of welded type instead of single body type due to concave curvature configuration & associated machining...
  4. metboss

    Low alloy steel welding with Carbon steel

    Hi all, We want to weld a Drilling tubular material with Vanes (rectangular shaped blades). Tubular material T-95 grade (API 5CT) of size 13” OD to be welded(fillet weld) with AISI 1040 carbon steel material of size 100 mm length x 15 mm thickness (rectangular bars). What should be pre-heat...
  5. metboss

    Repair WPS

    Thank you all for your insight. We have decided to go ahead with the original WPS (original production weld) for repair too as "essential variable & welding process (where weld repair required i.e. SMAW)" are same. Thank you again for valuable time in responding to my query.......
  6. metboss

    Repair WPS

    Hi All, We have one weld repair job and our contractor submitted the repair specific WPS. But, they submitted the original PQR which is applicable for production welding WPS. The details are as: Repair welding WPS (process SMAW and SAW) no PWHT, code ASME IX Production...
  7. metboss

    Fluorescent dye and Wetting agent for Hydro test medium (water)

    Thanks SPD. The required hydro test will be done on Wellhead equipment and Gate valves. The wetting agent and dye are generally mixed with testing medium (water) and as per Client's information, the objective is to enhance the sensitivity of test.
  8. metboss

    Fluorescent dye and Wetting agent for Hydro test medium (water)

    Hello, Our client specification calls for hydrotesting with water containing “client approved type/concentration of wetting agent” and fluorescent dye. As per my understanding, fluorescent dye is used to enhance the sensitivity of test as we utilize it in Dye penetrant examination(surface...
  9. metboss

    Material selection for H2S and CO2 application

    Thank you Sen and SJones for your valuable feedback.
  10. metboss

    Material selection for H2S and CO2 application

    Thank you Sen, We have been using the Tungsten Carbide (GV70D/GV 50H) hard-facing since many years even bit stringent sour service applications and had no issues. Our concern is on raw material selection for Seat pocket which was machined out from Valve body (material grade AISI 4130) and Seat...
  11. metboss

    Material selection for H2S and CO2 application

    Dears, In our upstream application, one of the Gate Valve of Wellhead equipment is found to be leaking after 3 years in service. Upon retrieval and post disassembly inspection, it was observed that seat pocket area, and seat were corroded with a significant metal loss. Also, there is evidence...
  12. metboss

    API 17D Gate Valves

    Thank you jmec87 and gerhard for your feedback. It is now accepted by end user. After assembly, FAT will be done with third party witness. Moreover, it is not going to be permanently installed for Sub-sea application. After intended operation, it will be retrieved.
  13. metboss

    API 17D Gate Valves

    Hi, We have placed the order for Sub-sea API 17D Gate Valves with API Monogram requirement. We are informed by the supplier that Gate Valve will be supplied as per API 6A design with Hydraulic Actuator (as per API 17D). However, this Gate Valve Assembly will not be monogrammed due to mix-up of...
  14. metboss

    API 60K MATERIAL REQUIREMENTS FOR API 10000 VALVE

    In API 6A, there is no reference to TRIM material's mechanical strength requirements for a specific rated working pressure like what it is specified for Body/Bonnet/End Connectors in Table 7 of API6A. For Trim material, it shall be as per Manufacturer's (OEM's), written specification based on...
  15. metboss

    Gate Valve Actuator Leak

    Hi All, “Our hydraulic actuator assembled Gate Valve” started leaking during operation. During the preliminary investigation, it was found that the maximum hydraulic oil working pressure for actuator is 3,000 psi whereas applied inlet pressure was 4,000 psi. However, after dismantling and...
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