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  • Users: GAL02
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  1. GAL02

    BOLT TENSIONING

    Dear all, Good morning! Hopefully all of your doing well and taking care during the pandemic. Well! I have a query regarding the usage of Bolt tensioning, as a general practice we do torquing to achieve flang joint integrity from smallest to larger size bolts but what is the guideline or...
  2. GAL02

    Torque calculation?

    Hi! How do we calculate Torque to be apply on bolts? If Bolt size, length & Nut size known to us. bolt size: 2 1/2" Length : 17" Pl. Revert With regards
  3. GAL02

    Good afternoon to all! I came acro

    Good afternoon to all! I came across term 'SRWN' RF flange during PV Dwg.overlook. As I know LWN flange as 'Long weld neck flange' but what is 'SRWN' flange? Is it Short Radius Weld Neck (SRWN)Flange? Pl. revert. With regards
  4. GAL02

    Safety valve Gagging

    Dear all, Good afternoon ! AS we know for Boiler testing purpose we are doing gagging of Safety valve. I Search Google for any videos related to it which can put more light on it but not found. Can anybody explain in detail or any doc. or video can be share? Pl. revert. With regards
  5. GAL02

    EMERGENCY: BALL VALVE BEHAVIOUR UNDER HIGH PRESSURE

    Dear all, Good afternoon ! Following is the situation for subject valve; Valve: Ball Valve Pressure seal bonnet gasket Connection: BW Class: 2500 # Gear operated (Ratio:275:1) Service: Synthesis gas Temp: 50° C Pressure: 200 Kg/ Cm2 Position: Full open (Suspected 95 % open) Problem: GEARBOX WORM...
  6. GAL02

    GATE VALVE BEHAVIOUR UNDER PRESSURE

    Dear all, Good afternoon ! Regarding the subject matter Gate valve following is the situation for which I need your expert & experienced feedback. We are working over Steam Super Heater (High Pressure High Temperature service) who's outlet isolation Gate valve not getting operate i.e. Open or...
  7. GAL02

    How to calculate check valve test pressure, 1) Metal seat & non metal seat 2) High pressure &amp

    Good evening to everybody! How to calculate check valve test pressure, for the following criteria 1) Metal seat & non metal seat 2) High pressure & low pressure. As per Valve testing STD.API 598 finally it directs to ASME B16.34 which is not clear. All of you are requested to elaborate the...
  8. GAL02

    HP SUPERHEATED STEAM LINE WELDING JOINT

    Dear all, Good afternoon ! We are working over outlet of Super heater Gate valve (12" X 10" X 12" X 2500# BW)on superheated steam line (12", Des.Pressure 130 Kg/ Cm2, Temp.: 540°C ) this valve having equalizing line (1")with 1" Globe valve. (Line is from Valve body to Valve body), My...
  9. GAL02

    DIFFERENCE IN STELLITED & Gr. F6 TRIM MATERIAL IN VALVES

    Dear all, Good morning! Regarding the subject matter always I found different opinion can anybody firmly differentiate "what is STELLITED MATERIAL TO A182 Gr. F6 MATERIAL?" Awaiting Reply. with regards
  10. GAL02

    Compressor High Vibration

    Dear all, Good morning! Regarding the subject matter we r facing sever problem of Compressor casing vibration while start up. The short coverage is as follows. : We have a 10 Compressor's (OEM :GE) the one which is frequently gives serious vibration (0.8 to 3.9 mm/s)is of Natural Gas compressor...
  11. GAL02

    POSITIONING OF Butterfly Valve FLAPER (OPEN POSITION) (MOV operated)

    Dear All, Good evening! Regarding the subject matter due to malfunctioning of MOV limit switch Gearbox of B'Fly. valve broken. Now after repairing of G.Box how we can position valve flapper in Open Position. Valve can't drop as it is on main header of Sea water cooling, required Turnaround if...
  12. GAL02

    PROS AND CONS - HIGHLY CREVICE CARBAMET SERVICE - HIGH PRESSURE ISOLATION VALVE MAINTENANCE

    Dear all, Good morning! As mentioned in subject we have high pressure Angle Globe isolation Valve of stripper (8" x 2500 #) in highly corrosive Carbamate service whose bonnet (RTJ) gasket is leaking and we don't have spares in hand, packing ring as well as RTJ ring. I have the option as...
  13. GAL02

    CORRECTIVE MAINTENANCE : BENDING OF VALVE STEM / SPINDLE

    Dear All, Good afternoon ! If any Plug spindle/ stem of valve (short length,1Ft approx.)is got detectable / Visual bend from head onwards What is to be done to it to make it straight if material is SS316L (Urea Grade / stellated / Chrome plated)? With regards
  14. GAL02

    Valve Maintenance in absence of spares

    Dear all, Good afternoon ! Regarding the subject matter for any type of valve which may be passing, trim damaged, block etc. and if we don't have spares in hand then what is more preferable 1) to open without spares in hand? 2) to keep as it is till spares available? pl. discuss the...
  15. GAL02

    VALVE TESTING

    Dear all, Good morning! Regarding the subject matter I have check valve 12" & 6" 2500 Class (Swing type) on Sy.Gas Compressor discharge line. According to the API 598 allowable passing (Leak) rate is 0.25 M3/Hr. As we test 6" valve it was on the threshold of allowable leak rate but continuous...
  16. GAL02

    Mateial selection / Deviation of Material

    Good Morning all ! what is the basis of material selection & standard for any equipment? If deviation of material observed in RFQ & Quotation for any equipment or spares what should be the approach in such scenario? With regards Girish
  17. GAL02

    Stratagy for Preventive Maintenance (Valve)

    How to set frequency for valve maintenance, specially PM. Operation cond'n & physical status is visually monitor but what about internals? Suggest the strategy for valve Preventive Maintenance.

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