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Hi, Can anyone advise if there is a general requirement to individually test the NPSHr for each pump of a batch of pumps when undertaking the head / capacity testing? Is it acceptable to base the NPSH values on calculated values and evidence from previous similar pumps that were tested? any...

the best industry standard for design related to offshore lifts is DNV 'rules for planning and execution of marine operations'all the big offshore contractors use this as standard. You should try to get your hands on it. If its a shackle or similar (for 50Te) it should be proofed at 1.22 x SWL+20Te

the head of liquid is given by: pressure / (density x gravity)

we have similar equipment on our rig, although we are ABS classed, we had to get ABS certification. DNV will probably require certification as the class rules are pretty similar with regard to pressure vesels.

Hi, I have a carbon steel pipe spool with a circumfrential butt weld. Very close to the butt weld there is another circular double pad welded to the pipe using a fillet weld. The butt weld and fillet weld overlap around the circumfrence of the pipe, the Butt weld was competed probably a few...

Hi does anyone have experince of using ST 52 or 34CrNiMo6 for a marine thruster shaft? which is best?

HI, does anyone have experience of using ST 52 or 34CrNiMo6 for marine thruster shafts? which is best?

hi jeremy, there are many companies that do this, check http://www.rigzone.com/search/p/services/consulting/project_management/

Thanks oxilume, do you inculde water for showering, black and grey water, water for lanundry and galley/cooking use in this estimate?

Hi, Does anyone have norms for fresh water consumption (per person, per day) for marine/shipboard applications. In patricular for an FPSO but any vessel type would appreciated.

Hi, I need to run a 2000cubic meter/hour capacity pump thats located on a barge moored at a quayside. The suction inlet is 30" and is located on the bottom of the barge which is at 7m draught,i.e 7m below the suface of the sea. There is limited clearance between the suction and the...

Hi, I need to run a 2000cubic meter/hour capacity pump thats located on a barge moored at a quayside. The suction inlet is 30" and is located on the bottom of the barge which is at 7m draught. There is limited bottom clearance and there is sediment on the bottom that i want to avoid...