gentlemen,
prior to the start of the fabrication or manufacturing of separators, tanks, through conduit valves, hot well pumps, for power plants and other mechanical items, we require the fabricator to submit detailed fabrication drawings, for our approval.
in the course of our approval, we...
gentlemen,
greetings again, indeed.
one of our clients is requesting for a technical data sheet and specifications for a submersible pump supposedly for use in a geothermal well, 3500 metres deep, with the temperature ranging from 12-160degC and static pressure at 33.4mpag, flow estimated at...
gentlemen:
we ordered two units, 30-inch motorized gate valves for our system. the valves were leak tested in the country of origin without the motor coupled, and it passed the leak tests in accordance with the requirements of the API 598.
when these valves were delivered and prior to motor...
gentlemen:
relative to my previous posts dated 12 August 2009 and 27 August 2009, wherein we are bidding out the erection of a more than 100MWe wind farm, i would like to solicit your kind advises or insights on which part of the wind turbine will most likely become a maintenance problem within...
in wind turbines:
1. which is more efficient, a 2-blade or a 3-blade?
2. which is more efficient, a blade with a root to tip twist or one with none? at what angle would be more efficient, if ever?
3. when you specify power regulation as either pitch or stall, which would be more efficient?
4...
we are currently reviewing bids from different wind turbine manufacturers and since we specified everything as 'bidder to specify', we have no inclination as to whether these bidder specified items are acceptable.
this is our first time to prepare specifications, bid it out, have it...
gentlemen:
we had a separator delivered with its anchor bolt holes at fifteen degrees offset. installing the separator would result in a fifteen degree offset of all the nozzle connections as the poured foundation including the installed anchor bolts were based on the design drawings. the ASME...
gentlemen,
we have a fluid with a high ph that if left unchecked, could create scaling in our piping system. in order to bring down the ph level of the fluid, sulfuric acid with ph at 3 was injected into the pipeline. this sulfuric acid then mixes with the fluid to attain the ph to the level of...
sir:
Table 3, Tensile and Hardness Requirements, page 9 of the ASTM STD A182/A 182M - 99, Standard Specification for Forged or Rolled Alloy-Steel Pipe Flanges, Forged Fittings and Valves and Parts for High-Temperature Service provides among other things, the Elongation in percent minimum.
We...
gentlemen,
we designed the open discharge pipeline of our bellows type, pilot operated safety relief valves with a horizontal leg of 1600mm and a vertical leg of 1200mm. will this long discharge piping system have any impact on the valve's closing pressure? or re-set pressure?
the authorized...
we have had problems with solids in our pressure vessels ranging in sizes 0.625mm max with specific gravity of 4.58 to 5.30. the fluid is dry steam with max mass flow of 13.23 kg/sec, design pressure at 14.06 kg/cm2g, design temperature at 197.7degC, separation pressure of 11.72 kg/cm2g...
i am not sure if this is the right thread but i haven't come across a quality assurance/control thread as of yet in this forum.
part of our requirements for welder's qualifications, besides being tested and qualified in accordance to ASME IX and the WPS is this section of our in-house...
we have a stainless steel, vertical, cylindrical, tank made out from ss316 plates with a thickness of 5mm, including a corrosion allowance of 3mm. the capacity of the tank is 25 cubic meters and contains H2SO4, with the applicable code as API 650, with design pressure as atmospheric and design...
Appendix A, Table A-1 of the ASME B311, General Notes (1) says that "This material (API 5L Gr. B) is not acceptable for use on boiler external piping. General Notes (13) also states "this material is not listed in the ASME Boiler and Pressure Vessel Code, Section IX."
Having specified our pipes...
we required repairs on a 48-inch diameter stub-in weldment and the last repair passed the ndt. however, the system was put on line after the repairs passed the ndt so we can minimize generation losses.
what will be the effect of not stress relieving the joint with four repairs? will a leak or...
we needed to cut-in a 24-inch diameter pipe to an existing 48-inch diameter pipe thru a 45degree lateral connection. a cut-out was necessary with reinforcing plate for the connection.
the cut-out on the existing 48-inch diameter, unfortunately, hit the single longitudinal weld of the pipe...
we need to install (asap!) a tee connection. however, the tee welds will require pwht (as the thickness is 25.4mm) but we don't have the time as the plant shutdown cannot be extended.
what we did is that we tapered the ends of the tee connection (three ends) to a thickness where pwht will not...
we need to install (asap!) a tee connection. however, the tee welds will require pwht (as the thickness is 25.4mm) but we don't have the time as the plant shutdown cannot be extended.
what we did is that we tapered the ends of the tee connection (three ends) to a thickness where pwht will not...
i was tasked to review the applicability of spiral welded pipes (swp) to our system as these swp's are cheaper than our requirements, which are seamless and/or single longitudinal welded pipes.
consider our design parameters (depending on the fluid):
6.60 mpag at 282degC;
7.72 mpag at 294degc...
i am again tasked to review the applicability of spiral welded pipes (swp) to our system as these swp's are cheaper than our requirements, which are seamless and/or single longitudinal welded pipes.
consider our design parameters (depending on the fluid):
-6.60 mpag at 282degC;
-7.72 mpag at...
