Search results for query: *

The standard is clear that the Vendor shall be responsible for the design of the supports - with or without PTFE on the slide bearing saddle - and the Purchaser for the design review. For further reading on PTFE slide plate assembly, please visit the website of Carpenter & Paterson Ltd. or...

If test medium is water, pay special attention to the chloride content and SRB bacteria count of the hydrotest water and lay-up the system after hydrotesting. Poor hydrotest & lay-up procedures for stainless steels might result in MIC and SCC.

Consider too the access for construction or maintenance equipment between the proposed LPG pipeline and the existing HC pipeline. As a safety precaution, excavate away from the existing pipeline.

API STD 660

Do you mean slide bearing support? Yes, horizontal exchangers shall be fixed on one saddle and free to move in the longitudinal direction at the other saddle.

Additional reading: API RP 1102 "Steel Pipelines Crossing Railroads & Highways" NACE RP 0169 "Control of External Corrosion on U/G or Submerged Metallic Piping Systems"

Considering tie-in design is in place - that is, location, piping material class and valve specifications are defined. The next step is to prepare the Method Statement which comprises of P&IDs, isometric drawings, SIS, procedures [isolation, depressurization, draining, cleaning, tie-in execution...

A typical valve data sheet will give you information pertaining to the valve design and materials. The design section may show the operating data, valve type/sub-type, pressure class, size, end connections, operator type, design standard, etc. On the other hand, materials section may show your...

*Not recommended when the service temperature is above the limitation of the non-metallic gasket application. *Not recommended in flammable services.

The most conservative design is to weld a Weldolet to the main pipe and flange to the Weldolet.

If the piping material requires PWHT hot tapping is not recommended.

That info (about vorticity) put my research in the right track. But I still haven't found what I'm looking for.

Case 1: 4" dia. x 100 US gpm x 155 F x 15 psig x oily water Case 2: 18” dia. x 11,666 US gpm x 155 F x 259 psig x raw water The straight pipe run upstream (ex. 5D) and downstream (ex. 2D) of check valves is required to make sure that there are no sudden cross-sectional changes (by tees...

We have drain (normally closed) and pressure instrument connections in the straight pipe run upstream and downstream of check valves. Do these fittings (ex. weldolets, reducing tees) cause turbulent flow? What mathematical formula will prove the configuration is turbulence-free? Regards,

Branch connections (i.e. for drain and vent connections) on reducers, elbows and tees are discourage but is not prohibited; however, the Designer must prove (i.e. by calculation) that the design is safe.

As far as I understand, industry code/standards allows up to one-thread less to consider flange bolt & nut to be fully engaged. Thank you for all the inputs.

@ Duwe6: 1.5 mm thk Micarta insulation sheet is available in the storehouse; we are using it to insulate SS piping resting on clamped shoe supports. Can we use the said insulation sheet as substitute to the thick Pikotek washers?

Water service x 630 psig/205 deg F x 8" dia. x ASME B31.4.

During installation of a SS control valve it was found that the hex nut is in contact with the body of the control valve. This happened because an insulating gasket (i.e. dissimilar material and raw water service) is used in the flanged connection; thereby, it increased the bolt length causing...

NFPA 12 requires the installation of pressure relief device in closed piping sections of the fixed CO2 extinguishing system. My question is: Does the standard requires a block valve in the relieving path of the pressure relief device?