Re: [MW:17549] Name Plate Hydro Test pressure

Hydrotest pressure on nameplate is not a Code requirement. If the client wanted the actual Hydrotest, then that's the one you have to stamp on the nameplate, as long as the AI accepts it.

 

 

On Wed, Apr 24, 2013 at 3:02 AM, prem_nautiyal26 <prem_nautiyal26@yahoo.com> wrote:

But the client and PMC approved drawing shows the sketch of name plate on sheet 2 wherein hydrotest pressure is mentioned ! 

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veera raghava kommisetti <kommisetti@gmail.com> wrote:

ASME Name plate does not have Test Pr. column. It is only in MDR, you need to record (actual).

If it is on Manf. name, it has to be actual test pr.

On Mon, Apr 22, 2013 at 8:11 PM, prem nautiyal <prem_nautiyal26@yahoo.com> wrote:

Hi friends

 

Vendor has fabricated a process equipment with skirt support as per ASME Sec VIII Div.1

 

The height is 11 metres and ID is 4.5 metres.

 

The vessel is going to be erected at site in vertical position with skirt supports.

The HydoTest Pressure specified on drawing for Vertical position is 14.5 Kg/cm2g.

 

However Due to shop height restriction vendor is not able to conduct Hydro Test in Vertical position and  has done hydro test in horizontal position  adding the head difference ( for every 10 m height - 1 Kg/cm2g head to be added).

So the actual Hydro Test Pressure conducted in shop is at 15.5 Kg/cm2g.

Also he has mentioned the corrected hydro test pressure i.e. 15.5 Kg/cm2g on Name Plate.

Nothing is mentioned about this corrected pressure in drawing or QAP.

 

Is it correct ?

 

Does the fabricator have to mention the actual tested corrected  hydrotest pressure on Name Plate or the Pressure mentioned on drawing.

Please give code reference.

 

Regards

 

Prem Nautiyal

 

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