SA516 Gr70 plates having different markings are acceptable for ASME ustamped Pressure Vessel

[Mhaskar Aly]

Dear Experts

We wanted to use SA516 Gr70 plate from DANSTEEL (MTCs’ are attached) where original marking on plate is as follows

UR

LR EH36 S355K2+N CE; refer the attachment

(SA516 65/70MTLTV is not punched on plate; but the marking on plate is traceable to given mtc…

Mtc shows Specification as ASME SA516 65/70 LR EH36 S355K2+N

Mill has issued letter regarding modification of marking as ASME SA561 65/70 MT LTV…(refer attachment)

We internally released these plates as marking on plate is traceable to MTC…further there is letter from Mill regarding the marking.

Kindly advise can we use this plate for ASME U Stamped Pressure vessel job 

 

Ali

[Shabbir Ahmad]

Ali,

 

You can reveiw the MTC with latest SecII and certify if all the content of MTC meets the code  requirements. Mentionging MTC has been revewied with ASME SEC II Edition---- and found acceptable and same cane be recertified by the AI.

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[rudolf saldanha]

Hi,

Not an expert at all but just my 2 cents.

Sec II, SA 20 - 13 clearly states the required markings. The key words are "SHALL". If this job is for audit purpose, I will definitely not go for it. But if it is a regular production the AI's approval may be sought. Finally the onus is on the manufacturer as far as the integrity of the vessel is concerned.

 

[Mhaskar Aly]

Dear friend,

 

Thank you for your advise...

 

Can following clause of SA20 will work...

13.4 Subdivided Plates:

13.4.1

By agreement between the purchaser and the

manufacturer or processor, each subdivided plate (a plate

separated from a master plate) shall be legibly marked with

the name, brand, or trademark of the organization that

subdivided the plate plus a code traceable to the required

markings, provided that the information required in 13.1,

cross referenced to that code, is furnished with the plates.

 

 

Thanks

 

Ali

[kannayeram gnanapandithan]

unstamped vessel no AI is involved, this can be recertified

[rudolf saldanha]

Hi,

In my opinion No. this clause is for plates that is purchased offcut or Coil.

However I would like to point out, the MTC states ASME SA516. 65/70, but does not confirm the edition that it has followed to produce the plate. Isnt this a point of concern? Please read 19.1 of SA 20.

I definitely feel experts will share more on this.

 

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