NDT/NDE After Fabrication and Delivery of Filter Housing

[KRR_SG]

I have supplied a filter housing to a customer is Australia. Its a small housing that is installed as pre RO Filtration Housing.

At the time of fabrication, there was agreement with the customer that no RT/PT (NDE) would be required and a hydrotest would be enough since these are mass produced items. However certain new guidelines from the end user have necessitated some form of ASME recognized NDT/NDE on the finished product.

I would like to check if according to ASME VIII Div I,

- Is NDT/NDE is a mandatory requirement by ASME for small housings
- After the housing has been completed and shipped, is it still possible to perform any NDE/NDT, do note that the surface of the housing is already elctrolyzed,

Basic details of the housing are given below;

1- RO Pre Filter Housing
- Material of Construction SS316
- Surface Finish Inside: Acid Wash/Outside: Electrolyze
- I/O: 8” ANSI
- Drain: 1” BSPT
- Vent: ½” BSPT
- Shell Thickness: 3mm
- Design Pressure: 1Mpa
- Max Operating Pressure: 0.7 MPa
- Temperature: Ambient
- Vessel Volume: 280 L

Looking forward to your reply.

 

[oknow]

Check with your AIA for the NDE issue. Suggest you review the AS Standards to verify new build compliance. There may be requirements above those in ASME.

 

[KRR_SG]

Thanks for the response oknow, I am checking on those requirements too.

Can you let me know if NDE can be performed (which ones) on the finished housing with electrolyzed surface

 

[r6155]

You can perform Ultrasonic Test.

Regards
r6155

 

[oknow]

KRR SG,

Refer to your design documents for the required NDE. Consult with your AIA (if Code Stampq2đed). The Code Stamping and the MDR may require some changing/revision

 

[DekDee]

I would like to check if according to ASME VIII Div I,

- Is NDT/NDE is a mandatory requirement by ASME for small housings

Surely this is something you confirm before you ship the component - not afterwards !!!


At the time of fabrication, there was agreement with the customer that no RT/PT (NDE) would be required and a hydrotest would be enough since these are mass produced items.

If ASME VIII Div 1 compliance is required then what your customer says they require is irrelevant

 

[KRR_SG]

Thanks all.

We are getting UT performed on the housing.

HI DekDee, with regards to your comment "If ASME VIII Div 1 compliance is required then what your customer says they require is irrelevant", may I know where exactly in ASME VIII Div I I can find this? If somehow I can prove to customer that ASME doesn't require NDE for this housing, I wont have to do it.

Regards.

 

[DekDee]

KRR SG,
You have totally misunderstood my response.
A client can request more than the applicable code - they cannot request less.
If you have built something supposedly in accordance with ASME VIII Div 1 then you should have tested it in accordance with ASME VIII Div 1.
That is what I meant by your customers comments being irrelevant - if ASME VIII Div 1 requires NDE/NDT then you should have done it.
Regards,
Shane

 

[Don56]

Who designed the vessel? Was NDT part of the design requirements or not?

 

[KRR_SG]

It was designed by an outsourced vendor and NDT was neither a design requirement nor a vendor requirement during design stage.