UG-44, B16.5 Flanges and receiving inspection documentation

[Hass008]

Hi folks, looking to gather some thoughts.

When a VIII-1 manufacturer receives B16.5 (and B16.47) flanges, what is recorded during receipt inspection, and what type of inspection occurs?

UG-44 requires that B16.5 flanges meet all dimension requirements of B16.5 with the exception of ID. How is this verified, or demonstrated? What objective evidence do you keep on hand to prove you have conducted this inspection?

Of course all markings are recorded. The material spec will be recorded, size, the heat number, mill symbol, etc... But in addition, are all dimensions required per B16.5 recorded? Do you record each dimension, including each bolt hole dimension? Or is it simply assumed that if the markings are acceptable, the flange must meet the dimensional requirements of B16.5 for it's given size and class?

 

[david339933]

I don't record anything, but a check mark on a receiving report for Material/Spec, Size. Basically checking that the required markings are there...and match the PO. See UG-11(c)(5)

 

[The Obturator]

Actual dimensions would be done acc. to a manufacturers QA system by shop floor QC. Whether this is done for each and every flange or every 1 in 'N' is determined by the manufacturers confidence over time of and manufacturer. You most probably will be sourcing from a ISO-9001 company to give you this minimum and it would be covered by a certificate of conformity at minimum, to tell you that, but it would not state the dimensions - there is no need for dimensions and pointless as a flange is a simple inert component. If its found to be wrong whether at your inward goods receiving/inspection or later, it would not fit and then would be traceable back to the manufacturer and his earlier records. Your certificate for flange would at least state the nominal size. rating and material of the flange. ASME B16.5 states that the flange be marked B16 or B16.5 (with or without ASME prefix)to indicate conformity (normally size and rating are stamped on also) You may also request the material to be traceable or even certified by a third party in effect obtaining ISO-10204 type 3.1 and 3.2 certification respectfully. Of course, you can ask for any certification from the supplier, at a price, as you are the customer. This also includes actual dimensions.

Per ISO-4126, only the term Safety Valve is used regardless of application or design.