Pipe Cleanliness Standards?

[Desdichado]

Does anyone know of a standard for ordering pipe to a certain cleanliness? We have been receiving "dirty" pipe, but have no specifications which define clean or dirty.

We are also having issues keeping the plastic caps on the ends for storage, so if anyone knows a good alternative I would apreicate some advice.

Thanks,

-Ben

 

[BigInch]

Pipe shall be delivered free of scratches and dents, with clean bevels, and without any evidence of oils, grease, films, mill scale and rust.


We will design everything from now on using only S.I. units ... except for the pipe diameter. Unk. British engineer

 

[USAeng]

if you buy it to an astm spec then they should provide it in that condition to the spec... if you have aditional req then you need to specify when ordering.

try plugs instead of caps? go to caplugs.com and call them and ask what to use... they might be able to help

 

[vpl]

Since you posted in the pipeline forum, I'm going to guess you're not concerned with ordering "clean room" type electronic parts, but rather general pipe. This might be a bad assumption on my part.

The following is from withdrawn ANSI Standard N45.2.2 "Packaging, Shipping, Receiving, Storage, and Handling of Items for Nuclear Power Plants." It applies to general piping, so it might be useful, even though you probably aren't at a nuclear plant. I highlighted a few words, because I don't know how clean is clean enough -- that will depend on your end application.

Under Shipping, the standard stated:

(1) Items, just before packaging, shall have been inspected for cleanness according to the requirements specified in the purchasing document. Dirt, oil residue, metal chips, or other forms of contamination shall have been removed by approved cleaning methods. Any entrapped water shall have been removed.
(2) All openings into items shall be capped, plugged, and sealed. Weld end preparations shall be protected from corrosion and physical damage.
(3) Items subject to detrimental corrosion, either internal or external, or contamination shall be suitably protected.

Under Reeceiving there was a lot of guidance on what to look for. When it came to "cleanness" the standard had the following:
"Cleanness. Visual inspection to assure that accessible internal and external areas are within the specification requirements for dirt, soil, mill scale, weld splatter, oil, grease, or stains. If inspection for cleanness was performed prior to sealing and shipping, and inspection upon receipt indicates that there has been no penetration of the sealed boundary, then inspection for internal cleanness is optional.

What BigInch posted would likely be a reasonable statement to go in the purchase spec.

Patricia Lougheed

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[CaracasEC]

During purchasing of piping materials especially if your buying bulk ones for a project you should have these minimum specifications: 1.Specification for purchasing of bulk materials 2. General Inspection Requirements 3.Specification for Color Marking for Piping Material Specification. Specification for Positive Material Identification (for alloy pipes) 4. Packing and Marking Specification which will include how you want your pipes to be deliver at site. This specification will be base on Pipe Codes such ASME B31 series, ASTM etc.