Handling and Transportation of Concrete Coated Line Pipes

[Mehdi6409]

Hi everybody
Can you please help me to find a write up on handling and transportation procedure for concrete coated sub sea line pipes? I have surveyed API 5LW (Transporatation of line pipes on barges and vessels) but nothing is expresses on this issue.
Thanks

 

[rconner]

I have noticed you had not yet received any response to your post. While of course there could be more applicable references given your arguably more rigorous service, I know some general guidance/wording for handling mortar-coated steel pipes is contained in AWWA C205, CEMENT–MORTAR PROTECTIVE LINING AND COATING FOR STEEL WATER PIPE—4 IN. (100 mm) AND LARGER—SHOP APPLIED. Sec. 4.1.3 Manufacture of this standard states, “During the entire period of the application of the lining and coating and the curing thereof, the pipe section shall be carefully supported and handled to avoid damage to the cement mortar. If a pipe section must be moved, this procedure shall be done to protect against damage. Any damaged portion of the lining or coating shall be cut out and replaced.” Also, Sec. 6.1 General of this specification states, “Care shall be exercised during loading, hauling, and unloading to prevent damage to any of the components of the completed pipe. Pipe and specials shall be suitably braced, supported to provide sufficient bearing area to prevent damage to the coating, and tied to prevent shifting or distortion of the pipe during transportation.”
Though this guidance re water pipes might give you some ideas, there certainly might be more applicable specifications or guidance documents, as I would think offshore oil/gas pipe installations are likely/particularly challenging, and as mortar coating systems might vary some more per other specifications/between applicators, and for that matter pipes themselves differ in diameter, length, thickness, weight, internal bracing schemes etc. It thus might also do well to obtain any more specific advice from the specific mortar coating applicator and/or installers etc. experienced in dealing with such pipes in the field (as one would think they might have the most experience in at least the handling of the coated pipes).

 

[hot428ford]

I'm not and engineer , But I have worked in the pipeline construction field since 1975 , Before that I went to work on the pipeline with good old Dad .. concrete coated pipe is pretty tough stuff the thicker the concrete seam to crack easy is any rubbing takes place during transport. berdaro price in Gavlveston , TX. does most of the coating down here. I know on the Kern River line ( 400 miles 36") they did not put anchor pattern on the coating & the concrete would slide on the pipe.Energy transfer put on 14 mils of FBE then 14 mils ARO with a anchor pattern ..Then concrete !!! Good product.. As a young man setting in pipe on a lay barge the 30" w/8" of concrete barged out to us would not stack over 4 high .. We only used wooden timbers between layers. wrapping the outside with plastic after the concrete is installed helps a lot.. Field applied are using flashing & plastic chairs to hold metal flashing the correct distance ( for desired thickness) works for your weight factor & is the cheapest . .but rough out side and softer.. Key out of OK. goes around the country putting on concrete.. They put most of it on the 280 miles of 42" earlier this year in WY. for Kinder Morgan..

Rusty Henson Pipeliner ..
Needs help with my new project !!
Texas is nice in the winter..

 

[rconner]

It sounds like ...ford has recounted some substantial experience, and hope Mehdi is still around! I think coating company ford was referring to however was perhaps instead "Bredero" Price or Bredero Shaw (so any search might work better with that spelling?)