Earl and the Aboveground Storage Tank Forum for fuel tanks, plastic tanks, fuel oil storage tanksWelcome to the aboveground storage tank forum, a bulletin board dedicated to tanks, fuel tanks, plastic tanks, fuel storage tanks, and above ground storage tanks (AST) API650, API653 & UL142 aboveground storage tanks (AST) and chemical plastic tanks. Remember the forum is made up of volunteers from experts to beginners. Unfortunately, we cannot allow free commercialism that promotes products, services, or sites.
 
Sponsored by:
Contact us about advertising
Earl   AST Forum  

Fabrication at Lay down area and transport to site

Wednesday, January 31, 2018   By: Santosh [1918] 0 Stars
Dear Experts,

Tank having diameter 10.6 mt x 9.6 mt height site fabricated.
Tank is fabricated at laydown area at site & transported to construction site.
While transporting laydown area to construction site 4 nos lifting lug used.
My concern is that how to ensure tank ovalitty issues within API 650 acceptable limits.
Also my basic question is , whether tank lifting with such diameter is good practice ?

Thank you in advance.

Regards,
Santosh.

Post a Reply...
Viewed 311 times

Thursday, February 01, 2018   By: karsadi [652] 4 Stars
Maybe I do not include experts tank, but in my experience of building a tank, according to my understanding as a tank designer, before deciding to consider some things related to the standards followed and the profit and loss.

So if you intend Tank is fabricated at laydown area at site & transported to construction site. Clearly the tanks are built not following API 650 standards, and for easy please follow the Annex J, Shop-Assembled Storage Tanks, so you do not be afraid of things beyond the tolerance of the tank.
To analyze further and in detail, you should clearly mention the type of tank to be built and others data.

Back to your post, maybe it can be solved but why you make a complicate yourself?
I would rather give a preliminary comment to define your design philosophy, so theres no question in mind that why and whats the reason, you do that?
That is my temporary comment and if you are still unclear I wait for the next comment.

Post a Reply...
Viewed 270 times

Monday, February 19, 2018   By: Santosh [1918] 0 Stars
Thanks for your prompt reply.
Obviously tank is designed according to API 650 standard only considering site fabricated & conventional erection method.
Actually the decision was made by our site team based on below reason.
The late foundation handover which will be helpful to the project if we parallel start the progress at the laydown area rather than awaiting the foundation.
This decision was made by site team at very later stage & now asking design team to review the lifting lug design calculations to proceed their transport activity from laydown area to actual site location.

Also I discussed with site team & they said they have provided base frame support below the fabricated tank bottom plate & they will place this tank with base frame on trolley with help of 4 nos lifting lug /spreader beam and will transport to site location.
Additionally they provided 4 nos sling lashing lug welded inside tank shell to bottom plate.

Even with the above arrangement whether there is any chance tank out of ovality limit ?

Thank & Best Regards,
Santosh

Post a Reply...
Viewed 185 times

Thursday, February 01, 2018   By: DavidR@Fast.net [39] 5 Stars
Lifting a small tank like this is not a very big deal. Im assuming it is built and moved standing up. I worked with a group that picked and relocated several tanks with cranes after a hurricane / flood moved them. I would lift using short purely vertical slings, to a spreader bar, to the hook. That way only vertical loads go into the tank and maintaining roundness is not a problem. Designing the rigging is straightforward, designing the lifting lugs is also not difficult. See standard below-the-hook codes like ASME B30.20 and ASME BTH-1 for some guidance, use good engineering judgment, do a proof test on your rigging, carefully plan and document your lift and research local codes. You will have to support the bottom with a few cables so it does not sag down and pull in the shell, this design is also pretty straightforward. Depending on how far you have to move it, you could also float it there or support it on beams and drive it there on trolleys.

Post a Reply...
Viewed 255 times

Monday, February 19, 2018   By: Santosh [1918] 0 Stars
Dear DavidR,

Noted. Thank you very much for your valuable feedback.

Best regards,
Santosh.

Post a Reply...
Viewed 200 times

Published on ast-forum.com

 

Featured
Atmospheric Design Pressure
By: Fathi [46]

The whole story is to avoid brittle fracture=

Test temperature shall be equal or warmer than Minimum Metal Design temperature at Test pressure.
------------------

I would limit my minimum testing temperature for a tank (or even for a vessel or a piping system) by the =

Temp = maximum of [ Min(lower shell) , Min(shell# 2) ....Min (Upper shell) ]

For a Shell# i the minimum is function ( of shell tickness , Material group ) and this can be found in API 650 , Fig 2-1

A similar a....   Read All
Advertising Info - Click Here!
fiogf49gjkf0d

It's hard not to look at this ad at least once, then you go to the next page an notice it again. Maybe you will not read the message, but you will be thinking about the brand and we call that brand impressions.

We remove bots from your brand impression count too!

Imagine your static or animated display advertisement placed here, and if that is not enough you can include text too to expound on the virtues of your services and or products.    In addition, you can benefit by using our new advertisement feature to have your video included in your ad space.  Wow, make an infomerical with text and a display by combining all features to enhance the readers or audience's experience using your brand.  Ads can be much more than a static display ad. Here is an example of how your video could be used or position in this ad space:

 

Caption: Public domain video from Cashco who shows their products being used on a storage tank to maintain safe pressure to prevent a catastrophic event from implosion or explosion.  The author of the video is not an advertiser and is being used to show how the video ad can be of value to the reader since you have already being viewing the video.  It is hard not to think about the authors brand after viewing the video ad.  This is the benefit of Branding.

 

 

 

A Long-game that Earns Tomorrow's Sales


 Click on this Promotional Advertisement to Contact Us Today!

Good Branding Puts Your Brand or Company in the Front of a Decision-Maker’s Mind for a Purchase either Months from Now or Five-Years in the Future.

Good branding makes your brand or company the leader in a crowded field of other brands or companies vying for your potential or existing client's attention. 

An invitation to the buyer's table to negotiate potential sales from $thousands to $millions of dollars in any of these: Systems sale, Capital Equipment, Upgrades & Modifications,  Repairs, or Capital Project becomes easier now with a recognized brand that thinks forward by brand advertising.

Your advertising will cost you an unbelievable low amount.  As an example this advertising space only cost $600 per month and you receive up to 10k-impressions per month and we only charge you for just 6,000-impressions per month for this spot. You get valued impression for we filter out bots when counting your impressions.

Below is some of our demographic data for ast-forum users will speak for itself:

Bus Sector Percent   Education Percent
Manufacturing 18%   College+ 70%
Power Gen 2%      
Chemical 4%      
Petroleum 40%      
A&E 6%      
Construction 12%      

Our network works hard for you with placements for full coverage on part of the network, or full network placement.  Brand yourself today and don’t miss-out on being invited to your client or future client's table because they forgot you.  Be the leader they will remember and be part of their capital project.  Tomorrow’s clients are your future.

 

Advertising and Marketing Agency for the ast-forum
PE Marketing, LLCBranding.jpg
Sponsors/Advertisers
Industrial Training School - Basic Electricity
 
ITS - Maintenance
 
Industrial Training School - Steel Making Tutorial
Steel Maiking Tutorial
Industrial Training School - Instrumentation
5% Off Enter TV0901
Confidentiality, Disclaimer & Policy
AST FORUM
© 2001 to AST (Aboveground Storage Tank) Forum, All Rights Reserved.
PE Marketing LLC is representing the steamforum for advertising and marketing
Valid XHTML 1.0 Transitional