Re: [MW:10028] Tank Peaking/Banding Issue, API 650

Off course

That code is mentioned for materials(may be at the time of fabrication
) purpose not for construction ...

Suresh

On 2/26/11, Abdul Wahab <awengineer@gmail.com> wrote:
> Dear Sir,
>
> Thank you very much for replying, but problem is that API 650 by itself
> refering to mentioned standard like ASTM A 6M etc.
>
> Please advice,
>
> Abdul Wahab
>
> On Sat, Feb 26, 2011 at 3:24 PM, Suresh <bobsuresh24@gmail.com> wrote:
>
>> Hii Abdul ,
>>
>> You should follow API 650 for tank consrtuction , not ASME code .
>>
>> In my best of my knowledge , you need to refer to API 650 and follow
>> tolarances which was mentioned in API 650 .
>>
>> Thank you
>>
>> Suresh
>>
>> On 2/26/11, Abdul Wahab <awengineer@gmail.com> wrote:
>> > Dear All,
>> >
>> > I am Abdul Wahab working in KSA as QA/QC Inspector, I have an issue
>> > which is confusioning me. Below there is copy of Paragraph of API 650.
>> > Plumbness, peaking, banding & flat spot discussed in this & tolerances
>> > are provided but along with tolerance of API 650, also refering to
>> > ASTM standards, those standards have tolerances aproximately a double
>> > values as compared to API 650 Tolerances. Do we need to follow those
>> > as ASTM is not a tank construction code but provide guidance about
>> > matrial manufacturing,testing & handling etc.
>> >
>> > We have Banding Value for 6 mm Plate of 13 mm max, can we consider a
>> > dent as a banding problem in tank shell.
>> >
>> > Please see below & advice.
>> >
>> > 7.5.2 Plumbness
>> >
>> > a. The maximum out-of-plumbness of the top of the shell relative to
>> > the bottom of the shell shall not exceed 1/200 of the total
>> > tank height. The out-of-plumbness in one shell course shall not exceed
>> > the permissible variations for flatness and waviness as
>> > specified in ASTM A 6M/A 6, ASTM A 20M/A 20, or ASTM A 480M/A 480,
>> > whichever is applicable.
>> >
>> >
>> >
>> > 7.5.4 Local Deviations
>> >
>> > c. Flat spots measured in the vertical plane shall not exceed the
>> > appropriate plate flatness and waviness requirements given in
>> > 7.5.2.
>> >
>> > If there is any confusion to understand, please ask.
>> >
>> >
>> > Abdul Wahab
>> > Mechanical Inspector
>> > KSA
>> >
>> > --
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>> >
>>
>>
>> --
>> Thanks & Best Regards,
>>
>> Suresh
>>
>> Mobile No: 91-92 92 905 905
>>
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>>
>
> --
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> For more options, visit this group's bolg at
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> The views expressed/exchnaged in this group are members personel views and
> meant for educational purposes only, Users must take their own decisions
> w.r.t. applicable code/standard/contract documents.
>

--
Thanks & Best Regards,

Suresh

Mobile No: 91-92 92 905 905

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The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.