Re: [MW:17273] Test subsea welded-in valve seal

We had the FAT for valve already. But as I sent, in spec required we
have to seal test after weld valve to permanent pipe. That's the
difficulty I have. Many thanks.

On 4/2/13, Bui Son Truong <truongbs70@gmail.com> wrote:
> Dear Mr. Toan,
> Are you working in Vietnam, who is your client, consultant.
> Did they forget testing right after fabrication of spool ?
> Which function and pressure should be tested.
> Regularly you have to cut off pipe and install temporary spool (there are
> inlet, pressur gauge ...) for testing. And then replace by permanent pipe,
> welding joints should be ndt.
> How ever, this action should be follow project's procedure
> I will try find some document for your reference.
>
> Sent from my iPad
>
> On Apr 2, 2013, at 11:09 AM, Nguyễn Văn Toàn <toanvnguyen@ptsc.com.vn>
> wrote:
>
>> Dear Mr.Son,
>>
>> Yes, I'm Vietnamese and nice to see you :).
>> Thanks for your advice but what I need 's spec to refer and how to
>> check the valve seal leaking because the valve is installed in series.
>>
>> On 4/2/13, truong son bui <truongbs70@gmail.com> wrote:
>>> Dear Toan,
>>> Are you Vietnamese ? This is first time I see Vietnamese in this forum
>>> and
>>> is great.
>>> Your problem is simple: after welding, the welded valve may be
>>> inefficient
>>> by heating (shrink, crack ...) by slag. Those cause should make the
>>> valve
>>> be impaired.
>>> Inorder to sure it's functionality has been perfect, you should prepaire
>>> a
>>> temporary spool or hose and hydrolic pump ... for testing according by
>>> it's
>>> functionality. The testing proceduce should be approval by QA
>>> authorised.
>>> Wish success to you.
>>>
>>> On Mon, Apr 1, 2013 at 8:55 AM, toanvnguyen
>>> <nguyenvantoan221@gmail.com>wrote:
>>>
>>>> Dear Experts,
>>>>
>>>> We're doing a PLEM and TPAM project. The type of valves's welded-in
>>>> valve.
>>>> In spec. require as follow: "After fabrication's complete, welded-in
>>>> valves
>>>> shall be subject to seal tests in accordance with the relevant project
>>>> valve specification to demonstrate the valve functionality has not been
>>>> impaired during fabrication".
>>>> Could you pls give me some advice about this kind of tests. Many
>>>> thanks.
>>>>
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>>>
>>>
>>>
>>> --
>>> Bui Son Truong - Director
>>> LILAMA Consultant Co.
>>> Address: 124 Minh Khai street, Hai Ba Trung Dist., Ha noi, Viet Nam.
>>> Fax: +84 3624 9416
>>> Tell: +84 3624 94 15
>>> Mobi:+84 9034 888 39
>>>
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>>>
>>
>>
>> --
>> Best Regards,
>> --------------------------------------------
>> Nguyen Van Toan
>> Piping & Machine Supervisor
>> Structure WS 2
>> - PTSC M&C
>> HP: 0907496198
>> email: toanvnguyen@ptsc.com.vn
>> Skype: toan_ptsc_mc
>>
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>
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--
Best Regards,
--------------------------------------------
Nguyen Van Toan
Piping & Machine Supervisor
Structure WS 2
- PTSC M&C
HP: 0907496198
email: toanvnguyen@ptsc.com.vn
Skype: toan_ptsc_mc

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