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Iranian Chill Thread

It's first time I'm hearing about phased array being used in NDT methods, that's interesting. How does it work? About radiography, if I'm not mistaken, gamma always works better than x-rays isn't it? I knew about that Acoustic Emission test, it's very awesome, first time I read it, I couldn't believe it's possible to detect sound waves emitted from a corrosion process or a micro crack moving inside the structure.

Visual inspection is much easier, but shouldn't they give less money for it?
So you don't use MT method much right? since it can only detect faults and cracks a few millimeters under the surface and not those deep in the structure.
Phased Array is very specialized. Even UT technicians with 20 years in the field have to go back to school to get retrained. The basic idea is that the transducer sends multiple beams into the object instead of the usual solitary beam sent with a traditional FLAW method. It decreases time and you also don't need to move the transducer around. You just place it and the beams do their thing. It's also more accurate. Phased Array is slowly taking over both UT and Radiography.
Frost & Sullivan: Replacement of Radiography by Phased Array Ultrasonic Testing Drives Global Ultrasonic NDT Equipment Market

With X-Ray the problem is portability. When you're on the field or 70 feet up on a tank, you can't use an X-Ray machine. X-Ray uses electricity of course and it's less dangerous, but not at all portable. With gamma you have a 50 pound camera and you can take it anywhere. The problem is radiation and the possibility of a major accident is always present.

Acoustic Emission is extremely cost effective. The way it was explained to me was that it can be done on live tanks with all sorts of products inside. Traditionally you'd have to empty the tank, clean it, send in visual inspectors and finally send in the gamma/MPI crews. That's millions upon millions of dollars. With AE you just place the microphones, connect them to amplifiers and voila! You can give the client a report on the condition of the tank without emptying the damn monster. They can decide if it needs to be refurbished or not, but the inspection didn't cost them an arm and a leg. This means more inspections can be done as companies won't be afraid of costs anymore. The guy that was explaining it to me said the sound of a water drop was the same as a canon going off 1 meter in front of you!!! They could pin point where that water drop originated from too. Amazing.

MT is done a lot in fabrication shops actually. But it's mostly done on misc stuff. When it comes to pipe it's mostly gamma (to meet code requirements). We do MT on pipe that can't be X-rayed though (i.e. pipe smaller than 2 inch or pipe with a fucked up weld that can't be shot). MT is used a lot during shut downs (when plants and refineries shut down for annual maintenance).

Visual inspection is the highest paying method actually. It's not even close. Quality control people, lead inspectors etc... all need to be certified to different visual inspection codes. Even engineers can't go straight into visual inspection. For example, in order to get your API 510 certification, this is what you need to do:

API 510 Pressure Vessel Inspector Program - Qualification Requirements

API certified inspectors make more than engineers here.
 
I got good news for me, apparently yesterday meeting was good

The meeting where you waited 3 hours right. :lol:

Congratz. :yahoo:

Edit: Is Persian Cat, really from your country.. or it is just named like that..

I haven't seen any cat like it.. i mean it is super relaxed....

 
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The meeting where you waited 3 hours right. :lol:

Congratz. :yahoo:

Edit: Is Persian Cat, really from your country.. or it is just named like that..

I haven't seen any cat like it.. i mean it is super relaxed....

They're not this extreme, but they do originate in Iran. The Brits took a lot of long haired cats from Iran centuries ago and started breeding them for their hair and flat faces. The ones with the extremely flat faces are specially bred.
 
Phased Array is very specialized. Even UT technicians with 20 years in the field have to go back to school to get retrained. The basic idea is that the transducer sends multiple beams into the object instead of the usual solitary beam sent with a traditional FLAW method. It decreases time and you also don't need to move the transducer around. You just place it and the beams do their thing. It's also more accurate. Phased Array is slowly taking over both UT and Radiography.
Frost & Sullivan: Replacement of Radiography by Phased Array Ultrasonic Testing Drives Global Ultrasonic NDT Equipment Market

With X-Ray the problem is portability. When you're on the field or 70 feet up on a tank, you can't use an X-Ray machine. X-Ray uses electricity of course and it's less dangerous, but not at all portable. With gamma you have a 50 pound camera and you can take it anywhere. The problem is radiation and the possibility of a major accident is always present.

Acoustic Emission is extremely cost effective. The way it was explained to me was that it can be done on live tanks with all sorts of products inside. Traditionally you'd have to empty the tank, clean it, send in visual inspectors and finally send in the gamma/MPI crews. That's millions upon millions of dollars. With AE you just place the microphones, connect them to amplifiers and voila! You can give the client a report on the condition of the tank without emptying the damn monster. They can decide if it needs to be refurbished or not, but the inspection didn't cost them an arm and a leg. This means more inspections can be done as companies won't be afraid of costs anymore. The guy that was explaining it to me said the sound of a water drop was the same as a canon going off 1 meter in front of you!!! They could pin point where that water drop originated from too. Amazing.

MT is done a lot in fabrication shops actually. But it's mostly done on misc stuff. When it comes to pipe it's mostly gamma (to meet code requirements). We do MT on pipe that can't be X-rayed though (i.e. pipe smaller than 2 inch or pipe with a fucked up weld that can't be shot). MT is used a lot during shut downs (when plants and refineries shut down for annual maintenance).

Visual inspection is the highest paying method actually. It's not even close. Quality control people, lead inspectors etc... all need to be certified to different visual inspection codes. Even engineers can't go straight into visual inspection. For example, in order to get your API 510 certification, this is what you need to do:

API 510 Pressure Vessel Inspector Program - Qualification Requirements

API certified inspectors make more than engineers here.

Thanks for all the useful information.
I'd also like getting in to NDT and inspection business if I don't achieve my first goal (composites and nano composites), it's very interesting. It's a relatively easy job (compared to many other engineering activities which usually require hard works with not much of money), it can be enjoyable and also usually comes with good payment.
 
Thanks for all the useful information.
I'd also like getting in to NDT and inspection business if I don't achieve my first goal (composites and nano composites), it's very interesting. It's a relatively easy job (compared to many other engineering activities which usually require hard works with not much of money), it can be enjoyable and also usually comes with good payment.
Yes and know. If you're a technician it's easy, but in Canada the regulations are very stringent. Even if you're a rocket scientist you have to start at the bottom and get the required hours before you can go do your exams in order to become a tech. The whole process usually takes 1-2 years. So you're looking at 3-4 years for all the methods and before you're comfortable. Money is there from the start though. NDT in other countries doesn't pay much. I know for a fact that NDT techs in the US get paid a fraction of what we get.

Most engineers go into visual inspection and quality control if they decide to get into inspection. Look into API certifications.

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lool
Iran rooz be rooz koskhol tar mishe

شهرداری تهران زنان را از مشاغل دفتری اخراج می کند

شهرداری تهران زنان را از مشاغل دفتری اخراج می کند

شهرداری تهران، تمامی زنان شاغل در سمتهای دفتری نظیر مسئول دفتر، منشی و تایپیست را از مشاغل خود اخراج کرد
 
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The meeting where you waited 3 hours right.

Yes :D I was fucked up all last night. First they wanted to renew my contract, but now its a permanent job. :D

Edit: Is Persian Cat, really from your country.. or it is just named like that..

I think Abii's answer is correct.

شهرداری تهران زنان را از مشاغل دفتری اخراج می کند

همینطوری بریم از عربستان هم رد می کنیم. ما همیشه در خلاف جهت زمان حرکت کردیم.

What, you don't groom the nether regions? You've been missing out.

:ِD I know but it doesn't worth creating a segment about it :D
 
http://www.tabnak.ir/fa/news/416891/وقایع-دهشتناک-شب-ورود-داعش-به-موصل

یک نظامی عراقی با روایت وقایع وحشتناک شب ورود داعش به موصل، تاکید کرد: نیروهای پیشمرگه که همواره به عنوان ضامن برقراری امنیت به ارتش عراق کمک می کردند، در آن شب موجبات سیطره داعش بر موصل و اخراج سربازان ارتش از این شهر را فراهم کردند.

به گزارش خبرگزاری مهر، سیطره ناگهانی داعش بر برخی استانهای شمال غربی عراق که تقریبا یک سوم از خاک این کشور را تشکیل می دهد، سوالات متعددی را در بین افکار عمومی منطقه ایجاد کرد. ناظران منطقه ای معتقدند یک گروه تروریستی همانند داعش که به انجام اقدامات تروریستی در برخی شهرهای سوریه و سیطره بر برخی مناطق اکتفا کرده بود، هرگز نمی توانست یک شبه به تشکیلاتی آن چنان قدرتمند تبدیل شود که بتواند ارتش عراق را از شهرهای مهم شمال غربی این کشور بیرون رانده و خودش بر آنها مسلط شود.

تحلیل قاطع در اینجا بر این مسئله استوار است که دستهای پشت پرده منطقه ای (در همسایگی عراق) و داخلی (در درون عراق) در کار بوده است تا با سیطره داعش بر برخی شهرها و مناطق بزرگ عراق روی ناکارآمدی دولت "نوری المالکی" نخست وزیر عراق بزرگنمایی صورت گیرد و از این طریق پروژه صهیونیستی تجزیه عراق به چندین کشور متخاصم را دنبال کنند.

طرحی که در نهایت برای کل خاورمیانه نیز در نظر گرفته شده تا برای حتی چند قرن آتی خیال آمریکا و اسرائیل و دیگر همپیمانان آنها را از بابت بقای رژیم جعلی صهیونیستی که منافع بلندمدت آنها را در منطقه تامین می کند، راحت کند.

در همین راستا یک منبع موثق نظامی در ارتش عراق در گفتگو با خبرنگار مهر، روایت دهشتناکی از شب سیطره تروریستهای داعش بر موصل مطرح کرد.

وی در این باره اظهار داشت: ما در شب سیطره داعش بر موصل به عنوان نیروهای ارتش عراق در یکی از پایگاهها این شهر حضور داشتیم. تعامل و همکاری میان ارتش عراق و نیروهای پیشمرگه در موصل و برخی دیگر مناطق که دارای اقلیت کرد هستند نیز موضوعی همیشگی در عراق پس از رهایی از رژیم بعثی صدام بوده است.

وی افزود: در آن شب بخصوص، برخی از نیروهای پیشمرگه جهت هماهنگی های لازم به پایگاه ما آمدند و قرار شد تا فردا نیز در آنجا بمانند. در نخستین ساعات بامداد من فشار جسم سخت روی سر خود را احساس کردم، ناگهان متوجه شدم یکی از نیروهای پیشمرگه با فشار دادن سلاح روی سر من در حال بر زبان آوردن تهدیداتی است.

این نظامی عراق افزود: وی مرا تهدید کرد برای اینکه زنده بمانم سلاح خود را در پایگاه جا بگذارم و خود مقر ارتش را ترک کنم. بسیاری از نیروهای دیگر ارتش نیز که با همین نوع تهدیدات نیمه شب از خواب برخاسته بودند و مجبور به ترک پایگاه شدند.

وی تاکید کرد: من حتی شنیدم نیروهای پیشمرگه سربازان و افسرانی را که در برابر دستورات آنها مقاومت می کرده اند را به قتل رسانده اند.

این منبع نظامی با اشاره به وضعیت خطرناک آنها در هنگام خروج از موصل، افزود: پس از خروج از شهر موصل متوجه شدیم که تروریستهای داعش بر شهر مسلط شده اند و این مسئله با توجه به وقایع شب گذشته آن بسیار برای ما تامل برانگیز بود.
 
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