Friday, June 13, 2014

Formation Of New island In Gwadar,Pakistan

On September 24, 2013, a major strike-slip earthquake rattled western Pakistan, killing at least 350 people and leaving more than 100,000 homeless. The 7.7 magnitude quake struck the Baluchistan province of northwestern Pakistan. Amidst the destruction, a new island was created offshore in the Paddi Zirr (West Bay) near Gwadar, Pakistan.

On September 26, 2013, the Advanced Land Imager (ALI) on NASA’s Earth Observing-1 (EO-1) satellite captured the top image of that new island, which sits roughly one kilometer (0.6 miles) offshore. Likely a “mud volcano,” the island rose from the seafloor near Gwadar on September 24, shortly after the earthquake struck about 380 kilometers (230 miles) inland. The lower image, acquired by the Operational Land Imager on the Landsat 8 satellite, shows the same area on April 17, 2013.

In the satellite images, lighter shades of green and tan in the water reveal shallow seafloor or suspended sediment. The water depth around the new island is roughly 15 to 20 meters (50 to 65 feet), according to marine geologist Asif Inam of Pakistan’s National Institute of Oceanography. “The floor in that area is generally flat, but the gradient in this area changes quite abruptly,” Inam said. The top image from ALI is also clear enough to show the parallel ripples of waves marching toward the shore.

The aerial photograph below from the National Institute of Oceanography provides a close-up of the landform, estimated to stretch 75 to 90 meters (250 to 300 feet) across and standing 15 to 20 meters (60 to 70 feet) above the water line. The surface is a mixture of mud, fine sand, and solid rock. Click on the downloadable video below the image for a first-hand view.

Compilation of my favourite track #5

Avicii : I could be the one


Addicted to you

Thursday, February 28, 2013

Welding on Zinc coated plates

For zinc coated plates, we should always use a low silicone type consumable for welding. Some manufacturer have wires that is especially built for welding on these primed plates, however they are not too popular. Safro and Oerlikon has got the product used for welding of zinc surfaces, they are the Safdual Zn, or Carbofil Galva.

Or in anycase if you have difficulties looking for these wires, you could opt for AWS: 5.18:ER70S-3 designated wires. With this general wires, expect porosity in the welds due to vaporisation of zinc which forms gas bubles in the weld.

Sunday, February 24, 2013

Discolourtion of HAZ

I was working on some PLC tank welding of 304 stainless steel when i found this. A welder asked me why is there traces of blue in their welds?.

As you could see from the diagram below, blue HAZ means the thickness of the oxide layer measures at 170nm (1 x 10^-6 milimeter). At this scale its thickness enough to get a fail from the welding inspector.

Oxide thickness


The reason why discolouration happens in a weld is because of oxidation that occurs in HAZ.Oxygen as much as 50ppm could result in loss of corrosion resistance. While in Titanium alloys, less than 20ppm is desirable.

If ever oxide thickness exceeds 50nm, recheck on the purging gas as there might have been an oxygen contamination either in the gas supply, or there's a leak in the purging system.

Sunday, April 15, 2012

A welders story!

A snap from my workdesk

So i've joined into the ranks of other who's struggling to climb the corporate ladder!. Well, its been months since i joined this company called Air Liquide Welding (pronounced as air lick-it) which is a French based company.

This company distributes the Safro-oerlikon brand in the Asia pacific region., in short its a brand know for its high price of welding electrodes/consumables and machines.

My rank as a welding engineer, means that i've got to be very good in memorizing standards,procedures and the parameters involved in the process. Not entirely difficult if you had good photographic memory, which unfortunately is missing in me.

So i've welded a lot and alot of metals, but i still suck in welding. Welding seems to be more difficult than it seems on the youtube, i really do have to learn to steady my hand and my movement, as steady as a surgeon's hands.

So far i'm quite satisfied with my job, and it's sad to say that "i loved my job".....Yes!!!, i've said it, i loved my job not because its cool or etc, but its because its got such a bright future for me. Where else can you find a job that can pay you up to hundreds of thousand per month in salary?.

OK,my salary is microscopic, my workplace is 2 hours drive away, its hard to work under a frenchie!, but in the end, i dont fuckin care, because life is always tough!