Rowie's Scribbles

This article will focus on calculating the process data required to size a pump: - suction pressure - discharge pressure - NPSHa - differential pressure and head - shaft power - design conditions The function of a pump is move fluid (liquid, slurry) from Point A to Point B. The pump must deliver enough pressure (or head) to ensure the fluid can overcome frictional losses to achieve the desired arrival pressure at Point B. In this example, we'll consider pumping hydrocarbon fluid from a scrubber to a separator.  1) Suction pressure, Ps Ps = Pa - ⌂Pf,s + ⌂Ph,s where Pa = operating pressure at Point A, ⌂Pf,s = frictional losses in suction line,  ⌂Ph,s = static gain between Point A and pump suction nozzle 2) Discharge pressure, Pd Pd = Pb + ⌂Pf,d + ⌂Ph,d where Pb = operating pressure at Point B, ⌂Pf,d = frictional losses in discharge line,  ⌂Ph,d = static gain between Point B and pump discharge nozzle 3) NPSHa Available Net Positive Suction Head is ...

Some of you may notice the Go Green gadget on the left of this blog.  Typical household and industrial lighting methods employ fluorescent lamp tubes because it is relatively cheaper than LED lights. However many home owners are switching to LED for its following advantages: 1) Better cost savings While the price of a LED lamp is higher than the fluorescent lamp, the LED lamp has better long term savings as it can last much longer than the fluorescent lamp, hence replacement is not as frequent. This is especially true for industrial users, where frequent maintenance will require more downtime as well as labor cost.  2) Environmental friendly Fluorescent lamps contain mercury which is not only a pollutant but a toxic chemical. LED lamps are safer and it is not noisy. LED lamps also have better energy efficiency and consumes less electricity which contributes to a greener environment.  3) More durable & efficient LED lamps are not constructed from glass s...

Recently I had the opportunity to visit an offshore platform for a site visit. The purpose of the visit is...jeng jeng jeng! Can't reveal much but I had to obtain information to complete my reports (yeah, I've reached the stage where 1 report is not enough!). I'd to take the following route to the platform: Get a medical checkup > undergo BOSET training > get a safety passport > make the travel arrangements > get my butt there! BOSET stands for Basic Offshore Safety Emergency Training. The purpose of this training is that I've a chance of staying a live should any one of following occurs: i) Helicopter crash to the sea ii) Platform abandonment Also the training helps one to familiarize him/herself with the routine at the platform, like transferring from a boat to the platform, as well as the procedures to conduct work.  I attended the MIS BOSET which is recognized by Petronas & its affliates (if I'm not mistaken), at SEQU Offshore Training...