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Hi fellow engineers. A pump supplier has provided us a vent with API Plan 13 for an API 610 vertical inline OH3 pump. I did not know there was a requirement of a vent. Do we know why it is required and can we blind it off? Thanks.

Thank you so much @skdesigner for your response and very helpful feedback.

Hi Fellow Fire Professionals, I am working on designing a deluge spray nozzle for a sphere holding hydrocarbons (BLEVE risk). The client has their own design of installing an umbrella type upright spray nozzle at the top center of the sphere. Once the deluge valve is activated, the water will...

Hi fellow experienced Engineers, I am doing a stress analysis for an exsiting piping connected to an ANSI horizontal pump that has given allowable nozzle loads / moments for the suction and discharge nozzle. I am consistently getting very high Fb and Fc for the operating cases (high temp and...

Hi LittleInch - thank you very much for your quick feedback. You are surely a very active and knowledgeable member of this group and I follow your responses on other posts very keenly. Thanks again.

Hi fellow members. I am specifying a camlock Type-A adaptor threaded to a CS pipe nipple for firewater application. The adaptor is there for the vac truck to connect to whenever line draining is required. The camlock Type-A adaptor is only available in brass, aluminum or SS material. My question...

Hi 1503-44, Thanks. So basically you are saying I need to know the viscosity of the product at close to 0 gpm flowrate and at the required flowrate (in my case 20 gpm). Should I contact the client to provide me that info for their product? I doubt they will have the viscosity at various...

Hi 1503-44 and LittleInch, The line is steam-traced / insulated and will be maintained at a constant temperature of around 100oC. I have the viscosity of the product at this temperature. I am trying to use FluidFlow software to do the hydraulics but cannot find a way to custom define the wax I...

Very true LittleInch..This is the reason I am seeking out other expert opinions on this forum as I don't want to go by my assumptions...:-)

Hi 1503-44, any simple reference to perform hydraulic pressure drop calculation for such a fluid? I am looking for a simple one as the calculation does not have to be exact.

Thank you LittleInch and TiCl4 for the feedback. Thank you very much pierreick for sharing the paper. I will go through it. So this is an established fact that waxes ("Paraffin Wax" and "Microcrystalline Wax") are considered as Non-Newtonian fluids? I was finding differing opinions when I...

Thank you MJCronin, LittleInch, JStephen and IFRs for your thoughts and feedback on it. I will keep you guys updated about what solution we end up with in our case. I was also of the opinion that since Emergency Vents are designed for a "Fire" exposure scenario, any snow that might be on...

HI, I am trying to fill out a data sheet for a PD rotary (gear type) pump needed for a client. The product is wax liquid with a viscosity of as high as 2500 cP at 212 F. I know the required pressure at the equipment inlet where the pump has to feed to, so I am trying to back calculate what the...

Hi MJCronin, Thank you very much for your response. Please see responses to your questions below. Please let me know any other info you might want to consider to provide your feedback based on your experience. Thanks you. Specifically, what type of roof is on the tank ? Conical non-frangible...

Hi, I am working on sizing an Emergency Vent [EV] for an API650 atmospheric storage tank built using API 2000 standard. I understand that API 2000 gives guidance in terms of capacity required for the EV. However, after I am done sizing the EV (per API 2000), next step is to determine the right...

Thanks JStephen for the explanation. Looks like UL-142 is the US equivalent for ULC-S601 standard.

Hi fellow members. I have recently been working on a project where we are engineering a new foam system to be incorporated into the client's existing firewater system. This is to have a foam-water solution for effective firefighting application. We are going with an atmospheric storage tank with...

Thanks JStephen for the response. Okay got it. Does that also mean that API 650 tanks (storing combustible and flammable liquids) are only meant for outdoor installations only and if it has to be installed indoors, any tank with combustible / flammable liquids has to follow one of the specs...

HI. I am working on a project where we are evaluating if a ULC S601 designed diesel storage tank (supplying fuel oil to the diesel engine placed in the same room) is suitable for indoor installation or not? As per ULC S601, installation of such tanks shall be in accordance with National Fire...

Hi UFT12, Thanks for your response. Apologies for using the wrong terminology. So from what I have deduced so far, I can use the "Total Pressure" for calculating flow through a sprinkler head using the Q=K*√P formula, where P refers to the "Total Pressure" = "Normal Pressure" + "Velocity...