If you are polite and friendly, some companies will give you a small amount of help relative to costing, even though you're just a student. It's worth reaching out to them.
Do you have any additional information? Is the pump running correctly (right flow/pressure)?
It could be swirling effects, due to odd/changing amounts of fluid entering your branch tee into the pumps.
It could be the pumps churning to find an operating point. As your pumps move up-and-down...
Based on your pump curve, it seems pretty straightforward that you're seeing issues with over-recirculation. At the minimum, you could be having troubles with vibration and flow irregularities.
You could also be aggravating NPSH(available) issues if the over-recirculation causes overheating of...
What types of gases?
What is driving your end requirement of 30°C? Your HVAC ducting? You may not be able to use those anyways, depending on the types of gases you're using.
Gotcha - didn't realize that he had gotten feedback previously.
OP - please provide links to associated posts if they pertain to a similar system (or copy in the relevant information).
Edit: Just read your previous post - http://www.eng-tips.com/viewthread.cfm?qid=423001.
Interestingly, this one of those questions that can actually be answered with very little information. Generally, Roman, positive-displacement pumps will deliver whatever discharge pressure is required to meet their fixed flow rate.
The only way in which potentially 3" delivery pipe would...
We use zeolitic media for the removal of cesiums in our process plant.
Because of hazards in handling the media after exhaustion, we sluice the spent zeolites to a large storage tank (~7 m³) for some of the radioactivity decay and for an appropriate waste container to be available. We flush...
There aren't alot of options here to reduce friction.
You can try to get smoother pipes, but the friction coefficient won't move the needle too much.
You could try an alternative suppression fluid with a lower density, but I'm not sure it's allowed by the fire code.
I don't understand your...
In the UK Generic Design Assessment (GDA) process, there are very few firm requirements. Through the ALARP process, you determine the optimal approach through consideration of safety significance, relevant good practice, and the claims/argument/evidence (CAE) approach.
If you're using ASME...
EPRI is an abbreviation for Electric Power Research Institute. It is a collaborative organization where utilities jointly fund research initiatives that have common interest in the industry. Many of their reports have been released to the public.
Ah, you're looking for the concrete consumption amounts (effectively, amount of bulk commodities used during construction).
Your best bet on this might be searching for publically-available EPRI reports. Most such reports for actual projects will be proprietary.
I may have some pouring charts for basemats and structural modules (nuclear island, non-containment) laying around that are public-space. Is this what you're looking for? Or are you looking for an example of a concrete containment building pouring chart?
What are you actually trying to do? In...
US NRC RG 1.136 is the relevant US NRC regulatory guidance on concrete containments.
Other countries will have different rules - most likely wherever you're at will accept the US requirements after reconciliation with your local rules.
https://www.nrc.gov/docs/ML0703/ML070310045.pdf
Lots of great design information about nuclear power plants is provided to the public as part of plant licensing in the US and United Kingdom. As an example, the design certification documents (DCD) for new plants are a good source (https://www.nrc.gov/reactors/new-reactors/design-cert.html) or...
You need to review your specific application with a valve vendor. Some of the tradeoffs of various valve types:
i.) Flow Throttling: Some valve types (globe/needle) allow for fine throttling of flow from 0-100%, others are more open OR closed with little ability to throttle flow.
ii.) Leakage...
In general, refer to your local board for licensure of professional engineers.
Note that noone can help you with this question unless you list your location!
In my experience, nuclear new build always has a separate geotechnical investigation firm and CMT firm. Two reasons:
1.) Long timelines. You almost always bid them out separately, because the geotech investigations will drive huge changes to the scope.
2.) Division of Responsibilities...
