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  • Users: mmenarry
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  1. mmenarry

    Temperature correction on a dyno

    Quick query: A dyno manufacturer is claiming that their machines correct for temp, i.e. will give the same output figures regardless of temp, a test vehicle will show the same power whether tested at cold or hot days. Without a MAF is this possible? For example, pre-det due to high temps, how...
  2. mmenarry

    Starting salary for a graduate EE?

    A friend is potentially going for a job in New Hampshire, recent graduate in Electronic Engineering. Graduated in the UK. What would be a reasonable expectation of starting salary, in a pretty small company? He has no idea of living costs, etc. in the 'states. Many thanks! M.
  3. mmenarry

    Job not matching job spec: How to approach?

    Okay, here's the situation: I'm an env, health & safety officer in small/medium company (500 employees). Recently (last 18months) I've been doing an increasing amount of what I would term "consultancy" work for our company. Find out the client's problem, come up with a solution out of options...
  4. mmenarry

    Heavy metals remediation?

    Folks, I have a site with heavy metals contamination, primarily Lead (600ppm), Zinc (1000ppm) & Tin (8000ppm). The site was a "brownfield" site approximately 30 years ago, the contamination is not related to current activities on site. The levels above are from a soil survey conducted...
  5. mmenarry

    Calculating softening capacity

    Hi folks! Has anyone got an equation for calculating the softening capacity of a resin? I have the capacity of the resin itself (43.7 kgr/cubic foot in Na+ form), the volume/weight of resin, and I'm trying to calculate the amount of water at a specific hardness (as CaCO3) that each softener can...
  6. mmenarry

    Plastic pipe degradation

    Hi folks, I have a third-party water treatment package, multimedia filters followed by water softeners. Total volume treated is 180 cubic metres an hour. I'm experiencing a strange problem: The plastic pipework (ABS, PVC and u-PVC) seems to be becoming brittle. I'm experiencing failures of...

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