Which Radition Detector to Buy?

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  • Mon, Aug 22, 2011 - 12:45am

    #11

    Dogs_In_A_Pile

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    Just my opinion…..

[quote=elsur]

Here’s a youtube showing a Canadian citizen using a geiger counter to detect high levels of radiation after a rain storm, more than double previous high reads. I know nothing of this youtuber, and cannot vouch for him.  However, it does appear that the rain is radioactive, as of August 14th.  Any comments on this?

 

http://www.youtube.com/watch?v=EBfvkCEr-Is&feature=player_embedded

 

Thanks,

Elsur

[/quote]

Elsur –

This video clip is so full of survey technique errors and other technical issues I’d be inclined to dismiss it outright.  Water shields beta so counting something wet is pointless.  We don’t know where the surveys were done so we don’t know about naturally occurring background.  There is no isotopic analysis performed so we don’t know what he is "measuring".  For this guy to claim that he is measuring radioactive material from Fukushima is a bit of a reach considering there is nothing going on at the accident site to release the levels necessary to generate the readings in Canada.  I think he’s got an agenda and he’s just grindng an axe – probably upset that Lord Stanley’s Cup is once again resident south of the border.

All kidding aside, the technical shortcomings the video doesn’t address are huge.  While he is clearly counting something, it is almost impossible that it was contamination released from Japan.

  • Mon, Aug 22, 2011 - 12:49am

    #12

    Dogs_In_A_Pile

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    The bubblehead calls it correctly…..

[quote=Chucks688]

It’s been about 20 years since I held a radiac, but I’m curious if a temperature inversion would provide those kinds of readings?

[/quote]

Chuck –

Your memory serves you well – a TI would result in the readings in the clip.  As would a simple Coleman lantern mantle or tungsten impregnated welding rods.

  • Thu, Sep 01, 2011 - 06:52pm

    #13
    elsur

    elsur

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    How are we to know about fallout?

Is there any way to know if we are getting any radioation or fallout effects in our air, rain and communities? 

It sounds like radiation detectors are complicated and expensive.  Local agencies, universities, etc., don’t seem to be reliably monitoring and reporting.  The EPA has raised the acceptable levels of exposure.  Reports keep coming out about low or not-so-low levels of contaminants being detected in various areas from Canada, down the west coast of the US to the east coast – from sources ranging from UC Berkeley, to reputable newspapers, to youtubers.  There are reports of high levels of infant mortality in the aftermath of the Fukushima situation.

How are we to know if and how we are being affected? 

…feeling somewhat disenfrachised to say the least…

 

Elsur

  • Fri, Sep 02, 2011 - 01:27am

    #14
    Chucks688

    Chucks688

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    I don’t worry about Japanese radiation in North America

Elsur,

That may sound pretty cavalier, but it’s honestly my opinion.  It’s been about 20 years since I was an occupational radation worker, supervising nuclear plant operations on US Navy submarines. 

I have enough friends that are still serving that if it was an issue, some of them would at least hint about it.  I asked the question about temperature inversion earlier in the thread because it is fairly common and gives the indication of readings that are substantial, but with a few further steps you can determine there is no real issue other than a naturally occuring event.  DIAP also correctly points out that wet readings, as seen in the video are not routinely done.  There are also survey issues around making contact with what you are surveying, etc., etc…

Three things affect your exposure to radiation other than the amount of radiation at the source:

Time – The longer you are exposed, the more concern.

Distance – The closer you are, the more concern.  There is a lot of distance between Japan and North America.

Shielding – The greater the amount of things that absorb radiation between you and the source, the less concern.

Safe is a relative term, but I haven’t seen any measurements taken by folks in North America that know enough about what they are doing to lead me to believe that I should be worried about it.  That is not to say that the readings at the site in Japan are insignificant or safe.  Totally different issue.  If I was going to take any action at all it would be to lower my consumption of Pacific harvested wild caught seafood, but  I’m not worried enough about it to track it at this point.

Now, the possibility of the US dollar losing reserve currency status.  That concerns me enough to change behavior…

  • Sat, Sep 03, 2011 - 05:57am

    #15
    Michael Frome

    Michael Frome

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    688

Hi Chucks, EOOW or EWS? 

"On thread", though, Elsur, for what it is worth, I agree w/ Chucks, I also don’t have a big fallout concern – except in the event of a nuclear exchange (in which case, coming down with cancer in 10 years is probably not our greatest concern).  If I had a nuclear reactor upwind within a couple hundred miles I’d probably find it prudent to have a beta-gamma survey meter, in case of a Fukashima type event (I live on top of a similarly at-risk area), but I have some basis for believing substantial radioactive contamination worry is really low probability at this point.  I’m concentrating resources on the stuff I’ve got good reason to believe is much higher probability, i.e., the Martenson story…

Cheers,
Mike

  • Sat, Sep 03, 2011 - 10:05pm

    #16
    Chucks688

    Chucks688

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    EWS on Fast Boats

One watch as Shutdown Reacto Operator was enough to convince me I needed to qualify EWS/EDPO.   

  • Wed, Sep 07, 2011 - 07:11am

    #17
    Michael Frome

    Michael Frome

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    688

<grin>  Those knuckledraggers harassing you?  I was on boomers, didn’t get my EWS until I went back to S8G/AFR for instructor duty.  Pretty good times, more or less.  This thread had me thinking waay back to running primary analysis and gearing up for OBRT inspections (bleah).  I guess my general take on civvie contamination monitoring is that it is either "background" at the fiducial level, or total catastrophe in which case it will be pretty obvious it is a good idea to leave Dodge…

  • Tue, Nov 08, 2016 - 10:01pm

    #18
    PISSEDOFF

    PISSEDOFF

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    STAY AWAY FROM Gamma-Scout Geiger Counter!

STAY AWAY FROM Gamma-Scout Geiger Counter!

I purchase many items on the internet and have never experience such a nightmare as I did with this company.  First of all, I purchased from their US distributor.  The package arrived about a month later from Denmark and I had to pay $90 in custom fees.  I noticed after about 2 weeks it kept reading zero.  The manual in the box had a Dr. Mirow in Germany as a contact so I contacted him.  He said the US made sensor is defective and they were having problems with them and to ship it to him in Germany to get it fixed which I did via Canada Post with Tracking which cost me $62.  Dr. Mirow did not pick up the package and it was returned to me and I had to pay another $62 to retrieve it.  I thought I was dealing with a company but Dr. Mirow is a one man show and he it took about a week each time to get a reply.  After waiting 3 months I decided I did not want it repaired as I did not think much of their customer service.  Dr. Mirow told me to contact the distributor where I bought it!  He should have told me this in the first place.  I discussed all of this with distributor only to get this response “You did not contact us at the very first time and for a long time we don't know what was going on. We can not refund the charges between you and Dr. Mirow. Sorry!”  They knew all the details and why I sent it to Dr. Mirow directly.  SO STAY AWAY FROM PURCHASING ANYTHING FROM THIS COMPANY!  EXTREMELY POOR CUSTOMER SERVICE WITH A “WE DON’T CARE ABOUT YOUR PROBLEMS WITH OUR PRODUCT."

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