Japan Earthquake | Page 143
@marie rich Uh... I just found this: yosemite.epa.gov!OpenDocument which shows .068 pC of Iodine I-131 in San Francisco. That is .0025 Bq. So if you are exposed to that every second, it would be 9/hr or 216 Bq/day. Very small amount.by Jojo 3/28/2011 7:06:19 AM- It is bs though , but a nice story, www.straightdope.comby Ralph Unger 3/28/2011 7:06:54 AM
- just read newspaper, it seems we have a partial melting.. crisis are going over years nowby hans 3/28/2011 7:07:35 AM
- good morning guysby hans 3/28/2011 7:07:51 AM
- @marie rich Do you know the readings to curies for a Geiger counter?by Jojo 3/28/2011 7:07:56 AM
by VeenOui 3/28/2011 7:08:18 AM- Japan raps nuclear operator over radiation mistake. www.reuters.comby Ralph Unger 3/28/2011 7:11:41 AM
checking, brbby marie rich 3/28/2011 7:12:10 AM- Radioactive water removal underway, fresh seawater pollution found english.kyodonews.jpby Ralph Unger 3/28/2011 7:13:14 AM
- @marie rich Thanks.by Jojo 3/28/2011 7:14:42 AM
- @hans Morningby Jojo 3/28/2011 7:14:54 AM
- @andyjsha Hi Andy, how are things with you? You are in Japan, right?by Jojo 3/28/2011 7:15:12 AM
- @Jojo this sit is very useful for all kinds of conversions. You can put in whatever you want in search. www.asknumbers.comby marie rich 3/28/2011 7:16:18 AM
- Exposure to 100 millisieverts is the legal limit for nuclear plant workers dealing with an emergency, but the limit has been raised to 250 millisieverts during the ongoing crisis, the worst Japan has seen, at the plant some 220 kilometers northeast of Tokyo.by Ralph Unger 3/28/2011 7:20:36 AM
- Is this per shift or per year? english.kyodonews.jpby Ralph Unger 3/28/2011 7:22:51 AM
- Is NHK the only source channel for these reports? They totally don't cover it! I want to hear it all.by marie rich 3/28/2011 7:22:55 AM
@Ralph Unger From other things I have read, once they reach the limit they are discharged from working at the plant. I will try to look for a source that states this.by borrrden 3/28/2011 7:23:53 AM- @Ralph Unger 250 mSv / YEAR. 1 mSv / year is EPA limit for regular people.by Jojo 3/28/2011 7:25:21 AM
- @Ralph Unger don't have a source to cite, but it would be per worker/yr. when you hit 250usv you're moved to non-exposure position. In the USA, the limit for workers is 500usv (msv).by marie rich 3/28/2011 7:26:42 AM
- @Ralph Unger Which is why stuff don't add up. They just found OVER 1 Sv (1000 mSv) per hour in the contmainated water (calcs put it at about 3 Sv/hour). Evan at 1 Sv/ hour, you could have a worker stand there for 15 mins MAX before being sent home...forever. So they are either not able to do work, have tons and tons of workers. or they are going over the limit regularly.by Jojo 3/28/2011 7:26:50 AM
- @Jojo That number is slightly dubious. It is 1 mSv / year limit to the general public directly resulting from any nuclear operation. Most people receive more than that per year from medical procedures (not to mention natural sources).by borrrden 3/28/2011 7:27:14 AM
- I see two sources , 1 says per shift (per day I assume) 250 mSv limit (Tepco) and 1 says per year.250 mSv limit (Tepco)_.by Ralph Unger 3/28/2011 7:28:05 AM
- @borrrden Yes, you're right. 1 mSv not related to medical radiation or background radiation.by Jojo 3/28/2011 7:29:25 AM
- Trust me, Ralph, for Japan I can't confirm, but it's 500mSv (uSv) a year for a worker. My son is a radtechby marie rich 3/28/2011 7:29:30 AM
- If it is 250 per year then you can walk up to the plants and wave a bit and then go home, you got your 250 mSvs.by Ralph Unger 3/28/2011 7:29:43 AM
- @Ralph Unger Pretty much.by Jojo 3/28/2011 7:29:58 AM
- @Ralph Unger Hence the repeated evacuations :-/by borrrden 3/28/2011 7:30:08 AM
- @marie rich That is the international limit. Japan laws are a lot more strict when it comes to radiation exposure.by Pedro Jesus 3/28/2011 7:30:34 AM
- @Ralph Unger Your forgeting that the protective gear (at least when they have it) cuts down alot on exposure.by marie rich 3/28/2011 7:30:50 AM
- No it does not! Name the gear?by Ralph Unger 3/28/2011 7:31:17 AM
- @Pedro Jesus That's what I said in earlier post to ralphby marie rich 3/28/2011 7:31:21 AM
- I apologize for the repetition.by Pedro Jesus 3/28/2011 7:31:52 AM
- Paper and skin id good for Alpha but...by Ralph Unger 3/28/2011 7:31:58 AM
- Name anything good to protect you from gamma?by Ralph Unger 3/28/2011 7:33:09 AM
- It's 250 mSv per YEAR and the water at the bottom of reactor 2 is AT LEAST 1 Sv (1000 Sv). And RISING.by Jojo 3/28/2011 7:33:13 AM
- Thay wear rad suits, bootie respirators (oxygen tanks if real bad), and dosimeters that they're supposed to wear and listen to. cuts out all alpha, beta, some gamma. hence the time limitsby marie rich 3/28/2011 7:33:23 AM
- @Marie Who wears that? None of the injured worker were wearing that.by Ralph Unger 3/28/2011 7:34:42 AM
- plus, before they go in they do a survey with a boom counter. gives them an idea where the hotest spots are. Radiation dosae is a function of time And distance.by marie rich 3/28/2011 7:35:08 AM
- @Ralph Unger The two injured workers were not working in a contaminated area. The 3 that were exposed to high radiation doses were not injured in the process.by Pedro Jesus 3/28/2011 7:35:51 AM
- @marie rich Except for those guys standing in the radioactive water for a half hour.by Jojo 3/28/2011 7:35:57 AM
- LOL that did not work out so well for the 3 workers.by Ralph Unger 3/28/2011 7:35:58 AM
- Here is what they are wearing uk.reuters.comby borrrden 3/28/2011 7:36:05 AM
- Ralph that's here in USA. BUt they were wearing at least some of that there. The one worker had on proper wellington boots and was okby marie rich 3/28/2011 7:36:07 AM
- Good point Marie, but why weren't he other two wearing protection like that?by Ralph Unger 3/28/2011 7:37:26 AM
- THay should have had on rubber seamless boots that were taped, sleeves taped at gloves, etc. but the survey was done too far in advance, so they didn't know the water was hotby marie rich 3/28/2011 7:37:42 AM
Japan Earthquake | Page 143
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