High EMF Radiation in the MRT Tunnels. Cancer Risk???
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Originally posted by SBST390:
Can you go read up Sec 4 pure physics on nuclear physics before coming here to shoot your mouth off?
Wa...sec 4 talk big already?What is X-ray, UV radiation and gamma ray to you then?
Read up before you shoot your mouth too.
Anyway EMF are created by particles releasing energy so all these coming from train stations, power lines and all, shouldn't come as a surprise. As for whether your health is actually affected by EMF at longer wavelengths (such as radio waves), that is subject to debate.
No-one debates over whether the short wavelength ones do any harm though. Just standing in the sun for one whole day should tell you as much.
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EMF Health damage - High risk group #2
These people are more likely to suffer EMF health effects than others, because of their heavy EMF exposure:
Workers are at risk if they work in close proximity to electrical machinery (e.g. computers including laptops, electric ovens, sewing machines).
People who work with very strong electromagnetic fields like welders, power line technicians, subway workers, cell phone network operating equipment technicians, electric train drivers and others like them, may be strongly at risk and should carefully follow all sound guidelines and safety procedures to reduce their electromagnetic exposure. Even so, they might incur less risk if they were able to change their trade.http://www.emwatch.com/Risk.htm
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http://en.wikipedia.org/wiki/Electromagnetic_field
Health and safetyThe potential health effects of the very low frequency EMFs surrounding power lines and electrical devices are the subject of on-going research and a significant amount of public debate. In workplace environments, where EMF exposures can be up to 10,000 times greater than the average, the US National Institute for Occupational Safety and Health (NIOSH) has issued some cautionary advisories but stresses that the data is currently too limited to draw good conclusions.[2]
The potential effects of electromagnetic fields on human health vary widely depending on the frequency and intensity of the fields. For more information on the health effects due to specific parts of the electromagnetic spectrum, see the following articles with details of possible dangers (MRI) and some currently unfounded fears (mobile phones):
- Static electric fields: see Electric shock
- Static magnetic fields: see MRI#Safety for one of the few applications in which magnetic fields are strong enough to have safety implications
- Extremely low frequency (ELF): see Power lines#Health concerns
- Radio frequency (RF): see Electromagnetic radiation and health
- Light: see Laser safety
- Ultraviolet (UV): see Sunburn
- Gamma rays: see Gamma ray
- Mobile telephony: see Mobile phone radiation and health
You should stop using your iPhone too?
Your phone generates EMF too.
What limywv says is possible too.
To be more accurate, you should use something that does not or generate less EMF.
Anyways, unless you have real proof that it affects, please do not go around scaring people. Thanks!
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Originally posted by deepak.c:
Maybe I start taking buses more often now.
I'm sure a Bus has EMF too.
Try going near the Motor of a bus and also near the Motor of the train.
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Originally posted by Rooney9:
so if tio cancer, can claim from MRT?
if can, like that i faint in the train also can claim medical fees.
not bad -
The strength of the field at the Earth's surface ranges from less than 30 microteslas (0.3 gauss) in an area including most of South America and South Africa to over 60 microteslas (0.6 gauss) around the magnetic poles in northern Canada and south of Australia, and in part of Siberia. - Wikipedia
What you are getting between stations is mostly the background reading. I doubt the time you stay in train stations will really kill you.
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Originally posted by FrozernFire:
The strength of the field at the Earth's surface ranges from less than 30 microteslas (0.3 gauss) in an area including most of South America and South Africa to over 60 microteslas (0.6 gauss) around the magnetic poles in northern Canada and south of Australia, and in part of Siberia. - Wikipedia
What you are getting between stations is mostly the background reading. I doubt the time you stay in train stations will really kill you.
he is right.after all,if you get killed on the MRT because of that,all trains would have ceased operations or the operators use other trains,which would cost a lot without proper funding.and there are safety measures. -
Btw, pardon me for my ignorance
EMF is caused by a changing magnetic flux linkage and a current
The magnetic field (B-Field) is from your iPhone compass
The movement may be due to the movement of train
Therefore, emf is induced.
But, it is inconclusive to just base a increase in emf due to the meter in iPhone as the reliability of the meter is in doubt, yes, is from 50 to 200 emf, but the meter may amplified the emf 50 times, so the change is from 1 emf to 4 emf.
I suggest refer this thing to SMRT and wait for their reply
.........standard reply template expected
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It's very clear cut that those high voltage wires have a high level of EMF, you can't dispute that, but the effects of those high EMF are debatable (like how SBS2601D puts it). There are studies which shows that it leads to cancer and there are studies that refute it.
Then again it's better to err on the side of caution, rather than getting cancer 10 years down the road.
The spike in the iPhone EMF meter is when approaching the station and when the train is accelerating. Can't be my phone once reach station or when the train is accelerating, it will increase the signal strength. If you seriously doubt the accuracy of my iPhone, suggest you get a professional EMF meter to verify. I am just alerting commuters that high EMF radiation is present in the tunnels, it's not like I am driving a taxi, if less commuters take MRT, I will earn more from my passengers.
What's the old adage again?
It's better to be safe than sorry.
EMF Health damage - High risk group #2
These people are more likely to suffer EMF health effects than others, because of their heavy EMF exposure:
Workers are at risk if they work in close proximity to electrical machinery (e.g. computers including laptops, electric ovens, sewing machines).
People who work with very strong electromagnetic fields like welders, power line technicians, subway workers, cell phone network operating equipment technicians, electric train drivers and others like them, may be strongly at risk and should carefully follow all sound guidelines and safety procedures to reduce their electromagnetic exposure. Even so, they might incur less risk if they were able to change their trade. -
Your MRT don't use lithium batteries like the iPhone, it uses high voltage power lines.
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What I must say is the accuracy of the application cannot be really proved... We have electrical devices measuring specific parameters costing thousands of dollars, can a iPhone application be more professional than any of them?
Engineers can well use a iPhone instead of those thousand dollar devices, if its that accurate...
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Originally posted by TIB1224Y:
What I must say is the accuracy of the application cannot be really proved... We have electrical devices measuring specific parameters costing thousands of dollars, can a iPhone application be more professional than any of them?
Engineers can well use a iPhone instead of those thousand dollar devices, if its that accurate...
I agree iPhone is not 100% accurate, but based on the article above (if you had taken time to read), it does show that subway and train workers having a higher risk from EMF radiation exposure. Also, I can't afford a thousand dollar EMF meter also, if you have one, could you please help me do a reading.
High voltage power lines means high EMF radiation, I hope you can accept this fact. And your MRT trains are not powered by lithium batteries.
Whether accuracy is a question, there is an undeniable fact that high voltage power lines means high EMF radiation.
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I can't prove that there is any direct causal relationship between residents being afflicted by leukemia and operations of MRT from 1988-1992 and 1998-2002, but there has been a dramatic increase since it's operations.
Pre MRT operations (1968-1972)
Lymphatic leukaemia = 80
Myeloid leukaemia = 113
Monocytic leukaemia = 6
Ohter leukaemia = 2
Leukaemia, unspecified = 21
Total = 222
Pre MRT operations (1973-1977)
Lymphatic leukaemia = 71
Myeloid leukaemia = 121
Monocytic leukaemia = 3
Other leukaemia = 6
Leukaemia, unspecified = 32
Total = 233
Pre MRT operations (1978-1982)
Lymphatic leukaemia = 75
Myeloid leukaemia = 127
Monocytic leukaemia = 4
Other leukaemia = 4
Leukaemia, unspecified = 30
Total = 240
Pre MRT operations (1983-1987)
Lymphatic leukaemia = 97
Myeloid leukaemia = 151
Monocytic leukaemia = 3
Other leukaemia = 8
Leukaemia, unspecified = 20
Total = 279
Post MRT operations (1988-1992) [Transitional phase]
Lymphatic leukaemia = 124
Myeloid leukaemia = 206
Monocytic leukaemia = 2
Other leukaemia = 1
Leukaemia, unspecified = 18
Total = 351
Post MRT operations (1993-1997)
Lymphatic leukaemia = 136
Myeloid leukaemia = 239
Monocytic leukaemia = 2
Other leukaemia = 2
Leukaemia, unspecified = 111
Total = 490
Post MRT operations (1998-2002)
Lymphatic leukaemia = 159
Myeloid leukaemia = 259
Monocytic leukaemia = 2
Other leukaemia = 5
Leukaemia, unspecified = 131
Total = 556
*All data extracted from "All Residents" and "Males" section from National Cancer Centre Singapore archive, the link is enclosed below.
**Assumptions made: EMF radiation only causes leukaemia.
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Originally posted by TIB1224Y:
What I must say is the accuracy of the application cannot be really proved... We have electrical devices measuring specific parameters costing thousands of dollars, can a iPhone application be more professional than any of them?
Engineers can well use a iPhone instead of those thousand dollar devices, if its that accurate...
I believe the iphone part mentioned by deepak is just a side-track and for-fun thing.One cannot deny that train stations, electrical trains in particular, produce rather high and concentrated fluxes of EMF. You don't need to use instruments. Theory is enough. There's no debate about this. And the figures shown by deepak tells as much, so it strikes me as really strange why people are continually harping about the inaccuracies of the iphone.
The real debate is regarding the possible health effects caused by long wavelength EMFs produced by the excited particles in the power cables.
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Originally posted by deepak.c:
Maybe I start taking buses more often now.
Buses also emit EMF radiation, so I would suggest you ride bicycles instead
You get to save on transport fares and it is a more healthier choice
Best of all, there's no ERP
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Originally posted by starExcaliblur:
Buses also emit EMF radiation, so I would suggest you ride bicycles insteadYou get to save on transport fares and it is a more healthier choice
Best of all, there's no ERP
The EMF radiation from buses would be much less, afterall it's powered by diesel fuel combustion not pure electricity like the MRT trains. Unless you start seeing a very long high voltage power line sticking out of the buses leading all the way to the SBS bus terminal or Singapore Power.
Incidentally, how much electricity do you think is require to move one carriage of MRT? I would think one carriage weight at least 6-8 tonnes.
I don't know if you are daft or something, but anything electrical has EMF radiation, it's just the intensity that is different.
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deepak c
i believe that the EMF is present in the lines , however please note that the voltage difference is a huge one compared to high voltage power lines. AFAIK the voltage on the mrt is abt 700ish volt, but based on your article the power lines voltage on those are very very high..in some countries i think more that 25KV,sg does have these but mostly in some specalized buildings where the voltage is step down to 700v.
so if you based on the line voltage and the high voltage, the accuracy would have a huge gap difference and would also prove to some extent incorrect.
i do agree with you that high voltage= high emf radiation but when you compare 700vdc to 25000volts AC the obvious would tell you which is at higher risk.
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Definition of Statistics: "The science of producing unreliable facts from reliable figures" ~ Evan Esar
As if the population remains the same from 1968 to 2002, and peoples' standard of living is stagnant, and the health services too.
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Originally posted by deepak.c:
The EMF radiation from buses would be much less, afterall it's powered by diesel fuel combustion not pure electricity like the MRT trains. Unless you start seeing a very long high voltage power line sticking out of the buses leading all the way to the SBS bus terminal or Singapore Power.
Incidentally, how much electricity do you think is require to move one carriage of MRT? I would think one carriage weight at least 6-8 tonnes.
I don't know if you are daft or something, but anything electrical has EMF radiation, it's just the intensity that is different.
From your posts in this topic, I could see you are just being paranoid.I wrote on my 1st post of this topic that all electronic devices (including your iphone) emits a certain amount of EMF. I know about EMF radiation and what has been done to reduce or eliminate EMF radiation. That's why I am not paranoid but you are.
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again,we train folks have been near those places for many hours very often but we still don't die sudddenly of cancer or some mystical energy.no one,has ever,ever died after taking the MRT as far as i know.i strongly disagree that you will demolish from it.however,it gives me goosebumps in my nightmares.