[NJARC] Re: The A word

Thu Jul 20 22:21:47 EDT 2006

Hi John,  I agree with the input you received from everyone,  but I think you will be alot safer if you encapsulate the asbestos sheet in 3 coats of a good quality lead paint! Yours also in mesothelioma,  Rich

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Today's Topics:

1. Re: Capacitors In Series (john ruccolo)
2. ASBESTOS in old radios -- any suggestions? (john ruccolo)
3. Re: ASBESTOS in old radios -- any suggestions? (Rich's Radios)
4. Re: ASBESTOS in old radios -- any suggestions? (David Sica)
5. Re: ASBESTOS in old radios -- any suggestions? (Al Klase)
6. Re: ASBESTOS in old radios -- any suggestions? (Nick Senker)

----------------------------------------------------------------------

Message: 1
Date: Wed, 19 Jul 2006 11:04:16 -0700 (PDT)
From: john ruccolo 
Subject: Re: [NJARC] Capacitors In Series
To: New Jersey Antique Radio Club 
Message-ID: <20060719180416.34748.qmail at web36304.mail.mud.yahoo.com>
Content-Type: text/plain; charset=iso-8859-1

Phil/Folks,

I agree with Ray (surprise!). You have a good voltage
safety margin, so the equalizing resistors are not
necessary. Also, I suspect that this practice started
long ago, when there were wide variations of leakage
from cap to cap of the same value. With modern
manufacturing technidues, that's not the case -- the
caps are relatively uniform. So don't bother with the
resistors.

JR

--- Ray Chase wrote:

> Visit our web site - See http://www.njarc.org
> _______________________________________________
> Oops, I said put resistors in series, I meant in
> parallel, should not do these things past my
> bedtime.
> Ray
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------------------------------

Message: 2
Date: Wed, 19 Jul 2006 11:14:15 -0700 (PDT)
From: john ruccolo 
Subject: [NJARC] ASBESTOS in old radios -- any suggestions?
To: New Jersey Antique Radio Club 
Message-ID: <20060719181416.22010.qmail at web36305.mail.mud.yahoo.com>
Content-Type: text/plain; charset=iso-8859-1

Hi Folks,

OK, now that we've given capacitors in series a
thorough flogging, I have a question for you:

Recently, I bought a small late 30's Zenith wood set.
The cabinet is a very nice style, but in poor
condition. When I pulled the chassis, I was dismayed
to find a layer of what appears to be asbestos
(glued?) to the wood under the chassis.

What is the safest way to stabilize this stuff? I
think trying to remove it is a *bad* idea. Is there
something I can spray it with to "seal" it and isolate
it? Maybe clear polyurethane?

Any sugesstions would be appreciated.

Yours in mesothelioma,

JR

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------------------------------

Message: 3
Date: Wed, 19 Jul 2006 18:32:32 +0000
From: richs_radios at att.net (Rich's Radios)
Subject: Re: [NJARC] ASBESTOS in old radios -- any suggestions?
To: New Jersey Antique Radio Club 
Message-ID:
<071920061832.13188.44BE7ABF0002A4CE0000338421587667209C01070B0E9DA19C080C079D at att.net>

John,

This topic comes up fairly often on the RAR+P newsgroup - see this recent link;

http://groups.google.com/group/rec.antiques.radio+phono/browse_frm/thread/ac683195c226d8e6/b3895dacceaf867f?lnk=st&q=asbestos+%2B+emerson&rnum=1#b3895dacceaf867f

In between the barbs there appears to be some good advice...

Rich Skoba
--
Looking for Cornell-Dubilier items...

-------------- Original message ----------------------
From: john ruccolo 
> Visit our web site - See http://www.njarc.org
> _______________________________________________
> Hi Folks,
> 
> OK, now that we've given capacitors in series a
> thorough flogging, I have a question for you:
> 
> Recently, I bought a small late 30's Zenith wood set.
> The cabinet is a very nice style, but in poor
> condition. When I pulled the chassis, I was dismayed
> to find a layer of what appears to be asbestos
> (glued?) to the wood under the chassis.
> 
> What is the safest way to stabilize this stuff? I
> think trying to remove it is a *bad* idea. Is there
> something I can spray it with to "seal" it and isolate
> it? Maybe clear polyurethane?
> 
> Any sugesstions would be appreciated.
> 
> Yours in mesothelioma,
> 
> JR
> 
> 
> __________________________________________________
> Do You Yahoo!?
> Tired of spam? Yahoo! Mail has the best spam protection around 
> http://mail.yahoo.com 
> _______________________________________________
> NJARC mailing list
> NJARC at mailman.qth.net
> http://mailman.qth.net/mailman/listinfo/njarc

------------------------------

Message: 4
Date: Wed, 19 Jul 2006 15:50:13 -0400
From: David Sica 
Subject: Re: [NJARC] ASBESTOS in old radios -- any suggestions?
To: njarc at mailman.qth.net
Message-ID: <20060719.155021.3044.7.davesica at juno.com>
Content-Type: text/plain; charset=us-ascii

On Wed, 19 Jul 2006 11:14:15 -0700 (PDT) john ruccolo 
writes:
> Hi Folks,
> I was dismayed to find a layer of what appears to be asbestos (glued?)
to the wood under the chassis. What is the safest way to stabilize this
stuff? I
> think trying to remove it is a *bad* idea. Is there something I can
spray it with to "seal" it and isolate it? Maybe clear polyurethane?

John,

I held EPA hazardous material certification a number of years ago and
learned a bit about asbestos. You are on the right track: encapsulation
is usually the preferred method of dealing with asbestos. 

There are special solutions that can be used to accomplish this, but it's
a pretty low tech operation. Saturating it with liquid plastic should
work just fine. 

I would, however, be concerned that many places they felt a need to add
asbestos insulation (for example, next to a rectifier tube) would be
subjected to high heat. A coating of polyurethane on the asbestos might
not stand up too well to all that heat. In those cases, if the asbestos
is in good condition, I would simply leave it alone. Asbestos is only
dangerous if its "friable", if the fibers are coming loose. If its a hard
sheet of asbestos that has not deteriorated, it should be safe to leave
it there. I have a couple of sets that had asbestos under the chassis
too. I can't imagine why it would be necessary there and I simply took it
out. 

Asbestos is safe to handle as long as its wet. If you want to remove it,
just wet the sheet with water and scrape it out. Rinse out the case to
get rid of any remaining loose fibers that would dry back out and become
a hazard to you later on. Last time I checked, a homeowner (but NOT a
business) could still legally dispose of asbestos in most places by
double bagging it and placing it out with the trash, but this never
struck me as a good idea. I take it and mix it with some leftover paint
and then let the paint dry. It's then "encapsulated" and much more
ecologically-friendly trash. 

(My nose is itching just writing this!)

--Dave

------------------------------

Message: 5
Date: Wed, 19 Jul 2006 18:08:43 -0400
From: Al Klase 
Subject: Re: [NJARC] ASBESTOS in old radios -- any suggestions?
To: New Jersey Antique Radio Club 
Message-ID: <44BEAD6B.3030300 at ar88.net>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

I've thought about this a couple of times. Ordinary paint doesn't sound 
like a good idea, if the radio is going to be used, because it's 
basically plastic. I have no idea regarding the characteristics of 
Ambroid cement, but I'm doubtful. Perhaps high-temp. automotive or 
BBQ-grill paint would be better. Another possibility is "water glass", 
sodium-silicate solution. It lays down a clear, hard, finish that's 
used to fireproof wood or paper. This stuff used to be available from 
pharmacies for preserving eggs. Of course, in those days one could by 
potassium nitrate in any grocery store to make rocket fuel.

Regards,
Al

-- 
Al Klase - N3FRQ
Flemington, NJ
http://www.skywaves.ar88.net/

------------------------------

Message: 6
Date: Wed, 19 Jul 2006 21:00:57 -0400 (GMT-04:00)
From: Nick Senker 
Subject: Re: [NJARC] ASBESTOS in old radios -- any suggestions?
To: New Jersey Antique Radio Club 
Message-ID:
<22386264.1153357257916.JavaMail.root at elwamui-muscovy.atl.sa.earthlink.net>

Content-Type: text/plain; charset=us-ascii

The danger of asbestos is airborn fibers that can be inhaled so encapsulating the fibers prevents this. They used to sell something in paint stores called Bondex, a powder coating (when mixed with water) for concrete surfaces and cinder blocks. I think it is mostly cement or mortar mix. It seems that this would form a good coating and be resistant to heat. Nick Senker

-----Original Message-----
>From: john ruccolo 
>Sent: Jul 19, 2006 2:14 PM
>To: New Jersey Antique Radio Club 
>Subject: [NJARC] ASBESTOS in old radios -- any suggestions?
>
>Visit our web site - See http://www.njarc.org
>_______________________________________________
>Hi Folks,
>
>OK, now that we've given capacitors in series a
>thorough flogging, I have a question for you:
>
>Recently, I bought a small late 30's Zenith wood set.
>The cabinet is a very nice style, but in poor
>condition. When I pulled the chassis, I was dismayed
>to find a layer of what appears to be asbestos
>(glued?) to the wood under the chassis.
>
>What is the safest way to stabilize this stuff? I
>think trying to remove it is a *bad* idea. Is there
>something I can spray it with to "seal" it and isolate
>it? Maybe clear polyurethane?
>
>Any sugesstions would be appreciated.
>
>Yours in mesothelioma,
>
>JR
>
>
>__________________________________________________
>Do You Yahoo!?
>Tired of spam? Yahoo! Mail has the best spam protection around 
>http://mail.yahoo.com 
>_______________________________________________
>NJARC mailing list
>NJARC at mailman.qth.net
>http://mailman.qth.net/mailman/listinfo/njarc

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End of NJARC Digest, Vol 27, Issue 17
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