Today's Message Index:
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1. 06:58 AM - Re: Yak-List Digest: 1 Msgs - 07/31/03 (John W Finley)
2. 10:42 AM - A heads up (Doug)
3. 11:47 AM - Re: A heads up (Brian Lloyd)
4. 06:33 PM - air system charging (Alan)
Message 1
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| Subject: | Re: Yak-List Digest: 1 Msgs - 07/31/03 |
--> Yak-List message posted by: John W Finley <finleycj6@juno.com>
Seat Packs
Doug, I have a pair of Strong " Squadron Packs" almost new that are
available for $ 84000.00 ( this includes a CJ-6)..............John
Finley
Message 2
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--> Yak-List message posted by: "Doug" <rvfltd@televar.com>
Listers and lurkers,
A nasty bit of information is slowly coming into view and even though I do
not have full information yet I feel that all the community, both Yaks and
CJ's need to be aware of the building situation. As you all know I am not a
scientist or a specialist in the field if atomic radiation, so I really do
not know anything about what I am saying here. I am only parroting what I
am learning from my customer in Australia who is an expert in the
field----so don't kill the messenger if I have mis spoken (I do not want to
be labeled as one who does not know his ass from his elbow) ;>). At this
point it's all just food for thought, so do with the info as you see fit.
Last week a customer from Western Australia who has a business which
monitors radiation levels in many industries around the world made the
comment that he took his monitoring instruments into the front of his CJ.
The readings from radiation coming from the instruments (the clock was the
worst offender) were slightly above the recommended dosage when taken right
at the panel. We both were not especially concerned at this point because
we normally sit 24-30 inches aft of the instrument and at that point the
readings were acceptable. A totally different customer (here in the US)
sent his flap and gear knobs to a restorer at the Smithsonian, this guy
checked them out and found that the white "glow in the dark" ring on both
knobs is in fact radium (the nastiest of all glow in the dark crap) and when
tested went right off the scale. But the radiation issue, while very high
is not the real point here, radium traces set free by your the handling of
the controls, even in tiny amounts will cause you problems. When these
trace amounts are allowed to come in contact with your skin or worse yet,
when it is inhaled "bond" in your tissues and WILL, not might or maybe, but
WILL sooner or later cause bone and tissue cancers. There are no known
medical remedies for these cancers. I mentioned all this to my Aussie
friend and he confirmed that the flap and gear knobs exceeded the limits by
10 times and that the health folks down there are taking a very dim view of
the potential health problem. Right now the recommendation is to replace
all the knobs with the type without the white ring. At the very least they
(Australian officials) are recommending that all knobs and levers that have
radium on them be coated with a clear epoxy coating until they can be
replaced. They caution, DO NOT attempt to remove the radium from the knobs,
this will allow minute particles to become airborne which may cause you or
your family potential future harm. The radium removal procedure is very
involved and includes a moon suit, special breathing apparatus and proper
disposal of this dangerous material. From the sounds of the report from
Western Australia the health officials there are taking this very seriously
so I personally am going to be very cautious about handling these knobs
until I hear differently. Do I have replacement knobs?, no not at this
time. However I will attempt to bring a bag of them back with me from my
China trip in November. What do we do with the knobs after we replace them?
I do not have a clue.
I did check my stock and found that in recent years the white ring was
deleted from the flap and gear handle knobs.........perhaps the Chinese
found out about the effects of radium also??
I will continue to research this matter and post accordingly, if anyone out
there has any access to information that may either confirm or deny the
existence of this potential health problem please let me know.
Always Yakin---and maybe glowing in the dark,
Doug Sapp
Message 3
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--> Yak-List message posted by: Brian Lloyd <brian@lloyd.com>
Doug wrote:
> Last week a customer from Western Australia who has a business which
> monitors radiation levels in many industries around the world made the
> comment that he took his monitoring instruments into the front of his CJ.
> The readings from radiation coming from the instruments (the clock was the
> worst offender) were slightly above the recommended dosage when taken right
> at the panel.
Yes. Radium is an alpha and a beta emitter. Air or even a piece of paper stops
alpha particles. Beta is more penetrating but even the glass in the face of
the instrument greatly attenuates it.
We both were not especially concerned at this point because
> we normally sit 24-30 inches aft of the instrument and at that point the
> readings were acceptable.
Until you want someone to work on your instruments. I had some old US instruments
in my 1949 Piper Clipper and I took them in for overhaul. The first thing
the shop did was to dig out a geiger counter and hold it up to the front of the
instruments. Any that made noise (they all did) they moved aside and refused
to work on them. Seems they are considered to be low-level radioactive waste
and you need a special permit from EPA to deal with them.
> A totally different customer (here in the US)
> sent his flap and gear knobs to a restorer at the Smithsonian, this guy
> checked them out and found that the white "glow in the dark" ring on both
> knobs is in fact radium (the nastiest of all glow in the dark crap) and when
> tested went right off the scale. But the radiation issue, while very high
> is not the real point here, radium traces set free by your the handling of
> the controls, even in tiny amounts will cause you problems. When these
> trace amounts are allowed to come in contact with your skin or worse yet,
> when it is inhaled "bond" in your tissues and WILL, not might or maybe, but
> WILL sooner or later cause bone and tissue cancers. There are no known
> medical remedies for these cancers.
Well, maybe not *quite* as bad as you say but Radium is nasty stuff. You don't
want free Ra kicking around and you sure as heck don't want to injest or breathe
it. And these cancers are treated the same way other cancers are treated
but who wants cancer in the first place?
> The radium removal procedure is very
> involved and includes a moon suit, special breathing apparatus and proper
> disposal of this dangerous material. From the sounds of the report from
> Western Australia the health officials there are taking this very seriously
> so I personally am going to be very cautious about handling these knobs
> until I hear differently.
Coating them with epoxy sounds like a good idea.
> Do I have replacement knobs?, no not at this
> time. However I will attempt to bring a bag of them back with me from my
> China trip in November. What do we do with the knobs after we replace them?
> I do not have a clue.
As I said, they will be considered to be low-level nuclear waste. You can imagine
what the EPA is going to say about its disposal. Say "spent nuclear fuel
rods" and "EPA" together in the same breath. Is your hair standing on end? Mine
sure is. The best thing I could think of was packing the offending items
away in the back of the hangar and forgetting them.
> Always Yakin---and maybe glowing in the dark,
No big deal. You didn't want any more kids anyway.
--
Brian Lloyd 6501 Red Hook Plaza, Suite 201
brian@lloyd.com St. Thomas, VI 00802
+1.340.998.9447 - voice +1.360.838.9669 - fax
GMT-4
Message 4
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| Subject: | air system charging |
--> Yak-List message posted by: "Alan" <ap_bronco@hotmail.com>
Need some help.
I inadvertently left my air valve open the other day after securing my Yak-52.
A few days later I found the main air bottle at zero. I towed the a/c over to
the local FBO to recharge the system with nitrogen. My external air fitting
has been modified to accept a schrader valve. We refilled the system to about
4 atm on the main bottle with the main valve open. When the mechanic disconnected
the hoses and started to remove the schrader valve all of the air leaked
back out of the external fill port. Would there be a stuck check valve somewhere?
Any ideas how to fix this? This has been the first time I've recharged
using the external fill port. I have a 1996 Yak-52. Air system is very tight.
Never have had any problems with the air system. Any help would be appreciated.
Thanks,
Al Bromka
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