[ RadSafe ] Need advice Moving large Pb shield
Bruce R Zibung
bruce.zibung at sbcglobal.net
Tue Mar 5 11:35:54 CST 2013
There have been several serious accidents in power plants that occurred when top
heavy instruments were moved - one resulted in a fatality.
Consider using a pallet jack with appropriate staging (wood blocks etc) if there
is sufficient space in the room to prevent any one from being in the path of the
load if it falls.
There is another tool that is available - floor crawlers or tractors. They are
devices designed for moving heavy loads. They are similar to casters except that
they use roller bearing tracks to aid in moving the load. Ensure that the floor
is absolutely clean so that the load's movement will not be impeded by small
pebbles or other contaminants. Consider dismantling the shield (remove the top)
to lighten the major load.
From: dcoble tds.net <dcoble at tds.net>
To: The International Radiation Protection (Health Physics) Mailing List
<radsafe at health.phys.iit.edu>
Sent: Tue, March 5, 2013 12:23:15 PM
Subject: Re: [ RadSafe ] Need advice Moving large Pb shield
A few thoughts. Moving something like this is quite risky. I would not
want to slide it.
Suggestion 1. Modify stand with wheels so it can roll into position.
Suggestion 2. Use some sort of portable gantry system that is rated for
the load to lift into place. Requires some room to manuver around. See
Suggestion 3. Eniging hoist rated for the load. See link.
Hope this helps.
On Tue, Mar 5, 2013 at 12:00 PM, Robert J. Gunter, CHP <
rjgunter at chpconsultants.com> wrote:
> Greetings All,
> We are trying to move a Canberra Model 747 Pb shield into a room and onto
> its stand and need some advice. We can get it into the room with a
> and even set it onto the stand, but must then move it about 8 feet. We are
> concerned with moving it while loaded on the stand as it will be top heavy.
> We cannot get the forklift into the room. The unit weighs 3000 lbs and has
> lifting eyes.
> I am sure someone out there has done this and can give some advice. I
> much prefer to lift the device onto the stand once in the room, but am not
> familiar with small enough portable equipment capable getting into the room
> through a 36" door and lifting this 3000 lb device. Another way we could
> this is to load it onto the stand with a forklift from outside the room and
> then "slide" it over about 10 feet. This does not seem like a very safe
> to do this since it is so top heavy.
> Perhaps there are lifting devices that can be rented?
> Any advice would be appreciated.
> Robert J. Gunter, MSc, CHP
> CHP Consultants/CHP Dosimetry
> Toll Free: (888) 766-4833
> Fax: (866) 491-9913
> Cel: (865) 387-0028
> rjgunter at chpconsultants.com
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