Sub: Radiography chamber
One does not need to build a permanent one for this. It can be very effective per the follwoing .
1)Have 1mter x 1 meter x 1 or 2 mtr height cement blocks with suiatble reinforcement. this block shall have one recatgular channel structral member ( suiatble for fitting on to heavy fork lift forks) across the block of 1 meter wifdth or length or 2 members in both directions, If 2 channels are taken in 2 directions( this would be benefecial for ease of handling) they shall cross by an elevation difference of minimum 8 inch.
2)The above blocks shall have 1/4 inch studs embedded one 1 or 2 faces. The faces having these studs shall be in height direction and must be lateral to the handling channel embedded in the block in case of 1 channel case is used. If 2 lateral channels are embedded, the studs face can be on any face in height direction . these studs are used to attach a lead sheet either inside or outside the chamber.
3)Once the blocks are available , place the blocks to form a chamber of the desired size in length, width and height. normally the height will be limited to 12 meters since the blocks ned to be placed using a crane.
4)The chamber 's entry needs to be worked out using a steel screens attached with Lead screens .
5)Once the blocks are placed one over the other , on side by side , place the lead sheets either on total face ( inside or outside ) or at least at the joints in between the blocks so as to eliminate radiation leak through the gaps . Claddingt the entire face may not be required since the 1 meter concrete shall be adequate to minimise the radiation levels outside . The gaps need to be sealed with lead screens. Some times lead screen s can be placed on both outside and inside at the joints based on the radiation intensity.
I hope that you could get fair idea now.
Best of luck
tagore
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One does not need to build a permanent one for this. It can be very effective per the follwoing .
1)Have 1mter x 1 meter x 1 or 2 mtr height cement blocks with suiatble reinforcement. this block shall have one recatgular channel structral member ( suiatble for fitting on to heavy fork lift forks) across the block of 1 meter wifdth or length or 2 members in both directions, If 2 channels are taken in 2 directions( this would be benefecial for ease of handling) they shall cross by an elevation difference of minimum 8 inch.
2)The above blocks shall have 1/4 inch studs embedded one 1 or 2 faces. The faces having these studs shall be in height direction and must be lateral to the handling channel embedded in the block in case of 1 channel case is used. If 2 lateral channels are embedded, the studs face can be on any face in height direction . these studs are used to attach a lead sheet either inside or outside the chamber.
3)Once the blocks are available , place the blocks to form a chamber of the desired size in length, width and height. normally the height will be limited to 12 meters since the blocks ned to be placed using a crane.
4)The chamber 's entry needs to be worked out using a steel screens attached with Lead screens .
5)Once the blocks are placed one over the other , on side by side , place the lead sheets either on total face ( inside or outside ) or at least at the joints in between the blocks so as to eliminate radiation leak through the gaps . Claddingt the entire face may not be required since the 1 meter concrete shall be adequate to minimise the radiation levels outside . The gaps need to be sealed with lead screens. Some times lead screen s can be placed on both outside and inside at the joints based on the radiation intensity.
I hope that you could get fair idea now.
Best of luck
tagore
On Tue, Apr 29, 2008 at 11:41 PM, Ramadas Gururaj <ramadasgururaj@gmail.com> wrote:
Dear MembersCan anyone post me the data as regards "construction of radiography chamber ' used in the site for taking X ray ofwelded pipes and tubes . The approximate dimension shall be 20 meter long with 12 meter width brick and mortarconstruction . Raidation level shall have to be maintained within 50 curieRegards
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To post to this group, send email to materials-welding@googlegroups.com
To unsubscribe from this group, send email to materials-welding-unsubscribe@googlegroups.com
For more options, visit this group's bolg at http://materials-welding.blogspot.com/
The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
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