Regional Boards > Mid-Atlantic
Chesapeake Bay Bridge-Tunnel
Mapmikey:
I was surprised to see the amount of radioactive material that is allowed over the CBBT. This may be because medical isotopes needed on the Eastern Shore come from Norfolk, etc. and it would be prohibitively expense to have to transport these (generally) short-lived materials by helicopter or plane. Also residual radioactive waste of the longer-lived materials would be headed to locations not in the Northeast. The limitation for them would be the 500 pounds CBBT threshold. 300 Curies is a large quantity of radioactive material (in terms of how many atoms are decaying per second, not its mass - 300 Curies of Radium-226 would be just 300 g of actual material) and medical radioactive waste is quite unlikely to be anywhere near that much. The mass comes from objects that have/ may have come into contact with the radioactivity (gloves, gowns, tubes, etc.)
By contrast, the Baltimore tunnels disallow any amount (not sure about amounts considered exempt from DOT and/or NRC regulations) of any radionuclide. This is overly restrictive because many of the radioactive materials that would use the tunnels (lots of hospitals that use medical isotopes) are in tiny amounts relative to any harm they could do and they often have very short half-lives.
D-Dey65:
Has anyone else ordered the podcasts pm the CBBT Northbound and Southbound tours? I have to edit my soundfiles form those, because they keep showing up on my PC as "Unknown artist" and "Unknown album."
roadman65:
https://goo.gl/maps/qXoDKo9Syao1XwQm6
Noticed that on North Thimble Shoal Island not that much activity is taking place as is on the other side.
abqtraveler:
--- Quote from: Mapmikey on April 01, 2022, 09:41:17 AM ---I was surprised to see the amount of radioactive material that is allowed over the CBBT. This may be because medical isotopes needed on the Eastern Shore come from Norfolk, etc. and it would be prohibitively expense to have to transport these (generally) short-lived materials by helicopter or plane. Also residual radioactive waste of the longer-lived materials would be headed to locations not in the Northeast. The limitation for them would be the 500 pounds CBBT threshold. 300 Curies is a large quantity of radioactive material (in terms of how many atoms are decaying per second, not its mass - 300 Curies of Radium-226 would be just 300 g of actual material) and medical radioactive waste is quite unlikely to be anywhere near that much. The mass comes from objects that have/ may have come into contact with the radioactivity (gloves, gowns, tubes, etc.)
By contrast, the Baltimore tunnels disallow any amount (not sure about amounts considered exempt from DOT and/or NRC regulations) of any radionuclide. This is overly restrictive because many of the radioactive materials that would use the tunnels (lots of hospitals that use medical isotopes) are in tiny amounts relative to any harm they could do and they often have very short half-lives.
--- End quote ---
The Navy's Atlantic Fleet is anchored at the Norfolk Naval Base. The fleet includes a number of nuclear-powered ships, particularly aircraft carriers and subs. Given that, it would be logical for the CBBT to be a designated route for the transport of nuclear material (spent and unspent) to and from the navy base at Norfolk.
Mapmikey:
--- Quote from: abqtraveler on January 26, 2023, 05:18:28 PM ---
--- Quote from: Mapmikey on April 01, 2022, 09:41:17 AM ---I was surprised to see the amount of radioactive material that is allowed over the CBBT. This may be because medical isotopes needed on the Eastern Shore come from Norfolk, etc. and it would be prohibitively expense to have to transport these (generally) short-lived materials by helicopter or plane. Also residual radioactive waste of the longer-lived materials would be headed to locations not in the Northeast. The limitation for them would be the 500 pounds CBBT threshold. 300 Curies is a large quantity of radioactive material (in terms of how many atoms are decaying per second, not its mass - 300 Curies of Radium-226 would be just 300 g of actual material) and medical radioactive waste is quite unlikely to be anywhere near that much. The mass comes from objects that have/ may have come into contact with the radioactivity (gloves, gowns, tubes, etc.)
By contrast, the Baltimore tunnels disallow any amount (not sure about amounts considered exempt from DOT and/or NRC regulations) of any radionuclide. This is overly restrictive because many of the radioactive materials that would use the tunnels (lots of hospitals that use medical isotopes) are in tiny amounts relative to any harm they could do and they often have very short half-lives.
--- End quote ---
The Navy's Atlantic Fleet is anchored at the Norfolk Naval Base. The fleet includes a number of nuclear-powered ships, particularly aircraft carriers and subs. Given that, it would be logical for the CBBT to be a designated route for the transport of nuclear material (spent and unspent) to and from the navy base at Norfolk.
--- End quote ---
There's no way new or spent fuel meets the 500 lb limit and spent fuel almost certainly exceeds the 300 Ci limit.
It appears new fuel comes from Tennessee. Spent fuel is sent to Idaho. Neither of these require the CBBT anyway.
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version