Hmmm, ibland får man läras sig nått nytt... googlade lite och hittade den här...
http://www.thebmc.co.uk/bmcNews/media/u_content/File/equipment_advice/bolt_funds/Users_guideLR.pdf
"stress corrosion crackin" har ja aldrig hört talas om innan. Så sunt förnuft kanske inte alltid räcker...
"SCC can occur in stainless steels in aqueous chloride solutions
(e.g., seawater) so the bolts on sea cliffs appear to be most susceptible.
Luckily for us, there is a temperature (~50°C) below which it doesn’t occur
(except in very acidic conditions) so it shouldn’t be a problem in the UK until
global warming really kicks in. The corrosion is very localised and takes the
form of cracks that can penetrate through the metal, reducing its strength to
almost zero. These cracks can be very fine and difficult to detect on the
surface and impossible to see how far they penetrate."
Kanske värt att fundera på om man ska till Thailand
"My last month was spent climbing in Thailand on some very questionable bolts...
About a week ago while I was waiting for a guided party to finish a second pitch on
Thaiwand Wall, a leader broke a bolt by pulling on the quickdraw. This caused him to
fall and break the next bolt. He was lowered off with a badly injured leg. Both bolts
fractured in the shaft at the hanger."
The Devil and the Deep Blue Sea
John Byrnes, Skip Harper and Mike Shelton
Sådär, ska nu inte kapa tråden nått mer...
http://www.thebmc.co.uk/bmcNews/media/u_content/File/equipment_advice/bolt_funds/Users_guideLR.pdf
"stress corrosion crackin" har ja aldrig hört talas om innan. Så sunt förnuft kanske inte alltid räcker...
"SCC can occur in stainless steels in aqueous chloride solutions
(e.g., seawater) so the bolts on sea cliffs appear to be most susceptible.
Luckily for us, there is a temperature (~50°C) below which it doesn’t occur
(except in very acidic conditions) so it shouldn’t be a problem in the UK until
global warming really kicks in. The corrosion is very localised and takes the
form of cracks that can penetrate through the metal, reducing its strength to
almost zero. These cracks can be very fine and difficult to detect on the
surface and impossible to see how far they penetrate."
Kanske värt att fundera på om man ska till Thailand
"My last month was spent climbing in Thailand on some very questionable bolts...
About a week ago while I was waiting for a guided party to finish a second pitch on
Thaiwand Wall, a leader broke a bolt by pulling on the quickdraw. This caused him to
fall and break the next bolt. He was lowered off with a badly injured leg. Both bolts
fractured in the shaft at the hanger."
The Devil and the Deep Blue Sea
John Byrnes, Skip Harper and Mike Shelton
Sådär, ska nu inte kapa tråden nått mer...
