Patent ID: 8731129

Claim:
A cask buffer body comprising: a shock absorber including a wood material, the shock absorber configured to be attached to a cask that stores a recycle fuel and configured having line-shaped sides and circular arc-shaped corners surrounding a periphery of the cask, the shock absorber absorbing a shock against the cask by being deformed, the shock absorber including a plurality of empty holes for adjusting a shock absorbing capability, the shock absorber comprising: a first shock absorber group including: a first shock absorber configured to absorb a shock generated by the horizontal falling or collision of the cask; a second a shock absorber group configured to absorb the shock when the cask vertically falls or collides or obliquely falls or collides, the second shock absorber group including: a second shock absorber; a third shock absorber; and a fourth shock absorber; and a third shock absorber group configured to absorb the shock when the cask vertically falls or collides, the third shock absorber group configured to sufficiently relax a shock force transmitted to a primary lid and a secondary lid of the cask, the third shock absorber group including: a fifth shock absorber; a sixth shock absorber; a seventh shock absorber; and an eighth shock absorber, wherein the first shock absorber is made of a first material having a highest compressive strength among all of the first to the eighth shock absorbers, wherein the second to the fourth shock absorbers are made of a second material lower in compressive strength than the first shock absorber, wherein the fifth to the eighth shock absorbers are made of a third material lower in compressive strength than the second to the fourth shock absorbers, wherein the first to the eighth shock absorbers are arranged by changing directions of fibers of the wood materials, wherein the compressive strength is a Young's modulus or a compression strength when the shock absorber is compressed.