8.5　Heat Accumulator

8.5.1　For the support installation，the longitudinal and horizontal center lines shall be adjusted，and the measurement by plumb wire should be carried out，with the allowable deviation of 2.0mm.The elevation shall be adjusted，and the measurement by optical instrument should be carried out，with the allowable deviation of±3.0mm.The levelness shall be adjusted，and the measurement by leveler should be carried out，with the allowable deviation of 1.0/1000.

8.5.2　For the installation of heat accumulator，it shall be evenly and tightly contacted with the support，whose sliding end shall be reserved with movement amount for thermal expansion as required by the design technical document，resulting in sliding unobstructedly.

8.5.3　During the installation，the longitudinal and horizontal center lines of heat accumulator shall be adjusted，and the measurement by plumb wire should be carried out，with the allowable deviation of 5.0mm.The elevation shall be adjusted，and the measurement by optical instrument should be carried out，with the allowable deviation of±5.0mm.The levelness shall be adjusted，and the measurement by optical instrument should be carried out，with the allowable deviation of 2.0mm for the overall length.

8.5.4　During the installation，the heat accumulator shall be subject to a hydrostatic test according to the requirement of the design technical document，during of which the pressure shall be slowly boostered or lowered.