JAEA-Testing-2011-007.pdf:46.74MB - 日本原子力研究開発機構

JAEA-Testing 2011-007
JAEA-Testing 2011-007
(2) Measure radioactivity before the work
Estimate the volume and measure radioactivity concentration of the pool water to
establish a decontamination strategy and a detailed decontamination plan. The
pool water may be discharged directly depending on the radioactivity
concentration.
(a) Estimate the volume of the pool water based on dimensions of the swimming
pool.
Calculate the volume of the pool water based on dimensions of the swimming
pool
・Length: m
・Width: m
・Depth (Max.): m Depth (Min.): m
(You may use nominal depth (posted at the swimming pool) at the full
capacity)
Volume of the pool water: m3 ↓
(Calculate according to the following formula)
Length × Width × (Max. Depth + Min. Depth)× 0.5
(b) Measure radioactivity concentration of the pool water
Described below is an example for the swimming pool with dimensions of
25mLx14mWx1-1.3mD as shown in the figure below.
Take water samples at four corners of the pool (A through D), locations 1.5 – 2 m
from the side wall (blue line). At each location, take samples at three different
depth; near the water surface (10 cm from the surface), middle (50 cm) and near
the bottom (90 cm).
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