Local Measurement Results of Ambient Radiation Levels at the Cultural Center (Updated April 1, 2017)

Measurements of ambient radiation levels were conducted in the Cultural Center facilities based on the city's policy for measuring ambient radiation levels. The results are hereby announced.
Additionally, there were no areas identified in this measurement that require cleaning (areas exceeding the judgment criterion of 0.23 microsieverts per hour).
Note: For the associated Children's Center and After-School Childcare Program, please refer to the "Local Measurement Results of Ambient Radiation Levels in the Children's Center and After-School Childcare Program."

• Local Measurement Results of Space Radiation Levels at the Children's Center and After-School Childcare Program (Updated February 1, 2017)

Measurement Results (Conducted in Fiscal Year 2016)

Central Community Center (Measurement Date: December 28, Weather: Clear)

Measurement Location	Measurement Values (Unit: MicroSieverts per hour) 1 Centimeter Above Ground
South Side Lobby Drain	0.062
Front Entrance	0.054

Second Community Center (Measurement Date: January 7, Weather: Clear)

Measurement Location	Measurement Values (Unit: MicroSieverts per hour) 1 Centimeter Above Ground
West Side Parking Lot Drain	0.088
Southwest Front Entrance	0.088
Northeast Side Library Entrance	0.082
North Side Stormwater Drain	0.061

Third Community Center (Measurement Date: January 19, Weather: Clear)

Measurement Location	Measurement Values (Unit: MicroSieverts per hour) 1 Centimeter Above Ground
Slope Under Grating	0.076
Courtyard Rainwater Drain	0.073
Front Entrance	0.090
In front of the Third Library Entrance	0.067

Fourth Community Center (Measurement Date: January 13, Weather: Clear)

Measurement Location	Measurement Values (Unit: MicroSieverts per hour) 1 Centimeter Above Ground
In front of the entrance	0.088

Shiroyama Community Center (Measurement Date: January 20, Weather: Clear)

Measurement Location	Measurement Values (Unit: MicroSieverts per hour) 1 Centimeter Above Ground
Near the Entrance	0.090

Description

When converted to an annual basis, 0.23 microsieverts per hour amounts to 0.99864 millisieverts, which is below the standard for normal radiation exposure for the general public (less than 1 millisievert per year, excluding natural background radiation) as recommended by the International Commission on Radiological Protection (ICRP). Therefore, this value is used as the city's judgment criterion.
According to the Ministry of the Environment's "Decontamination Guidelines," if the radiation level at 1 meter above the ground is below 0.23 microsieverts per hour, no further action is required. However, our city takes a more cautious approach and makes decisions based on measurement results taken at the closest point to the object (1 centimeter above the ground).

• Local Radiation Measurement Results of Public Facilities in the City

Measurement Overview

Measurer

City Employee

Measuring Equipment

PA-1000

Measurement Method

Average of 5 repeated measurements every 60 seconds

Past Measurement Results

• Cultural Center (PDF 68.2KB)