This page contains the radioactivity measurement information of acrylic materials.

Sample Information

• Date sending to Berkeley might be different from real date sending to Berkeley few days because of the shipment paper work.
• The sample images could be found below this page.

Sample	Manufacture	Description	Date sending to Berkeley	Note
1-1	Liang-Mei	samples from IAV1 top lid. The lid is composed of 4 panels, and it is one of the panels	090515	Image: 090515-1.jpg
1-2	Liang-Mei	samples from IAV1 top lid. The lid is composed of 4 panels, and it is one of the panels	090515	Image: 090515-1.jpg
1-3	Liang-Mei	samples from IAV1 top lid. The lid is composed of 4 panels, and it is one of the panels	090515	Image: 090515-1.jpg
1-4	Liang-Mei	samples from IAV1 top lid. The lid is composed of 4 panels, and it is one of the panels	090515	Image: 090515-1.jpg
2-1	Liang-Mei	sample from IAV1 after-cast barrel. powder-like	090615	Image:090615-1.jpg
2-2	Liang-Mei	sample from IAV1 after-cast barrel. powder-like	090615	Image:090615-1.jpg
2-3	Liang-Mei	sample from IAV1 after-cast barrel. powder-like	090615	Image:090615-1.jpg
3-1	Liang-Mei	samples from IAV1 bottom lid. The lid is composed of 4 panels, and it is one of the panels	090629	Image:090629-1.jpg
3-2	Liang-Mei	samples from IAV1 bottom lid. The lid is composed of 4 panels, and it is one of the panels	090629	Image:090629-1.jpg
3-3	Liang-Mei	samples from IAV1 bottom lid. The lid is composed of 4 panels, and it is one of the panels	090629	Image:090629-1.jpg
3-4	Liang-Mei	samples from IAV1 bottom lid. The lid is composed of 4 panels, and it is one of the panels	090629	Image:090629-1.jpg
4-1	Liang-Mei	samples from IAV2 barrel. The barrel is composed of 6 main panels and 1 extended panel. The samples are from one of the 6 main panels.	090629	Image:090629-1.jpg
4-2	Liang-Mei	samples from IAV2 barrel. The barrel is composed of 6 main panels and 1 extended panel. The samples are from one of the 6 main panels.	090629	Image:090629-1.jpg
4-3	Liang-Mei	samples from IAV2 barrel. The barrel is composed of 6 main panels and 1 extended panel. The samples are from one of the 6 main panels.	090629	Image:090629-1.jpg
4-4	Liang-Mei	samples from IAV2 barrel. The barrel is composed of 6 main panels and 1 extended panel. The samples are from one of the 6 main panels.	090629	Image:090629-1.jpg
4-5	Liang-Mei	samples from IAV2 barrel. The barrel is composed of 6 main panels and 1 extended panel. The samples are from one of the 6 main panels.	090629	Image:090629-1.jpg
4-6	Liang-Mei	samples from IAV2 barrel. The barrel is composed of 6 main panels and 1 extended panel. The samples are from one of the 6 main panels.	090629	Image:090629-1.jpg

Summary of Measurement

The data come from doc:2576

Samples from Daya Bay

Date received

Al Smith label

Date measured

Weight (gm)

Detector ID

Data file

Count time (s)

U238

Th232

K

Co60

Remarks

Associated samples

Note

Nakano acrylic for ribs and lids (8 pieces irregular shape)

27-May-09

6-Sep-09

1012

MERLIN

24122S

271500

<0.8 ppb

<1/5 ppb

< 1.3 ppm

1-1, 1-2, 1-3, 1-4

Berkeley note, "for ribs" might be incorrect. Need to confirm