Version 3 (modified by thho, 15 years ago)

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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

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