Solid Radioactive Waste Strategy Report.pdf - UK EPR

More documents

Recommendations

Info

EPR UK N° NESH-G/2008/en/0123 REV. A PAGE 222 / 257 13.3.2 Building layout Interim storage facility: outside or inside a building When the flasks are stored outside, the storage facility consists of a concrete storage pad for the flasks which store the spent fuel. The facility would be located within a protected area of the plant site. The storage building consists on a storage hall which has the main characteristics: thick concrete structure, wall thickness approximately 0.8-1.2 m, roof thickness 0.6-1 m, and one or two naives in the building. Doel Storage Facility, Belgium Surry Storage Facility, US The storage facility is designed to operate for 100 years. Some of the reasons to prefer a building over a dry storage system are: · An overbuilding will help to reduce the dose rates by almost eliminating skyshine dose and also reduce direct dose. However the flask has been designed to meet any dose rate criteria without a building; · Nevertheless, the storage of flasks would require that the site fence were some distance from the flasks in order to satisfy off-site dose limits; · Having a building will protect better from weather conditions. The flask equipped with the protective cover will also provide weather protection. It can be noted that having a building over the dry storage system has some disadvantages such as the impact on the natural convection heat transfer due to the effect of enclosure from the building. Storage building The schematic drawing of the storage building for metallic flasks is presented below. Interim storage of an average of 3400 spent fuel assemblies yields to about 170 to 220 flasks, depending on the flask capacity. The approximate dimensions of the storage building are 100 m x 40 m.
EPR UK N° NESH-G/2008/en/0123 REV. A PAGE 223 / 257 FIGURE 86: SCHEMATIC DRAWING OF THE STORAGE BUILDING FOR METALLIC FLASKS Outdoor storage facility The schematic drawing of the outdoor storage pad for metallic flasks is not presented but the location is the same as the flasks stored inside a building. To store an average of 3400 spent fuel assemblies, there will be around 170 to 220 flasks, depending on the flask capacity. 13.3.3 Specific Safety features Dry Storage in Flasks The purpose of the storage system is to protect persons, property and the environment from the effects of the storage of radioactive material. This protection is achieved by providing: · containment of the radioactive contents; · control of external radiation levels; · prevention of criticality; · prevention of damage caused by heat. The flask complies with normal and accidental conditions as described below. The flask is designed to ensure the safety of the spent fuel during their storage period and their transportation. The flask has been designed to meet type B package requirements of the transport regulations issued by IAEA. It is in accordance with TS-R-1, 2005 edition.
Page 1 and 2:
A 2008-11-26 Sarah Greenwood Gary C
Page 3 and 4:
EPR UK N° NESH-G/2008/en/0123 REV.
Page 5 and 6:
Page 7 and 8:
Page 9 and 10:
Page 11 and 12:
Page 13 and 14:
Page 15 and 16:
Page 17 and 18:
Page 19 and 20:
Page 21 and 22:
Page 23 and 24:
Page 25 and 26:
Page 27 and 28:
Page 29 and 30:
Page 31 and 32:
Page 33 and 34:
Page 35 and 36:
Page 37 and 38:
Page 39 and 40:
Page 41 and 42:
Page 43 and 44:
Page 45 and 46:
Page 47 and 48:
Page 49 and 50:
Page 51 and 52:
10 13 16 19 22 46 49 EPR UK N° NES
Page 53 and 54:
Page 55 and 56:
Page 57 and 58:
Page 59 and 60:
Page 61 and 62:
Page 63 and 64:
Page 65 and 66:
Page 67 and 68:
Page 69 and 70:
Page 71 and 72:
Page 73 and 74:
Page 75 and 76:
Page 77 and 78:
Page 79 and 80:
Page 81 and 82:
Page 83 and 84:
Page 85 and 86:
Page 87 and 88:
Page 89 and 90:
Page 91 and 92:
Page 93 and 94:
Page 95 and 96:
Page 97 and 98:
Page 99 and 100:
Page 101 and 102:
Page 103 and 104:
Page 105 and 106:
Page 107 and 108:
Page 109 and 110:
Page 111 and 112:
Page 113 and 114:
Page 115 and 116:
Page 117 and 118:
Page 119 and 120:
Page 121 and 122:
Page 123 and 124:
Page 125 and 126:
Page 127 and 128:
Page 129 and 130:
Page 131 and 132:
Page 133 and 134:
Page 135 and 136:
Page 137 and 138:
Page 139 and 140:
Page 141 and 142:
Page 143 and 144:
Page 145 and 146:
Page 147 and 148:
Page 149 and 150:
Page 151 and 152:
Page 153 and 154:
Page 155 and 156:
Page 157 and 158:
Page 159 and 160:
Page 161 and 162:
Page 163 and 164:
Page 165 and 166:
Page 167 and 168:
Page 169 and 170:
Page 171 and 172: EPR UK N° NESH-G/2008/en/0123 REV.
Page 221: EPR UK N° NESH-G/2008/en/0123 REV.
Page 257: EPR UK N° NESH-G/2008/en/0123 REV.
show all

Solid Radioactive Waste Strategy Report.pdf - UK EPR

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?