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9F324
- Reactor Area LLW/VLLW
Reactor Dismantling and Site Clearance processes and procedures.
Nuclear Restoration Services Ltd (NRS) | Sizewell A | LLW
9F325
- Thermal Insulation (Asbestos) LLW
Insulation materials from active plant dismantling. Top ducts 28.6m³; Bottom ducts 61.5m³ RPV, skirt & debris duct 353.8m³
Nuclear Restoration Services Ltd (NRS) | Sizewell A | LLW
9F33
- Ion Siv Unit Filters
Filtration of cooling pond water.
Nuclear Restoration Services Ltd (NRS) | Sizewell A | ILW
9F37
- Sludge
The sludge originates from routine filtration of liquid effluents and cooling pond water treatment and from clean-up operations of the cooling ponds and Effluent Treatment Plant / associated storage tanks. Sludge particles may be up to 5 millimetres in size by definition. This sludge is held in Wash Collection Tank/ Active Effluent Tank.
Nuclear Restoration Services Ltd (NRS) | Sizewell A | ILW
9F38
- PWTP Filters - Sand and Gravel
Sand and gravel from sand pressure filters in the Pond Water Treatment Plant. Sludge and solids are removed by mechanical filtration through a mixed bed of sand and gravel which is then backwashed into sludge tanks. The filters will be emptied of sand and gravel when the ponds are decommissioned.
Nuclear Restoration Services Ltd (NRS) | Sizewell A | ILW
9F39
- Fuel Skips
Fuel skips in the fuel storage pond became redundant when the reactors were defuelled and the fuel was sent for reprocessing.
Nuclear Restoration Services Ltd (NRS) | Sizewell A | ILW
9F42
- AETP Filters - Sand and Gravel
Sand and gravel from sand pressure filters in the Active Effluent Treatment Plant. Sludge and solids are removed by mechanical filtration through a mixed bed of sand and gravel which is then backwashed into sludge tanks. The filters will be emptied of sand and gravel when the plant is decommissioned.
Nuclear Restoration Services Ltd (NRS) | Sizewell A | ILW
9F43
- FED Nimonic/Zirconium
Nimonic springs and zirconium alloy components were originally incorporated into Magnox fuel element top end fittings. These components are accumlated as waste when the fuel elements are desplittered.
Nuclear Restoration Services Ltd (NRS) | Sizewell A | ILW
9F45
- Fuel Bottle
A leaking fuel element was removed from the reactor in November 2007 and placed inside a capped bottle to prevent excessive Cs-137/134 leaching into the ponds. The element was left in the bottle until June 2008 causing damage to the magnesium fuel can. Ion exchange resin cartridges were used to remove Cs-137/134 from the bottle prior to removing the element. The fuel element was intact when removed from the bottle and dispatched to Sellafield for reprocessing. High dose rates (>1Sv/hr) were observed on the bottle after the element was removed. The waste consists of the Fuel debris bottle, its cap containing ion exchange resin and an associated ion exchange resin column.
Nuclear Restoration Services Ltd (NRS) | Sizewell A | ILW
9F46
- Fuel Skips in Pond
Fuel skips were used for the storage and transport of fuel elements. Now the reactors have been defuelled and all the fuel sent off-site for reprocessing the fuel skips are redundant.
Nuclear Restoration Services Ltd (NRS) | Sizewell A | LLW