4 Grounding implementation in bunker areas Grounding Implementation

  • Slides: 8
Download presentation
4 - Grounding implementation in bunker areas Grounding Implementation Workshop Lund, 29 th August

4 - Grounding implementation in bunker areas Grounding Implementation Workshop Lund, 29 th August 2018 Thomas Gahl, Gabor Laszlo

Implementation challenges North D 02 West D 02 East D 02 West D 03

Implementation challenges North D 02 West D 02 East D 02 West D 03 2

Implementation challenges Cabinet placement 3

Implementation challenges Cabinet placement 3

Implementation challenges • • • All exposed metallic parts have to be grounded unless

Implementation challenges • • • All exposed metallic parts have to be grounded unless it is totally passive. Is there any instruction for the implementation and method of connection? Is there a condition to avoid compulsory grounding? Do we need special considerations when we fix/put thing on the floor, the base-plates, or fix things to bunker components? Inside the bunker: Is there any special consideration/NSS rule for the isolation of any of the in- bunker components (including utilities)? Do we need special considerations for the wall feedtroughs? 4

Implementation challenges • • • How do we distinguish the bunker zone components from

Implementation challenges • • • How do we distinguish the bunker zone components from the neighboring zones? How do we isolate the bunker zone components from the neighboring zones? How do we identify the cases when we need isolation? Is it a requirement for the bunker zone to be able to be separated from the ground of the building? 5

7. Connection points for the bunker in D 01 6

7. Connection points for the bunker in D 01 6

Utility routing guidelines for the bunker 1. 2. 3. 4. 5. 6. 7. All

Utility routing guidelines for the bunker 1. 2. 3. 4. 5. 6. 7. All utilities (except cooling) shall enter the bunker though the roof level feed through. 1. Cooling services shall enter the bunker at floor level through corner blocks 1. All exceptions must be formally approved by NSS management 1. 2. Roof level routes shall be directly adjacent to vertical support pillars. Floor level routes shall run adjacent to side or rear walls to a point adjacent to the beamline then along the line of vertical support pillars All Utilities (except cooling) shall use the feed through located above their respective beam port. Utilities shall be follow the shortest route from point of entry to point of use All unities shall be exclusively supported by vertical support pillars or walls. 1. No floor supports 1. 2. Roof level routes shall be positioned 25 mm below the level of horizontal crossbeams. Floor level routes shall be positioned 50 mm above floor plates 1. 2. Cable trays shall be orientated vertically and located directly adjacent to supports pillars Fluids shall be stacked vertically and positioned below cable trays 1. 2. Cable trays shall be routed around the extraction volume avoiding removal Fluids shall be routed around the extraction envelope, or if this results in unacceptable performance, removable sections shall be routed across the volume with the approval of RH. All routes shall be vertical distanced from the neutron beam, to reduce exposure to radiation and maximize accessibility. Utilities shall be packaged to minimize their horizontal foot print in order to facilitate access and visual inspection. Utilities shall be routed to permit the removal of ‘Service components or RH components’ without their removal or displacement. 7

Thanks! 8

Thanks! 8