1. Bunker -Target interfaces
Operational standpoint
A systems standpoint
Beyond technical requirements
Operational requirements need to be under stood as they are design drivers
Bunker CDR 2.0
Iain Sutton
On behalf of the NSS project team

2. The Bunker an important ‘node’
systems
Target systems
Instrument systems
Logistics
NSS
Bunker system
Instrument systems
Target
NBPI
LSS / NBW
Facility
Crane
Utilities
What equipment is there
Instrument coponent
Target systems
Services
PSS
Bunker itself
Interdependencies Bi-directional Bunker is at once an ‘operational context’ and system within broader context …

3. Interfaces Requirement Interface
System requirements specification (SRS)
Installation and removal access
Interface
ESS _3 Bunker - target monolith structures
ESS _2 Bunker – Insert exchange tool (IET)
ESS ICD-R NBPP-NSS, 1064NBPP-003

4. ESS-0060210, Bunker System, System Requirements Specification (SRS)
BS.SyR-09
Title: Installation/removal access for Target Systems elements.
Statement: The Bunker System shall provide safe restricted access into the bunker for the installation/removal of Target Systems elements.
Rationale: The Bunker System design shall be modular in design to allow for varying partial openings of sections of the bunker that suit the size for the handling of the Target Systems elements that need to be installed and removed in the bunker.
Traceability: ConOps [1].
Verification: Review of the system design.

5. Unfolding the requirements
Access is required for the following Target systems
Beam extraction (Insertion tool)
Light shutter
Beam-port window
‘Target utilities’
Principal requirement(s) on bunker
Removable roof
Work area within volume free from permanent structures
Bunker support structure
Instrument components
Crane capacity
Insertion tool
Window
utilities
Light Shutter

6. Construction phase Target system Installation
Target systems installed from monolith face / instrument hall
Light Shutter system
NB Optics (NBEX)
Beam-port window
Target installations are primarily scheduled before bunker construction
Access
Free work area

7. Operational phase Target systems access
Operation :Beam port activation
Periodicity :yearly*
IET : Remote handling tool
& Cask for in-monolith plug
Mass 18+ tons
Length 5m
Requirement fulfilled
Access
Free work area
Roof removal
Level of effort
Blocks handled
Structural cross beams 1
Duration hrs

8. 0086197.3 Working area Rear wall R9 Pillar R6 Pillar
Main drawing ESS _3
R6 detail ESS _2

9. Hall D01 IET Clearance D02  ****** Protons D02 Hall D03
W4 BIFROST
Q2 2019
W6 MAGIC
Q2 2019
W7 TREX
Q2 2019
N7 LOKI
Q2 2019
Hall D01
W5 MIRACLES
Q1 2022
W8 HEIMDAL
Q3 2023
N5 FREIA
Q3 2023
W3 C-SPEC
Q2 2019
W11 TEST
Q2 2019
W2 BEER
Q2 2019
IET Clearance
W1 NMX
Q2 2019
D02
Site clearance for IET operations require extensive removal of instrument components
Requirement on Instruments
 ****** Protons
D02
S ODIN
Q2 2019
E2 ESTIA
Q2 2019
W3 SKADI
Q2 2019
W2 DREAM
Q2 2019
E7 VESPA
Q2 2022
Hall D03

10. Monolith face interface ESS 0086925_2
Principal aspects
‘Skirt gap’
R6 pillar gap

11. ESS 0086925_2 Monolith skirt gap
The nominal gap between systems has been maintained
Monolith skirt shield wall
55 mm clearance
75 mm clearance
25 mm clearance
20 mm clearance
Monolith
shielding

12. ESS _2 Monolith R6
Additional requirement: R6 pillars to have a +/- 7mm tolerance on vertical position.

13. Radiological interfaces Target – NSS
Monolith - Bunker
Through Bulk
10%
Gap streaming
90%
Neutron Beam
Through Bulk
Working assumption
Radiation emitted from all target sources into the bunker cavity, at R6, shall be less than 10% of total emitted by neutron beams.
“The bunker shall shield the public from ALL sources within it

14. Radiological interfaces ICD-R NBPP-NSS ESS-0191606
Next ?
Light shutter
Port Block
Outer shielding
Puck ?

15. Radiological interfaces ICD-R NBPP-NSS ESS-0191606
Next ?
Light shutter
Port Block
Outer shielding
Puck ?

16. Implicit requirements
Logistics

17. Bunker – NBEX logistics ESS-0084988
IET transport
ACF docking
IET handover on bunker roof from bunker crane to D01/D03 crane
Exchange route NBPI/NBPP 1 3 2
Removal from Bunker Monolith crane
Drop down onto Bunker transfer zone
Removal with hall crane

18. Implicit requirements Bunker roof ‘transfer zone’
Experimental Hall crane coverage area
Cranes crossover (load interchange) area
Monolith crane coverage area

19. Logistics Principal requirement Free height below hook > 3m IET
3,6m free height
6,7m from TCS
A hook height of 2.5m is a minimum for current equipment
2.7m preferred
Auxiliary hoist for instrument.
Special mountings will be required to ensure installation compatibility
Coverage
Side walls 800mm
Monolith face 400mm
1,3m
3,1m
1.8m N

20. Take away
What could possibly go wrong ?

21. Summing up
The principal interface with respect to Target have been identified and defined.
Some integration of radiological interface required
Currently updates of interface documents are progressing from both sides (Target and Bunker / NSS) as design progresses in parallel.
Tolerances are tight, continued vigilance approaching detailed design is critical.
Guidelines will be issued at IKON for;
Material use (low activation)
Remote handling interfaces.
Service routing.
Logistics requirements.
Starts with having a plan
Push for reliability
Building in Maintainability , manage risk
Priority on critical systems
Operational Integration
Tooling
Schedules
Spares
Work with experienced parters
It not going to be perfect use the precious early years to Learn
don't reinvent the wheel SNS
ISIS
Ensure future compatibility
upgrade path

22. Thank you for your attention !
NSS Projects Division
Target

23. Interventions Types and frequency
SCHEDULED
Type I(A) PERIODIC
Installation
Decommissioning
Type I(B)
REGULAR
Inspection & Maintenance
UNSCHEDULED
Type II
BREAKDOWN
H2 / H3
events
Interventions may be considered as two types;
Type 1: Scheduled activities
Type 1A: Long periodicity events
Installation / Decommissioning
Type 1B: Short periodicity events
Inspection/ Adjustment /Replacement
Type 2: Unscheduled activities
(‘random’ events with 5-20 incidents p.a.)
Breakdown repair
Inspection / Adjustment / Replacement
Accident scenario
Interventions per year per bunker for a full suite of instruments in normal operation

24. Periodic Late install & renewal
Maintenance
Maintenance
Replacement
BOT
@BOT
16 live / 26 Blind
BOT +5 years
+6 live
BOT +10 years
+5 live
BOT +15 years
Start of renewal program
2 or 3 a year ?