NSLS II ASAC Review

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NSLS II ASAC Review
Conventional Facilities Briefing Marty
Fallier Director for Conventional
Facilities National Synchrotron Light Source II
Project October 10, 2006
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Outline

• Conventional Facilities Scope
• Facility Overview
• Facility Program
• WBS
• Tunnel Design Access
• Differential Settlement
• Vibration Mitigation
• Utility Support
• Temperature Stability
• Control Room
• Schedule

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NSLS II Facility Overview
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Site Plan
NSLS
Conf. Center
Service Bldg Typ 4
CLOB
CFN
Future JPsi
RF-LINAC AREA
Future Guest House
LOB Typ 4
Ring Bldg
Loading
Underpass
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Building Program
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Conventional Facilities WBS
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Floor Plan CLOB 1st
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Floor Plan - CLOB 2nd
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Floor Plan CLOB 3rd
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Tunnel Design

• Roof and wall thicknesses generally driven by
  shielding criteria except inner wall in area of
  berm (just structural)
• Outer wall (ratchet wall) is HD concrete
• During T-I will study whether precast or poured
  in place provides best balance of technical and
  cost performance
• Tunnel floor thickness driven primarily by
  vibration criteria
• During T-I will do modeling to arrive at optimal
  thickness and section shape
• Rigidly connected to exp. floor to create
  monolithic floor
• Penetrations from above for power and cooling
  water
• Penetrations from sidewall for HVAC Supply and
  Return

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Tunnel Design - Ring Building Section
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Tunnel Access

• Egress for life safety achieved by exits at each
  service building location
• Large shielded doors for equipment access
  provided at Service buildings for tunnel entry
• Mandoors and labyrinth provided at each Service
  building
• Vehicle ramp to roll-up door at 2nd floor of each
  Service Bldg provides equipment access to
  electrical mezzanine at top of tunnel
• RF LINAC areas integrated with CLOB structure
  have similar access as Service Bldgs

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Service Bldgs
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Differential Settlement

• Measures to reduce potential for differential
  settlement include
• Thorough geotechnical analysis of site to
  identify problem areas
• Minimize footprint over disturbed areas
• Set finished floor elevation for maximum cut and
  minimum fill
• Early site preparation contract for maximum time
  to cut, fill, compact and observe settlement
  prior to building contract.
• Monolithic slab design for tunnel and
  experimental floor
• High slab stiffness, Tunnel 36 Experimental
  Floor 18
• Building loads isolated from tunnel and
  experimental floor slab
• Access corridor isolated from experimental floor
  slab

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Vibration Mitigation

• Measures to be implemented in conventional design
  include
• Monolithic slab for accelerator and
  experimental floor
• Slab thickness and section changes based on
  vibration modeling results during Title I
• Possible use of polymer admixtures for enhanced
  damping characteristics
• Isolation of bldg structure from tunnel and slab
• Inertial bases and isolation of machinery
• Low flow velocity design for ducts and piping
• Limited use of duct and piping isolation to avoid
  conversion transmission of low frequency
  vibration
• Commissioning of equipment and systems to include
  alignment, balancing vibration measurement

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Utility Support

• Utilities run underground in center of ring and
  distributed to five service bldgs (one in CLOB
  RF/LINAC area)
• Minimizes pipe runs and pipe size in bldg proper
• Minimizes potential noise and vibration impacts
• Mechanical Utilities include
• Chilled water from expansion of Central CHW plant
• Tower water from process cooling water tower
• Potable water, compressed air, sanitary etc.
• Electrical Utilities distributed via substation
  and load center at each services bldg

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Utility Support
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Utility Distribution
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Temperature stability

• Key temperature stability requirement is tunnel
  air _at_ /- 0.1C at a given location with respect
  to time.
• Requires high resolution industrial grade
  instruments and controls with excellent
  repeatability.
• Control scheme using programmable controllers and
  reheat with temperature reset capability
• Space temp setpoint of 85 F is nominally
  equivalent to process cooling water supply
  setpoint to minimize temperature gradients
• Should be readily achievable provided loads to
  accelerator components are relatively
  steady-state

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Tunnel Temperature Control
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Tunnel Air Distribution
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Control Room

• The Accelerator Control Room is located on the
  second floor of the CLOB above the LINAC-RF area
• Provides ready access to Tunnel, RF LINAC areas
  and electrical mezzanine
• Computer room is adjacent to control room and
  control room operators meeting room
• Additional study is required to identify optimal
  cable routing which may indicate computer room
  may be more advantageously located on 1st or 3rd
  floor

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Schedule

• Conventional Facilities Schedule has been
  coordinated with Accelerator requirements.
• Construction sequencing will enable
• Availability of Ring Bldg for LINAC, booster and
  storage ring installation to begin June 2011
• LINAC Booster can be sooner if required
• Control/Computer room availability in CLOB -
  August 2011
• Conventional Construction complete - October 2011