Spallation Neutron Source Safety Program Overview .


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Spallation Neutron Source Security Program Review. Samuel McKenzie ESH Organizer Quickening agent Frameworks Division. April 13, 2005. Spallation Neutron Source. SNS Site
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Spallation Neutron Source Safety Program Overview Samuel McKenzie ESH Coordinator Accelerator Systems Division April 13, 2005

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Spallation Neutron Source SNS Site – 2004 The SNS will start operation in 2006. At 1.4 MW it will be ~8x ISIS, the world\'s driving beat spallation source. SNS will be the world\'s driving office for neutron diffusing. It will be a short drive from HFIR, a reactor source.

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SNS will be World-Class!

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SNS Accelerator Complex Front-End: Produce a 1-msec since quite a while ago, hacked, low-vitality H-shaft LINAC: Accelerate the pillar to 1 GeV Accumulator Ring: Compress 1 msec long heartbeat to 700 nsec H-stripped to protons Deliver bar to Target Chopper framework makes holes 945 ns smaller than usual heartbeat Current 1 ms macropulse 1ms

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SNS High Level Baseline Parameters Proton bar vitality on target 1.0 GeV Proton bar ebb and flow on target 1.4 mA Power on target 1.4 MW Pulse reiteration rate 60 Hz Beam macropulse obligation factor 6.0 % H - crest linac ebb and flow 38 mA Ring fill time 1.0 ms Ring bar extraction gap 250 ns Protons per beat on target 1.5x10 14 Proton beat width on target 695 ns Linac length 335 m Total Beamline Length 903 m

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Electrical power (associated load) 78 MVA Electrical power (operational demand) 49 MVA Facility Parameters Area size of development site 86 sections of land Access and administration roads 5 miles Quantity of uncovering at completion 1.5 MCY Concrete 88,000 CY Structural Steel 4,870 T Cooling water (warm load rejection) 37.4 MW Cooling Tower water top stream rate 21,000 gpm Size of structures and structures 616,000 sq ft Site inhabitance, including clients, up to 500 people

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Target Systems Converts up to 2 MW of 1 Gev Protons at 60 Hz into valuable short neutron beats. Real Subsystems Mercury target. 3 Supercritical hydrogen mediators with related cryogenic frameworks and one encompassing water arbitrator. Beryllium reflector framework. Center vessel for target, mediator, reflectors. 10 m distance across iron protecting with screens for neutron shafts. Utility frameworks including substantial and light water. Remote Handling frameworks. Instrumentation and controls. Linac, Ring Injection and Ring Extraction shaft dumps.

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Target Building and Instrument Layout 1B - Disordered Mat\'ls Diffractometer – DOE Funded (SING) – Commission 2010 2 - Backscattering Spectrometer – SNS Funded – Commission 2006 18 - Wide Angle Chopper Spectrometer – IDT DOE Funded – Commission 2007 17 - High Resolution Chopper Spectrometer – DOE Funded (SING) – Commission 2008 PROTONS 3 - High Pressure Diffractometer – DOE Funded (SING) – Commission 2007 14B - Hybrid Spectrometer – DOE Funded (SING) – Commission 2011 15 – Spin Echo 4A - Magnetism Reflectometer – SNS Funded – Commission 2006 13 - Fundamental Physics Beamline – IDT Funding TBD – Commission TBD 4B - Liquids Reflectometer – SNS Funded – Commission 2006 5 - Cold Neutron Chopper Spectrometer – IDT DOE Funded – Commission 2007 12 - Single Crystal Diffractometer – DOE Funded (SING) – Commission 2009 ? – Chemical Spectrometer 6 - SANS – SNS Funded – Commission 2007 11A - Powder Diffractometer – SNS Funded – Commission 2007 9 - Engineering Diffractometer – IDT CFI Funded – Commission 2008 60 m

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Target Region Within Core Vessel Target Module with jumpers Outer Reflector Plug Target Inflatable seal Core Vessel water cooled protecting Core Vessel Multi-channel spine

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History of SNS In 1998 DOE Broke Ground on the SNS with Critical Decision 4 (end of Project) in 2006 In 2000 the University of Tennessee and Battelle Teamed to win the Contract to Manage Oak Ridge National Lab. Soon thereafter "Another" SNS Project Director was Hired and given Equal Status with the ORNL Lab Director. A Stream-Lined Safety Program was Envisioned with Little if any binds to ORNL. In 2002 "Another" Project Director was Hired and put SNS Back Under the Direction of ORNL.

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Standards Based Management System (SBMS) A Proven System That Both PNNL and BNL Utilizes. Also INL will soon start their Implementation Process. Makes "One Stop Shopping" for Work Control and the Standards that the Work Shall as well as Should Follow Clearly Defines ALL the Necessary Steps Needed to Perform a Certain Task.

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Safety Overview Since 2000, SNS (Non-Construction) has had 15 Recordable Injuries and Illnesses (RIIs) Cases and 1 Day with Restrictions Case (2002). Furthermore, ASD has 3 circumstances where there were infringement of Internal Posting or potentially Procedures (i.e. Bolt Out Tag Out, Internal Parameters, and so on.). The damage rate at SNS stays praiseworthy (1.2 for each 200,000 hours), and we should keep on striving for a proceeded with safe workplace. In the coming months, we (SNS) will accept accountability for the art work contract from Knight-Jacobs. This implies we will be specifically in charge of their state of mind of, and duty to, wellbeing.

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Safety Chain

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Electrical Systems By far our most hazardous action is dealing with de-empowered electrical frameworks, circuits and boards. ASD has frameworks in each feature of its operation that uses high streams, voltages as well as capacitances! A thorough Lock Out Tag Out (LOTO) program is an absolute necessity. Our LOTO program serves us well and each gathering has a Safety Officer in charge of consistence with both NEC and SNS rules. Moreover, we have offered more than 10 Electrical Safety Classes that arrangement with the different parts of our electrical gear.

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Research Safety Summaries Research Safety Summaries (RSSs) are set up at the Group and Lab Level. Recognize perils a specific gathering is presented to in their work. Help the Group Leader in deciding the fitting preparing and controls that should be set up preceding performing work. Characterizes the entire rundown of SBMS prerequisites for that Group.

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Job Hazard Analysis Job Hazard Analysis (JHA) - lynchpin of our Safety Program handle CLEARLY comprehended by all ASD representatives and is the premise of Integrated Safety Management (ISM). Work is characterized in surely knew strides. Related dangers decided at each progression. Action(s) built up to relieve dangers (i.e., wellbeing glasses, erect a framework, and so forth.). Perform work inside JHA rules. JHAs are routinely reexamined for fulfillment and improvement. Laborer driven program with steady input on how we can keep on making the work more secure.

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ASD Example 1 Hoisting and Rigging On Nov 5, 2001 An Employee at our old Receiving Facility was Lifting a Dipole Magnet when One of the Eye Bolts Failed. As a Result of this Event we (ASD) organized a Formal Process of Developing a Lift Plan for every one of our Lifts. A point by point JHA is Prepared and the Documentation is looked into by one of a Select Group of Mechanical Engineers The Lab\'s Program is Modeled after our own and Our External Accelerator Review Committee has put forth a few expressions complimenting us on the meticulousness and culmination of our Hoisting and Rigging Program

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ASD Example 2 Lock Out Tag Out On Nov 22, 2002 An Employee was investigating a Lock and Tag connected to a Circuit Breaker in the Klystron Building when the tag fell off in the representative\'s hand. The episode was not legitimately revealed. As a Result of this Event we (ASD) instantly gave a LOTO Practical Factors Training Program for all Affected Employee. Accordingly of finding extra lacks we gave LOTO Verification Training. ASD has constantly utilized the OSHA Required Equipment Specific LOTO Process. The lab\'s program now utilizes this procedure also.

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Where There\'s Smoke… ..There\'s not ALWAYS A Fire! On Sept 9, 2004 An Evacuation of the Linac Tunnel, Klystron Gallery and Front End Building Occurred while we where Commissioning our Warm Accelerator (~150 MeV). This departure was because of Our Early Detection Smoke Alarm System.

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Smoke Event Cont\' This clearing happened because of a Cryogenic Gas System radiator being in nearness to Canvas Bags containing Steel Shot that is utilized for protecting Purposes. The 2 kW Heater is regularly utilized amid the Initial Cryomodule fill prepare. For our 4 Kelvin chill off the framework stayed set up ~1 month. Because of Thermocouple Placement and different variables the framework did not react legitimately and cause the pipe to Overheat.

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Smoke Event cont\' This Overheating never brought on an open fire discharge however burnt a few Canvas Bags that Held the Steel Shot.

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Conclusion SNS has made a great showing with regards to of building up a compact framework grasping SBMS and ISM to assemble a world class quickening agent office! We need to keep on learning from our own particular slip-ups and from others. We must be transparent about our slip-ups and also our victories. We should Continue to comprehend what we need to do before we play out the Work (ISM). We need to perceive that the dangers inside our divisions keep on increasing as we go into operation with more effective gear We must know, that we share issues. Perform work in workplaces, stockpiling structures and so on that convey their own particular hazard, which more often than not will be not as evident as the specialized ones.

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