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Title: Reliability analysis for LEB ring magnet power system in SSC

Abstract

The LEB ring magnet power system contains six subsystems, supervisory control, power supplies, regulation, DC bus, resonant cells, and fault sensing network. The system availability of the total LEB RMPS is required to be 0.999. The work in this paper is to allocate the overall LEB RMPS reliability requirement into reliability requirements for each of the subsystems and lower-tier items. The Feasibility-of-Objective technique combining with engineering experience is the key for the allocation. MIL-HDBK-217F is used to derate SCR components. 7 refs., 5 figs.

Authors:
Publication Date:
Research Org.:
Superconducting Super Collider Lab., Dallas, TX (United States)
Sponsoring Org.:
USDOE; USDOE, Washington, DC (United States)
OSTI Identifier:
5986268
Report Number(s):
SSCL-Preprint-7; CONF-911106-19
ON: DE92003000; TRN: 91-033025
DOE Contract Number:
AC35-89ER40486
Resource Type:
Conference
Resource Relation:
Conference: IEEE nuclear science symposium, Santa Fe, NM (United States), 5-9 Nov 1991
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; PARTICLE BOOSTERS; POWER SYSTEMS; RELIABILITY; FAILURES; MAGNETS; SUPERCONDUCTING SUPER COLLIDER; ENERGY SYSTEMS; STORAGE RINGS; 430303* - Particle Accelerators- Experimental Facilities & Equipment

Citation Formats

Smedley, K. Reliability analysis for LEB ring magnet power system in SSC. United States: N. p., 1991. Web.
Smedley, K. Reliability analysis for LEB ring magnet power system in SSC. United States.
Smedley, K. 1991. "Reliability analysis for LEB ring magnet power system in SSC". United States. doi:.
@article{osti_5986268,
title = {Reliability analysis for LEB ring magnet power system in SSC},
author = {Smedley, K.},
abstractNote = {The LEB ring magnet power system contains six subsystems, supervisory control, power supplies, regulation, DC bus, resonant cells, and fault sensing network. The system availability of the total LEB RMPS is required to be 0.999. The work in this paper is to allocate the overall LEB RMPS reliability requirement into reliability requirements for each of the subsystems and lower-tier items. The Feasibility-of-Objective technique combining with engineering experience is the key for the allocation. MIL-HDBK-217F is used to derate SCR components. 7 refs., 5 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 1991,
month =
}

Conference:
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  • The LEB ring magnet power system contains six subsystems, supervisory control, power supplies, regulation, DC bus, resonant cells, and fault sensing network. The system availability of the total LEB RMPS is required to by 0.999. The work in this paper is to allocate the overall LEB RMPS reliability requirement into reliability requirements for each of the subsystems and lower-tier items. The Feasibility-of-Objective technique combining with engineering experience is the key for the allocation. MIL-HDBK-217F is used to derate SCR components.
  • Implementing corrective actions from the Failure Reporting, Analysis and Corrective Action System (FRACAS) is one of the methods from the reliability integrity approach used to ensure that magnets can achieve reliability and availability goals. FRACAS achieves early feedback by monitoring magnets from assembly through operation, thereby saving time and reducing the number of items that may have a particular design or manufacturing process defect. This paper will discuss the FRACAS program as it has developed in the Magnet Systems Division of the Superconducting Super Collider Laboratory, the type of information FRACAS has accumulated on the magnets, and corrective actions implementedmore » to help achieve the reliability and availability goals.« less
  • Implementing corrective actions from the Failure Reporting, Analysis and Corrective Action System (FRACAS) is one of the methods from the reliability integrity approach used to ensure that magnets can achieve reliability and availability goals. FRACAS achieves early feedback by monitoring magnets from assembly through operation, thereby saving time and reducing the number of items that may have a particular design or manufacturing process defect. This paper will discuss the FRACAS program as it has developed in the Magnet Systems Division of the Superconducting Super Collider Laboratory, the type of information FRACAS has accumulated on the magnets, and corrective actions implementedmore » to help achieve the reliability and availability goals.« less
  • In the past two years a number of changes have been made to the Main Ring Magnet Power Supply System to improve current regulation and long term drift. Some of the modifications discussed include new computers, new passive filters, direct analog feedback, a voltage-to-frequency converter for bend bus regulation, and a ''smart'' Nuclear Magnetic Resonance probe. Among the improvements described are the attenuation of power supply ripple by a factor of five and the reduction of long term flattop drift by an order of magnitude. 2 refs.
  • The Magnet Power Supply System is described by specification, design, hardware, and operating experience. A unique system for the one Hz, 1.5 GeV Booster, where the wideband QF and QD power supplies track the dipole current to within 0.1% at injection will be detailed. AC distribution system considerations related to inverting the stored energy of the booster magnet back into power grid will be discussed. The rational for linear correctors and individual quad supplies (225 total units) will be placed within the context of the storage-ring requirements.