SURVIVABILITY (VULNERABILITY) -
Example
Hierarchical Spare Supply System
Hierarchical FRU (Field Replacement Unit) Supply System is a project
with objective to create maintenance support for terrestrial
telecommunication system developed by Hughes Networks System, Inc.
The problem was to compile mathematical model and software tool for
design a three-level FRU Supply System, consisting of Central Stock,
Regional Stocks and Mobile Repair Shops with individual stocks. The
system should satisfy given requirements of QoS (Quality of Service)
and minimize the entire system cost for specified rules of spare
replenishment.
Theoretical part of the project and partial implementation has been
completed.
Contact:
Dr.Sc. Igor Ushakov
e-mail:
iushakov2000@yahoo.com
(858) 623-3214,
address: 3525 Lebon Dr. #215, San Diego, CA 92122
see
Program Guide and
Presentation...
List of Carried Stock:
Optimal Allocation of Field
Replacement Units at Mobile Repair Station
List of Carried Stock of Field Replacement Units (FRU) is a project
with objective to improve the carried stock in such a way that
improved QoS (Quality of Service) without any additional expenses.
The project has been done for Hughes Networks System, Inc.
Customers’ population is dispersed over a huge territory. Each
customer has its independent satellite telecommunication system. For
maintenance and repair of the customers’ equipment, the company uses
Mobile Repair Stations (MRS). Each repair station has a limited
number of FRU for needed replacement. If there is no needed FRU at
the MRS, the replacement is postponed until its delivery.
The problem was to find such a nomenclature of FRU at the MRS stock,
which on the average decrease the number of postponed replacement at
the customer’s site.
For solving the problem a simple software has been developed and was
implemented in the for zoning in Florida.
Expected financial gain was about 400 thousand dollars a year. One
should take into account that that profit has been obtained due to
correct choice of FRU nomenclature, i.e. without any expenses.
Contact:
Dr.Sc. Igor Ushakov
e-mail:
iushakov2000@yahoo.com
(858) 623-3214,
address: 3525 Lebon Dr. #215, San Diego, CA 92122
see Presentation...
