supportability & serviceability1 after the sale design for supportability (serviceability)
TRANSCRIPT
Supportability & Serviceability 1
After the Sale
Design for Supportability (Serviceability)
Supportability & Serviceability 2
The Roadmap
Definition and explanation of logistics and supportability
The elements of logistics and system support
Supply chain factors Transportation and packaging factors Warehousing and distribution factors
Supportability & Serviceability 3
Definition of Supportability
Definition: Supportability refers to the
inherent characteristics of design and
installation that enable the effective and
efficient maintenance and support of the
system throughout the life cycle.
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Definition of Supportability Continued…
Objective: To address not only the incorporation of reliability and maintainability characteristics in the design of the prime elements, but the design of the support infrastructure that is responsive to the demands of the prime elements.
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Overall Logistics Cycle
Definition of Logistics: Iterative approach to the management and technical activities necessary to, Develop support requirements. Acquire the required support. Provide required support at minimum
cost.
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Overall Logistics Cycle Continued…
First segment of overall logistics: includes the procurement, distribution, transportation, warehousing, and ultimate delivery to the customer.
Second segment of overall logistics: when system fails and items needs to be returned for intermediate-level and depot level.
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Elements of Support
Integrated logistics support
Supply support
Technical dataInformation systems,
& Database structures.
Computer resources
Design InterfacePackaging, handling
storage,& transportation
Maintenance facilities
Training & Training support
Maintenanceplanning
Maintenancepersonnel
Support equipment
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Elements of Support Continued…
Maintenance personnel: Installation, checkout, and sustaining support and maintenance.
Training and training support : For system operator and maintenance personnel for Life cycle.
Supply Support: Spares, repairable, non-repairable, consumables, special supplies etc.
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Elements of Support Continued…
Support Equipment: Tools, condition monitoring, diagnostic, checkout, special test, calibration equipments etc.
Computer Resources: Software necessary to support scheduled and unscheduled maintenance.
Packaging, handling, storage, and transportation: Special provisions, containers and supplies necessary.
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Elements of Support Continued…
Maintenance Facilities : Includes facilities to support all the scheduled and unscheduled maintenance actions at all the levels.
Technical data, information systems, database structure: Includes system installations, checkout procedure, operating and maintenance instructions, modification instructions etc.
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Measure of Supportability
Supply Chain Factors are Capability: The ability to accomplish all
of the functions required. Availability: The ability to respond to
any, or all, of the requirements at any point in time when needed.
Quality: The process responsiveness in terms of stated customer objectives.
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Transportation Measures
Factors for evaluating the effectiveness of transportation are
Transportation routes Transportation capacity or capability Transportation time Transportation cost
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Transportation Measures Continued…
Figure 15.5 The various forms of transportation.
Railtransportation
Pipelinetransportation
Highwaytransportation
Watertransportation
Airtransportation
Rail-truck (piggyback)Trailer-on-flatcar
Container-on-flatcar
Truck-water (fishyback)Roll-on/roll-off
Container-on-ship
Air-truckTruck-on-aircraft
Container-on-aircraft
Rail-waterTrain-on-ship
Container-on-ship
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Packaging Measures
Availability: transportation capability will be available when required.
Reliability: it will complete its mission as planned.
Time: transport a product from on point to another.
Cost: the cost of transportation or per one-way trip.
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Packaging Measures Continued…
Maintainability: applicable transportation capability can be required within specified time and resources in the event of a failure.
Life-cycle cost (LCC): the cost of a given transportation capability for a designated period of time.
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Warehousing and Distribution Measure
The basic functions of warehousing are Movement Storage Information transfer
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Warehousing and Distribution Measure
Continued…
The movement function: Receiving: the unloading of goods and
products from an inbound carrier. Transfer: the physical movement of
products into the warehouse for storage. Order picking: the selection of products
from storage in response to customer orders.
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Warehousing and Distribution Measure Continued…
Cross-docking: the movement of products directly from the inbound receiving dock to the outbound shipping dock.
Shipping: the packing, loading on an outbound carrier, and shipment of products to the desired customer destinations.
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Types of Warehouses
Private & Public warehouses General merchandise warehouses Commodity warehouses Bulk-storage warehouses Bonded warehouses Temperature-controlled warehouses Houshold goods warehouses
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The metrics in Warehousing
Time that it takes to ship a product Cost of product shipment – from storage to
customer Cost of storage Percentage of space utilization Volume of product handled
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Spares, repair parts and related inventory factors
The inventories associated should be able to supply spare parts for unscheduled as well as scheduled maintenance actions
The required inventory of spares dependson system maintenance concept and specific type and quantities are identified for each level of maintenance
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Factors affecting quantity of spares
Spare and repair parts covering actual item replacements occurring as a result of corrective & preventive maintenance
Additional stock level of spares to compensate for repairable items in the process of undergoing maintenance
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Factors affecting quantity of spares
continued……..
Additional stock level of spares to compensate for the procurement lead times for item acquisition
Additional Stock level of spares to compensate for the condemnation of scrap age or repairable items
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Inventory system considerations
Too much inventory to meet all demands leads to increased cost of maintaining the inventory
Lack of appropriate inventory will lead to stock depletion and the system not being operational leading to higher costs
Optimum balance between inventory on hand, procurement frequency and procurement quantity is needed
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General deterministic inventory system geometry
Operating level
Peak Inventory
Safety stock
Periods of time, days
Qu
anti
ty o
f it
ems
in s
tock
Consumption
Consumption
Order Point Order Point
Rec
eip
ts, Q
Rec
eip
ts, Q
Procurement lead time
Reorder cycle
Zero stock
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Economic Order Quantity (EOQ) See Pages 257-263
Q* is called EOQ
h
p
hp
hpi
C
DCQ
C
Q
DC
dQ
dTC
QC
Q
CDCTC
2
02
2
*
2
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Design review and evaluation
Design reviews are done to ensure
1. Prime-mission related elements are designed to be supportable in an effective and efficient manner
2. Design of logistics and maintenance support infrastructure adequately responds in fulfilling all system requirements
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Design review and evaluation continued…….
3. If requirements are met, the design is approved and the program enters into the next phase
4. If requirements are not met ,the appropriate changes are
initiated for corrective action
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System Requirements Analysis
Operational requirementsMaintenance and support requirements
Technical performance measuresFunctional analysis and allocation (system level)
Development of design criteria
Identification of specific design considerations and design-dependent parameters
Development of design review and evaluation checklist
Prepare review questionsprioritize questions in terms of degree of importance
develop design checklists
Implement the use ofchecklist for evaluation
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Fig. 15.10
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Supportability Analysis
The supportability analysis (SA) constitutes the integration and application of different analytical techniques/methods to solve a wide variety of problems.
SA is the process employed on an iterative basis throughout system design and development that addresses the issue of supportability
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Supportability Analysis continued…..
SA aids in the evaluation of prime equipment design characteristics in terms of logistic support requirements.
SA aids in the evaluation of alternative repair policies allowable within the constraints dictated by the maintenance concept.
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Objectives of SA
Initially influence the design of a given system Aid in the identification of the logistics and
maintenance support resources based on the assumed design configuration at the time
Aid in the initial establishment of supportability requirements during conceptual design
Aid in the early establishment of supportability design criteria
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Objectives of SA continued….
Aid in the process of synthesis, analysis, and design optimization through accomplishment of trade off studies and evaluation of various design alternatives
Aid in the evaluation of a given design configuration relative to the determining specific logistics and maintenance support resource requirements
Aid in the measurement and evaluation or assessment of an operating system
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SYSTEM REQUIREMENTS
EFFECTIVEMAINTENANCE AND
SUPPORTINFRASTRUCTURE
SUPPORTABILITYANALYSIS (SA)
Data requirementsand information
systems analysis
Personnel trainingrequirements
analysis
Systemoperational
requirementsanalysis
Reliability andmaintainability
predictions
Transportationand distribution
analysis
Facility/ UtilityAnalysis
Operator Taskanalysis
Level of repairanalysis
Text and supportequipmentanalysis
Spares/repairparts and
inventory analysis
Failure mode,effects and
criticality analysis
Maintenance taskanalysis
Life cycle costanalysis
Reliability-Centered
maintenanceanalysis
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CALS
Continuous Acquisition and Life cycle Support CALS pertains to the application of
computerized technology in the development and processing of data primarily in a digital format, with the objectives of reducing preparation and processing times,
eliminating redundancies, shortening the system acquisition process,
and reducing the overall program costs
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Objective to develop integrated system database
Serve as a repository for all logistics and related data evolving from the supportability analysis
Provide the necessary information at the right time and in the proper format in response to the reporting requirements for specific programs
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Summary
In order to provide logistics and maintenance support infrastructure that can effectively and efficiently support the applicable system throughout the life cycle,
The functions and activities related to supportability should be addressed from a total integrated overall systems perspective
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Summary continued…..
The logistics and maintenance infrastructure be considered as a significant element of the system in question
The infrastructure be addressed with the system engineering design process from the conceptual design phase.