Supportability & Serviceability1 After the Sale Design for Supportability (Serviceability)

Supportability & Serviceability 1

After the Sale

Design for Supportability (Serviceability)


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


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.


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.


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.


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.


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


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.



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.



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.


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.


Transportation Measures

Factors for evaluating the effectiveness of transportation are

Transportation routes Transportation capacity or capability Transportation time Transportation cost


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


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.


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.


Warehousing and Distribution Measure

The basic functions of warehousing are Movement Storage Information transfer


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.


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.


Types of Warehouses

Private & Public warehouses General merchandise warehouses Commodity warehouses Bulk-storage warehouses Bonded warehouses Temperature-controlled warehouses Houshold goods warehouses


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


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


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


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


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


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


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


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


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


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


Fig. 15.10


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


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.


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


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


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


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


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


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


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.

Supportability & Serviceability1 After the Sale Design for Supportability (Serviceability)

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