Reliability Maintainability Safety and Logistics Engineering Standards
Reliability Maintainability Safety and Logistics Engineering Standards

 
 
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Which Standard? There are many standards and handbooks used in the reliability, maintainability, safety and logistics engineering world. There are standards developed by the Department of Defense (DoD), the British Ministry of Defence, the Society of Automobile Engineers (SAE), NASA and other European Industries and Associations, to name but a few.
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These standards can be adopted freely by an organization and integrated into and as part of their day-to-day system engineering Standard Operating Procedures and Policies, or a procurement authority may force them upon them. A supplier who want to supply a procurement authority, such as a government agency, commercial operator/ authority or a prime contractor with their product, may need to have a thorough and complete understanding of many of these standards. The following list captures a sample of some of the more widely recognized and used standards in industry, accompanied by a very brief description.


MlL-STD-785: Reliability Program for Systems and Equipment, Development and Production

This standard details general requirements and specific tasks for reliability programs. It is used for reliability program planning and includes task descriptions for basic application requirements including sections on program surveillance and control, for several life cycle phases of a product. The life cycle phases include design, evaluation, development and production testing. There are three distinct task groupings, 100, 200 and 300 series. The 100 series addresses the program surveillance and control, the 200 series addresses the design and evaluation tasks, whereas the 300 series addresses the development and production testing (reliability). This is a reliability program management document, which references to the subordinate detailed what-to-do standards.


EN 50126: Railways Applications - The Specification and Demonstration of Reliability, Availability, Maintainability and Safety (RAMS)

This European Standard as its name implies is used by the railway industry, and has been adopted by many leading railway manufacturing and support companies. This specification considers all life cycle phases of a product, and is brokendown into 14 distinct phases. The First Phase starts with Concept of a program/ product and follows the intermediary phases through to the final phase (14) addressing decommissioning and disposal. This standard details which organization is responsible for the various RAMS tasks and activities within each phase, such as the operating authority, main contractor, sub-contractors or even suppliers. This is a RAMS program management document.


MIL-STD-470B Maintainability Program Requirements for Systems and Equipment

This standard details the general requirements for maintainability programs. The tasks detailed within can be tailored to address the needs, requirements and objectives for a given program and/ or project, at the optimum phase in its life cycle. There are three distinct task groupings, 100, 200 and 300 series. The 100 series addresses the program surveillance and control, the 200 series addresses the design and evaluation tasks, whereas the 300 series addresses the evaluation and test (maintainability). The topics detailed in these series are analyses and modeling, such as allocations, predictions, failure mode and effects analysis, and maintainability design criteria This is a maintainability program management document, which also refers to other engineering disciplines such as Safety, Human Factors and Logistics Support Analysis.


MIL-STD-882C System Safety Program Requirements

This standard provides requirements for developing and implementing a system safety program to identify the hazards of a system over its entire life cycle. A main objective is ensure that hazards and mishaps are removed (or the risk thereof is reduced) from the inherent characteristics of a system by imposing design requirements and management controls. This is a safety program management document and the tasks detailed within, include system safety program plan and preliminary hazard analysis.


MIL-STD-1388-1A Logistics Support Analysis

This standard details Logistic Support Analysis (LSA) guidelines and requirements for a program. There are five distinct task groupings, 100, 200, 300, 400 and 500 series. The 100 series addresses the program planning and control, the 200 series addresses mission and support system definition, the 300 series addresses preparation and evaluation of alternatives, 400 series determines the logistics support requirements and the 500 series address the supportability assessment. This standard makes reference to the Logistics Support Analysis Record (LSAR) database, MIL-STD-1388/2B (formally 2A). This is a LSA program management document. DEF STD 0060 PART 1is the equivalent British Ministry of Defence, for the LSAR.


MIL-STD-1472D Human Engineering Design Criteria for Military Systems, Equipment and Facilities

This standard presents human engineering principles, detailed design criteria, and practices to integrate humans (their requirements, including ergonomics) into systems and facilities. There are 15 sub-sections detailing various human factor attributes, ranging from controls and displays, workshop layout, environment to safety considerations. Section 5.9 details criteria, which should be taken into consideration for the maintainer, such as ergonomics, associated with handling and accessibility. This document contains extensive figures and tables on human parameters.


IEC 300: Dependability Management

These are a series of International Standards (Norme Internationale) detailing the processes and requirements for implementing Dependability Management/ Gestion de la sûreté de fonctionnement. These (IEC/ CEI) standards are published bilingual, in English and French. This particular standard (300), is broken into sub parts and in the case of 300-3, this is future divided into sections, where each section is a stand-alone document. Part 1 (300-1) addresses Dependability Program Management, Part 2 (300-2) details Dependability Program Elements and Tasks and Part 3 (300-3) details Dependability Management Application Guides.


SAE JA1011: Evaluation Criteria for Reliability Centered Maintenance (RCM) Processes

This is an SAE Standard, detailing a specific criteria for implementing a RCM process, with the focus being applied on the failure mechanisms of an component and where applicable what scheduled maintenance tasks should be implemented. The criteria which must be addressed within this standard, follows very much that of the criteria of a Failure Modes and Effects Analysis (ref to MIL-STD-1629). This standard requires that quantitative issues be taken into considerations such as probability of failure occurrences and the cost associated with the implementation of any scheduled maintenance tasks. The criteria within this SAE standard is partially based upon the RCM processes and concepts from MIL-STD-2173 - RCM requirements for Navel Aircraft, Weapon Systems and Support Equipment.

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