Nova Integrated Systems Limited

New Product Development

System Integration

Quality

RAMS & ILS

RAMS

We offer the following services as part of Reliability, Availability, Maintainability and Safety assessment across the product's development life cycle - Concept, Design & Development, Prototype, Validation & Verification, Production and Audit.
1.    Reliability Goal Allocation
2.    Reliability Prediction
3.    Reliability Block Diagrams
4.    Failure Modes Effects and Criticality Analysis (FMECA)
5.    Fault Tree Analysis (FTA)
6.    Spare Analysis based on Poisson’s Distribution

 


1.    Reliability Goal Allocation: Reliability Allocation deals with the setting of reliability goals for individual subsystems such that the specified system reliability goals (generally R(t) or Probability of Failure or MTBF or MTBCF etc.) are met. Reliability allocations (for its subsystems) start with creation of system reliability model, which involveslisting all the subsystems and their inter-relationships in relation to the required goal.
2.    Reliability Prediction:In this analysis, the components or subsystems of the product are studied to predict the rate at which the system fails in field. These calculations assist in estimating and improving the system reliability,by identifying the weak points in the design i.e., the areas of potential reliability improvement. During initial phases of design, reliability predictions provide a rational fordesign and allocation decisions, also determine spares requirement.
3.    Reliability Block Diagramming:Reliability modeling establishes system reliability on a modular/block basis rather than a component basis using a block diagram approach, making the reliability of a system much easier to understand. Reliability Block Diagrams are especially used in complex systems as it exposesthe weaknesses of the system much quicker.
4.    Failure Modes Effects and Criticality Analysis (FMECA):This is an inductive, bottom-up method of analyzing the system effects of individual failure modes. This method is used to identify, prioritize, and eliminate all potential failures of the system in the early phases of development especially catastrophic and critical failures, so that they can be eliminated or minimized through design correction at the earliest possible time. In a FMECA (performed as per MIL-STD-1629), each failure mode of the product is identified, analyzed and then evaluated for criticality. This criticality is then translated into a risk, to be communicated to the customer.
5.    Fault Tree Analysis (FTA): This is a deductive reasoning failure analysis resolving an undesired state of a system into subsequent events till the basic events are identified. This method is majorly used to calculate the probability of safety accidents. Unlike FMECA, Fault trees analyze the risk associated with the hazards, considering multiple failures to occur at a time.
6.    Spare Analysis:With specific operational requirements under critical conditions on downtime and repair time, provision of spares plays a vital role in the defense programs.These systems are generally large and complex requiring significant number of spares. Depending on the identified levels of maintenance, knowing the kind of spares needed and the quantity to purchase is an essential element of maximizing capability whilst minimizing life cycle costs in any project.



ILS


Integrated logistics support (ILS) is an integrated approach to the management of logistic activities,  that plans and directs the identification and development of logistics’ support and corresponding system requirements, with the goal of creating systems that last longer and require less support, thereby reducing both inventory and operational costs for the program. ILS addresses these aspects of support throughout the operational life cycle of the system. The impact of ILS is often measured in terms of metrics such as reliability, availability, maintainability, safety (RAMS) and testability.
Initiating ILS activities during initial phases of development provides important means to quickly identify reliability issues and can initiate system or part design improvements based on reliability, maintainability, and safety analysis. Here we plan and execute different activities (and their analytical approach’s) related to various elements of ILS (listed below) for meeting the specific requirements of defence programs.
1.    Integrated Configuration List (ICL)
2.    Maintenance Engineering Analysis
3.    Maintenance Allocation Chart
4.    Spares
5.    Support and Test Equipment and their spares
6.    Special Equipment
7.    Documentation
a.    User Manuals (for Deployment & Operation)
b.    Technical Manual including Maintenance (for Maintenance)
c.    Packaging
8.    Training
9.    Crew Configuration and Deployment
10.  Repair & Overhaul Support