WG 3 - TC 56/WG 3

This guide has for purpose to provide guidance for the early consideration of testability aspects in design and development, and to assist in determining effective test procedures as an integral part of operation and maintenance. This second edition constitutes a technical revision. It expands and provides more detail on the techniques and systems broadly outlined in the first edition.

Describes a framework for maintenance and maintenance support and the various minimal common practices that should be undertaken.Outlines in a generic manner, management, processes and techniques related to maintenance and maintenance support that are necessary to achieve adequate dependability to meet the operational needs of the customer. Applicable to items, which include all types of products, equipment and systems (hardware and associated software). Most of these require a certain level of maintenance to ensure that their required functionality, dependability, capability, economic, safety and regulatory requirements are achieved.

The application guide can be used to implement a maintainability programme covering the initiation, development and in-service phases of a product, which form part of the tasks in IEC 60300-2. It provides guidance on how the maintenance aspects of the tasks should be considered in order to achieve optimum maintainability. It uses other IEC standards, notably IEC 60706, as reference documents or tools as to how a task should be undertaken. This standard replaces Sections 1 and 3 of IEC 60706-1 (1982).

Applies to direct current (d.c.) powered mobile equipment. The equipment is operated while being transported, for example in or on a vehicle but does not form part of the vehicle, and is not designed to be installed permanently in a vehicle. The equipment experiences general open-air climates according to IEC 60721-2-1. The degree of simulation of this test cycle is low. The contents of the corrigendum of March 1996 have been included in this copy.

This PAS describes the process on human factors (HF) influencing system dependability design and provides HF methods and practices applicable to system life-cycle implementation to achieve dependability performance.

Serves as an application guide to a reliability stress screening process for electronic hardware. The concept, purpose and justification of the screening process are explained. The standard is intended as a guide to be used with one of the IEC reliability stress screening standards. It gives guidance in cases where it is essential that early failures be removed from the items manufactured in order to deliver them to the customer when the problems causing the early failures are solved. It gives guidance on where the reliability stress screening should be carried out, i.e. component, subsystem or system level.