AAOM Handbook

SS.13 Specify Actions, Triggers and Trigger Tolerances

Context

A Service Strategy is a high level description of the types of action required to prevent, predict, mitigate and or correct a threat that is likely to occur.

There are six basic strategy options that may be applicable to manage a threat. These are; 1. Modification of the process – remove or reduce the threat and the need for service work. 2. Monitor process condition and/or performance to identify the best time and type of service action. 3. Initiate service actions based on a pre-defined interval or life. 4. Install back-up or containment systems to circumvent or mitigate the consequences of the threat. 5. Operate the process to the point of failure. 6. Closure of the process. Every strategy option will require at least one action to implement it. A condition monitoring strategy will require at least two actions for implementation. For example: The vibration level for a gearbox bearing may be monitored on a regular basis in order to predict the failure of the bearing – this action may occur many times over the life of the gearbox. When the vibration indicates an imminent failure of the bearing the bearing will be changed – this action may occur several times over the life of the gearbox. These actions are generally referred to as the primary and secondary actions of the Service Strategy. Once a set of Service Strategies have been selected for a process, the specific actions (e.g. measure vibration at point X), and triggers for these actions, need to be specified.

Purpose

To specify the actions and scheduling detail to implement the Service Strategy for a process.

Quantity

• One set of actions and scheduling specifications for each Service Strategy.

Quality

Each service action shall be described in the form of an action and an object (e.g. remove process spillage from under conveyor Z, replace engine oil, replace brake pads).

© McAlear Management Consultants 2006

Operational Planning: Set Service Strategy

Updated: August 2018

Page 63