Creating and Sustaining a Maintenance Strategy: A Practical Guide

Manufacturing companies should create maintenance strategy and link it to the manufacturing and business goals but recent research in the North East of England suggested that few companies do this. It is unclear why this inertia existed but it could have been due to the complexity and variety of the advice on offer in relation to the formulation and implementation of strategy. The purpose of this paper was to provide a simple generic guide or roadmap for practitioners to follow. It began by highlighting the importance and benefits of a maintenance strategy and then considered literature appropriate to the topic. A key point arising from this review was that the three elements; process, content, context, need to be considered over the lifecycle of a strategy. Moreover, most strategic models converged to simple sequential models affording a generic functional process to be developed. This involved the integration of the “corporate hard systems” model and the “Plan, do, check, act, cycle“, forming a suitable maintenance strategy process. Accordingly, further guidance on policy assured the right “content”. The paper concluded with a short questionnaire used to audit the effect of “contextual factors” on maintenance strategy. The result was a comprehensive guide on how to formulate and implement maintenance strategy

Measuring the alignment of Maintenance and Manufacturing Strategies – The development of a new model and diagnostic tool

Purpose - To outline the development of a new conceptual model and diagnostic tool which assesses the strategic processes and links involved between maintenance and manufacturing strategies and the effect on manufacturing performance. Methodology - The new model was developed in two stages. Firstly a conceptual framework was produced and then a holistic diagram. From this theoretical model a diagnostic tool was generated. This tool was then verified and tested during an empirical research phase which produced four extensive and detailed case studies. A brief overview of one of the case studies is provided in this article. Findings - It was found that the conceptual model provided an accurate representation of the strategic processes and links which should exist in a manufacturing plant. Moreover the diagnostic tool proved to be a valid and reliable test instrument to measure and display this information. Practical implications - The diagnostic tool provides a snapshot of the status of manufacturing and maintenance strategies which then can be used to benchmark improvements over time. If required the individual questions from the questionnaire can be “reverse engineered” to provide detailed information for senior managers to carry out corrective action. Originality/value – This theoretical and empirical research closes a gap in the literature relating to the linkage between maintenance and manufacturing strategies. It does so by providing a unique and holistic model showing the strategic processes and links which should exist within a manufacturing plant. Moreover the diagnostic tool produced from the model is a convenient audit facility which enables companies to move toward functional coherence

Towards a Simpler Selection Process for Maintenance Strategies

Recent research at four large manufacturing sites in the North East of England showed that maintenance organisations were failing because they were locked in a cycle of quick fix and mend despite deploying extensive planned maintenance policies. Consequently they were unable to plan and formulate strategies because they did not have the time. Simple and quick tools were needed to select the best maintenance approach for the machines and the plant. Two possible selection tools were developed. Firstly a truth table was produced based on the key characteristics of each maintenance approach and these mapped against simplified failure mode combinations. This offered a quick and easy selection method for machines, based on failure mode patterns. Secondly, the macro level was addressed using a conceptual model employing a 2x2 matrix. This consisted of two axes, the level of machine failures and the level of improvement activity. The resulting framework was used to predict how maintenance organisations would progress from a state of reactive maintenance towards world class. Then informed by the truth table it was possible to select an appropriate maintenance approach which was most suitable for each stage. It is suggested that these two methods offer simple and quick approaches to guide vital maintenance decision making at plants in difficulty. This of course does not preclude the need to develop maintenance strategies but rather facilitates this process by freeing up time and resources

Howard Hill, Speaker-Teacher

Biography on Dr. Howard T. Hill from the Department of Speech at Kansas State College

Robustness: a New Form of Heredity Motivated by Dynamic Networks

We investigate a special case of hereditary property in graphs, referred to as {\em robustness}. A property (or structure) is called robust in a graph $G$ if it is inherited by all the connected spanning subgraphs of $G$. We motivate this definition using two different settings of dynamic networks. The first corresponds to networks of low dynamicity, where some links may be permanently removed so long as the network remains connected. The second corresponds to highly-dynamic networks, where communication links appear and disappear arbitrarily often, subject only to the requirement that the entities are temporally connected in a recurrent fashion ({\it i.e.} they can always reach each other through temporal paths). Each context induces a different interpretation of the notion of robustness. We start by motivating the definition and discussing the two interpretations, after what we consider the notion independently from its interpretation, taking as our focus the robustness of {\em maximal independent sets} (MIS). A graph may or may not admit a robust MIS. We characterize the set of graphs \forallMIS in which {\em all} MISs are robust. Then, we turn our attention to the graphs that {\em admit} a robust MIS (\existsMIS). This class has a more complex structure; we give a partial characterization in terms of elementary graph properties, then a complete characterization by means of a (polynomial time) decision algorithm that accepts if and only if a robust MIS exists. This algorithm can be adapted to construct such a solution if one exists

Look Into My Eyes

Freddie Yauner, a lecturer in Design for Industry, believes that design can engage, inform and make complex concepts accessible. Through thought provoking projects and installations which have exhibited in New York, Paris and London, Freddie uses critical design to challenge convention and encourage debate. Utilising this approach, Freddie, teamed up with typographer and graphic designer Paul Robson, also from our school and Cathy John, a freelance writer to create their unique publication - Look into my Eyes. Through combined expertise Look into my Eyes was created, a book that explores the labyrinth of decisions facing MS patients from day one of their diagnosis and examines the impact each of these decisions could have on their day to day lives. Look into my Eyes was created as part of a wider programme of initiatives that use real life experiences and interaction design to place audiences firmly in the shoes of an MSer, with the aim of increasing understanding and acceptance of MS for patients, carers and health professionals alike

Assessment of the microbial communities associated with white syndrome and brown jelly syndrome in aquarium corals

Bacterial and ciliate assemblages associated with aquarium corals displaying white syndrome (WS) and brown jelly syndrome (BJS) were investigated. Healthy (n = 10) and diseased corals (WS n = 18; BJS n = 3) were analysed for 16S rRNA gene bacterial diversity, total bacterial abundance and vibrio-specific 16S rRNA gene abundance. This was conducted alongside analysis of 18S rRNA gene sequenc-ing targeting ciliates, a group of organisms largely overlooked for their potential as causal agents of coral disease. Despite significant differences between healthy and diseased corals in their 16S rRNA gene bacterial diversity, total bacterial abundance and vibrio-specific rRNA gene abundance, no domi-nant bacterial ribotypes were found consistently within the diseased samples. In contrast, one ciliate morphotype, named Morph 3 in this study (GenBank Accession Numbers JF831358 for the ciliate isolated from WS and JF831359 for the ciliate isolated from BJS) was observed to burrow into and underneath the coral tissues at the disease lesion in both disease types and contained algal endosym-bionts indicative of coral tissue ingestion. This ciliate was observed in larger numbers in BJS compared to WS, giving rise to the characteristic jelly like substance in BJS. Morph 3 varied by only 1 bp over 549 bp from the recently described Morph 1 ciliate (GenBank Accession No. JN626268), which has been shown to be present in field samples of WS and Brown Band Disease (BrB) in the Indo-Pacific. This result indicates a close relationship between these aquarium diseases and those observed in the wild