Search results

1 – 10 of 17
To view the access options for this content please click here
Article

Marcello Braglia, Roberto Gabbrielli and Leonardo Marrazzini

The purpose of this paper is to propose a new Lean metric named Overall Task Effectiveness (OTE), which can help analyst to define target task times and to identify the…

Abstract

Purpose

The purpose of this paper is to propose a new Lean metric named Overall Task Effectiveness (OTE), which can help analyst to define target task times and to identify the hidden losses that account for most of the recorded time of manual assembly activities.

Design/methodology/approach

An alternative classification structure of the losses is developed to divide them in two classes. In the first one the losses that are external to the project order are included, and in the other one those due to inefficiencies directly ascribable to the project order are considered. Starting from this classification structure of the losses, a novel Lean metric, inspired from the well-known Overall Equipment Effectiveness (OEE), is developed to evaluate the effectiveness of a manual assembly task. A case study, which briefly explains the methodology and illustrates the capability of the corresponding metric, is provided.

Findings

This tool can be considered a suitable method to achieve simultaneously a dual purpose to establish time standards and to identify the hidden losses that account for most of the recorded time of manual assembly activities, estimating the impacts of potential corrective actions in terms of both efficiency and effectiveness.

Practical implications

OTE provides practitioners with an operative tool useful to highlight the points where the major inefficiencies take place in industries producing large complex items via manual assembly lines. Its practical application is demonstrated using a case study concerning a manufacturer of train wagons.

Originality/value

One distinctive, and contemporarily appealing, feature of OTE with respect to other analogous KPIs is that it provides a breakdown structure for process losses that simplifies the task of evaluating the current performances and, at the same time, individuates both the source of losses and the corresponding corrective actions.

Details

International Journal of Productivity and Performance Management, vol. 68 no. 2
Type: Research Article
ISSN: 1741-0401

Keywords

To view the access options for this content please click here
Article

Marcello Braglia, Leonardo Marrazzini, Luca Padellini and Rinaldo Rinaldi

The purpose of this paper is to present a structured framework whose objectives are to identify, analyse and eliminate fashion-luxury supply chains inefficiencies.

Abstract

Purpose

The purpose of this paper is to present a structured framework whose objectives are to identify, analyse and eliminate fashion-luxury supply chains inefficiencies.

Design/methodology/approach

A Lean Manufacturing tool, the 5-Whys Analysis, has been used to find out the root causes associated with the problem identified from a data analysis of production orders of a fashion-luxury company. A case study, which explains the methodology and illustrates the capability of the tool, is provided.

Findings

This tool can be considered a suitable instrument to identify the causal factors of inefficiencies within luxury supply chains, suggesting potential countermeasures able to eliminate the problems previously highlighted. In addition, enabling technologies that deal with Industry 4.0 are associated with the root causes to enable further improvement of the supply chain.

Practical implications

The effectiveness and practicality of the tool are illustrated using an industrial case study concerning an international Italian signature in the world of fashion-luxury footwear sector.

Originality/value

This framework provides practitioners with an operative tool useful to highlight where the major inefficiencies of fashion-luxury supply chains take place and, at the same time, individuates both the root causes of inefficiencies and the corresponding corrective actions, even considering Industry 4.0 enabling technologies.

Details

Journal of Fashion Marketing and Management: An International Journal, vol. 25 no. 1
Type: Research Article
ISSN: 1361-2026

Keywords

To view the access options for this content please click here
Article

Marcello Braglia, Davide Castellano, Marco Frosolini, Mosè Gallo and Leonardo Marrazzini

The paper proposes a new workforce effectiveness metric that is a sophisticated evolution of a pre-existing overall labour effectiveness (OLE) indicator. The KPI, named…

Abstract

Purpose

The paper proposes a new workforce effectiveness metric that is a sophisticated evolution of a pre-existing overall labour effectiveness (OLE) indicator. The KPI, named revised OLE (ROLE), provides a structured methodology to measure in a holistic way the losses relating to labour, maintaining some formal similitude to the overall equipment effectiveness (OEE)

Design/methodology/approach

A new structure of losses is proposed to overcome the drawbacks and the difficulties that usually affect the data collection stage, referring to directly measurable quantities or, when this is not the case, suggesting a viable method to quantify the loss. Besides, this approach facilitates the comprehension of labour-related issues, suggesting potential countermeasures. The novel ROLE indicator has been defined, based on this new structure, to evaluate the labour effectiveness in batch process industries. A real case study is provided, which explains the methodology and illustrates the capability of the corresponding KPI.

Findings

The present work analyses the labour performance indexes available in literature, with the aim of evidencing those aspects that can be properly observed and quantified and, at the same time, categorizing them to identify their possible drawbacks. A new structure of losses is derived, with respect to four different categories, which may help to measure the losses themselves more effectively

Originality/value

The paper investigates some important KPIs dealing with labour performance and individuates some significant drawbacks. Then it suggests a new, inclusive structure of losses and a modified KPI that not only measures effectiveness but also allows to identify viable countermeasures.

Details

International Journal of Productivity and Performance Management, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1741-0401

Keywords

To view the access options for this content please click here
Article

Marcello Braglia, Davide Castellano and Mosè Gallo

The purpose of this paper is to present a new operational approach to equipment maintenance designed to exploit the complementary nature of total productive maintenance…

Abstract

Purpose

The purpose of this paper is to present a new operational approach to equipment maintenance designed to exploit the complementary nature of total productive maintenance (TPM) and reliability-centered maintenance (RCM).

Design/methodology/approach

This paper focuses on the operational aspect of the maintenance practice, proposing an equipment maintenance methodology that can be suitably adopted to define a new maintenance plan or check and improve an existing one. It integrates principles and methods of TPM and RCM and uses different tools to support decision-makers and operators. It proposes several worksheets which facilitate planning and implementing maintenance activities, that range from autonomous maintenance tasks to maintainability improvement actions.

Findings

This paper exploits the complementary nature of TPM and RCM to design or improve maintenance plans for a generic system. The tools and worksheets presented can be helpful to practitioners and operators.

Originality/value

While the integration of TPM and RCM is evidently a central issue in the maintenance management context, it has received limited attention in literature. To the best of the authors’ knowledge, it lacks a structured practical equipment maintenance methodology that exploits the complementary nature of TPM and RCM. Therefore, the approach presented in this paper would fill the current gap.

Details

Journal of Quality in Maintenance Engineering, vol. 25 no. 4
Type: Research Article
ISSN: 1355-2511

Keywords

To view the access options for this content please click here
Article

Marcello Braglia and Alberto Petroni

This paper present the results of a study of material requirements planning (MRP) implementation in the packaging machinery‐building industry. The research, in particular…

Abstract

This paper present the results of a study of material requirements planning (MRP) implementation in the packaging machinery‐building industry. The research, in particular, has addressed such issues as management and employee responses and the actual versus expected financial and production/logistics benefits. Some of the findings are that, generally, benefits of MRP packages include higher productivity and product quality, that attitudes towards the installations before installation were positive, that the majority of larger companies would purchase more advanced and integrated systems (MRP II and ERPs) in the future and that supplier involvement and project planning (this latter for larger firms) were important components of the effective management of MRP packages introduction.

Details

Logistics Information Management, vol. 12 no. 6
Type: Research Article
ISSN: 0957-6053

Keywords

To view the access options for this content please click here
Article

Marcello Braglia, Marco Frosolini and Roberto Montanari

This paper presents a tool for reliability and failure mode analysis based on an advanced version of the popular failure mode, effects and criticality analysis (FMECA…

Abstract

This paper presents a tool for reliability and failure mode analysis based on an advanced version of the popular failure mode, effects and criticality analysis (FMECA) procedure. To help the analyst formulating efficiently effective criticality assessments of the possible causes of failure, the fuzzy logic technique is adopted. Particular attention has been devoted to support the maintenance staff with a fuzzy criticality assessment model easy to implement and design. To test the proposed methodology, an actual application concerning a process plant in milling field for human consumption flour is showed in the paper.

Details

International Journal of Quality & Reliability Management, vol. 20 no. 4
Type: Research Article
ISSN: 0265-671X

Keywords

To view the access options for this content please click here
Article

Massimo Bertolini, Maurizio Bevilacqua, Marcello Braglia and Marco Frosolini

In this paper an experience dealing with the analysis of maintenance outsourcing by means of multi‐criteria decision methods (MCDM) is reported. In particular, the…

Abstract

In this paper an experience dealing with the analysis of maintenance outsourcing by means of multi‐criteria decision methods (MCDM) is reported. In particular, the analytic hierarchy process technique (AHP) is used as a managerial decision support system to select the best alternative between different outsourcing contracts in terms of maintenance services. The proposed methodology has been tested on an industrial case study dealing with an important italian brickwork. This application shows how the AHP is able to support the choice of the correct level of the maintenance activities outsourcing. In particular, the hierarchic decisional structure developed represents an instrument able to give a well balanced synthesis of several different factors that must be taken into account during this type of decision problem.

Details

International Journal of Quality & Reliability Management, vol. 21 no. 7
Type: Research Article
ISSN: 0265-671X

Keywords

To view the access options for this content please click here
Article

Francesco Zammori, Marcello Braglia and Marco Frosolini

The purpose of this paper is to define the standard structure of a vendor managed inventory (VMI) agreement, which can be used as a guideline for the early definition of…

Abstract

Purpose

The purpose of this paper is to define the standard structure of a vendor managed inventory (VMI) agreement, which can be used as a guideline for the early definition of the agreement.

Design/methodology/approach

Starting from an industrial application of relevance, the information flow and the technical details, which are to be defined before the operation startup, are identified and discussed. These data are used as the key points for the definition of the basic frame of the agreement. A particular emphasis is given to the “Technical Specification” and the “Service Level Agreement” sections.

Findings

It is shown that a VMI agreement should be arranged into parts dealing with the generic and legal sides of the agreement, whereas the technical aspects and the relation‐specific topics should be addressed in the annexes. This increases the flexibility of the agreement in that, as the VMI relationship evolves over time, changes will affect only the annexes leaving the main body of the agreement unaltered.

Practical implications

The proposed agreement has a flexible structure and can be easily adopted by the personnel involved to correctly define and implement VMI in several industrial fields.

Originality/value

By approaching VMI from a practical point of view, this paper identifies the main issues that must be covered in the agreement to fit the needs of both parties and to assure benefits on both sides.

Details

Strategic Outsourcing: An International Journal, vol. 2 no. 2
Type: Research Article
ISSN: 1753-8297

Keywords

To view the access options for this content please click here
Article

Marcello Braglia, Gionata Carmignani, Marco Frosolini and Andrea Grassi

To provide a structured methodology to permit an optimal selection of the best suited Computer Managed Maintenance System (CMMS) software within process industries.

Abstract

Purpose

To provide a structured methodology to permit an optimal selection of the best suited Computer Managed Maintenance System (CMMS) software within process industries.

Design/methodology/approach

The analysis has been executed adopting a multi‐attribute decision making methodology, namely the analytic hierarchic process (AHP) technique. A specific hierarchic structure has been defined considering 46 criteria outlined via questionnaires and interviews with administration, production and maintenance managers of several industries. To improve the effectiveness of the methodology, AHP has been coupled with a sound sensitivity analysis.

Findings

The application of the proposed approach allows the maintenance practitioners to concentrate on a limited subset of CMMS applications and to compare their actual capabilities in order to select the right one, rather than considering only their purchase cost.

Practical implications

The methodology enables decision makers to restrict the selection process to a limited number of software programmes that better suit the actual requirements of the corporation's personnel and to help the managers involved in the choice to better understand what each software can offer to them to effectively help the management of maintenance‐related activities. Finally, the choice is driven by objective considerations rather than by subjective opinions, and the purchase and the following implementation of the CMMS can be better justified to the corporation top‐level management

Originality/value

The paper proposes a robust approach, structured and useful in practice, for the selection of a CMMS software, that takes into account multiple, often conflicting, criteria and overcomes the intrinsic limitations of subjective decisions

Details

Journal of Manufacturing Technology Management, vol. 17 no. 5
Type: Research Article
ISSN: 1741-038X

Keywords

To view the access options for this content please click here
Article

Marcello Braglia, Davide Castellano and Marco Frosolini

The purpose of this paper is to present a reliability centered maintenance (RCM) embedded integer linear programming approach (suited to the budget monetary resources…

Abstract

Purpose

The purpose of this paper is to present a reliability centered maintenance (RCM) embedded integer linear programming approach (suited to the budget monetary resources allocation task) to the maintenance strategies mix selection for an industrial plant equipment.

Design/methodology/approach

The developed approach allows to determine the optimal maintenance strategies mix for a set of equipment in a more quantitative way than the classic RCM approach. The proposed model takes into account, for each potential failure determined using the FMECA and for each admissible strategy, the costs and the potential risk priority number (RPN) reduction. Finally, an industrial case concerning an Italian paper-mill plant is reported to demonstrate the effectiveness of the approach presented.

Findings

The paper finds that the application of the proposed approach allows to optimally allocate the budget monetary resources, determining which suitable maintenance practice apply to each failure, taking into account the costs of each strategy and the potential reduction of the RPN.

Practical implications

The proposed model permits to assign (during the budget monetary resources allocation task) to each failure the optimal strategy, among a set of suitable maintenance practices, considering the costs and the estimated RPN reduction.

Originality/value

The paper proposes a completely new RCM embedded approach to the maintenance strategies selection, in order to optimally allocate the budget monetary resources. This model overcomes the limits of the traditional RCM approach, taking into account quantitative aspects, i.e. the compatibility constraint between failures and policies, the maintenance strategies costs, and the RPN estimated reduction.

Details

International Journal of Quality & Reliability Management, vol. 30 no. 9
Type: Research Article
ISSN: 0265-671X

Keywords

1 – 10 of 17