Ett produktionssystem under förändring : ergonomisk och teknisk utvärdering

An evaluation of the impact of partial automation strategies on productivity and ergonomics at an electronics company was performed. This change included adoption of a serial line flow from a parallel batch flow strategy. The change process, which used both a project head group and a work organisation group, was also studied. The partial automation of assembly operations reduced the total repetitive assembly work at the system level and increased productivity. At the remaining assembly stations however, the repetitive assembly work increased due to the automation of the transportation functions and increased work-pace. The operators found the mental work load was higher in the new system. They also experienced the manual assembly station in the beginning of the line as the worst job in the system . Lack of management continuity at the department was identified as one of the largest process problems. The manager set his view on how the production and work environment goals should be met. Thus the manager set the work organisation without adopting the plan of work rotation that the work organisation group had presented. This contributed to dissatisfaction amongst the operators involved in the development process.

[1]  L. Cronbach Essentials of psychological testing , 1960 .

[2]  Tomas Engström,et al.  Data collection and analysis of manual work using video recording and personal computer techniques , 1997 .

[3]  M Forsman,et al.  Identification and analysis of unsatisfactory psychosocial work situations: a participatory approach employing video-computer interaction. , 2001, Applied ergonomics.

[4]  P. Buckle,et al.  The State of Scientific Knowledge Regarding Work Related Neck and Upper Limb Musculoskeletal Disorders , 2000 .

[5]  John R. Wilson Participation-A framework and a foundation for ergonomics? , 1991 .

[6]  R. Westgaard,et al.  Electromyographic evaluation of muscular work pattern as a predictor of trapezius myalgia. , 1993, Scandinavian journal of work, environment & health.

[7]  Anders Kjellberg,et al.  Subjektiv stress och dess samband med psykosociala arbetsförhållanden och hälsobesvär : En prövning av Stress-Energi-modellen , 2002 .

[8]  Montakarn Chaikumarn Variability in activities and postures during electronic assembly work assessed by video-based analysis system : a preliminary study , 2001 .

[9]  Robert W. Norman,et al.  Trunk posture:: reliability, accuracy, and risk estimates for low back pain from a video based assessment method , 2001 .

[10]  R Kadefors,et al.  A Swedish industrial research program 'Co-operative for Optimization of Industrial Production Systems Regarding Productivity and Ergonomics' (COPE). , 1999, American journal of industrial medicine.

[11]  B. Jonsson,et al.  Standardised Nordic questionnaires for the analysis of musculoskeletal symptoms. , 1987, Applied ergonomics.

[12]  C. E. Dickinson,et al.  Questionnaire development: an examination of the Nordic Musculoskeletal questionnaire. , 1992, Applied ergonomics.

[13]  Nils Fallentin,et al.  Criteria for classification of posture in repetitive work by observation methods: A review , 1997 .

[14]  Robert Karasek,et al.  Healthy Work : Stress, Productivity, and the Reconstruction of Working Life , 1990 .

[15]  Daniel W. Stoy,et al.  Force and Repetition Measurement of Ham Boning: Relationship to Musculoskeletal Symptoms , 1999, AAOHN journal : official journal of the American Association of Occupational Health Nurses.

[16]  Tomas Engström,et al.  Empirical Evaluation of the Reformed Assembly Work at the Volvo Uddevalla Plant. Psychosocial effects and performance aspects , 1995 .

[17]  Jan Å. Johansson,et al.  Psychosocial and physical working conditions and associated musculoskeletal symptoms among operators in five plants using Arc welding in robot stations , 1994 .

[18]  Göran M Hägg,et al.  The impact on musculoskeletal disorders of changing physical and psychosocial work environment conditions in the automobile industry , 2001 .

[19]  J Malchaire,et al.  Review of the factors associated with musculoskeletal problems in epidemiological studies , 2001, International archives of occupational and environmental health.

[20]  Svend Erik Mathiassen Ergonomics in the continuous development of production systems A COPE-workshop on methods for collecting and analyzing mechanical exposure data , 2000 .

[21]  Kaj Bo Veiersted,et al.  Sustained muscle tension as a risk factor for trapezius myalgia , 1994 .

[22]  K. Lewin Field theory in social science , 1951 .

[23]  Hulda Ólafsdóttir,et al.  Increase in musculoskeletal symptoms of upper limbs among women after introduction of the flow-line in fish-fillet plants , 1998 .

[24]  Roland Kadefors,et al.  Ergonomic evaluation of complex work: a participative approach employing video–computer interaction, exemplified in a study of order picking , 2000 .

[25]  Robert Karasek,et al.  Job decision latitude and mental strain: Implications for job redesign , 1979 .

[26]  Svend Erik Mathiassen,et al.  A case study evaluating the ergonomic and productivity impacts of partial automation strategies in the electronics industry , 2002 .

[27]  Tomas Engström,et al.  Musculoskeletal Symptoms, Ergonomic Aspects and Psychosocial Factors in Two Different Truck Assembly Concepts , 1993 .

[28]  J A Johansson,et al.  Risk indicators in the psychosocial and physical work environment for work-related neck, shoulder and low back symptoms: a study among blue- and white-collar workers in eight companies. , 1994, Scandinavian journal of rehabilitation medicine.

[29]  Shrawan Kumar,et al.  Effects of progressive levels of industrial automation on force and repetitive movements of the wrist , 2000 .

[30]  Don B. Chaffin,et al.  Working Postures and Movements: Tools for Evaluation and Engineering , 2005 .