Title : COST ASSESSMENT FOR ERGONOMIC RISK (CAFER)

Authors : Barsky I. Dutta SP.

Source : International Journal of Industrial Ergonomics. 20(4):307-315, 1997 Oct.

ISSN : 0169-8141

Keywords : Cost assessment. Injury risk factors. Fmea. Work standard. Iso 9000.

AbstractConsumer safety in the use of a product is always given the highest priority by product designers. However, little or no consideration, it seems, is afforded the production workers who must produce and assemble these products. Given the conservative bent of governments, industry will have less incentive to invest in equipment which will reduce the risk of work-related injuries, or to give maximum consideration to designing the products and processes in such a manner that the risk of worker injury is minimized. One possible approach to make industries more accountable in this regard, is to utilize ISO 9000 as a vehicle for incorporating FMEA-like analysis techniques for occupational health issues and to audit every customer/supplier to assure that actions are being taken to solve any problems which have been identified. The authors suggest some strategies for implementing and controlling this type of system. (C) 1997 Elsevier Science B.V.

Number of References : 12

Language : English

Reprint available from: Dutta SP UNIV WINDSOR DEPT IND & MFG SYST ENGN WINDSOR ON CANADA

Title : APPLICATIONS OF SOME RISK ASSESSMENT TECHNIQUES - FORMAL EXPERT JUDGEMENT AND ACCIDENT SEQUENCE PRECURSORS

Authors : Goossens LHJ. Cooke RM.

Source : Safety Science. 26(1-2):35-47, 1997 Jun-Jul.

ISSN : 0925-7535

Risk assessments are carried out as a support for decision making on major hazards activities. The risk assessments are explanatory in nature and are not aiming at predictions of accidents which might occur. Tn various areas a lot of experience has been gained with risk assessments, for which well known techniques (like FMEA, fault trees and so forth) are applied. In quantifying risks, the prior position is often a scarce amount of necessary data on component failures or specific phenomena. The decision to pick the 'right' numbers is therefore Limited. There is felt a need to collect data with other techniques as well. The paper describes two such techniques: (i) a formal expert judgement technique to establish quantitative subjective expert assessments on design and model parameters, and (ii) a system failure analysis technique (Accident Sequence Precursor Methodology) which uses operational evidence of system failures to derive the system failure probability of the system as a whole. For both techniques an example case is presented for illustration. (C) 1997 Elsevier Science Ltd.

Number of References : 17

Language : English

Reprint available from: Goossens LHJ DELFT UNIV TECHNOL DELFT NETHERLANDS

Title : ENVIRONMENTAL IMPACT ANALYSIS FOR THE MAIN ACCIDENTAL SEQUENCES OF IGNITOR

Authors : Carpignano A. Francabandiera S. Vella R. Zucchetti M.

Source : Fusion Technology. 30(3 Part 2B):1490-1494, 1996 Dec.

ISSN : 0748-1896

A safety analysis study has been applied to the Ignitor machine using Probabilistic Safety assessment. The main initiating events have been identified, and accident sequences have been studied by means of traditional methods such as Failure Mode and Effect Analysis (FMEA), Fault Trees (FT) and Event Trees (ET). The consequences of the radioactive environmental releases have been assessed in terms of Effective Dose Equivalent (EDEs) to the Most Exposed individuals (MEI) of the chosen site, by means of a population dose code. Results point out the low enviromental impact of the machine.

Number of References : 12

Language : English

Reprint available from: Carpignano A POLITECN TURIN DIPARTIMENTO ENERGET I-10129 TURIN ITALY

Title : DESIGN SAFETY ANALYSIS OF HELICOPTER ROTOR AND TRANSMISSION SYSTEMS

Authors : Astridge DG.

Source : Proceedings of the Institution of Mechanical Engineers. Part G, Journal of Aerospace Engineering. 210(G4):345-355, 1996.

ISSN : 0954-4100

Keywords : Rotorcraft airworthiness. Rotor systems. Transmission systems. Design safety analysis. Failure data. Fmeca.

Design safety analysis (DSA) is an element of the certification process having the objective of determining whether the design can satisfy the required safety objectives. Analysis methods traditionally applied to aeroplane control systems include numerical procedures that are based upon the standard rules of probability theory. In this paper it is shown from a detailed examination of accident data that helicopter rotor and transmission systems do not confirm to this theory in respect of catastrophic failures. Practical solutions are offered for this problem, and for that posed by the lack of meaningful component failure data. Details are also given of procedures tailored to produce effective analysis of such systems, and for the structuring of failure modes, effects, and criticality analysis (FMECA) to improve their space efficiency by several orders of magnitude.

Number of References : 19

Language : English

Reprint available from: Astridge DG DEREK ASTRIDGE & ASSOCIATES LANGPORT SOMERSET ENGLAND