Rising repair costs and the throwaway society

2021 ◽  
Vol 41 (2) ◽  
pp. 284-298
Author(s):  
John McCollough ◽  
Ailian Qiu
Keyword(s):  
Repair Costs

scholarly journals A decision model on the repair and maintenance of shipping containers

2020 ◽  
Vol 5 (1) ◽  
Author(s):  
Niclas Hoffmann ◽  
Robert Stahlbock ◽  
Stefan Voß
Keyword(s):  
Decision Model ◽  
Individual Decision ◽  
Microsoft Excel ◽  
Current State ◽  
Repair Costs ◽  
Transport Chain ◽  
Shipping Containers ◽  
Logistic Chain ◽  
Safe Transport ◽  
Near Future

Abstract The use of shipping containers for the transport of goods has become indispensable and a crucial factor for globalization by providing inexpensive and safe transport opportunities. It is expected that the number of globally operating containers will increase in the near future. Despite a high technical modernisation of the logistic chain, the container still faces a risk of damage at any time and any place within the transport chain. In principle, a container is taken out of service, when a damage is recognized. Different causes of damage exist and various types of damage could occur to the container, ranging from minor to substantial major ones that do not permit the continued proper use of the container. Thus, an individual decision on repair and maintenance (R&M) for each damaged container is necessary. Aside from technical aspects, it has to be decided from an economical perspective whether a repair should be performed. A profound decision should consider various criteria like, e.g., repair costs, lifespan of the container, future yields and possible sales price. Based on a regulatory, practical, and scientific view, this paper proposes a multi-criteria decision model for the economic decision on the R&M of a damaged container. Implemented in Microsoft Excel, this decision model is easily applicable. The user can deduce a first (limited) guidance for dealing with a respective damaged container based on its current state and general market conditions.

Cost-Benefit Analysis of Buildings Retrofitted Using GIB Systems

2016 ◽  
Vol 32 (2) ◽  
pp. 861-879 ◽  
Author(s):  
Hossein Agha Beigi ◽  
Constantin Christopoulos ◽  
Timothy J. Sullivan ◽  
Gian Michele Calvi
Keyword(s):  
Cost Benefit Analysis ◽  
Cost Benefit ◽  
Ground Level ◽  
Seismic Intensity ◽  
Benefit Analysis ◽  
Significant Cost ◽  
Soft Story ◽  
Masonry Infills ◽  
System A ◽  
Repair Costs

Recently, the gapped-inclined brace system (GIB) has been developed as an effective retrofitting solution for soft-story buildings. This paper presents a cost-benefit study of a building retrofitted using the GIB system. A six-story, reinforced concrete (RC) frame with an open story at the ground level and masonry infills on all other floors is studied. To investigate the effectiveness of alternate retrofit configurations, different scenarios of GIB systems are numerically analyzed, expected repair costs for various levels of seismic intensity are computed, and cost benefit values are compared to each other and to those obtained when the building is strengthened and stiffened at the ground floor using conventional methods. Results show that GIB retrofit solutions are likely to represent significant cost benefits compared to traditional retrofit solutions. The results also indicate that GIBs do not need to be positioned at all column locations of the soft story, which could be beneficial in reducing the overall retrofit cost and improving architectural functionality of the retrofitted structure.

Modelling Ozone Effects on Adult Beech Trees through Simulation of Defence, Damage, and Repair Costs: Implementation of the CASIROZ Ozone Model in the ANAFORE Forest Model

Plant Biology ◽  
2007 ◽  
Vol 9 (2) ◽  
pp. 320-330 ◽  
Author(s):  
G. Deckmyn ◽  
M. Op de Beeck ◽  
M. Löw ◽  
C. Then ◽  
H. Verbeeck ◽  
...  
Keyword(s):  
Forest Model ◽  
Repair Costs

A computational analysis on energy consumption of a Ryerson building

2021 ◽  
Author(s):  
Mohammad Adnan Naeem.
Keyword(s):  
Energy Consumption ◽  
Energy Management ◽  
Computational Analysis ◽  
Operating Costs ◽  
Indoor Temperature ◽  
Energy Assessment ◽  
Repair Costs ◽  
Building Load ◽  
High Level ◽  
Storey Building

This project analyses the energy consumption of 44 Gerrard St. East. This site is primarily used as the Ryerson University Theatre School and it consists of four classrooms, seventeen offices, six studios, and two theatre auditoriums. Since it is a three-storey building, plus a basement, thus, the energy level for this building is supposed to be moderate. However, because it is an old structure, constructed back in the early 1940s, this building seemingly has considerable energy consumption. The main objective of this energy assessment is to reduce the building load. This goal can be achieved by simplifying and controlling certain parameters that directly and indirectly involve energy consumption. For example, indoor temperature and relative humidity can be maintained at low level in winter and at high level in summer. In addition, monitoring heat loss, heat gain, infiltrations through the building surrounds, and the level of illumination for various types of lights helps to reduce overall energy consumption. Several other factors such as operating costs, maintenance costs, and repair costs influence the energy management of the site. With the help of energy management software, eQUEST, the structure, outlook of all the walls, windows, roof and the type of HVAC system can be developed for analysis. Through eQUEST, various tasks such as heat transfer involvement, energy consumption load calculations and load balancing in comparison with energy saving guidelines will be discussed in detail.

Simple Instrumentation Rake Designs for Gas Turbine Engine Testing

1996 ◽  
Author(s):  
Peter D. Smout ◽  
Steven C. Cook
Keyword(s):  
Gas Turbine ◽  
Mechanical Damage ◽  
Engine Performance ◽  
Leading Edge ◽  
Gas Turbine Engine ◽  
Calibration Data ◽  
Turbine Engine ◽  
Industry Standard ◽  
Repair Costs ◽  
Engine Testing

The determination of gas turbine engine performance relies heavily on intrusive rakes of pilot tubes and thermocouples for gas path pressure and temperature measurement. For over forty years, Kiel-shrouds mounted on the rake body leading edge have been used as the industry standard to de-sensitise the instrument to variations in flow incidence and velocity. This results in a complex rake design which is expensive to manufacture, susceptible to mechanical damage, and difficult to repair. This paper describes an exercise aimed at radically reducing rake manufacture and repair costs. A novel ’common cavity rake’ (CCR) design is presented where the pressure and/or temperature sensors are housed in a single slot let into the rake leading edge. Aerodynamic calibration data is included to show that the performance of the CCR design under uniform flow conditions and in an imposed total pressure gradient is equivalent to that of a conventional Kiel-shrouded rake.

Characterizing and Predicting Seismic Repair Costs for Bridges

2017 ◽  
Vol 22 (11) ◽  
pp. 04017083 ◽  
Author(s):  
Sabarethinam Kameshwar ◽  
Jamie E. Padgett
Keyword(s):  
Repair Costs ◽  
Seismic Repair

scholarly journals APPLICATION OF JET MIXERS FORPREPARATION OF RAW MATERIALS FOR PRIMARY PROCESSING PLANTS OIL REFINING

2021 ◽  
Vol 2 (68) ◽  
pp. 37-41
Author(s):  
A. Gumerov ◽  
G. Sidorov ◽  
R. Musaeva
Keyword(s):  
Oil And Gas ◽  
Raw Materials ◽  
Fire Hazard ◽  
Oil And Gas Industry ◽  
High Energy ◽  
Oil Refining ◽  
Repair Costs ◽  
Ansys Cfx ◽  
Processing Plants ◽  
Propeller Blades

In the oil and gas industry, bottom sediments are deposited in reservoirs, which reduce the efficiency of oil refining. The optimal yield of light oil products during primary oil refining was considered. To achieve high energy efficiency, it is necessary to compound the oil in the tank using agitators. The available propeller agitators are considered, and their shortcomings are revealed. The disadvantages include: high repair costs, the presence of an electric motor that increases the fire hazard of production, the occurrence of axial loads as a result of rotation and clogging of impurities in the propeller blades. A jet mixer can compensate for the disadvantages of propeller agitators. The simulation was performed using the ANSYS CFX software package. Models have been developed for: cyclic mixing; mixing with a propeller agitator; mixing with a jet agitator. A strength calculation was performed with the ANSYS-Static Structural module with imported data from ANSYS CFX for the propeller and jet agitator. It is revealed that the jet mixer, with its simple design and operation in comparison with other compounding methods, allows to achieve better mixing and lower loads on the tank.

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