As one of the many paths to achieve a sustainable built environment, the Malaysia uniform building bye-law with the new amendment stipulates that the OTTV of a building envelope with a total air-conditioned area exceeding 4000 m2 should not exceed 50 W/m2. Although, the existing formulae provided for calculating OTTV is only applicable to a traditional single skin façade (SSF) building. Therefore, this paper seeks to investigate and evaluate how the natural ventila tion in the cavity of a naturally ventilated double skin façade (NVDSF) will impact the OTTV of a building integrated with this façade typology. To achieve this goal, a hypothetical base-case was designed to represent a typical commercial building in Kuala Lumpur, Malaysia. The calculated OTTV value of the base case is compared with that of the same building integrated with naturally ventilated cavity using dynamic simulatio n software (EnergyPlus/DesignBuilder) tool. The result indicat es that the annual heat transferred through the east orientation of the building is hig her than all other orientations and by integrating a naturally ventilated cavity on all or ientations would reduce the cooling load over traditional single skin building by a ran ge between 46% and 84%. However, the cost implication of investing in buildings with this kind of façade require more exploration for a better understanding on the retur n of investment in Malaysia context.

The politics of oil pipelines have become progressi vely noticeable in American politics in recent years. Especially, energy security, envir onmental impact and debates about economic benefits have been provoked by the planned Keystone XL pipeline expansion projected to take bitumen from northern Alberta in Canada to refineries on the Gulf Coast in Texas. Drawing on the news that currently occurs regarding keystone-xl pipeline issue, this article asks a series of quest ions. What are the roles of political aspects (identification of political issue), enviro nmental aspect, economic approaches, and other implication towards the proposed project of keystone-xl pipeline? And what is the ongoing development of the project? We found that there are several reviews on the Keystone XL pipeline and some of the relevan t issues and implication of the project are discussed.

Commissioning is the process in which an equipment, facility, or plant is tested and verified. The verification and testing of all the components and systems must align with the design objectives and safety specifications. This paper reviews the comparative of commissioning in general nuclear power plant and conventional power plant. This paper’s prior focus is to explain the commissioning of nuclear power plant and other common power plant while highlighting the importance of licensing and testing guideline during the commissioning in accordance to plant safety. In addition, the comparative of licensing and testing guideline is also reviewed. Apart from that, the summarization of commissioning that is classified into commissioning preparation, execution and documentation & handover to the operation is discussed. Moreover the roles and responsibilities of personnel in supervising the commissioning process to ensure the activities are run smoothly are simplified, the interactions and the main recommendations concerning the commissioning-related events. Furthermore, a general review on the organization development, feasibility studies, site selection, commissioning planning & scheduling, and construction phase is done.

The main purpose of this review paper is to identify, determine and analyze the possible hazards and risks during high level waste spent fuel management. The process consists of analyzing the safety issues and possible risks during waste management according to IAEA safety standard series. The analysis will revolve around four possible major accidents and hazards during high level waste (spent fuel) management. From the analysis, we will be able to identify the most suitable methodology and safety regulations in coherent with IAEA standards during high level waste management which assures the safety of plant personnel, public community and environment for clean, green and safe energy supply. A total of 64 paper have been review.

Measurement invariance is one of the most important aspects of model development process without which the interpretations of research findings on population sub- groups may be vague and invalid. This study tested the measurement invariance of critical success factors for green cleaning implementation and performance model across different stakeholders in Malaysian Cleaning Industry. The study is essential to check if the proposed model and its underlying constructs have appropriate structural orientation regarding critical success factors for green cleaning performance and meaning across comparable varied groups. A quantitative, non-experimental, cross- sectional survey design was adopted for the study and data were collected from 500 participants who were chosen from three categories of respondents namely contractors, consultants and clients organisations using a combination of non- probability and stratified random sampling techniques. The data was analysed with the aid of the Statistical Package for Social Sciences and Analysis of Moment Structures Software (versions 22.0.0). The results show that all the three measurement invariance models tested have achieved acceptable goodness-of- fit indices. The study outcome also indicates that the critical success factors for green cleaning services implementation model are invariant across the three different stakeholders in the Malaysian cleaning industry. The findings suggest practical implications for cleaning service providers’, facilities managers and clients on the need to invest in the critical success factors mainly human, physical, financial and social resources and to productively align such for effective green cleaning services implementation to achieve competitive organisational performance.