scholarly journals REDUCTION OF LOCAL VIBRATION ON THE TILLER OF AN OUTBOARD MOTOR USING A TRANSOM MULTI-LAYER VIBRATION PAD

2020 ◽  
pp. 80-86
Author(s):  
Mikhail N. Pokusaev ◽  
Anastasia A. Khmelnitskaya ◽  
Konstantin E. Khmelnitsky ◽  
Aleksei A. Kadin
Keyword(s):  
Regulatory Requirements ◽  
Vibration Acceleration ◽  
Local Vibration ◽  
Manufacturing Plants ◽  
Safety Requirements ◽  
Small Vessels ◽  
Maximum Reduction ◽  
Actual Operating ◽  
Operating Instructions ◽  
General Safety

The article deals with the measurement and reduction of local vibration from outboard motors on small vessels. The level of local vibration on the tiller of an outboard motor of a small vessel according to GOST 28556-2016 "Outboard Motors. General safety requirements" should be specified in the motor operating instructions, but, according to the authors ' analysis, such information is not specified by manufacturers. To measure the vibration, modern verified equipment was used, including the "Ecofizika-110A" vibrometer. To reduce the vibration of outboard motors, the authors developed a multi-layer transom plate and carried out measurements on a motor boat with outboard motors "SEA PRO 2.5" and "SEA PRO 5.0". As a result of the study, it was found that the developed multi-layer transom overlay provides a maximum reduction of local vibration by 77% when measuring vibration acceleration, m/S2. It is also established that in Russia there are actually no regulatory requirements for the level of vibration on the tiller of outboard motors, while the system provided for in GOST 28556-2016 "Outboard motors. General safety requirements" standard of manufacturing plants, most often not specified in the actual operating instructions. This requires the development and introduction of standards for local vibration on the tiller of outboard motors or the expansion of existing regulations in the field of small vessels.

SAFETY DURING OPERATION OF FORGING AND STAMPING EQUIPMENT

2020 ◽  
Author(s):  
K.O. Kobzev ◽  
S.A. Vyalov ◽  
E.S. Bozhko ◽  
I.A. Zolotuhina ◽  
◽  
...  
Keyword(s):  
Production Equipment ◽  
Safety Requirements ◽  
Die Forging ◽  
Main Production ◽  
Hot Die Forging ◽  
General Safety

This article discusses the General safety requirements for the main production equipment, as well as General safety requirements for the tool and die tooling. Possible difficulties in hot-die forging shopsand ways to solve them in various situations are described.

Air Entrainment and the Fabrication of Concrete Railroad Ties

2015 ◽  
Author(s):  
Mohammed T. Albahttiti ◽  
Ahmad A. Ghadban ◽  
Kyle A. Riding ◽  
David Lange
Keyword(s):  
Prestressed Concrete ◽  
Air Entrainment ◽  
Vibration Exposure ◽  
Vibration Acceleration ◽  
Manufacturing Plants ◽  
Air Content ◽  
Concrete Properties ◽  
Air Void

Handling and vibration can affect the air content of prestressed concrete railroad ties. The amount and variation in vibration experienced in concrete railroad ties were investigated to determine the concrete fabrication conditions typically used. Two methods of fabrication were investigated by measuring the concrete properties and vibration exposure during placement at two concrete tie manufacturing plants. In addition to measuring the vibration distribution in concrete railroad ties, a pair of ties were selected for hardened-air void analyses to determine any variation of air content in relation to the height of the ties. The vibration results indicate the existence of constructive and destructive wave-interferences in tie cavities. These interferences may contribute to large variations in the vibration acceleration throughout the length, depth, and width of concrete crossties during fabrication. This may account for the air-loss across the depth of the ties.

scholarly journals Safety of Imported Machines - Selected Issues in the Context of Polish (UE) Regulation

2020 ◽  
Vol 2 (1) ◽  
pp. 174-182
Author(s):  
Agata Kielesińska
Keyword(s):  
Medical Devices ◽  
Safety Management ◽  
Quality Criteria ◽  
Safety Requirements ◽  
Specific Safety ◽  
A Priority ◽  
General Safety

AbstractThe purpose of the paper is to present the issues of ensuring the safety of machinery and equipment in accordance with the requirements of the Machinery Directive 2006/42/EC of May 17, 2006 on the essential requirements for machines, with regard to the sphere of their import and distribution. This issue is related to the dynamically developing trade in cheaper new machines, mainly from countries outside the EEA (including China) and is a priority for ensuring safety and protecting the health and life of users of this type of equipment in accordance with EU regulations. The use of a variety of machines in industry, in addition to general safety requirements, which may also include quality criteria, care for the environment and industry-specific safety management requirements (e.g. food, automotive, medical devices).

scholarly journals ‘ISOLATED IN OUR OWN NEIGHBOURHOOD’: ANALYSIS ON THE PROPOSAL TO REGULATE PEER-TO-PEER ACCOMMODATION SERVICES IN MALAYSIA

2021 ◽  
Vol 29 (2) ◽  
pp. 271-298
Author(s):  
Mahyuddin Daud ◽  
Norlaili Mat Isa
Keyword(s):  
State Level ◽  
Legal Framework ◽  
Peer To Peer ◽  
Disruptive Technology ◽  
Structured Interviews ◽  
Regulatory Requirements ◽  
Safety Requirements ◽  
Neighbourhood Analysis ◽  
The Government ◽  
Regulatory Guideline

Peer-to-Peer Accommodation services (P2PA) are mushrooming worldwide due to the expansion of digital services and Internet access. Since P2PA services operate fully online, small establishments utilise disruptive technology and surpass traditional hoteliers by surprise. In the first part of this article, we examine the problems caused by P2PA for ‘playing on an uneven field’, avoiding necessary taxes, skipping regulatory and safety requirements, and causing loss of tranquillity to the neighbourhood. Due to these problems, a proposal was moved by the government to regulate P2PA in Malaysia via a self-regulatory guideline, as analysed in the second part of the article. However, due to its non-binding status, the proposal will arguably lead to irregularities in regulatory mechanisms at the state level when enforced. P2PA hosts were asked to comply with regulatory requirements similar to hoteliers, but the platform providers have arguably avoided any P2PA related liability nor responsibility as they operate offshore. Applying qualitative research methods via content analysis and semi-structured interviews, the article concludes by proposing a legal framework to regulate the P2PA platform providers, including hosts and agents, which is deemed timely and necessary for Malaysia to safeguard the interests of both tourists and stakeholders.

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