Tunnel Ventilation System

In rail and road tunnels where passenger comfort is of great concern, good ventilation and aerodynamics are vital. With the rapid development of technology, trains are getting faster and tunnels are getting longer, which makes aerodynamics and thermal effects in tunnels significant and ventilation have a profound effect on tunnel design. Ventilation systems supply varying air flow in vehicle tunnels and metros to meet the changing traffic conditions. These also remain operational during emergency situations.

Generally the features of a good tunnel ventilation include high efficiency, low noise, durability, high reliability, low maintenance, corrosion protection and flameproof motors along with variable speed drive and the potential for reverse flow.

Applications:

• Saccardo jet, injector or extraction enabled longitudinal ventilation.
• Transverse ventilation of road tunnels
• Semi-transverse ventilation of road tunnels
• Jet fans for longitudinal tunnel ventilation
• Skid mounted wet dust extractors to keep dust levels low during tunnel construction
• In house aerodynamics program provides transient pressure, aero dynamic drag predictions and flow velocity for highly complex situations involving multiple tunnels, cross passages, ventilation shafts, underground stations and multiple train movements.

With the use of computer software programs many companies are developing customized solutions for different projects. Simulations enables to produce appropriate, cost effective ventilation system solutions while adhering to fire and safety requirements.

Another type of ventilation system is Channel tunnel ventilation system which contains a set of fans Which are used as ventilation system for the channel tunnel.

Know About Online Recruitment and Its Benefits

Online recruitment or e-recruitment is the process of recruiting personnel by electronic resources, particularly through internet. It is the standard part of the recruitment process of many companies. It involves advertising job vacancies on either corporate websites or job sites. When compared to general printing advertisement, hundreds of applications are generated by this process.

Internet technology is used by the agencies for attracting job seekers. Bespoke application programs can be developed by means of special software. This helps in saving effort, time, and money. Apart from these, there are many benefits by online recruitment. Some of them are given here.

Cost Effective:
Larger amounts have to be spent for newspapers advertisements in general recruitment systems. But online recruitment saves printing and design costs and hence is a cost effective solution.

Wide Geographic Reach:
Online recruitment gives a bigger audience. A much wider candidate pool from various geographical areas can be generated by advertising online. This enhances chances of finding right candidate for specific job position. However, certain sorting and grading tools have to be used for screening right candidates.

Speed:
Online job advertisements help in getting quick results. Candidates can view and respond to them immediately. Quick access also helps in immediate processing of further phases of interview. So it saves a lot of time.

Automating the Process:
Online recruitment uses specific software that automatically gives specific candidates by skill and keyword.

Interaction with Candidates:
It is easy to contact with the candidates through websites and email. Information related to job position and any other queries can be accessed immediately.

Online recruitment helps in enhancing communication channels. It also enables to go directly to the candidate either immediately or at a later date, based on the arrival of opportunities.

Know Some Tips for Operating a Temporary Employment Agency

Temporary employment agencies are the agencies which provide temporary employment to job seekers. These agencies are hired by companies for helping them select appropriate candidates. The agencies are also termed as temp agencies. In the United States, temporary agencies are found to be the most popular form of business. Many manufacturers and small businesses need the help of temporary employment agencies. So many people are preferring to start a temp agency which brings huge success. It is important to know some tips for operating a temp agency.

Strong contacts with owners and people of HR department of various businesses have to be maintained. Strong and clear communications help in enhancing the relationship with the clients.

Great people management software is used by many agencies. This software helps in building up available temporary pool. Proper matches by keyword and skill can be provided by this software. It also helps in managing pay roll functions.

Selection of proper clients is necessary. The agencies are paid by the registered candidates. Also, when a candidate is selected by a company, it would be paid by the company. So it is important to have contract with professional companies. This would also enhance the fame of the agency.

Proper sales and recruiter staff should be chosen. They should be made clear about the goal and performance of the agency. All these details give certain information on operation of a recruitment agency.