Alstom Transportation EHS Officer Interview Questions and Answers

Dependency injection is a design pattern where the dependencies of an object are provided externally.

• Dependencies are objects that a class needs to function properly

• Dependency injection allows for loose coupling between objects

• There are three types of dependency injection: constructor injection, setter injection, and interface injection

• Example: Instead of creating a new instance of a dependency within a class, the depe...read more

Steam API is a set of tools and resources for game developers to integrate Steam features into their games.

• Steam API provides access to features such as matchmaking, achievements, and user profiles.

• Developers can use Steamworks SDK to integrate Steam features into their games.

• Steam API also allows for in-game purchases and microtransactions.

• Examples of games that use Steam API include Counter-Strike: Global Offensive a

HashMap is a data structure that stores key-value pairs and uses hashing to retrieve values quickly.

• Hashing function is used to convert the key into an index of an array where the value is stored.

• Collisions occur when two keys have the same hash value, which is resolved using separate chaining or open addressing.

• HashMap uses an array of linked lists to handle collisions.

• The load factor determines when the HashMap shoul...read more

TPM stands for Total Productive Maintenance, a system that aims to maximize equipment effectiveness and minimize downtime.

• TPM involves regular maintenance and inspection of equipment to prevent breakdowns

• It also includes training employees to operate and maintain equipment properly

• TPM aims to create a culture of continuous improvement and teamwork

• Examples of TPM tools include visual management, autonomous maintenance, ...read more

MTTR stands for Mean Time To Repair. It is the average time taken to repair a system or equipment after a failure.

• MTTR is a key metric used in maintenance management.

• It helps in measuring the efficiency of maintenance processes.

• MTTR can be calculated by dividing the total downtime by the number of repairs.

• For example, if a machine was down for a total of 10 hours and it took 2 repairs to fix it, the MTTR would be 5 hou...read more

Maintain elevation of underground piping by using level instruments and proper installation techniques.

• Use a level instrument to check the elevation of the piping during installation.

• Ensure that the piping is installed with a consistent slope to prevent low spots where water can accumulate.

• Regularly inspect the piping to ensure that it has not shifted or settled, which can affect the elevation.

• Consider using supports o...read more

In my previous role as Assistant Manager, I was responsible for overseeing daily operations, managing staff, and ensuring customer satisfaction.

• Managed a team of employees and delegated tasks effectively

• Handled customer complaints and resolved issues in a timely manner

• Created and implemented strategies to improve efficiency and productivity

• Collaborated with other departments to achieve company goals

• Conducted performanc

Welding electrodes are chosen based on the material being welded. Different materials require different types of electrodes.

• Electrodes for mild steel have a coating that produces a stable arc and minimal spatter.

• Stainless steel electrodes have a coating that resists corrosion and produces a smooth, clean weld.

• Cast iron electrodes have a high nickel content to prevent cracking.

• Aluminum electrodes have a special coating ...read more