Hello aspirant, since you want to know more about M.Tech and P.G. Diploma in Industrial safety engineering, following is the information:

M.Tech in Industrial Safety Engineering
It is a 2 year program and this course provides knowledge about chemical composition, structure and properties of substances and about chemical processes.
You can have career opportunities in NPTC, Coal India Ltd. and TISCO etc., after completion of the degree. Also you have scope for jobs in many MNCs.
After clearing UGC-NET exam, you can also become a teacher in the same field.
The jobs that you can go for are:
Safety officer
Health and safety leader
Business safety manager
Assistant manager
Safety supervisor etc.

Top colleges offering this course are:
1. IIT Bombay
2. IIT Delhi
3. IIT Kharagpur
4. IIT Kanpur
5. NIT, Tiruchirapalli
6. University of Delhi, Delhi
7. RV College of engineering, Bangalore
8. NIT Calicut
9. Ramaiah institute of technology, Bangalore
10. NIT, Rourkela
You can find rest of the colleges through the given link:
https://engineering.careers360.com/colleges/list-of-engineering-colleges-in-India?f%5B0%5D=sm_college_degree%3AM.E%20/Mtech.&f%5B1%5D=sm_course_offered%3AIndustrial%20Engineering&f%5B2%5D=sm_course_offered%3ASafety%20and%20Fire%20Engineering

P.G. Diploma in Industrial Safety Engineering
The duration of this program is 1 year. As the industries are becoming more aware of the safety measures to be taken, and health of their employees. Therefore, there is a need for a professional to take care of the safety, health etc. These engineers create processes to improve the quality and output.
These courses are valid for any govt. job or govt. examination.

Top colleges offering this course are:

1. National Institute of Industrial Engineering, Mumbai
https://www.careers360.com/colleges/national-institute-of-industrial-engineering-mumbai/post-graduate-diploma-in-industrial-safety-and-environmental-management-course

2. Global Open University, Dimapur
https://www.careers360.com/colleges/national-institute-of-industrial-engineering-mumbai/post-graduate-diploma-in-industrial-safety-and-environmental-management-course

3. Swami Vivekananda University, Sagar
https://www.careers360.com/university/swami-vivekanand-university-sagar/pg-diploma-in-industrial-safety-management-course

All the best!
I hope this helps.