Indian Oil Guwahati Refinery Internship: A Guide

Getting an internship inside a major PSU isn't easy. Seats are limited, and the application process can be surprisingly strict.

Applications for the 2026 Indian Oil Guwahati Refinery Internship closed on 15 April 2026. The next application cycle is expected to open around March next year.

If you're aiming for core engineering exposure or even an MBA internship inside a PSU, this one is worth a serious look. While waiting for the next cycle, review the eligibility requirements and start preparing your documents. This will help you apply quickly when applications reopen.

Program Indian Oil Guwahati Refinery Internship
| Organized By | Indian Oil Corporation Ltd (IOCL), Guwahati Refinery
| Location | Noonmati, Guwahati, Assam
| Application Window | Closed on 15 April 2026; next cycle expected March next year
| Mode | Offline / Physical Training
| Duration | 30 Days to 8 Weeks
| Eligible Courses | BTech / BSc Engineering, MBA, MCom, MA, MSc, MSW
| Engineering Eligibility | Minimum 60% (55% for SC/ST)
| MBA Eligibility | Minimum 55%
| Batches | 15 May, 10 June, 05 July (for 2026 cycle)
| Application Deadline | Closed on 15 April 2026

Quick heads-up: online submission alone isn't enough. IOCL also requires a physical document submission by speed post. Many students miss this step and their applications never get considered.

If you're exploring similar government internships, you might also want to check the NHAI Summer Internship 2026 and the IISER Bhopal Summer Internship 2026. And if you're still browsing options, you can always browse all opportunities on Talentd.

Indian Oil Guwahati Refinery Internship Eligibility

The eligibility depends on your course and semester. The refinery accepts both engineering and select postgraduate students.

Engineering Students

• BE / BTech / BSc Engineering students
• Must be in 6th semester for summer internship
• Minimum 60% average marks till the last semester
• For SC/ST students, minimum requirement is 55%

MBA Students

• MBA students specializing in HR or Finance
• Must be in 3rd semester or later
• Minimum 55% average marks

Other Postgraduate Courses

• MCom
• MA (Psychology, Sociology, Social Work)
• MSc (Chemistry, Environmental Science)
• MSW
• PG Diploma in Finance or Management

Students from these courses can apply after completing their first semester.

One more restriction worth noting. Diploma engineering, BBA, BCA, BA, BCom and BSc undergraduate students are not eligible for this internship.

Branches Allowed for Engineering Students

The Indian Oil Guwahati Refinery Internship mainly targets core and infrastructure branches. Eligible branches include:

• Mechanical Engineering
• Chemical Engineering / Petroleum Engineering
• Electrical Engineering
• Instrumentation Engineering
• Electronics and Telecommunication
• Civil Engineering
• IT / Computer Science
• Fire and Safety Engineering

Refinery internships tend to be most valuable for mechanical, chemical and instrumentation students because of the exposure to plant operations.

Internship Duration and Batches

The internship duration can vary depending on the training module selected.

• Minimum duration: 30 days
• Maximum duration: 8 weeks

For the 2026 summer cycle, the refinery had three joining batches:

• Batch 1: 15 May 2026
• Batch 2: 10 June 2026
• Batch 3: 05 July 2026

Students can choose their preferred batch while applying. Final confirmation is sent by email if you get selected.

Documents Required for IOCL Guwahati Internship

The application process involves a few mandatory documents. These must be uploaded during registration and later sent physically.

• Latest marksheet showing CGPA or percentage
• Institute NOC / consent letter signed by HoD
• Student undertaking form

You can download the official formats here:

• Download NOC Format (Engineering Students)
• Download NOC Format (Non‑Technical Students)
• Download Student Undertaking Form
• Download Terms and Conditions (Annexure I)

The NOC is especially important. It must be printed on your college letterhead and signed by the Head of Department. Without that approval, the refinery will reject the application.

How to Apply for Indian Oil Guwahati Refinery Internship

The process has both online and offline steps. Follow them carefully.

1. Create your student account
   Visit the official registration portal and create a new login ID using your email address.
2. Fill the online application form
   Enter your personal details, course, branch, semester, and academic percentage.
3. Select your institute
   Choose your college from the dropdown menu. If your institute is not listed, you can add it manually through the portal.
4. Upload required documents
   Upload your latest marksheet and the signed NOC from your institute.
5. Select internship batch
   Choose one of the three available summer training batches during the application.
6. Submit the application
   Once submitted, download or print the application details for record.
7. Send documents by speed post
   After online submission, send the required documents physically to the address below.

Postal Address:
Guwahati Refinery Learning and Development Centre
Opp. Guwahati Refinery Hospital
Indian Oil Corporation Ltd, Guwahati Refinery
Noonmati, Guwahati, Assam – 781020

Only applications whose documents reach the L&D centre will be considered.

Selection Process

IOCL Guwahati Refinery reviews applications internally after the deadline.

Selections depend on academic performance, branch relevance, and available training slots. Once selected, students receive a confirmation email with reporting instructions.

PSU internship confirmations arrive quite late sometimes, often just a few weeks before the batch start. So don't panic if you don't hear back immediately.

If you're specifically looking for PSU or government research internships, the IIRS ISRO Internship 2026 is another strong option. You can also explore our broader guide to Summer Internships 2026 for more programs opening this season.

Tips Before Applying

• Apply well before the deadline. Postal delays can ruin applications.
• Make sure the NOC is printed on official college letterhead.
• Double-check CGPA or percentage before submission.
• Choose the batch that matches your semester break schedule.
• Keep scanned copies of all documents ready before starting the form.