Refinery process operators and shift supervisors
Hydrotreating, amine and sulphur units are the places where the gas is produced and handled.
Course snapshot
CourseBasic H2S Training
OPITO code9014
DurationHalf Day
Fee₹12,500
Validity2 Years
OPITO code9014, Basic H2S
Duration and feeHalf day, ₹12,500
Certificate valid2 years
Experience neededNone; medical questionnaire
Mumbai to KochiAbout 2 h by air
Where H2S meets Mumbai's industry
The Mahul and Trombay belt on Mumbai's eastern seafront holds two large refineries. BPCL states that its Mumbai refinery processes 12 million tonnes of crude a year and has added a diesel hydrotreater, a naphtha isomerisation unit and a gasoline treatment unit to meet BS-VI fuel standards. HPCL's Mumbai refinery, in the south-eastern part of the city, has grown from 7.5 to about 9.5 million tonnes a year, and its diesel hydrotreater complex includes a sulphur recovery unit, an amine regeneration unit and a sour water stripper. Sulphur removal is where H2S is concentrated, which is why operators, shutdown contractors and laboratory staff in these plants are the group most often asked for the course.
Offshore, the exposure is different. The Bassein processing complexes, BPA and BPB, were commissioned in 1987 and 1989 and handle acidic, corrosive gas containing H2S before it continues to Hazira. ONGC's Uran terminal, where western offshore gas comes ashore, added a gas sweetening unit under an expansion package awarded in 2010. People who work on these facilities, and the contractors who maintain them, meet H2S in enclosed modules and around many flanges.
A practical warning explains why classroom training is not optional. The smell of H2S is not a reliable alarm, because people can lose the ability to smell it even at low concentrations. OSHA guidance says the nose should not be used as a detector. That is why detection equipment and escape breathing apparatus sit at the centre of the course rather than awareness alone.
BPCL Mumbai refinery, Mahul
Processes about 12 million tonnes of crude a year with hydrotreating and treatment units added for BS-VI fuels.
HPCL Mumbai refinery, Mahul
Expanded from 7.5 to about 9.5 million tonnes a year; its diesel hydrotreater includes a sulphur recovery unit and a sour water stripper.
Bassein complexes BPA and BPB
Process acidic gas containing H2S before it moves on to Hazira.
ONGC Uran gas processing
Includes a gas sweetening unit added in an expansion package awarded in 2010.
Roles where a Mumbai employer is likely to ask for H2S training
Turnaround and shutdown contractors
Opening lines and vessels that have been in sour service exposes fitters, riggers and scaffolders to residual gas.
Offshore production and maintenance crew
Staff working on sour-gas complexes are commonly asked for H2S awareness on top of the offshore induction; confirm with the site.
Emergency response and fire team members
Rescue in a gas atmosphere requires breathing apparatus and a rehearsed plan.
H2S training next to your other certificates
Basic H2S is a different kind of course from the offshore inductions. T-BOSIET and BOSIET with EBS cover helicopter escape, sea survival and firefighting; they do not teach you to use a gas detector or escape set. If your job is offshore on a sour-gas asset, you may need both, in sequence. If you are a shift operator or contractor at a Mahul refinery, you may only need H2S plus a permit-to-work course. Check your site's rules rather than guessing, as site orders vary. Because the course is half a day and each induction runs three, ask our team whether the half day can be put before or after your induction days in a batch you are attending.
Tropical Basic Offshore Safety Induction and Emergency Training (T-BOSIET) →
You are heading to a warm-water platform and need the induction as well; H2S is a separate course.
Basic Offshore Safety Induction and Emergency Training with EBS (BOSIET with EBS) →
Your client names the standard induction and also works with sour gas.
Permit to Work PTW System Training →
You issue or receive permits for jobs on lines and vessels that may contain H2S.
Hazardous Materials HAZMAT Training →
Your plant handles several hazardous substances beyond H2S.
What the half day covers, and how it relates to Mumbai plants
The course combines classroom theory with practical exercises using gas-detection equipment, escape breathing apparatus and a simulated casualty-rescue scenario. There are two assessments: a theory exam, with an online option, and a practical assessment. A medical questionnaire is completed before the course starts.
- 01
H2S characteristics
Properties and behaviour of the gas, and why sour water strippers and sulphur units need controls.
- 02
Physiological effects
How exposure affects the body at different levels. It also explains why smell is an unreliable warning.
- 03
Escape breathing apparatus
Correct use, operation and safety procedures for the escape set that refinery and platform workers carry.
- 04
H2S detection equipment
Detectors, alarms and monitoring systems. India's Factories Act schedule has long listed 10 ppm as the eight-hour limit and 15 ppm as the short-term limit; your site states the limits it applies.
- 05
Emergency response actions
Steps to take during a leak or exposure, including casualty rescue under the simulated scenario.
- 06
Assessment
Theory exam, with an online option, and a practical evaluation.
For Mumbai refinery, gas plant and offshore contractors
Refinery contractors, shutdown companies, plant EHS teams and offshore service firms send groups on short courses that fit between jobs. A half-day course is easy to place next to a longer programme.
Standards that shape training in Maharashtra
OPITO Basic H2S standard (9014)Practical and theory assessment; the certificate is valid for two years.
Factories Act, 1948, Second ScheduleHas long listed hydrogen sulphide at 10 ppm as an eight-hour average and 15 ppm as a short-term limit; ask your compliance team which labour-code provisions now apply.
Site and client rulesRefineries and platform operators set their own H2S training requirements for contractors.
What employers commonly ask for
| Course | Requirement note |
|---|---|
| Basic H2S Training | Asked for where a process, line or gas stream may contain hydrogen sulphide; confirm for your site. |
| Permit to Work PTW System Training | Often paired with H2S for turnaround supervisors and permit receivers. |
| Tropical Basic Offshore Safety Induction and Emergency Training (T-BOSIET) | For offshore crew working on warm-water platforms with sour gas. |
Planning a group booking
- Register the company at portal.imostacademy.in/register for team logins, rate-card pricing, group bookings, statements and renewal tracking.
- GST invoices go to Indian entities; credit follows a credit assessment.
- Collect the medical questionnaire before the trip, and ask people to declare any condition or medication.
- Track the two-year expiry in the portal and schedule renewals ahead of the next shutdown.
Operators and clients set their own requirements; confirm with your contract or HSE department.
Getting from Mumbai for a half-day course
Our campus is at Njarakkal on Vypin island. The flight from Mumbai takes about two hours, so a half-day course normally means one night in Kochi.
Fly in the day before
Land the evening before rather than relying on a morning flight.
Airport to campus
The airport is about 40 km from Njarakkal by taxi; from Ernakulam Junction the Goshree bridges bring you to Vypin in about 15 km.
Two ways to plan the trip
- 1
Standalone: one night in Kochi
Fly in the evening before, take the half-day course, and fly home that evening or the next morning. Ask our team for batch dates that suit.
- 2
As an add-on to an induction
If you are travelling for a three-day induction, ask whether the H2S half day can be placed before or after it in the same stay. That saves a flight.
- 3
Questionnaire, exam and practical
Complete the medical questionnaire first. The theory exam has an online option; the practical covers the escape set, detector use and a simulated rescue.
- 4
File the certificate and note renewal
Valid for two years. Set a reminder ahead of your next shutdown season.