A gas-filling company had already invested in compressors, manifolds, fire-safety equipment and civil construction when the management discovered a serious approval gap.
Nearly 70% of the proposed facility had been constructed, but the installed cylinder shed did not match the layout submitted for PESO approval. The vehicle movement area was narrower than shown in the drawing, the filling manifold was too close to the storage section, and the bulk-gas vessel had not been included in the approval plan.
The company expected to start commercial operations within 30 days. Instead, it had to revise the layout, relocate equipment, reconstruct part of the shed and apply for additional approval for the bulk storage system. The delay affected customer contracts, equipment financing and working capital.
This type of problem is common when businesses treat PESO approval as a documentation exercise instead of a plant-design requirement.
PESO approval for gas cylinder filling and storage must be planned before construction begins. The activity, type of gas, maximum cylinder inventory, filling method, storage capacity, building layout, safety distances and emergency arrangements must all match the final licensed facility.
For businesses dealing with LPG, oxygen, nitrogen, hydrogen, CNG, CBG, acetylene, ammonia, chlorine or other compressed gases, the approval directly affects whether the plant can legally start filling, storing or dispensing gas.
PESO stands for the Petroleum and Explosives Safety Organisation. It regulates activities involving compressed gases, petroleum products, explosives and pressure vessels in India.
Gas cylinder filling and storage activities are primarily regulated under the Explosives Act, 1884 and the Gas Cylinders Rules, 2016. Depending on the nature of the facility, additional approvals may be required under the Static and Mobile Pressure Vessels (Unfired) Rules, 2016.
PESO approval is required to ensure that compressed gas is filled, stored and handled under controlled safety conditions. The organisation examines the facility layout, gas characteristics, filling arrangement, storage quantity, cylinder movement, firefighting system and surrounding area before allowing operations.
The applicable licence depends on the proposed activity.
A licence for one activity does not automatically cover another activity. For example, a Form F storage licence does not permit cylinder filling. Similarly, a Form E filling licence does not automatically authorise an unapproved bulk LPG or liquid oxygen vessel.
Compressed gas can create fire, explosion, toxic exposure, pressure-release and oxygen-displacement risks. The level of risk depends on the properties of the gas and the manner in which it is stored or filled.
An oxygen filling unit may have different safety requirements from an LPG bottling unit. A hydrogen facility requires more detailed material compatibility and hazardous-area assessment. A chlorine or ammonia installation may need stronger toxic-gas detection and emergency-response arrangements.
PESO approval helps ensure that the design addresses these risks before commercial operations begin.
The approval is also important because businesses may face operational restrictions if the facility is not properly licensed. Gas suppliers, insurers, lenders, industrial customers and local authorities may ask for valid PESO documents before accepting the plant.
Non-compliance may result in:
The cost of correcting a completed plant is generally much higher than the cost of reviewing the layout before construction.
The first compliance decision is identifying the correct licence form.
Form E is generally required where compressed gas is filled into cylinders. It may apply to facilities handling oxygen, nitrogen, hydrogen, LPG, CNG, acetylene, industrial gases and other notified compressed gases.
The licence is linked to the gas category mentioned in the application. A company approved to fill one gas should not begin filling another gas without reviewing whether a licence amendment is required.
The filling licence evaluates:
Form F generally applies to the storage of filled compressed gas cylinders above the exempted quantity.
The permitted quantity, gas type and storage arrangement are recorded in the licence. Businesses must ensure that the actual cylinder inventory remains within the approved capacity.
A Form F storage facility may include:
Most integrated gas-filling plants require both filling and storage approval.
In such facilities, PESO reviews the relationship between the filling area, empty-cylinder storage, filled-cylinder storage, bulk-gas source, vehicle movement and emergency access.
The applicant should clearly show:
The Gas Cylinders Rules, 2016 form the main regulatory framework for cylinder filling and storage in India.
Rule 50 deals with the grant and endorsement of licences. A Form E, Form F or Form G licence does not become operational merely because the application has been approved on paper. The premises must be inspected and found compliant before the licence is endorsed for operation.
Rule 51 deals with the period of the licence. Forms E, F and G may be granted or renewed for a period ending on 30 September of the relevant year, subject to the maximum permitted period.
A licence may be granted or renewed for up to 10 years. Businesses should not assume that every licence is automatically valid for 10 years. The actual validity depends on the period selected, fees paid and approval granted.
Rule 54 becomes relevant when changes are proposed after approval. Material changes should be evaluated before they are implemented.
An amendment may be required when a company plans to:
Making physical changes first and applying for approval later can lead to inspection objections and operational delay.
Businesses preparing a fresh application should avoid using old checklists without reviewing recent amendments.
Rule 48 of the Gas Cylinders Rules was omitted through an amendment effective from 5 June 2026.
Older checklists may still refer to a district authority, Gram Panchayat or local-body NOC under Rule 48. That specific requirement should not be treated as a continuing requirement under the deleted rule.
However, removal of Rule 48 does not eliminate other approvals that may apply independently.
A gas facility may still require:
The approval matrix must therefore distinguish between a deleted PESO requirement and other continuing state or local requirements.
The amended framework introduced permanent and tamper-proof barcode or QR-based identification requirements for cylinders and cryogenic containers used for filling compressed gases and liquids.
Filling plants should include barcode verification in their operating procedure. Cylinder identification should be checked during receipt, inspection, filling and dispatch.
A practical cylinder-traceability system should capture:
Operating with untraceable, overdue or incorrectly marked cylinders may create both safety and licensing risks.
PESO fees were revised in 2025. The fee depends on the form, gas category, quantity, validity period and applicant category.
For Form E, the standard fee is generally calculated separately for each gas category proposed to be filled.
Illustrative Form E fees include:
| Applicant Category | Fee per Gas Category |
|---|---|
| Standard applicant | ₹5,000 |
| Eligible micro or small enterprise/startup | ₹2,500 |
| Eligible women entrepreneur | ₹1,000 |
Applicants claiming a concession must maintain valid supporting documentation. Depending on the category, this may include Udyam registration, DPIIT startup recognition or evidence of qualifying ownership.
Recent amendments have also introduced updated technical standards for hydrogen systems, cylinder materials, valves and cryogenic equipment.
Specified compressed-hydrogen, CNG, nitrogen and compressed-air cylinders may have a water capacity exceeding 1,000 litres and extending up to 3,000 litres, subject to prescribed conditions and diameter limitations.
Businesses entering the hydrogen or high-capacity cylinder segment should not rely on a generic LPG or industrial gas layout. Material selection, leakage control, ventilation, electrical classification and emergency planning require a gas-specific review.
PESO approval normally involves more than one stage. The strongest applications are prepared by integrating regulatory planning with engineering design.
The applicant should first identify:
This exercise determines whether Form E, Form F, Form G or more than one approval is required.
The selected site should be reviewed before the lease, purchase or construction decision is finalised.
PESO drawings generally require details of the licensed area and surrounding features within 100 metres. Nearby buildings, roads, electrical lines, public places, industrial units and plot boundaries should be accurately shown.
Site feasibility should examine:
A technically unsuitable plot cannot always be corrected through documentation.
The layout should be prepared on the basis of the actual proposed facility.
It should clearly indicate:
The process description and P&ID should correspond with the layout. Differences between drawings often result in clarification letters.
The prior-approval application is submitted through the PESO online system with Form C, drawings, technical documents and prescribed fees.
Construction should follow the approved layout. If the project team changes the design after approval, the change should be reviewed before implementation.
Civil construction, equipment installation, electrical work and firefighting arrangements must be completed according to the approved plans.
The project team should conduct an internal compliance inspection before requesting PESO inspection.
The final submission should include updated documents and as-built confirmation.
The licence-stage application may require:
PESO may inspect the premises to verify that the installation matches the approved documents.
Inspection may cover:
Operations should begin only after the required endorsement is completed.
There is no single guaranteed timeline for every project. Processing depends on the type of gas, application quality, project readiness and inspection observations.
A practical planning timeline may be:
| Activity | Indicative Period |
|---|---|
| Applicability assessment | 2 to 5 working days |
| Site and layout review | 7 to 15 working days |
| Drawing and document preparation | 10 to 20 working days |
| PESO scrutiny | Case-specific |
| Construction and installation | Project-specific |
| Inspection preparation | 7 to 15 working days |
| Observation closure | Depends on deficiencies |
PESO has referred to a 21-day administrative scrutiny objective in certain communications. Businesses should not treat 21 days as a guaranteed end-to-end approval period.
The total project period may increase where:
The design requirements depend on gas type and licensed quantity.
For non-LPG toxic and flammable gas storage sheds, a clear distance of approximately 3 metres may be required around the shed, subject to the applicable design and approval conditions.
Industrial fencing may be required with a height of at least 2 metres. The filling manifold should also maintain adequate separation from storage and other risk areas.
For an LPG storage shed, the design guidance includes approximately 11 square metres of floor area for every 1,000 kilograms of LPG storage.
Ventilation should generally be at least 10% of the floor area.
Other commonly considered requirements include:
LPG safety distance increases with storage quantity. The applicable distance may begin at around 3 metres for smaller licensed quantities and increase up to 15 metres for larger storage quantities.
The final distance must be established through the approved plan rather than assumed from a general checklist.
Most delays are caused by inconsistency rather than the absence of a single document.
Common issues include:
A well-prepared application should be technically consistent across every document.
An LPG company proposed a bottling plant with a cylinder-filling shed and filled-cylinder storage area. The company correctly identified the need for Form E and Form F.
The project team prepared the layout, ordered machinery and completed major civil construction. However, LPG was to be supplied through a bulk storage vessel, and the approval requirement for that vessel had not been included in the compliance plan.
During the final review, the company discovered that the cylinder-filling licence did not independently authorise the bulk LPG installation.
The company had to:
The delay affected supply contracts and increased project overheads.
The core mistake was not a missing PAN card or GST certificate. It was an incomplete regulatory map.
For an integrated LPG or industrial gas project, the approval matrix should separately cover:
A PESO licence may be withheld, suspended or revoked where the premises do not comply with the approved plans or licence conditions.
Violations may also attract action under the Explosives Act.
Depending on the nature of the contravention, imprisonment may extend up to:
Operational consequences may be more immediate than prosecution.
A non-compliant facility may face:
Section 15 of the Environment Protection Act should not be treated as the primary penalty provision for a Gas Cylinders Rules violation. It may become relevant only where separate environmental rules, consents or directions are violated.
PESO approval for gas cylinder filling and storage should be integrated into the project from the site-selection stage.
The correct licence form, gas category, storage quantity, cylinder type, safety distances, filling system, bulk-gas source and emergency arrangements must be identified before construction begins.
The most effective approach is to complete the regulatory mapping first, obtain prior approval, construct according to the approved drawings and conduct a detailed compliance review before inspection.
Early planning reduces the risk of equipment relocation, licence rejection, commercial delay and production stoppage.
For gas-filling and storage businesses, the difference between a smooth approval and a delayed project is often not the number of documents submitted. It is the consistency between the documents, plant design and actual installed facility.
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Form E is generally required for filling compressed gas into cylinders. The specific approval depends on the type of gas and filling activity.
Form F is required where filled cylinders are stored above the exempted quantity. Integrated filling plants commonly require both Form E and Form F.
Forms E, F and G may be granted or renewed for a period ending on 30 September, subject to a maximum period of 10 years.
Rule 48 was omitted with effect from 5 June 2026. However, Fire, SPCB, building, factory and local approvals may still apply under separate laws.
