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Overview
On any vessel with a Graviner oil mist detector installed in the engine room, the commissioning kit is not a luxury — it is the item that stands between a functioning safety system and one that has never been properly verified. The Graviner MK6 and MK7 oil mist detector systems are among the most widely trusted crankcase explosion prevention systems in the commercial marine industry, deployed across bulk carriers, tankers, container vessels, and passenger ships globally. But even the most reliable safety system delivers its full protection only when it has been correctly commissioned, calibrated, and verified as functional from the moment it is placed into service.
The Graviner Commissioning Kit, Part No. D9221-026 is the purpose-built commissioning tool set designed specifically for use with Graviner MK6 and MK7 oil mist detector units. It contains the equipment needed to carry out the complete commissioning procedure — functional testing, calibration verification, and operational confirmation — for both MK6 and MK7 units, making it the single correct kit for vessels and service engineers working across either generation of Graviner oil mist detection equipment.
What makes this commissioning kit the correct choice for Graviner OMD commissioning and maintenance is straightforward: it is the manufacturer-referenced commissioning tool set for the MK6 and MK7 platforms. Using the correct OEM commissioning kit eliminates compatibility uncertainty, ensures the commissioning procedure can be completed in full against the manufacturer’s own procedure documentation, and provides the functional assurance that classification societies and flag state surveyors expect when a Graviner oil mist detection system is presented for survey verification.
Key Features
Dual Platform Compatibility — MK6 and MK7 Graviner Units
The D9221-026 commissioning kit is designed for use with both Graviner MK6 and MK7 oil mist detector units — the two most widely installed generations of Graviner OMD equipment in the commercial marine fleet. For marine engineering teams, ship managers, and service companies maintaining vessels with either generation of Graviner OMD installed, this single commissioning kit eliminates the need to source separate commissioning tools for each unit type. A ship manager maintaining a mixed fleet with both MK6 and MK7 Graviner installations can use the same commissioning kit across all vessels — reducing spare parts inventory complexity and procurement overhead.
OEM-Referenced Commissioning Equipment
The kit is supplied under Graviner part number D9221-026 — the manufacturer’s own part reference for the MK6 and MK7 commissioning tool set. Using the OEM-referenced commissioning kit ensures that all components required to carry out the manufacturer’s commissioning procedure are present and correct. For vessels where the Graviner OMD system must be presented for class survey, port state control inspection, or flag state survey, the ability to confirm that commissioning was carried out with the manufacturer-referenced commissioning equipment adds an important layer of procedural credibility to the vessel’s safety system maintenance records.
Complete Commissioning Tool Set
The D9221-026 kit includes the test bulb, test fluid, and associated commissioning components required to simulate oil mist concentration levels and verify the MK6 or MK7 detector’s response against the manufacturer’s alarm threshold specification. Having all commissioning components supplied as a matched set avoids the risk of incomplete commissioning due to missing or incompatible individual components — a practical concern for vessels commissioning or re-commissioning Graviner OMDs in port under survey or port state control pressure.
Supports Correct Alarm Threshold Verification
The commissioning kit enables the marine engineer or service technician to verify that each MK6 or MK7 detector unit is responding to oil mist concentration at the correct alarm threshold — the fundamental safety function the system exists to perform. A Graviner OMD that has been installed but not correctly commissioned cannot be confirmed as functional. The commissioning kit provides the means to confirm, definitively, that each detector unit on the system is responding correctly — and that the system as a whole will provide the early warning of crankcase oil mist accumulation that prevents engine room explosions.
New Condition — Ready for Immediate Use
The D9221-026 commissioning kit is supplied in new condition — factory-fresh, with all components present and ready for immediate use. For time-sensitive commissioning activities carried out during vessel port calls, drydocking periods, or class survey windows, receiving a commissioning kit in confirmed new condition avoids the delays and uncertainty associated with used or incomplete kits of unknown status.
Technical Specifications
Manufacturer: Graviner
Part Number: D9221-026
Description: MK6 Oil Mist Detector Commissioning Kit
Compatible Units: Graviner MK6 and MK7 Oil Mist Detectors
Category: Oil Mist Detector Accessories / Commissioning Tools
Condition: New
Application: Commissioning, functional testing, and alarm threshold verification of Graviner MK6 and MK7 OMD units
Benefits
Confirms the Graviner OMD system is genuinely operational — not just installed. There is a significant difference between a Graviner oil mist detector that has been installed and one that has been correctly commissioned and verified as functional. The D9221-026 commissioning kit provides the means to close that gap — giving the chief engineer, classification surveyor, and port state control inspector confidence that the system will actually respond to an oil mist event in the way it was designed to.
Covers both MK6 and MK7 units — simplifying inventory and procurement. Rather than maintaining separate commissioning kits for each Graviner OMD generation, the D9221-026 covers both platforms. For ship management companies and marine equipment suppliers maintaining Graviner OMD spares for mixed-generation fleets, this significantly reduces spare parts inventory complexity.
Supports compliance with class and flag state survey requirements. Classification societies and flag state administrations require that crankcase explosion protection systems be demonstrated as functional during periodic surveys. Carrying the correct commissioning kit and being able to demonstrate a complete commissioning procedure supports this requirement — and avoids the survey delays and potential deficiency notices associated with an inability to functionally test safety-critical equipment.
Reduces commissioning time during time-critical port calls and drydocks. Commissioning a Graviner MK6 or MK7 system with incomplete tools — because the correct commissioning kit was not available — extends the time required to complete the commissioning procedure and may require additional port time or surveyor attendance. Having the correct D9221-026 kit on board means commissioning can proceed as scheduled, without delays due to missing equipment.
OEM part number provides a clean procurement and maintenance record. Sourcing and recording spare parts against manufacturer part numbers is the standard for well-managed vessel maintenance systems. Logging the D9221-026 commissioning kit against the Graviner part number provides a clean, auditable maintenance record that supports the vessel’s ISM Code safety management system documentation.
Who It’s For
The Chief Engineer or Second Engineer Responsible for Engine Room Safety Systems
You have a Graviner MK6 or MK7 oil mist detection system installed across the main engine and auxiliary machinery in the engine room. The system is due for class survey, or a unit has been replaced and needs to be re-commissioned before the vessel sails. You need the correct commissioning kit — the one the manufacturer references for the MK6 and MK7 — to carry out the procedure correctly and provide the surveyor or company superintendent with documented evidence that the commissioning has been completed properly.
The Marine Equipment Service Engineer or Authorised Service Technician
You provide Graviner OMD service, maintenance, and commissioning services to vessels calling at your port or during drydocking periods at a local yard. You work across vessels with both MK6 and MK7 Graviner installations — sometimes on the same service call. The D9221-026 commissioning kit is the tool that allows you to complete the full commissioning procedure for either unit type, issue the commissioning certificate, and give the vessel’s chief engineer and classification surveyor the documented functional verification they need.
The Ship Manager or Fleet Technical Superintendent
You manage the planned maintenance programme for a fleet that includes vessels with Graviner MK6 and MK7 oil mist detectors installed. Commissioning kits are a consumable spare — they are used during commissioning, periodic functional testing, and post-maintenance re-commissioning. Maintaining a stock of D9221-026 commissioning kits in your fleet spare parts inventory — or ensuring your vessels carry one as a ship’s spare — is the practical step that keeps the Graviner OMD commissioning procedure executable on demand, without waiting for a spare to arrive from a supplier.
Possible Applications
- New vessel delivery and initial commissioning — Graviner MK6 or MK7 OMD system commissioning during newbuilding delivery, ensuring the system is correctly set up and verified before the vessel enters commercial service
- Post-maintenance re-commissioning — Re-commissioning of individual MK6 or MK7 detector units following replacement or repair, confirming each unit is responding correctly to oil mist before the system is returned to operational status
- Scheduled class renewal and annual surveys — Functional demonstration of the Graviner OMD system during class renewal surveys, annual surveys, and port state control inspections requiring evidence of crankcase explosion protection system operability
- Drydock and planned maintenance periods — Comprehensive Graviner OMD system commissioning and functional verification during scheduled drydocking, allowing systematic testing of all detector units as part of the planned maintenance programme
- Engine room machinery upgrades and main engine overhauls — Re-commissioning of the Graviner OMD system following main engine or auxiliary machinery overhaul, where detector units may have been disturbed or removed during the overhaul procedure
- Marine equipment service companies and authorised Graviner service agents — Service technician commissioning kit for use during contracted Graviner OMD service visits, providing the tools to complete the full OEM commissioning procedure on MK6 and MK7 installations
- Ship management company fleet spare parts inventories — Maintained as a standing spare across managed fleet vessels with Graviner MK6 and MK7 installations, ensuring commissioning capability is available on demand without procurement lead time dependency
- Marine spare parts suppliers and distributor stock — Held as a stocked product for supply to vessels, ship managers, and service companies requiring the D9221-026 commissioning kit at short notice
Trust and Certifications
Graviner — A Kidde Brand, With Decades of Marine OMD Experience
Graviner is one of the most recognised and long-established names in marine crankcase explosion protection, with oil mist detection equipment installed across thousands of vessels in the commercial marine fleet. The MK6 and MK7 oil mist detector systems represent decades of development in engine room crankcase safety, and are accepted by all major classification societies as crankcase explosion protection systems meeting the relevant SOLAS and classification society requirements. The D9221-026 commissioning kit is the manufacturer’s own commissioning tool reference for these systems — not a third-party alternative.
SOLAS Crankcase Explosion Protection Requirements
SOLAS Chapter II-1 regulations require crankcase explosion protection systems on main propulsion engines above a certain bore size — and the Graviner MK6 and MK7 systems are among the accepted means of compliance. Correct commissioning and functional verification of the OMD system is required to demonstrate compliance with this requirement. The D9221-026 commissioning kit provides the means to carry out and document this verification in the form that class surveyors and port state control officers expect.
Classification Society Acceptance
Graviner MK6 and MK7 oil mist detectors carry type approval from the major classification societies — including Lloyd’s Register, DNV, Bureau Veritas, ClassNK, and ABS. Type approval means the system design has been independently evaluated and accepted as meeting the relevant safety standards. Using the manufacturer-referenced commissioning kit and following the OEM commissioning procedure is consistent with maintaining the system in the approved configuration — an important consideration when the system is presented for periodic survey.
Supplied by Alright Engineering Solutions
The Graviner Commissioning Kit D9221-026 is supplied through Alright Engineering Solutions Pte. Ltd., a Singapore-based authorised distributor of marine safety and gas detection equipment. Alright Engineering Solutions provides procurement support, spare parts sourcing, and technical guidance for marine safety systems across the Singapore and regional market — with stock available for rapid supply to vessels calling at Singapore or requiring air freight delivery to other ports.
Accessories and Variants
Graviner MK6 Oil Mist Detector — Complete Unit
For vessels requiring a complete Graviner MK6 oil mist detector unit rather than commissioning tooling alone, Alright Engineering Solutions can assist with sourcing MK6 detector units and system components. Contact our team with your specific MK6 system requirements and part references for availability and quotation.
Graviner MK7 Oil Mist Detector — Complete Unit and Spare Parts
The MK7 is the current-generation Graviner oil mist detector platform, with enhanced detection capability and communication interfaces compared to the MK6. Alright Engineering Solutions can assist with sourcing MK7 complete units, detector heads, control units, and associated spare parts for new installations and system upgrades. The D9221-026 commissioning kit covers both MK6 and MK7 — ensuring your commissioning tooling remains valid if your fleet transitions from MK6 to MK7 units.
Related Products from Alright Engineering Solutions
Portable Multi-Gas Monitors (ATEX/MED Certified) — For confined space entry and gas testing in engine rooms, cargo spaces, and other hazardous areas on board
Fixed Gas Detection Systems — Engine room, cargo hold, and machinery space fixed gas detection solutions for hydrocarbon, CO, H₂S, and O₂ monitoring
Marine Safety System Spare Parts — Fire detection, gas detection, and safety system spare components for a wide range of OEM platforms installed in the commercial marine fleet
Calibration Gas and Accessories — Calibration gas cylinders, regulators, and accessories for portable and fixed gas detection equipment maintenance
Get in Touch
If you need to source the Graviner Commissioning Kit D9221-026 for a commissioning programme, scheduled survey, or fleet spare parts inventory — whether for an immediate requirement or a planned maintenance period — contact Alright Engineering Solutions to confirm availability and request a formal quotation.
Our team can also assist with sourcing additional Graviner MK6 and MK7 system components, as well as marine safety and gas detection spare parts for your vessel or managed fleet.
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