In accordance with SOLAS Chapter III (Regulation 20 and Regulation 32), IMO MSC/Circ.1114 (Guidelines for Periodic Testing of Immersion Suit and Anti-Exposure Suit Seams and Closures), and IMO Resolution MSC.81(70), all shipboard immersion suits, constant wear anti-exposure suits, and inflatable lifejackets must undergo rigorous annual examinations and periodic seam pressure testing to guarantee survival during abandon-ship emergencies in cold waters.
Engineering Overview & Table of Contents
- 1. Regulatory Standards: IMO MSC/Circ.1114 & SOLAS III Requirements
- 2. Immersion Suit Air Pressure Testing: Seams, Zippers & Closures
- 3. Inflatable Lifejacket Servicing: Dual Chamber WP Test & Firing Heads
- 4. SOLAS Lifejacket Lights, Whistles, Buddy Lines & Retro-Reflective Tape
- 5. Vulcanized Neoprene Seam Repairs & Heavy-Duty Zipper Lubrication
- 6. Dockside Exchange & Rapid Fleet Recertification Across Indian Ports
1. Regulatory Standards: IMO MSC/Circ.1114 & SOLAS III Requirements
SOLAS mandates that an approved immersion suit must be provided for every person onboard, with additional suits placed at remote work stations (bridge, engine room control room, and forward mooring stations). Seanav delivers certified Immersion Suit Supply, Lifejacket Supply, Immersion Suit Annual Inspection, and Lifejacket Annual Servicing across Viking, Survitec, Lalizas, Mullion, and Stearns safety gear.
2. Immersion Suit Air Pressure Testing: Seams, Zippers & Closures
Under IMO MSC/Circ.1114, immersion suits exceeding 3 years of age (and annually for suits older than 10 years) must undergo pressurized air leak testing:
Pressurized Leak Testing Methodology:
- Suit Inflation: Inserting specialized test plugs into the face opening, inflating the suit using clean compressed air to a test pressure of 1.4 to 2.0 kPa (approx. 14–20 mbar).
- Seam Leak Detection: Applying soapy water solution across all glued and vulcanized seams, wrist seals, ankle bands, and waterproof zipper teeth to detect micro-bubbling.
- Pressure Decay Verification: Suit must hold test pressure without dropping more than manufacturer-specified tolerances over a 15-minute test period.
- Thorough Rinsing and Drying: Washing residue soap with demineralized water and drying on hanging racks in temperature-controlled drying rooms before folding.
3. Inflatable Lifejacket Servicing: Dual Chamber WP Test & Firing Heads
Dual-chamber inflatable lifejackets utilized by ship pilots, deck crew, and offshore personnel feature automatic hydrostatic and water-soluble paper bobbin inflators:
- Working Pressure Chamber Test: Inflating both buoyancy chambers to working pressure (approx. 15 kPa / 150 mbar) for 24 hours to verify chamber welded seam cohesion.
- CO2 Gas Cylinder Weighing: Precision weighing of 33g, 38g, or 60g CO2 cylinders; rejecting cylinders with corrosion or weight loss exceeding 1.0 gram.
- Automatic Firing Head Renewal: Replacing expired hydrostatic mechanisms (Hammar MA1) or water-soluble cellulose capsules (Halkey-Roberts / UML).
- Manual Oral Inflation Tube: Testing oral inflation non-return check valves and dust caps.
4. SOLAS Lifejacket Lights, Whistles, Buddy Lines & Retro-Reflective Tape
During the annual survey, all accessories are rigorously examined:
| Safety Accessory | SOLAS Standard | Seanav Servicing Scope |
|---|---|---|
| Lifejacket Emergency Light | Flashing > 0.75 cd for ≥ 8 hours | Water-activated contact testing; battery expiry date audit; replacing dated units with fresh 5-year LED lights. |
| Retro-Reflective Tape | IMO Res. A.658(16) compliant (400 cm²) | Checking adhesion, surface cracking, and replacing faded prismatic reflective tape. |
| Lifting Loop & Buddy Line | Tensile strength ≥ 3.2 kN | Inspecting safety harness stitching, D-rings, and buddy line clip attachments. |
5. Vulcanized Neoprene Seam Repairs & Heavy-Duty Zipper Lubrication
Minor tears or seam delamination are repaired using manufacturer-approved vulcanizing neoprene cement and heat-cured bonding patches. Watertight bronze or plastic zipper closures are cleaned of salt encrustation and lubricated using non-petroleum beeswax or food-grade paraffin sticks.
6. Dockside Exchange & Rapid Fleet Recertification Across Indian Ports
Seanav maintains extensive safety gear pools across Mumbai, JNPT, Kandla, Mundra, Cochin, Chennai, and Visakhapatnam, enabling rapid dockside exchange so vessels can sail without delay while landed suits undergo thorough shore station recertification.
Schedule Immersion Suit & Lifejacket Testing or Dockside Supply
Discover our certified life-safety equipment scope on our Immersion Suit & Lifejacket Servicing Hub or contact our logistics team at any Indian Commercial Port.