ISO 18309:2014

Overview

ISO 18309:2014 - Ships and marine technology - Incinerator sizing and selection - Guidelines provides practical selection criteria to help procurers choose the appropriate shipboard incinerator. It is a companion document to ISO 13617 and focuses on sizing, location, waste classification and operational considerations for typical vessel incinerators. It does not apply to dedicated incinerator ships used for industrial wastes (chemicals, manufacturing residues, etc.).

Key Topics

• Selection criteria and siting: factors affecting choice of unit and installation location to ensure ease of charging, ash removal and low operating cost.
• Waste quantity estimates: nominal generation rates for planning - galley/crew waste (1.5 kg/crew·day), passenger waste (2.5 kg/passenger·day), and packaging/stores (0.5 kg/person·day).
• Feeding modes: distinction between batch feeding (chamber cooled between loads) and continuous feeding (sluice or screw conveyors, pump-fed sludge oil).
• Sludge oil estimation: guidance for estimating daily sludge oil from main-engine operation (typical constant 0.182 litres/(kW·hr) for two-stroke engines, adjust if engine size is in hp). Suggested minimum sludge percentage (PCT) is 1–2 %; verify for MDO engines.
• Waste classification: shipboard waste types (Type 0–6) with typical moisture and heating-value ranges to inform incinerator capacity (examples: Type 0 highly combustible trash ~19 730 kJ/kg; Type 3 garbage ~5 800 kJ/kg).
• Capacity calculations: combine solid-waste and sludge-oil estimates; account for operating hours, batch vs continuous loading, repair downtime and flue-gas back‑pressure.
• Other considerations: unit rating (kW/BTU), emissions compliance (MARPOL Annex VI / ISO 13617), heat‑recovery options, induced-draft fan, modular design, dimensions/weight and ash removal methods.

Applications and Who Uses It

ISO 18309:2014 is aimed at:

• Shipowners and operators planning waste-handling systems
• Naval architects and shipbuilders specifying equipment layout and integration
• Marine engineers and technical superintendents sizing incinerators and service tanks
• Procurement teams comparing vendor claims and performance data
• Regulatory and environmental compliance officers checking MARPOL/ISO conformance
• Equipment suppliers and system integrators verifying capacity, flue-gas handling and controls

Practical benefits include optimized incinerator selection, compliant emissions performance, realistic service tank sizing and improved onboard waste management.

Related Standards

• ISO 13617 - Shipboard incinerators - Requirements (companion)
• IMO MARPOL Annex V & VI - Garbage and air‑pollution provisions for ships
• ASTM F1322 - Selection guidance for shipboard incinerators

Keywords: ISO 18309:2014, incinerator sizing and selection, shipboard incinerator, marine incinerators, sludge oil estimation, MARPOL Annex VI, waste classification, incinerator capacity.