IMO SOLAS, ISO 14520, NFPA 12 Gaseous Extinguishing System Solutions

ISO 14520-1:2015 (Gaseous fire-extinguishing systems – Physical properties and system design – Part 1: General requirements)

PORTALEVEL + PORTASTEELE

Chapter 9.2 Inspection, 9.2.1 General

9.2.1.3: The storage container contents shall be checked every 6 months as follows:

1. Liquefied gases: for halocarbon agents, if a container shows a loss of agent in quantity of more than 5% or a loss of pressure (adjusted for temperature) of more than 10%, it shall be refilled or replaced

Annex F – System Performance Verification

1. Every 6 months: perform the following checks and inspections:

1. 1. for liquefied gases, check weight or use a liquid level indicator to verify correct content of containers; replacer or refill any showing a loss of more than 5%

NFPA 2001:2018 (Standard on Clean Agent Fire Extinguishing Systems)

Chapter 8 Inspection, Servicing, Testing, Maintenance, and Training

Clause 8.3 Semiannual Service and Inspection. At least semi-annually, the agent quantity and pressure of refillable containers shall be checked

Clause 8.3.1 For halocarbon clean agents with a means of pressure indication, if a container shows a loss in agent quantity of more than 5 percent or a loss in pressure (adjusted for temperature) of more than 10 percent, it shall be refilled or replaced

Clause 8.3.6 Where the quantity of agent in the container is determined by special measuring devices, these devices shall be listed

NFPA 12:2018 (Standard on Carbon Dioxide Extinguishing Systems)

Chapter 4 General Information

Clause 4.8 Inspection, Maintenance and Instruction

Clause 4.8.3 Maintenance

Clause 4.8.3.5 High Pressure Cylinder Weights

Clause 4.8.3.5.1 At least semi-annually, all high pressure cylinders shall be weighed, and the date of the last hydrostatic test noted

Clause 4.8.3.5.2 If, at any time, a container shows a loss in net content of more than 10%, it shall be refilled or replaced