Standard Guide for Installation and Application of Type C Portable Tanks for Marine LNG Service
4.1 This guide is intended to define and identify best practices for minimum requirements for the design, installation, and application of Type C portable tanks for marine service on LNG fueled vessels for service as a LNG fuel tank. These best practices provide added detail to the requirements in 6.5 of the IGF Code to facilitate consistent and practical implementation of those requirements.
1.1 This guide is intended to identify and define the minimum requirements for the best practices in the design, installation, and application of Type C portable tanks in marine liquefied natural gas (LNG) fuel tank service used on LNG-fueled vessels.
1.2 This guide comprises the necessary guidance for regulatory compliance in addition to the requirements of the IMO IGF Code, along with the risk assessment considerations to detail the criteria for design, location, configuration, associated safety systems, and periodic system inspections. Included in the safety systems criteria would be leakage/spill detection and containment, water spray protection, emergency shutdown, grounding requirements, pressure relief to a fixed venting system, associated alarms, and color code markings for system identification. The locating and securing of suitable tank types with associated systems for marine service that will ensure compliant vessel stability with appropriate access to critical systems and connections for emergency response and vessel egress will also be addressed in this guide.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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