EN ISO 8311:2013 PDF

Scope: This International Standard specifies a method for the internal measurement of membrane tanks in ships intended for the transport of light hydrocarbons liquefied by refrigeration. In addition to the measurement process itself, the procedures are described that can be used to set up tables for tank capacity and correction tables for calculating the quantitative ship load. This International Standard can also be applied, with some modifications, to the calibration of independent tanks in prismatic form. For the procedures described in this International Standard, when measuring membrane tanks manually, the scaffolding used to set up the membrane is used to support the measuring instruments; However, for the internal electro-optical distance measurement method (EDM), other tools should be used to access the required measurement positions.

EN ISO 8311:2013 Referenced Document

IEC 60079-10-1:2008 Explosive atmospheres - Part 10-1: Classification of areas - Explosive gas atmospheres
IEC 60079-10-2:2009 Explosive atmospheres - Part 10-2: Classification of areas - Combustible dust atmospheres
IEC 60825-1:2007 Safety of laser products - Part 1: Equipment classification and requirements
ISO 7507-1:2003 Petroleum and liquid petroleum products - Calibration of vertical cylindrical tanks - Part 1: Strapping method
ISO 7507-4:2010 Petroleum and liquid petroleum products - Calibration of vertical cylindrical tanks - Part 4: Internal electro-optical distance-ranging method

2013 EN ISO 8311:2013 Refrigerated hydrocarbon and non-petroleum based liquefied gaseous fuels - Calibration of membrane tanks and independent prismatic tanks in ships - Manual and internal electro-optical distance-ranging methods
1995 EN ISO 8311:1995 Refrigerated Light Hydrocarbon Fluids - Calibration of Membrane Tanks and Independent Prismatic Tanks in Ships - Physical Measurement