UL 12402-4:2020 free download

UL 12402-4:2020 free download STANDARD FOR SAFETY Personal Flotation Devices – Part 4: Lifejackets, Performance Level 100 – Safety Requirements
3.24DV DTModification byadding secondaryinflation definition to clause 3: secondary inflation alternate method of inflation which is provided in case the primary system fails
3.25DV DTModification byadding primaryinflation chamber(s) definition to clause 3: primary inflation chamber(s) inflation chamber (s) associated with the primary inflation system (s) that meets the applicable PFD performance requirements and provides the greatest in-water performance and ease of use
3.26DV DTModification byadding back-up inflation chamberdefinition to clause 3: back-up inflation chamber inflation chamber(s) other than the primary chamber(s) that, when used alone or together, provides redundancy to float the wearer in case a primary inflation chamber fails to function
3.27DV DTModification byadding supplemental inflation chamberdefinition to clause 3: supplemental inflation chamber inflation chamber other than a primary or back-up chamber that is intended for deployment after stabilization in the water, and provides enhanced performance such as higher freeboard, improved head support, additional stability, or features such as splash protection, location detection, etc.
3.28DV D2 Modification byadding somatotypes definition to clause 3: 3.28DV.1 somatotypes four categories of human body types characterized as: endomorph (En), mesomorph (Me), ectomorph (Ec), and central (Ce).
a) endomorph (En) – body type having a more rounded appearance with limited muscle definition, normal bone structure, higher body fat, and typically the waist and thigh areas carry a larger percentage of body mass than the upper chest area
b) mesomorph (Me) – body type having well defined muscles, large bone structure, and low body fat with broad shoulders tapering to a defined narrower waist
c) ectomorph (Ec) – lean body type with low muscle mass, light bone structure, and low body fat with a linear physique
d) central somatotype – body type having no dominant endomorph, mesomorph, or ectomorph characteristics
3.29DV D2 Modification byadding primaryclosure definition to clause 3: primary closure one or more means of securing the device onto the body so that the device can be expected to function substantially in the intended manner without the use of any other means of fastening the device onto the body
3.30DV D2 Modification byadding secondaryclosure definition to clause 3:secondary closure
closure or closures not meeting the definition of a primary closure
3.31DV D2 DTModification byadding structuralcomponentdefinition to clause 3: structural parts, materials, and components
parts, materials, or components that are integral to the device and that are essential for its correct function and performance
3.32DV D2 Modification byadding design inflation range definition to clause 3: design inflation range the range of buoyancy and pressure, as specified by the manufacturer, to which a compartment may be inflated to provide the intended in-water performance