PDF Publication Title:
Text from PDF Page: 021
— 25° in any direction on column-stabilised units — 15° in any direction on self-elevating units and — 22.5° about the longitudinal axis and/or when inclined 10° about the transverse axis on surface units. (See MODU Code 5.4.15 2.2.3 All components and systems covered by this standard shall be designed to operate under the following environmental conditions unless otherwise specified in the detailed requirements for the component or system: a) b) c) Ambient air temperature in the machinery space between 0°C and 45°C. Relative humidity of air in the machinery space up to 96%. Sea water temperature up to 32°C. Guidance note: Environmental conditions for electrical are given in DNVGL-OS-D201 Ch.2 Sec.2. Environmental conditions for instrumentation are given in DNVGL-OS-D202 Ch.2 Sec.4. ---e-n-d---o-f---g-u-i-d-a-n-c-e---n-o-t-e--- 2.2.4 The engine manufacturer shall not be expected to provide simulated ambient reference conditions at a test bed unless specified in the relevant standards. 2.3 Functional capability and redundancy 2.3.1 Components and systems shall be arranged with redundancy so that a single failure of any active component or system does not cause loss of any main function, as specified in DNVGL-RU-OU-0101 Ch.1 Sec.3 [1], DNVGL-RU-OU-0102 Ch.1 Sec.3 [1], DNVGL-RU-OU-0103 Ch.1 Sec.3 [1] and DNVGL-RU-OU-0104 Ch.2 Sec.1 [2]with the exceptions listed in [2.3.5]. 2.3.2 Redundancy can either be arranged as component redundancy or system redundancy as defined in Ch.1 Sec.1 [4.2]. 2.3.3 For redundancy on a component level a single failure of an active component shall not lead to a reduction of the output power for the main function served, as long as the main function is served by one system only. 2.3.4 For duplicated systems a single failure of an active component or a system shall not reduce the output power for the main function, served by the duplicate system, to less than 40% of the nominal output rated power. [2.3.1]and [2.3.2] shall be considered as general requirements. For evaluation of deviations or equivalent solutions reference should be made to the relevant standard for the component or system in question. Guidance note: For single engine propulsion plants all active components should be duplicated to satisfy [2.3.1]and [2.3.2]. Multi engine propulsion plants or propulsion plants with combinations of diesel engines, gas turbines and/or electrical motors are considered to provide redundancy on a system level. For these plants, duplication of the active components is not necessary provided at least 40% of output rated power for the main function is remaining in case of a single failure. For propulsion plants where less than 40% of output rated power remains, after a single failure, duplication of the active components will be required. Output rated power is in this context the total rated propulsion power for the driven unit (e.g. one or several propellers). All other main functions shall be treated accordingly. ---e-n-d---o-f---g-u-i-d-a-n-c-e---n-o-t-e--- Offshore standards, DNVGL-OS-D101. Edition January 2018 Marine and machinery systems and equipment Page 21 DNV GL AS Chapter 2 Section 1PDF Image | Marine and machinery systems and equipment 2018
PDF Search Title:
Marine and machinery systems and equipment 2018Original File Name Searched:
DNVGL-OS-D101.pdfDIY PDF Search: Google It | Yahoo | Bing
Development of a solar powered Electric Ship The Electricship website originally started off as a project to develop a comprehensive renewable, affordable, modular electric ship... More Info
Modular Boat Hull Composite The case for a unsinkable, modular composite hybrid boat hull... More Info
MS Burgenstock Hybrid Electric Catamaran Lake Lucerne Unique shuttle servicing Lucerne to the Burgenstock Resort... More Info
Ground Power Unit GPU Powered by Lithium Ion Batteries The goal of the Ground Power Unit is to provide a readily accessible, modular, ready-to-power solution for remote power... More Info
CONTACT TEL: 608-238-6001 Email: greg@electricship.com (Standard Web Page)