TechnicalNoticeonREVISEDGUIDELINESONALTERNATIVEDESIGNANDARRANGEMENTSFORSOLASCHAPTERSII-1ANDIII(MSC.1-Circ.1212-Rev.1)IssuedbyIMO

CCSTechnical Information(2020)Technical Information No.25 Total No.459Feb.28,2020(Total 10 pages)To:Ship owners,Shipyards,Products Manufacturers and Designers,Relevant departments of CCSHeadquarters,CCS site surveyors,CCS plan approval centersTechnical Notice on REVISED GUIDELINES ON ALTERNATIVEDESIGN AND ARRANGEMENTS FOR SOLAS CHAPTERS II-1AND III (MSC.1-Circ.1212-Rev.1)Issued by IMOI.Foreword1.1 The Maritime Safety Committee of International Maritime Organization,at its101st session (5 to 14 June 2019),approved amendments to the Guidelines onalternative design and arrangements for SOLAS chapters ll-1 and Ill(MSC.1/Circ.1212),prepared by the Sub-Committee on Ship Systems and Equipment,at its sixth session.1.2 The Guidelines serve to outline the methodology for the engineering analysisrequired by SOLAS regulations ll-1/55 and Ill/38 on Alternative design andarrangements,applying to a specific engineering or life-saving system,design orarrangements for which the approval of an alternative design deviating from theprescriptive requirements of SOLAS chapters ll-1 and Ill is sought.Il.Technical points2.1 After reviewing the provisions of SOLAS Chapter Ill,IMO developed the goals,functional requirements and expected performance criteria for chapter Ill,aiming to