Main contents of revisions are as follows:
Provisions
of classification:
Some special duties notations are adjusted as type
notations; the list of special duties notations is placed after the list of
type notations and before the list of service or service restriction notations.
Adding CCS newly developed Rules for Classification of Sea-going Boats, Guidelines
for Strength Assessment of Ships with Specific Service Area or Service Route or
Service Life, Guidelines for Enhanced
Fire Safety of Container Ships, Guidelines for Quality Assessment of Ship Data,
Guidelines for Monitoring and Evaluation of Ship Compartment Air Quality and
Biohazard Factors and Guidelines for Survey of Rim-driven Thruster, and
revising some related notations.
Hull：
Coordinating and revising the requirements for slot welding on the side plates
of the rudder sealing plate; clarifying that the types of fillet welds include
fillet welds, partial penetration fillet welds and full penetration fillet
welds; clarifying the approval type
for approved plans and documents of loading instruments software; clarifying that container ships in unrestricted service and with a
length of 150m and above are in accordance with CCS Rules for Structures of
Container Ships; clarifying the spacing requirements for buckling stiffeners on
main frames; adding deck thickness requirements for floating cranes in loading
conditions; clarifying flooding condition requirements for ore carriers and the
application scope of Sections 3 and 4; rearrangement of main structural members
of membrane type liquefied gas carriers.
Machinery installations：
Adding types of mechanical joint and fire endurance
test conditions, revising relevant fire endurance test requirements; revising
prototype test notes of flexible hoses; adding a numerical simulation test
based on computational fluid dynamics (CFD) for air pipe
automatic closing devices, as alternative to the reverse
flow test; clarifying load test requirements for gas mode of low pressure gas
fuel engines.
Electrical installations：
Revising
relevant requirements for cable coverings, assessing the current rating of
lighting circuits; clarifying applicable conditions for submitting calculations
for short-circuit for currents for approval.
Other parts：
Part 05 Revising
calculation parameter of crankshaft
of a reciprocating compressor, to comply with industry design and manufacture
Part 06 Revision made in
accordance with the latest UR F15, to refer to correct MARPOL regulation.
Part
08 Revising Chapter 6/Section
1, Chapter 13/Section 1, Chapter 19/Sections 1 to 3, Chapter 23/ Sections 6,
10, and 11, and Chapter 28/Section 2, based on industry feedback and expert review
meeting comments. Updating Chapter 17 regarding the description of SOLAS as
amended by MSC.421(98); revising the entire Chapter 26 according to the
requirements of URM74 for the design and installation of different types of
BWMS and adding UR F45 regarding additional fire safety measures related to the
installation of ballast water management systems.
Part
09 Mainly incorporating RCN 1
and Corrigenda 1 to IACS CSR 2021.
Part
10 Revising the requirements for not carrying service area reduction when Fd
and Fb are less than 1, base on industry feedback of ships in restricted
service.
Unless otherwise
specified, the 2022 Amendments to Rules for Classification of Sea-going Steel
Ships will take effect on 1 July 2022.
Note: In the amendments, blue underline is to highlight new insertions, strikethrough line is to highlight deleted
contents.
