Section 8 Corrosion protection of internal tanks and spaces
Clasification Society 2024 - Version 9.40
Clasifications Register Rules and Regulations - Rules and Regulations for the Classification of Ships, July 2022 - Part 3 Ship Structures (General) - Chapter 16 ShipRight Procedures for the Design, Construction and Lifetime Care of Ships - Section 8 Corrosion protection of internal tanks and spaces

Section 8 Corrosion protection of internal tanks and spaces

Parent topic: Chapter 16 ShipRight Procedures for the Design, Construction and Lifetime Care of Ships

8.1 Protective coating systems in dedicated sea-water ballast tanks and double-side skin spaces – ShipRight Notations ACS(B) or ACS(B,D)

8.1.1 For ships that are required to comply with IMO Resolution MSC.215(82) - Performance Standard for Protective Coatings for Dedicated Seawater Ballast Tanks in all Types of Ships and Double-Side Skin Spaces of Bulk Carriers - (Adopted on 8 December 2006), all dedicated sea-water ballast tanks for all ship types and double-side skin spaces of bulk carriers are to have type approved coating systems applied in accordance with ShipRight Procedure Anti-Corrosion Systems Notation, see Ch 15 Corrosion Prevention of the Rules for Materials and Pt 1, Ch 2, 2.3 Class notations (hull) 2.3.17 for the list of ShipRight ACS notations.

8.1.2  ACS(B) or ACS(B,D) will be entered in Column 4 of the Register Book to indicate that the ship’s sea water ballast tanks and double-side skin spaces of bulk carriers are coated with approved coating systems according to IMO Resolution MSC.215(82) - Performance Standard for Protective Coatings for Dedicated Seawater Ballast Tanks in all Types of Ships and Double-Side Skin Spaces of Bulk Carriers - (Adopted on 8 December 2006).

8.2 Protective coating systems in the cargo oil tanks of crude oil tankers – ShipRight Notation ACS(C)

8.2.1 For ships that are required to comply with IMO Resolution MSC.291(87) – Adoption of Amendments to the International Convention for the Safety of Life at Sea, 1974, as Amended – (Adopted on 21 May 2010) , Owners may request to receive the optional notation ACS(C), which indicates that the cargo oil tanks are protected in compliance with IMO Resolution MSC.288(87) – Performance Standard for Protective Coatings for Cargo Oil Tanks of Crude Oil Tankers – (Adopted on 14 May 2010) , and are to have type approved coating systems applied in accordance with ShipRight Procedure Anti-Corrosion System Notation and Ch 15 Corrosion Prevention of the Rules for Materials.

8.2.2  ACS(C) will be entered in Column 4 of the Register Book to indicate that the ship’s cargo oil tanks are protected using approved materials in accordance with IMO Resolution MSC.291(87) – Adoption of Amendments to the International Convention for the Safety of Life at Sea, 1974, as Amended – (Adopted on 21 May 2010) .

8.2.3 When in compliance with IMO Resolution MSC.291(87) – Adoption of Amendments to the International Convention for the Safety of Life at Sea, 1974, as Amended – (Adopted on 21 May 2010) , but the ACS(C) notation is not requested, this compliance may be indicated on the applicable certification, Ch 15 Corrosion Prevention of the Rules for Materials.

8.3 Alternative means of corrosion protection for cargo oil tanks of crude oil tankers – ShipRight notation ACS(C*)

8.3.1 For ships that are required to comply with the IMO Resolution MSC.291(87) – Adoption of Amendments to the International Convention for the Safety of Life at Sea, 1974, as Amended – (Adopted on 21 May 2010) , as amended, Owners may request to receive the optional notation ACS(C*), which indicates that all cargo tanks are protected in accordance with IMO Resolution MSC.289(87) – Performance Standard for Alternative Means of Corrosion Protection for Cargo Oil Tanks of Crude Oil Tankers – (Adopted on 14 May 2010) , by application of corrosion resistant steel, see Ch 3, 1.3 Corrosion resistant steels for cargo oil tanks of crude oil tankers of the Rules for Materials and ShipRight Procedure Anti-Corrosion System Notation.

8.3.2  ACS(C*) will be entered in Column 4 of the Register Book to indicate that the ship’s cargo oil tanks are protected using approved materials in accordance with IMO Resolution MSC.291(87) – Adoption of Amendments to the International Convention for the Safety of Life at Sea, 1974, as Amended – (Adopted on 21 May 2010) , as amended.

8.3.3 When in compliance with IMO Resolution MSC.291(87) – Adoption of Amendments to the International Convention for the Safety of Life at Sea, 1974, as Amended – (Adopted on 21 May 2010) , but the ACS(C*) notation is not requested, this compliance may be indicated on the applicable certificate.

8.4 Protective coatings for void spaces on bulk carriers and oil tankers – ShipRight Notation ACS(V)

8.4.1 For ships within the scope of IMO Resolution MSC.244(83) - Adoption of Performance Standard for Protective Coatings for Void Spaces on Bulk Carriers and Oil Tankers - (Adopted on 5 October 2007), Owners may request to receive the optional notation ACS(V), which indicates that the void spaces are protected according to the ShipRight Procedure Anti- Corrosion System Notation.

8.4.2  ACS(V) will be entered in Column 4 of the Register Book to indicate that the ship’s void spaces are protected in accordance with IMO Resolution MSC.244(83) - Adoption of Performance Standard for Protective Coatings for Void Spaces on Bulk Carriers and Oil Tankers - (Adopted on 5 October 2007).

8.4.3 When in compliance with IMO Resolution MSC.244(83) - Adoption of Performance Standard for Protective Coatings for Void Spaces on Bulk Carriers and Oil Tankers - (Adopted on 5 October 2007), but the ACS(V) notation is not requested, this compliance may be indicated on the applicable certificate.

8.5 Protective coating systems in dedicated seawater ballast tanks – Descriptive note PCWBT ()

8.5.1 For ships that are not required to comply with IMO Resolution MSC.215(82) - Performance Standard for Protective Coatings for Dedicated Seawater Ballast Tanks in all Types of Ships and Double-Side Skin Spaces of Bulk Carriers - (Adopted on 8 December 2006) , all sea-water ballast spaces having boundaries formed by the hull envelope are to have a corrosion protection coating applied, see ShipRight Procedure Protective Coatings in Water Ballast Tanks (PCWBT). The month and year that the coating is approved is to be appended to the descriptive note within brackets.

8.5.2 Where requested, a descriptive note PCWBT () (Protective Coating in Water Ballast Tanks) will be entered in column 6 of the Register Book to indicate that all sea-water ballast spaces having boundaries formed by the hull envelope have a corrosion protection coating applied, and that the coating remains efficient and is maintained in good condition. The month and year that the coating is approved is to be appended to the descriptive note within brackets.

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