Annex 1
Clasification Society 2024 - Version 9.40
Statutory Documents - IMO Publications and Documents - International Codes - 2011 ESP Code – International Code on the Enhanced Programme of Inspections During Surveys of Bulk Carriers and Oil Tankers, 2011 – Resolution A.1049(27) - Annex B – Code on the Enhanced Programme of Inspections During Surveys of Oil Tankers - Part A – Code on the Enhanced Programme of Inspections During Surveys of Double-Hull Oil Tankers - Annex 1

Annex 1

 

MINIMUM REQUIREMENTS FOR CLOSE-UP SURVEY AT RENEWAL SURVEY OF DOUBLE-HULL OIL TANKERS

Age ≤ 5 years 5 < Age ≤ 10 years 10 < Age ≤ 15 years Age > 15 years
Renewal Survey No.
1 		Renewal Survey No.
2 		Renewal Survey No.
3 		Renewal Survey No.
4 and subsequent
(A) One web frame, in a complete ballast tank (see Note 1)

(B) One deck transverse, in a cargo oil tank

(D) One transverse bulkhead, in a complete ballast tank (see Note 1)

(E) One transverse bulkhead in a cargo oil centre tank

(E) One transverse bulkhead, in a cargo oil wing tank (see Note 2)

 (A) All web frames, in a complete ballast tank (see Note 1)

(F) The knuckle area and the upper part (5 m approximately) of one web frame in each remaining ballast tank

(B) One deck transverse, in two cargo oil tanks

(D) One transverse bulkhead, in each complete ballast tank (see Note 1)

(E) One transverse bulkhead, in two cargo oil centre tanks

(E) One transverse bulkhead, in a cargo oil wing tank (see Note 2)

(A) All web frames, in all ballast tanks

(G) All web frames, including deck transverse and cross ties, if fitted, in a cargo oil tank

(G) One web frame, including deck transverse and cross ties, if fitted, in each remaining cargo oil tank

(C) and (D) All transverse bulkheads, in all cargo oil and ballast tanks

As for renewal survey No.3

Additional transverse areas as deemed necessary by the Administration

       
Notes:
(A), (B), (C), (D), (E), (F) and (G) are areas which shall be subjected to close-up surveys and thickness measurements (see appendix 3 of annex 11A/annex 11B).
(A) Web frame in a ballast tank means vertical web in side tank, hopper web in hopper tank, floor in double-bottom tank and deck transverse in double-deck tank (where fitted), including adjacent structural members. In fore and aft peak tanks web frame means a complete transverse web frame ring including adjacent structural members.
(B) Deck transverse, including adjacent deck structural members (or external structure on deck in way of the tank, where applicable).
(C) Transverse bulkhead complete in cargo tanks, including girder system, adjacent structural members (such as longitudinal bulkheads) and internal structure of lower and upper stools, where fitted.
(D) Transverse bulkhead complete in ballast tanks, including girder system and adjacent structural members, such as longitudinal bulkheads, girders in double-bottom tanks, inner bottom plating, hopper side, connecting brackets.
(E) Transverse bulkhead lower part in cargo tank, including girder system, adjacent structural members (such as longitudinal bulkheads) and internal structure of lower stool, where fitted.
(F) The knuckle area and the upper part (5 m approximately), including adjacent structural members. Knuckle area is the area of the web frame around the connections of the slope hopper plating to the inner hull bulkhead and the inner bottom plating, up to 2 m from the corners both on the bulkhead and the double bottom.
(G) Web frame in a cargo oil tank means deck transverse, longitudinal bulkhead structural elements and cross ties, where fitted, including adjacent structural members.
       

Note 1: Apart from the fore and aft peak tanks, the term "complete ballast tank" has the following meaning:

  • .1 all ballast compartments (hopper tank, side tank and double-deck tank, if separate from double-bottom tank) located on one side, i.e. portside or starboard side, and additionally double-bottom tank on portside plus starboard side, when the longitudinal central girder is not watertight and, therefore, the double-bottom tank is a unique compartment from portside to starboard side; or

  • .2 all ballast compartments (double-bottom tank, hopper tank, side tank and double-deck tank) located on one side, i.e. portside or starboard side, when the longitudinal central girder is watertight and, therefore, the portside double-bottom tank separate from the starboard-side double-bottom tank.

Note 2: Where no centre cargo tanks are fitted (as in the case of centre longitudinal bulkhead), transverse bulkheads in wing tanks shall be surveyed.

Parent topic: Part A – Code on the Enhanced Programme of Inspections During Surveys of Double-Hull Oil Tankers
Copyright 2022 Clasifications Register Group Limited, International Maritime Organization, International Labour Organization or Maritime and Coastguard Agency. All rights reserved. Clasifications Register Group Limited, its affiliates and subsidiaries and their respective officers, employees or agents are, individually and collectively, referred to in this clause as 'Clasifications Register'. Clasifications Register assumes no responsibility and shall not be liable to any person for any loss, damage or expense caused by reliance on the information or advice in this document or howsoever provided, unless that person has signed a contract with the relevant Clasifications Register entity for the provision of this information or advice and in that case any responsibility or liability is exclusively on the terms and conditions set out in that contract.