Section 1 General

101. Application

1. Seamless shells of boilers made of steel forgings are to comply with the Annex 2-1.

2. Reinforced plastic materials used for construction or repair of plastic pipes, FRP ships or composite vessel are to comply with the Annex 2-8.

102. Approval of manufacturing process and manufacturing control

1. "control imperfection" referred in 102. 2 (2) of the Rules includes the deviation from the pro- grammed rolling schedules or normalizing or quenching and tempering procedures.

2. "at the discretion of the Society" referred in 102. 2 (3) of the Rules includes the confirmation for compliance monitoring of a countermeasure to prevent its recurrence in the complete investigation report.

103. Chemical composition

1. The application to 103. 1 of the Rules is to be in accordance with the followings:

(1) The chemical composition analyses from each ladle are to be applied to steel.

(2) The chemical composition analyses from each cast are to be applied to non-ferrous metals.

2. "if required by the Surveyor" referred in 103. 2 of the Rules means where a low reliability of the manufacturer's declared analysis is verified by the Society.

3. The application to 103. 3 of the Rules is to be in accordance with the followings :

(1) Selection of samples for the check analyses

Samples for the check analyses are to be taken from specimens for mechanical tests or from

the portion of the body adjacent to the part where mechanical specimens had been taken.

(2) Production analysis and its tolerance for steel

Production analysis and its tolerance for steel is to comply with K S D 0228 (Production Analysis

and its Tolerance for Wrought Steel) or the standard internationally recognized subject to the approval by the Society.

104. Testing and inspection

"The approval of quality assurance scheme specially specified by the Society" referred in 104. 4 of the Rules means where the quality assurance scheme of material manufacturer has been already ap- proved according to the requirements of Ch 5 of "Guidance for Approval of Manufacturing Process and Type approval etc." by the Society.

109. Retest procedure

"Any part of fracture is outside the one-fourth of the gauge length from the centre of gauge length" specified in 109. 4 of the Rules means the parts of "B" and "C" as shown in Fig 2.1.1 of the Guidance.

Guidance Relating to the Rules for the Classification of Steel Ships 2015 1

Pt 2 Materials and Welding

Ch 1 Materials Pt 2, Ch 1

2 Guidance Relating to the Rules for the Classification of Steel Ships 2015

Pt 2 Materials and Welding

Ch 1 Materials Pt 2, Ch 1