Section 7 Copper and Copper Alloys

702. Copper alloy castings

1. Application

"special consideration of the Society" referred in 702. 1 (1) of the Rules includes the possible normal operation throughout the repair of propellers damaged in service.

2. Manufacturing process

In application to 702. 3 (3) of the Rules, the stress relieving temperatures and holding times are to comply with the Annex 2-6.

3. Mechanical properties

(1) In application to 702. 5 of the Rules, the term "deemed appropriate by the Society" means the acceptance in accordance with Pt 1, Ch 1, 104. or 105. of the Guidance.

(2) The wording " specially required considering the design by the Society" in Table 2.1.96, Note 1 of

702. 5 of the Rules means in case where the requirements specified in Pt 5, Ch 3, 305. 2 (1)

(g) of the Guidance are applied.

4. Surface and dimension inspection

In application to 702. 7 (2) of the Rules, procedure for straightening of comply with Annex 2-6.

5. Non-destructive inspection

propeller casting is to

(1) The liquid penetrant test of steel propeller casting specified in 702.

comply with Annex 2-6.

(2) The division of severity zones of steel propeller casting specified in with the Fig 1 and 2 of Annex 2-6.

6. Repair of Defects

9 (1) of the Rules is to

702. 9 (2) is to comply

In application

Annex 2-6.

to 702. 10 (5) of the Rules, repair welding of propeller castings is to comply with

Guidance Relating to the Rules for the Classification of Steel Ships 2015 21

Pt 2 Materials and Welding

Ch 1 Materials Pt 2, Ch 1