挪威船级社(DNV)

APPENDIX A – DNV TYPE APPROVAL - 828.50

CABLE TIES

APRIL 2010

1.Introduction

This appendix contains the requirement on which DNV normally bases its type approval of Cable ties, used for Ships and Offshore Units.

The below is liable to change in the light of new experience gained.

1.1Document to be submitted for assessment (in triplicate)

1)Application for Type Approval form 90.01a. Only one copy.

2)Declaration form for cable ties (Chapter 3 in this programme)

3)Data sheets for each family of cable ties, giving information for each variant about:

a)type designation

b)part number

c)Specification of applied materials

d)dimensions (width, length, thickness)

e)loop tensile strength

f)minimum and maximum bundle diameter

g)colour

h)drawings or photographs illustrating product

1.2Design requirements

DNV Type approved cable ties shall comply with the relevant requirements of the following publications:

1.2.1General requirements

-DNV Rules for Classification of Ships/High Speed Light Craft & Naval Surface Craft and DNV Offshore standards (as applicable).

1.2.2Special requirements

IEC 62275 (2006-10) Cable management systems – Cable ties for electrical installations.

1.2.3Application limitations based on DNV Rule requirements:

For non-metallic cable ties:

a)Cables placed on non-horizontal cable trays or supports, shall have additional fixing by metallic cable clips or saddles at

regular distances (e.g. 1 to 2 m) in order to retain the cable during a fire.

b)Non-UV resistant cable ties shall not be used on open deck.

Applicable for all cable ties:

a)Ambient operation air temperature is from -25°C to +45°C for cable ties installed on open deck, in dry cargo holds, steering

gear compartments, deckhouses, forecastle spaces and similar spaces not provided with space heating.

b)Cable ties used for fixing of single-core cables must be dimensioned to withstand short circuit electro-dynamic forces.

c)Where cargo gases or vapours are liable to damage the cable ties, careful consideration shall be given to the characteristics

of the materials selected.

1.3Requirements of identification of product type with certificate

The product is to be provided with visible marking, giving at least the following information:

Manufacturer's name or trade mark - Type designation.

The marking is to be carried out in such a way that it is visible, legible and indelible throughout the anticipated life of the product, and that the marks can be traced back to the type approval certificate. For smaller products, marking on packing only can be accepted.

1.4Test requirements

Please refer to table of tests chapter 2 and IEC62275.

1.4.1How to pick out test samples

The DNV surveyor at responsible approval centre shall normally pick out test samples.

According to IEC62275 each test shall be carried out on a new set of 10 cable ties.

The type testing shall be carried out on specimens or products

representative of the production. (the smallest and the largest size in product range, and 1 size in between).