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Tool Box itu masuk kategori Equipment boxes karena memang fungsinya adalah untuk menyimpan peralatan, jadi bisa menggunakan std. DnV 2-7.1. Kemudian mengenai tebal material, jika Maximum Gross Mass kurang dari sama dengan 1000 kg, masih diperbolehkan menggunakan tebal material 4 mm.

Tanya – Ario Pradana

Dear Rekan,

Apa ada yang mengetahui tentang desain standard DNV 2-7-1, untuk mendesain tool box?? apa saja standard2nya yg harus diterapkan dalam pmbuatan tool box??

Tanggapan 1 – Sadikin, Indera

Dear Pak Ario,

Apakah yang dimaksud DNV 2.7-1 Offshore Containers? Untuk mendesign tool box perlu diperhatikan kekuatan struktur box saat lifting. Kalau pertanyaannya bisa lebih spesifik, mungkin saya bisa bantu.

Tanggapan 2 – vimala sariputera

Tambahan sedikit dari saya, mungkin perlu dipertimbangkan apakah tool box tsb termasuk dalam definisi di bawah ini? Kalau memang sesuai dengan salah satu definisi tsb, kita bisa gunakan standard dnv 2.7-1 ini, tapi kalau tidak termasuk yg di cover oleh std ini, berarti kita tidak perlu menggunakan std ini.

Tanggapan 3 – agus jaya

Pak Ario,

Sedikit sumbangan dari saya, menurut DnV 2.7-1 antara lain : 1. Primary structure (top & bottom side rails, top & bottom end rails, corner posts, pad eyes dan floor plates). 2. Secondary structure (wall, bottom, roof, panel stiffeners). Dokumen yg juga harus disiapkan yaitu drawing, design calculation dari structure, WPS & PQR, mat’l certificate, welder certificate, rencana Dimension, Max. Gross Mass, Pay Load (SWL), lifting set calculation. Perhitungan untuk design kekuatan dari tool box mengacu kepada formula yg ada di standard DnV 2-7.1. Penjelasan lebih lengkapnya ada di standard DnV 2-7.1, dimulai dari perencanaan, fabrikasi, pengujian hingga ke marking.
Dari rekan2 yg lain mungkin ada yg menambahkan lebih detail lagi dipersilahkan.

Tanggapan 4 – wahyudi rizal

Mau sedikit menambahkan dr pak Agus…yg dijelaskan dibawah tadi sudah benar.

Ada sedikit tambahan bahwa material yg digunakan untuk primary structure minimal dengan ketebalan 6 mm. Material2 untuk primary structure umumnya hrs lulus impak pd temperatur – 20 C dgn minimum 27 J.

Kebetulan tempat saya bekerja kami membuat produk dengan sertifikasi DNV 2.7-1 dan EN 12079.

Untuk perhitungan2 lengkap ada didalam buku tersebut, hingga penggunaan DNV type approved utk lifting setnya.

Mudah-mudahan berkenan dengan penjelasan saya diatas.

Tanggapan 5 – vimala sariputera

Tambahan sedikit dari saya, mungkin perlu dipertimbangkan apakah tool box tsb termasuk dalam definisi di bawah ini? Kalau memang sesuai dengan salah satu definisi tsb, kita bisa gunakan standard dnv 2.7-1 ini, tapi kalau tidak termasuk yg di cover oleh std ini, berarti kita tidak perlu menggunakan std ini.

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1.4 Definitions

1.4.1 Offshore container

An offshore container is a portable unit with a maximum gross mass not exceeding 25 000 kg, for repeated use in the transport of goods or equipment, handled in open seas, to, from or between fixed and/or floating installations and ships. An offshore container comprises permanently installed equipment, see 1.4.4.

Note:

Other permanent or loose equipment will not be covered by the certification unless specially agreed. However, supporting structure for heavy equipment, machinery, etc. will be approved according to 4.4.11.

—e-n-d—of—N-o-t-e—

Offshore containers are also defined by the requirements throughout this Standard for Certification. Refer to definitions of primary and secondary structure below and in 4.1.
Units for offshore lifting that are intended for installation and not for repeated transport are not considered to be containers. Likewise, units that do not have an outer framework with padeyes are not considered to be containers. Hence, these units are not covered by Standard for Certification 2.7-1. (See however the definition of waste skip in 1.2.2.) Many such portable units may be eligible for certification according to DNV’s Standard for Certification for Portable Offshore Units1. Offshore containers may be divided into 3 main categories:

a) Offshore freight container:

Offshore container built for the transport of goods. Examples of offshore freight containers:

— general cargo container: a closed container with doors

— cargo basket: an open top container for general or special cargo (e.g. pipes, risers)

— tank container: a container for transport of dangerous or non-dangerous fluids

— bulk container; container for transport of solids in bulk

— special container; container for transport of special cargo (e.g. garbage compactors, equipment boxes, bottle racks).

b) Offshore service container:

Offshore container built and equipped for a special service task, mainly as temporary installation. (Examples are, laboratories, workshop, stores, power plants, control stations, wireline units).

c) Offshore waste skip

An open or closed offshore container used for the storage and removal of waste. Normally constructed from flat steel plates forming the load bearing sections of the container, bracing in the form of steel profiles, e.g. channel or hollow section, being fitted horizontally around sides and ends. Waste skips may be open or have loose or hinged covers.

In addition to the pad eyes for the lifting set these containers may also have side mounted lugs suitable for attachment of the lifting equipment mounted on a skip lift vehicle.

1.4.2 Freight container

Re-usable transport container, used for international traffic and designed to facilitate the carriage of goods by one or more modes of transport (including marine) without intermediate reloading.
See DNV ‘Rules for Certification of Freight Containers, 1981’. Also known as CSC Containers or ISO Containers.

1.4.3 Units for transportation offshore

Portable unit or package with a maximum gross mass not exceeding 50 000 kg, for repeated or single use with a primary service function, handled in open seas, to, from or between fixed and/or floating offshore installations and ships. Units of this type are not considered to be offshore containers.

1.4.4 Permanent equipment

Equipment that is attached to the container and which is not cargo.

Note:

May include lifting sets, additional fittings for handling and securing, filling, emptying, cooling and heating, intermediate decks, securing points, garbage compactors, etc.

Tanggapan 6 – agus jaya

Menurut pendapat saya Tool Box itu masuk kategori Equipment boxes krn memang fungsinya adalah untuk menyimpan peralatan, jadi bisa menggunakan std. DnV 2-7.1. Kemudian mengenai tebal material, jika Maximum Gross Mass kurang dari sama dengan 1000 kg, masih diperbolehkan menggunakan tebal material 4 mm.

Tanggapan 7 – syofyan sabana

Wahh mau ikutan nimbrung nehh Pak,

Untuk ISO tank vessel apakah juga mengdape standar ini, mengenai size ISO tank apakah hanya 20′ dan 40′ saja dan untuk moveble equipment ini apakah harus memiliki certificate.

Terima kasih Pak,

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