japanese | chinese  FEIC 古河電工産業電線株式会社

Reliable fire resistance created through a joint development with disaster-prevention product manufacturer Furukawa Techno Material
An easily workable, lightweight material that can be installed quickly
The familiar block installation method seen in fireproof building construction has finally been introduced as a fireproofing method for ships
  • Reliable fire resistance created through a joint development with disaster-prevention product manufacturer Furukawa Techno Material
  • An easily workable, lightweight material that can be installed quickly
  • The familiar block installation method seen in fireproof building construction has finally been introduced as a fireproofing method for ships

All Features

Rokumarine has dramatically improved the workability of shipboard cable penetrations!!

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Installation Requirements/Results

Bulkhead Installation Procedure

Deck Installation Procedure

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Ship Classes

MK

  • A-0 class
  • A-60 class

JG

  • F-457 Rokumarine Deck
  • F-458 Rokumarine Bulkhead
  • F-457 Rokumarine Deck/C
  • F-478 Rokumarine Bulkhead/C

MED

  • MED-B-8152
  • D-1473-Appendix Rev.2[B-8152]

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Q&A

Questions related to the installation process

How should I deal with the spaces between blocks?
Install the blocks in such a way that spaces do not form, compressing them as you fill in the transit.  For small spaces, press in an S-sized fireproof block. Fill very small crevices in using the fireproof sealant.
Can bundled cables be installed?
The installation of bundled cables is supported. The bundle can consist of all wire-braid armored cables, or a combination of various cable types.
Is it alright if a cable makes contact with the coaming (SGP)?
No, cables cannot touch the coaming (SGP). Perform the installation so that the cables and the coaming are separated by at least 10 mm.
Can I use water to smooth off the surface of the fireproof sealant?
The sealant is not waterproof, so avoid using any water during installation. The soft nature of the sealant enables you to easily insert and level it by hand.
Can I use the fireproof sealant instead of the support brackets for deck penetration installations?
Testing was done using the stainless-steel support brackets (wire-shaped), so prior approval for that ship class will be necessary if other construction methods will be used. There is also a chance that blocks may fall through when using other methods, so we ask that you use the support brackets.
What are the procedures for reinstallation?
First, remove the necessary portion of fireproof sealant (Image 1). The fireproof sealant will have hardened, but thin areas will be easy to remove. Next, remove the fireproof blocks and pass the cable through the transit (Image 2). Once the cable has been passed through, complete the installation in the same manner as was done initially.

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When applying the fireproof sealant, doesn't compression of the fireproof blocks alter the treatment depth?
If the fireproof blocks are packed closely together, application of the fireproof sealant will not cause any significant changes to treatment depth.

Questions related to certification details

Is installation in coaming (SGP) with a treatment depth over 100 mm possible?
RIME testing specifies a coaming (SGP) treatment depth of 100 mm, so as long as additional fireproof sealant is also applied to the portion over 100 mm it should be safe to extend the fireproof treatment depth. However, please consult the classification society in advance just to be sure.
Can this product be used with A-30?
Since the product passed A-60 testing, this is not a problem.
If this product can be used with A-30, will the length of the coaming be shorter? Or, can the fireproof sealant be done away with?
The specifications are the same as they are for A-60.
Has this product been approved as watertight/airtight?
Rokumarine has not been approved as watertight/airtight. For watertight/airtight construction methods, see Rokumarine Tight.
For deck penetrations, was consideration given to the impact of fires originating above deck?
In this case, thought was generally given to the upward effects of flames and heat caused by fires below. For stricter penetration construction methods that deal with fires below deck, IMO FTP codes are applied when certifying them as being resistant to fires above deck; at this time, Rokumarine has not yet been evaluated.

Questions related to ship classes

For what ship classes have approval been obtained (or is expected)?
NK, MED, and JG.
Are there plans to obtain approval for other ship classes?
We are considering obtaining approval for other ship classes. For the ship classes of the various countries of Europe and the Americas, check in advance whether or not the MED certification can be applied to each of those ship classes.

Questions related to storage of this product

What are the storage requirements for the fireproof sealant?
Store the sealant away from direct sunlight in a location below 40 ℃. Also, avoid storing it in a location with high humidity.
Does the fireproof sealant have a storage life?
The product should be used within six months of the date that it arrives.
How many days after the fireproof sealant is opened can it be used?
Once opened, the surface of the sealant will harden within one day and become unusable if exposed to air. If vacuum sealed, it can be used for about 2–3 days.
What are the storage requirements for the fireproof blocks?
Avoid storing the blocks in locations where they may get wet.
Do the fireproof blocks have a storage life?
There is no specified storage life, but we don't recommend long-term storage (several years).

Other questions

Are the fireproof blocks certified as a non-combustible material?
No, they are not certified as non-combustible.
Have the effects of vibration been studied for this construction method?
Minor vibrations have no effect (such as dislodging) on this product. The product has been verified to present no problems during the standard vibration testing described in JISF8006 "General requirements for vibration test of electrical apparatus for marine use."
Does the fireproof sealant have any effect on the human body?
Due to its alkaline nature, the fireproof sealant may cause some irritation of the hands. When working with the sealant, use the included polyethylene gloves. For more information, see the MSDS.
Is the support tape sold separately?
We are considering selling it separately. If you need support tape, contact us using the information found on the packaging.
Can I apply paint to the fireproof blocks?
Organic solvents may dissolve their wrapper, causing the packing material to fall apart. Please refrain from using paint.
Can I apply paint to the fireproof sealant?
Paints that contain organic solvents can cause the foam beads within the fireproof sealant to dissolve. The dissolving of the beads itself will not have any significant effect on fire resistance, but please refrain from using paint in cases where appearance is important. For any other questions, contact us using the information found on the packaging.
Is there a fireproof sealant for summer use or winter use?
Specifications for the fireproof sealant are not different for each season. In the high temperatures of summer, the sealant may dry out and harden faster. Be sure to apply it quickly after opening it.
During construction, the penetration is sometimes exposed to sunlight. Does the UV light affect the penetration?
If it is only for a few days, you can assume that there will be no effect on the penetration. However, the effect will vary due to actual conditions, so contact us in advance for a consultation using the information found on the packaging.
Can I install this product in locations which may get rained on during construction?
Because the material is not waterproof, use a sheet or similar object to protect the area around the penetration from rain. Also, use a desiccant in cases of high humidity.
Does the fireproof sealant contain asbestos?
No asbestos is used in the fireproof sealant. For more information, request an MSDS separately.
What is the density of the fireproof sealant?
About 0.85g/cm3.
After passing new wire through, can I reuse the blocks?
Yes, the blocks can be reused. However, if the blocks break apart during the reinstallation and spaces open up between the cables, insert new fireproof blocks.
Can I use vinyl tape instead of the support tape?
Because vinyl tape is not a certified material, it cannot be used. Use the support tape to fix the fireproof blocks into place.

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Watertight/Airtight Construction Method

Rokumarine Tight

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Inquiry

To contact Furukawa Industrial Co., Ltd. by phone or FAXhttp://www.furusan.co.jp/

Industry and system group
〒105-8630
Shinbashi Tokyu Building 14F, 4-21-3, Shimbashi, Minato-ku, Tokyo
TEL 03-5405-3621 FAX 03-5405-7579

Chubu Sales group
〒461-0005
Telepia Building 8F, 1-14-25 Higashi-Sakura, Higashi-ku, Nagoya City, Aichi
TEL 052-972-8990(main) FAX 052-972-8992

Kansai Sales group
〒530-0004
Furukawa Osaka Main Building 6F, 2-1-29 Dojimahama, Kita-ku, Osaka City, Osaka
TEL 06-6346-2956(main) FAX 06-6346-2959

Kyushu Sales group
〒821-0011
Nippon Life Insurance Hakata Station building 3F ,3-2-1Hakata Station-mae, Hakata-ku Fukuoka
TEL 092-483-5637(main) FAX 092-483-5610

To technical inquiry contact Furukawa Electric Industrial Cable Co., Ltd. by phone or FAXhttp://www.feic.co.jp/english/

Hiratsuka plant/Mechanical technology division
〒254-0016
5-1-9, Higashiyawata, Hiratsuka City, Kanagawa
TEL 0463-21-8290(main) FAX 0463-21-8292

To contact Furukawa Electric Industrial Cable Co., Ltd. by phone or FAXhttp://www.feic.co.jp/english/

Head Office/Strategy sales department
〒116-0014
6-48-10 Higashi-Nippori, Arakawa-ku, Tokyo
TEL 03-3803-1151(main) FAX 03-3801-0581

To contact Furukawa Electric Industrial Cable Co., Ltd. using enquiry form

Furukawa Electric Industrial Cable Co., Ltd. Enquiry Form