Design of Castable Cable-Transit Fire-Stops for Ships

<body topmargin=0 leftmargin=0 marginheight=0 marginwidth=0> <table cellpadding=0 cellspacing=0 border=0><tr> <td valign="top" colspan=2 height=90 BGCOLOR="#006699" TEXT="#080000" bgproperties="fixed" background="050285a1erlcgo.gif"> <div> <B>      </B><FONT SIZE="2" COLOR="#FFFFCC" FACE="Arial" ><B> </B></FONT><FONT SIZE="3" COLOR="#CC9900" FACE="Arial" ><B>FPT, Inc.</B><B> </B></FONT><FONT SIZE="3" COLOR="#FFFFCC" FACE="Arial" ><B> </B></FONT><B>        </B><FONT SIZE="4" COLOR="#FF0000" FACE="Arial" ><B>Design of Castable Cable-Transit Fire-Stops for Ships</B></FONT><FONT SIZE="1" COLOR="#FF0000" FACE="Arial" ><B> </B></FONT><B>   </B></div> <div> <B> </B><FONT SIZE="3" COLOR="#FFFFCC" FACE="Arial" ><B>   </B></FONT><FONT SIZE="3" COLOR="#CC9900" FACE="Arial" ><B> </B></FONT><FONT SIZE="4" COLOR="#CC9900" FACE="Arial Black" ><B> </B></FONT><FONT SIZE="3" COLOR="#CC9900" FACE="Arial" ><A HREF="index.htm" TARGET="_top" TITLE="Fire Protection Technologies, Inc. "><U>Home</U></A> </FONT><FONT SIZE="4" COLOR="#CC9900" FACE="Arial" ><B> </B></FONT><FONT SIZE="2" COLOR="#CC9900" FACE="Arial" > </FONT><B>   </B><B> </B>back to  <A HREF="id304.htm" TARGET="_top" TITLE="The Geaquello® System "><U><B>The Geaquello® System </B></U></A><B>  </B><B>                            </B><IMG BORDER="0" SRC="1x1.gif" HEIGHT="15" ALIGN="BOTTOM" HSPACE="0" VSPACE="0" WIDTH="15"><B>  </B><A HREF="id310.htm" TARGET="_top" TITLE="Example of Configurations for Installati"><U><B><IMG SRC="0420e0e0.gif" border=0 width="14" height="14" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></B></U></A><B>  </B></div> <div> <B>       Copyright © 2008 Fire Protection Technologies, Inc.  All rights reserved</B></div> <div> </div> </td> </tr><tr> <td valign="top" width=120 BGCOLOR="#CCCC66" TEXT="#080000" background="026d4c00dkelwi.gif"> <div> <A HREF="id310.htm" TARGET="_top" TITLE="Example of Configurations for Installati"><U><IMG SRC="0420e0e0.gif" border=0 width="14" height="14" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></U></A></div> <div> <B>Design of Castable Cable-Transit Fire-Stops for Ships</B></div> <div> <A HREF="id310.htm" TARGET="_top" TITLE="Example of Configurations for Installati"><U>Example of Configurations for Installations</U></A></div> <div> <A HREF="id321.htm" TARGET="_top" TITLE="Transit Box Design"><U>Transit Box Design</U></A></div> <div> <A HREF="id322.htm" TARGET="_top" TITLE="Determination of Material Requirements"><U>Determination of Material Requirements</U></A></div> <div> <A HREF="id323.htm" TARGET="_top" TITLE="Arrangement of Cables and Transit Boxes"><U>Arrangement of Cables and Transit Boxes</U></A></div> <div> <A HREF="id324.htm" TARGET="_top" TITLE="Construction of Penetration Firestops"><U>Construction of Penetration Firestops</U></A></div> <div> <A HREF="id327.htm" TARGET="_top" TITLE="Example of Typical Dimensions and Materi"><U>Example of Typical Dimensions and Material Requirements</U></A></div> <div> <IMG BORDER="0" SRC="1x1.gif" HEIGHT="14" ALIGN="BOTTOM" HSPACE="0" VSPACE="0" WIDTH="14"></div> <bR> </td> <td valign="top" height=390 BGCOLOR="#FFFFFF" TEXT="#080000"> <div>   </div> <bR> <DIV ALIGN="LEFT"></DIV> <div> <B>Introduction</B></div> <bR> <div> These guidelines are designed to assist design and construction engineers in the preparation of cable-transit-boxes for bulkheads and decks and in specifying the material quantities required for the use of the GEAQUELLO<FONT SIZE="1" COLOR="#000000" FACE="Arial" >®</FONT> System for cable-transit fire-stops in class A-60 (1 hour fire rated) partitions of ships. </div> <bR> <div> The GEAQUELLO<FONT SIZE="1" COLOR="#000000" FACE="Arial" >®</FONT> System for fire-stops in cable-transits through decks and bulkheads has met all requirements for class A 60 fire tests and has been accepted and approved by Lloyds of London and all major maritime safety authorities throughout the world. They are applicable as long as the installations follow the given guidelines and as long as genuine GEAQUELLO<FONT SIZE="1" COLOR="#000000" FACE="Arial" >®</FONT> materials are used. Any deviations from these guidelines and alterations or substitutions of these materials will void the validity of the official approvals. The GEAQUELLO<FONT SIZE="1" COLOR="#000000" FACE="Arial" >®</FONT> fire-stop system and its components are protected by patent rights. </div> <bR> <DIV ALIGN="LEFT"></DIV> <div> <B>The Design and Preparation of Cable Transit Boxes</B></div> <bR> <div> The GEAQUELLO<FONT SIZE="1" COLOR="#000000" FACE="Arial" >®</FONT> system is not based upon prefabricated standard modules for cable-transit fire-stops (e.g. Nelson frames, etc.). Consequently, there are no restrictions on the shape and the dimensions of the transit-boxes, leaving the designer or naval architect with complete freedom of choice for his/her particular applications, space requirements and cable needs. </div> <bR> <div> <B>Required Cross Sections for Cable Transit Boxes </B></div> <bR> <div> For the determination of the opening cross sections of cable-transit boxes the following considerations apply: </div> <bR> <div> (a) <B>separation between cables</B>: 5 mm (0.2 in.) minimum, corresponding to the thickness of a swell module R312 or R380. </div> <div> (b) <B>separation between cables and transit-box wall</B>: 5 mm (0.2 in.) minimum, corresponding to the thickness of a swell module R312 or R380. </div> <bR> <div> These cable and wall separations are equivalent with a fill-area for the cables of about 30 to 40% of the total transit-box cross section. In the average, a fill-area of 35% of the box cross section can be used for calculating the required transit-box dimensions and the required amounts for swell modules R312 or R380 and sealant material E950.</div> <bR> <div> <B>B. Required Lengths for Cable-Transit Boxes</B></div> <bR> <div> It is advisable to prefabricate the desired cable-transit-boxes from stainless steel with a wall thickness of 7 to 10 mm (~9/32 to 13/32 in.) (see <A HREF="id321_figure_1a.htm" TARGET="_top" TITLE="Transit Box Design"><U>Figure 1a</U></A>) with the following lengths for:</div> <bR> <div> <B> Bulkhead penetrations:</B> 230 mm (~9 2/16 in.)</div> <div> <B> Deck penetrations:</B> 205 mm (~8 1/16 in.)</div> <bR> <div> See, for example, the shown designs for boxes with oval cross sections. For bulkhead transits, the horizontal boxes require a filling and a venting port each, made of stainless steel with an internal diameter (i.d.) of about 50 mm (2 in.), a height of about 30 mm (~1¼ in.) and a wall thickness of about 4 to 5 mm (~5/32 to 7/32 in.). The filling and venting ports should be arranged diagonally at the top of the boxes in order to allow easy and bubble-free filling of the whole ducts (see <A HREF="id321_figure_1b.htm" TARGET="_top" TITLE="Transit Box Design"><U>Figure 1b</U></A>).</div> <bR> <div> For deck penetrations no special filling or venting ports are required since in this case the vertical transit-boxes can be filled with the sealant from the top (see <A HREF="id321_figure_2.htm" TARGET="_top" TITLE="Transit Box Design"><U>Figure 2</U></A>). The insides of the transit-boxes should be clean without rust and/or grease. The insides should not be painted; however, a coat of primer with a thickness of at most 75 microns (~3 mil) will do no harm.</div> <bR> <div> The local positioning of the cable-transit-boxes has to be determined and specified in cooperation with the naval architect, shipyard design engineer or fire-safety engineer and/or electrical engineer in such a way that ample space is provided in front of both openings so that cables can be easily arranged and fitted and so that the required swell modules can be easily installed.</div> <bR> <div> A special plan or list is useful which gives the sizes and positions for all horizontal and vertical transit-boxes. These data allow one to calculate the quantities of all materials required. This cable-transit plan or list can also be used to register and date the proper completion of each cable transit.</div> <bR> <div> Copyright © 2008 Fire Protection Technologies, Inc.  All rights reserved</div> </td> </tr></table></body>