DNVGL-CP-0165 Cable And Pipe Penetrations
CLASS PROGRAMMEType approvalDNVGL-CP-0165Edition February 2016Cable and pipe penetrationsThe electronic pdf version of this document, available free of chargefrom http://www.dnvgl.com, is the officially binding version.DNV GL AS
FOREWORDDNV GL class programmes contain procedural and technical requirements including acceptancecriteria for obtaining and retaining certificates for objects and organisations related toclassification. DNV GL AS February 2016Any comments may be sent by e-mail to rules@dnvgl.comThis service document has been prepared based on available knowledge, technology and/or information at the time of issuance of thisdocument. The use of this document by others than DNV GL is at the user's sole risk. DNV GL does not accept any liability or responsibilityfor loss or damages resulting from any use of this document.
Changes - currentCHANGES – CURRENTThis is a new document.Class programme — DNVGL-CP-0165. Edition February 2016Page 3Cable and pipe penetrationsDNV GL AS
Changes – current. 3Section 1 General. 51 Introduction.52 Documentation.6Section 2 Technical requirements. 81 Design requirements.82 Design guidelines. 83 Fire test requirements. 104 Watertightness and gastightness. 135 Watertightness and gastightness - special cases.156 Text in certificate. 17Appendix A Extract from IMO RESOLUTION MSC.307(88) (2010 FTP Code),Annex 1, Part 3 - Test for “A”, “B” and “F” class division, Appendix 2, A.III –Pipe and Duct Penetrations. 18Appendix B Extract from IMO RESOLUTION MSC.307(88) (2010 FTP Code),Annex 1, Part 3 - Test for “A”, “B” and “F” class divisions, Appendix 2, A.IV –Cable Transits. 20Changes – historic. 23Class programme — DNVGL-CP-0165. Edition February 2016Page 4Cable and pipe penetrationsDNV GL ASContentsCONTENTS
Section 1SECTION 1 GENERAL1 Introduction1.1 ObjectiveThe objective of this class programme (CP) is to give a description of the type approval of cable and pipepenetrations.For a description of the the Society's type approval scheme in general and further information on generalconditions and procedures for obtaining the Society's type approval certificate, see the Society's documentDNVGL CP 0338 Type approval scheme.The procedures and requirements described in this CP are applicable for obtaining the Society's type approval(TA) certificate based on requirements in:————DNV GL rules for classification of ships RU SHIP Pt.4 Ch.6 Sec.3 [1.4.6] (pipe penetrations)DNV GL rules for classification of ships RU SHIP Pt.4 Ch.8 Sec.1 Table 4 (cable penetrations)SOLAS 74, Issue 2014, Chapter II-2, Regulation 9IMO RESOLUTION MSC.307(88) (2010 FTP Code), Annex 1, Part 3 - Test for “A”, “B” and “F” classdivisions.1.2 ScopeThis CP gives a description of the procedures and requirements related to documentation, design and typetesting applicable for TA of cable and pipe penetrations with regard to fire safety, including watertightnessand gastightness for class “A” penetrations. The conditions outlined in this CP shall be fulfilled before a typeapproval certificate is issued.1.3 ApplicationDNV GL rules for classification of ships RU SHIP Pt.4 Ch.8 Sec.1 Table 4 and RU SHIP Pt.4 Ch.6 Sec.3 [1.4.6]require that cable and pipe penetrations are type approved by the Society, and TA in accordance with this CPis thus mandatory for equipment to be installed on vessels classed with the Society.A TA certificate in accordance with this CP will confirm compliance with the requirements in the Society'srules as specified in [1.1].A TA is not required if the pipe penetration is made of steel or equivalent material having a thickness of 3mm or greater and a length of not less than 900 mm (preferably 450 mm on each side of the division), andno openings. Such penetrations shall be suitably insulated by extension of the insulation at the same level ofthe division.Initial TA certificates shall not be issued on the basis of test reports which are more than 5 years old at thedate of application for type approval. If the type approval depends on several test reports with differentdates, the date of the oldest report governs. However, renewal of existing type approval certificates withoutretesting may be carried out provided that the test report is not more than 15 years old and that noalteration of components or construction has been made to the product.Class programme — DNVGL-CP-0165. Edition February 2016Page 5Cable and pipe penetrationsDNV GL AS
Table 1 DefinitionsTermDefinitionpenetrationSame meaning as “sealing system”. Consist of a metal frame respectively case or conduitsleeve, the sealing material (sealing compounds, packing modules or plugs) the insulationand additional auxiliary means possibly required.auxiliary meansAuxiliary means are materials used for packing the open ends of the penetration device(cable or pipe-exit openings). They serve the purpose of ensuring the tightness andminimum spacing between the cables/pipes and penetration casing required for filling thesealing compound.packing and plug systemsPacking and plug systems are modular systems. Packing systems consist of a compressionframe, packing modules, anchorage and intermediate plates, and a terminal seal withcompression screw. Plug systems normally consist of a conduit sleeve and a sealing plugfor sealing of the conduit at both ends.sealing compoundsSealing compounds are products which have a good flow capability, consisting of one ormore components. When cured, the compound forms the sealing element of the sealingsystem.sealing compound systemsSealing compound systems are sealing systems realised by means of sealing compounds.They generally consist of the conduit sleeve, the auxiliary means for sealing the ends andmaintaining the spacing and the sealing compound.injection mouldingsInjection mouldings are products for sealing of internal voids in the penetrations.sleeveMould, frame, box, coaming etc. in which the cables/pipes runs through.2 DocumentationFor TA of Cable and Pipe Penetrations the following documentation shall be submitted:— application for TA— drawings and technical specifications of the sealing system components including material specificationand service range— in case of sealing compounds, a manufacturer's declaration concerning the compatibility of the sealingsystem with the cables as described in Sec.2 [2.6]— drawings of the test setup and of the sealing system itself including specification of type and cross sectionof the cables, dimensions and material of the pipes and their supports, the dimensions of the pipes(length, outer diameter and wall thickness), distance between cables/pipes, distance between cable/pipe and the sleeve, the length of sleeve and the insulation design. Furthermore a copy of the approveddrawing of the division applicable for the fire tests— in case that also the approval of the sealing system for water and gas tight bulkheads has been appliedfor, additional drawings of the test bench set up for the tests specified in Sec.2 [4] shall be submitted— fire test reports issued by IMO recognised test laboratory including insulation drawings of the cable and/orpipe penetration as tested— optionally pressure test reports. Pressure tests shall be witnessed and the test reports shall be endorsedrespectively stamped by the the Society's representative— a manufacturer’s declaration concerning asbestos-free compliance of all relevant components of thesealing system shall be submitted.Class programme — DNVGL-CP-0165. Edition February 2016Page 6Cable and pipe penetrationsDNV GL ASSection 11.4 Definitions
Class programme — DNVGL-CP-0165. Edition February 2016Section 1— for TA of new products a sample of the penetration shall, when requested by the Society, be sent forevaluation— report from initial assessment.Page 7Cable and pipe penetrationsDNV GL AS
Section 2SECTION 2 TECHNICAL REQUIREMENTS1 Design requirementsThe product shall be designed to comply with the following rules and regulations:1)2)3)4)5)6)SOLAS Reg. II-2/9.3.1IMO 2010 FTP Code Part 3IMO MSC/Circ.1120IMO MSC.1/Circ.1488Asbestos free according to SOLAS Reg. II-1/3-5.Applicable parts of this CP.2 Design guidelinesPenetrations shall not inadmissibly impair the strength, tightness and fire resistance of the hull structure.They shall be of sufficient mechanical strength and be protected against corrosion.Penetrations shall not be made with visible openings (to avoid passage of smoke, etc.). Further, thepenetrations shall be made in such a way that ship movement, vibrations, room over-and under pressures,small impacts etc. not will cause stuffing/blocking materials to fall out of the penetration and leave visibleopenings. In practice, this means that loosely fitted stuffing/blocking materials not will be acceptable. Suchmaterials shall therefore be fixed by adhesion, locking devices, tool mounted restraints, or similar.With regard to the fire behaviour and water tightness, sealing systems shall meet the requirements given inSec.2. The mechanical loads and temperatures occurring under operating conditions and temperatures shallnot interfere with the tightness capability of the sealing system.Employed materials for production of sealing compounds, packing modules and sealing plugs shall be suitablefor the specified maximal operating temperatures.Only complete systems including any auxiliary means can be approved. Approval of individual components isnot part of this CP.Penetrations in structural divisions shall not impair the structural strength of the division. The structuralmake-up of the penetration shall be fully described so that its use and the need for additional stiffening forthe division can be fully assessed.Loose mineral wool/insulation material (around and between cables/pipes) shall be retained by wire mesh orequivalent.2.1 Compound and injection mouldings2.1.1 Application and expansion behaviourSealing compounds shall remain flowable and workable for a sufficient period, and their expansion behaviourshall be as follows:— minimum expansion after 24 hrs. 0.5%— maximum expansion after 28 days 1%.2.1.2 Curing timeSealing compounds and or injection mouldings shall set within 24 hrs. and within a period not exceeding 30days shall be sufficiently cured to ensure that a constant weight is attained.Sealing compounds and injection mouldings together with the auxiliary means used, shall be so constructedthat the curing of the compound within the stated period is ensured.Class programme — DNVGL-CP-0165. Edition February 2016Page 8Cable and pipe penetrationsDNV GL AS
2.2 Packing and plug systemsPacking and plug systems shall have the following properties:— packing and plug systems shall be simple to fit— packing modules and plugs with suitably graded diameters matched to the ship's cable and outer pipediameters shall be available— packing modules shall have sufficient elasticity to ensure durable sealing action— they shall be water-resistant— plugs shall be marked with manufacturer's trade mark, type of material, type designation and size— intermediate and anchor plates of non-magnetic materials shall be used when laying single-core ACcables.2.3 Auxiliary meansIt shall be ensured by appropriate auxiliary means that a minimum spacing, as specified by the manufacturerand as tested, is maintained between individual cables/pipes, and between the cables/pipes and the casing ofthe penetration.Auxiliary means shall be proved in combination with the components used in the sealing system (e.g. sealingcompound).Auxiliary means shall not restrict the space for the sealing compound necessary for ensuring the tight-nesscapability.Auxiliary means shall be part of the penetration during the fire test. Examples of auxiliary means:————packing material/insulating compoundsputtyintermediate layers of all kindsexpansion elements.2.4 Other sealing systemsApart from the sealing compound, injection mould and packing systems referred to above, systems usingfoams or other materials may be employed for cable and pipe penetration systems, provided they complywith the requirements given in [1] and [3].2.5 Additional evaluation and testing for penetrations of non-conventionaldesignsReference is made to IMO MSC.1/Circ.1488.“A”-class pipe penetrations and cable transits that are:1)2)3)constructed without structural sleeves of minimum 3 mm thickness and minimum 60 mm length weldedor bolted to the division; and/orconstructed with removable, soft or intumescent filling material;are “those types of constructions which do not utilize conventional components of horizontal and verticaldivisions” and shall be subject to additional testing and/or design criteria as described below.Additional testing/design criteria:Filling materials shall be adequately secured by bonded materials or mechanical means that cannot beremoved without the use of tools in order to prevent damage by normal ship vibrations and pressures.Class programme — DNVGL-CP-0165. Edition February 2016Page 9Cable and pipe penetrationsDNV GL ASSection 22.1.3 Water absorptionCured sealing compounds respectively injection mouldings shall not be hygroscopic, and shall not crack, swellor dissolve under the action of water.
Sealing systems, including the auxiliary means employed, shall be compatible with the cables used, i.e. thecables shall not undergo any inadmissible changes affecting, for example, their swelling behaviour or causingembrittlement, corrosion sheath decomposition or premature ageing.Parts of sealing systems coming into direct contact with the cables shall be chemically approximately neutral(pH range: 6.5 – 8.5).Where no special specifications are laid down for the cables, compatibility shall be ensured at least withregard to cables manufactured in accordance with the following standards:Standards:IEC 92-350IEC 92-360IEC 92-353IEC 92-376JIS 3410DIN 89158, 89159, 89160.3 Fire test requirements3.1 General requirementsPenetrations shall be tested containing either cables or pipes. Penetrations containing both cables and pipesshall be avoided.Testing for bulkhead is recommended with the insulated side not exposed to the fire, and for deck theinsulated side is recommended to be tested exposed to the fire.Testing of “A-0” penetrations is recommendedto be performed in uninsulated “A-0” deck/bulkhead.Testing of “A-0” penetrations in “A-60” bulkheads with the bulkhead insulation on the non-exposed sidemay be accepted if there is minimum 200 mm uninsulated area around the penetration on both sides of thebulkhead. The test setup shall be submitted to the Society for verification before testing.Any insulation used on and around the penetration during fire test, shall be kept there also when used indivisions with lower rating than fire tested. As an example: If the penetration is tested as A-60 penetration,any insulation fitted on the penetration itself, including the area 200 mm around it, will be required fitted alsofor penetrations in “A-0”, “A-15“ and “A-30” class divisions.“A-0” cable and pipe penetrations shall not be approved without an “A-0” test although tested and approvedas ”A-60”.Uninsulated metallic pipes penetrating “A” or “B” class divisions shall be of materials having a meltingtemperature which exceeds 950 C for “A-0” and 850 C for “B-0” class divisions (ref. SOLAS 74/78, Reg.9.3– 2014 issue).Bolted penetrations: Bolted penetration shall be tested. Approved bolted penetrations may also be fullywelded instead of bolting (tack welding is not accepted).Cable and pipe penetrations intended for use in aluminium divisions shall be tested in aluminium divisions. Asingle test in an aluminium deck or bulkhead may be accepted for approval in both deck and bulkhead basedon an evaluation by the test laboratory, provided that complete tests have already been performed in steelbulkhead and -deck for the same product.Performance criteria are including integrity and insulation criteria. The insulation criteria are given at the endof this CP, see extract of the FTP Code 2010. For “A-0” penetrations the integrity criterion is relevant.Class programme — DNVGL-CP-0165. Edition February 2016Page 10Cable and pipe penetrationsDNV GL ASSection 22.6 Compatibility of cables
The general construction of the test specimen for divisions of type “A” is specified in 2010 FTP Code, Annex 1,Part 3 - Test for “A”, “B” and “F” class divisions, Appendix 2, A.IV – Cable Transits.The penetrations shall be tested in maximum and minimum size in both deck and bulkhead. Both rectangularand circular penetrations, if applicable, shall be tested in both maximum and minimum sizes. Thepenetrations shall be tested with maximum filling. In addition the largest rectangular penetrations (providedthat the surface area of the largest circular penetration is equal or less) shall be tested with minimum filling.We accept a test without any cables for minimum filling.In cases where insulation is fitted to the cable(s), the distance(s) of 500 50 mm to which the cableshall project shall be taken from the end of the insulation as this is considered an integral part of thepenetration(s) being tested and it is necessary that a length of unprotected cable is exposed to the furnace.If any penetration protrudes less than 25 mm into unexposed side, two thermocouples shall still be fastenedto the penetration, either on the sides or at the end (The thermocouples shall as far as possible be fastenedto the steel parts of the penetration).A range of different types of cables (i.e. in terms of number and type of conductor, type of sheathing, type ofinsulation material, size) shall be used, see Table 1.3.2.1 Selection of cablesDifferent cable types and cross sections representative of those normally used on board ships shall be chosenfor the tests.The following aspects shall be observed:————insulation material (e.g. EPR, XLPE, PVC)material of outer sheath (e.g. CR, PVC, SHF1 or SHF2)cross section and number of cores of each cablebraided screen armouring.Test specimens shall be furnished as listed in Table 1.Where this is not possible, comparable cabling shall be agreed on with the Society.In the case of bulkhead penetrations the cables shall be so positioned in the penetration that the largediameters are at the bottom, while the small diameters are at the top.If approval of a cable bundle is sought, the maximum size of the bundle (in terms of diameter) intended tobe used shall be tested.The ends of the cables introduced shall be sealed on the side not exposed to the fire, so that air or smoke willbe prevented from passing through.Following a conditioning period for sealing compounds of at least 30 days at room temperature, thepenetrations to be tested will be subjected to the fire test.Table 1 Example of the test occupation for cabling of bulkhead and deck penetrations for the firetest and for verifying water- and gas tightnessCable-TypeNo. of Cores Cross Secti
penetration Same meaning as “sealing system”. Consist of a metal frame respectively case or conduit sleeve, the sealing material (sealing compounds, packing modules or plugs) the insulation and additional auxiliary means possibly required. auxiliary means Auxiliary means are materials used for packing
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