En 12079 (Mar 1999) Offshore Container

8/14/2019 En 12079 (Mar 1999) Offshore Container

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EUROPE N STANDARDNORME EUROPEENNEEURC)P SCHE NORM March 1999ICS 55.180.10

English versionOffshore containers Design construction, testing, inspectionand marking

Conteneurs pow utilisation en rner Conception,construction, -is. inspeetionel marquage Offshore-Cytainer Bemessung Konstnrktlon. P a n g ,Ubenvachungund Kennzeidrnung

Thls European Standard was approved by CEN on 13February1999.ENmembers are bound to comply with theCENlCUJELEC lntemal Regulations which stipulate the oonditlonsfor giving this EuropeanStandard the status ofa national standard withoutany alteration. Up-to-date lists and bibllogtaphical references concerningsu h nationalstandards may be obtained on applwlron lo the Cenlral Secretariat or .to anyCEN member.

This European Standard exlsts Inthree official versions (English. French, German).A version n any other language madebytranslationunder the responsibility01 a CEN member into its own language and notified o the Central Secretariat has thesame status asthe offidalversionsCEN members are the nabonaJstanaards bodiesof Austria. Belgium. Czech Republic. Denmark, Finhnd, France, Gennany, Greece.Iceland. Ireland. Ilaty.Luxembourg. Netherlands. Norway. Portugal. Spain, Sweden, Switzerland and UnitedKingdom

EUROPEAN COM- FOR STANDARDIZATIONCOM lT t EUROPEEN DE NORhiALlSATIONE U R O P ~ ~ ~ S C H E SOS~ITEE FOR N O R M U N G

Central secretariat: rue de Stassart 36 8 1050 Brussels

999 CEN All rights of expbiiar~onn any form and by any means resewedworldwide for CEN national Members. Ref. No EN12079:1999 E


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PageEN 120 7.9:1999Contents PageForeword..................................................... ........................... .................................31 Scope ...................................................... .........................................................................4

Normative references.................................................... ...................................................4

4 Symbols .............................................................................. ...............................................65 Design ............................................................................... . ............... ....................7 Type testing ........................................................................... ........................ ............... 9 a8.Production... ......... . ....... ......... . . . . . . . . ..... .. . . . . . ..................... 219 Marking ........................................................................................................................ 5

.10 Plating of containers................................. ..... ........... ............ .............. ..........2611 Certificate of conformity ...................... .................................................................... 812 Periodic exam ination, tests and repairs ...................................... ..............................30Annexe A (informative) Recommended knowledge and experience of staff responsible forinspection of offshore con tainers............... ...... ........................................................... 34

.Annex B Guidance on pre-tnp inspections......................................................................... 35Annex C (informative) Bibliography....... - - - .............................................. ........ 6

List of tablesCharpy impact test temperature-Structural steel for primary structural m embersChemical com position (ladle analysis)Mechanical propemesAlluminium alloys and tempers for rolled productsAlluminium alloys and tempers for extruded productsDocumentation of materialsNon-desrructive examination ( NDE) of structural weldsNumber of containers required for lifting testSchedule of examination and tests


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Page 3EN 12079:1999ForewordThis European Standard has been prepared by Technical Committee ENlT 280 Offshorecontainers , the secretaria t of which is held by BSLThis European Standard shall be given the shtus of a national standard, either by publicationof in identical text or b y endorsement, at the latest by September 1999,and conflictingnational standards shall be withdrawn at the latest by September 1999.According to the CEN CENELEC Internal Regulations the national standards organizationsof the following countries are bound to implement t is European Standard: Austria Belgium,Czech Republic, Denmark, Finland France Germany, Greece celand, Ireland, ItalyLuxembourg, Netherlands, Norway Portugal, Spain, Sweden, Switzerland and the nitedKingdom.


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ageEN 120 7 9:19991 copeThis standard specifies transport related requirements for the design, construction andmarking of offshore freight and service containers with maximum gross mass not exceeding25000 kg intended for repeated use to, from and between offshore installations a nd ships. Itestablishes a system for plating of offshore containers, linked to a defined schem e fo r periodicexam inatio n and test and introduces a requirement fo r pre-trip iqspection of offshorecontainers.Guidance as to the knowledge and experience, required by those responsible for canying outinspe ction s in relation to the system of periodic inspections specified in this standard, is givenin annex ARequirements for the lifting set and for non-transport related requirements, relating tooffshore service containers, e.g. requirements for installation and use, are outsid e the scopeof the standard.

Normative referencesThis ~ u r o ~ e a ntandard incorporates by dated or undated reference, provisions from otherpublications. These normative references are cited at the appropriate places in the text and thepublications are listed hereafter. For dated references, subsequent amendments to o r revisionsof any of these publications apply to this European Standard only when incorporated in it byamendment or revision. For undated references the latest edition of the publication referred toapplies.

Approval testing of welders usion weldin? -Part SteelsApproval resting of welders usion welding art 2 Aluminium andaluminium alloysSpecification and qualification of welding procedures for metallic materials-Pan General rules for fusion weldingSpccific;ltion and approval of welding procedures for metallic materials-Pm 2 Welding procedure specification for arc weldingSpcificalion and approval of welding procedures for metallic materials-an 3 Welding procedure tests for the arc welding of steelsSpccification and approval of welding procedures for metallic rnaterials-Pan 4 Welding procedure tests for the arc welding of aluminium and itsalloys

N 970 Non-des~mctive xamination of fusion welds Visual examinationEN 1011-1 Welding Reeommendations for welding of metalic materials art :General guidance for arc weldingprEN 1011-2 Recommendations for welding of metalic materials art 2 Guidance forfemtic steelsEN 10002-1 Metallic materials Tensile testing art 1: Method of test (at ambienttemperature)EN 10025 Hot-rolled products of non-alloy structural steels-Technical delivery conditionsprEN 10250-2 Open die steel forgings for general engineering purposes art :Non-alloyquality and special steelsprEN 10250-3 Open die steel forgings for general engineering purposes -Part 3: Low alloyspecial steelsEN 10113- Hot-rolled products in weldable fine g a i n structural steels art 1 Generaldelivery conditionsEN 10113 2 Hot-rolied products in weldable fine grain structural steels art 2 Deliveryconditions for normalizedlnormalized rolled steels


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Page 5N 12079:1999

EN 10113 3 Hot-rolled products in weldable fine grain structural steels art 3 :Deliveryconditions for thermomechanical rolled steelsEN 1 2 4 Metallic products Types of inspection docum entsEN 10045 1 Me tallic materials Charpy impact test Part 1 Test methodEN I S 0 9002 Quality systems Model for quality assurance in production, installation andservicing (I S0 9002: 1994)EN 45004 General criteria for the operation of various types of bodies performinginspectionsIS0 209-1 Wrought aluminium and aluminium alloys Chem ical composition and formsof products drt 1 ChemicaI compositionI S 0 1161 Series 1 freight containers omer fittings pecificationIS0 1496-1 Series I freight containers pecification and testing-Part 1: General cargocontainers for general purposesIS0 1496-3 Series freight containers pecification and testing art 3: Tankcontainers for liquids, gases and pressurized dry ulkIS0 1496 4 Series 1 freight containers pecification and testing art 4: Nonpressurized containers for dry ulk

DefinitionsFor the purposes of this standard, the following definitions apply:3 1 offs ho re container: portable unit for repeated use in the transport of goods orequipment, handled in open seas to, from and between fixed and/or floating installations andships.

NOTE: he unit incorporates permanently installed equipment for lifting and handlingand may include equipment for filling, emptying, cooling, heating, etc.3.2 pe rm an en t equip me nt: equipm ent that is attached to the container and which is not. cargo.

NOTE:This may include, e.g. lifting sets, refrigeration units, shelves, securing points,garbage compactors.3 3 primary structure: Load carrying and supporting frames and load carrying panels.Primary structure is divided into two subgroups:

3 1 Essential nd non-redundant primary structure main structural elements whichtransfer th e cargo load to the crane hook( i.e. forming the load path from thepayload to the lifting sling) and will include, at least:top and bottom s ide railstop and bottom end railscomer postspad eyes.although other primary structuremay also be considered as essential non-redundant.3 3 2 Non-essential primary structure other structural elements for which the mainfunction is other than that described in 3.3.1 e.g. floor plates and protective framemem bers. Side and roof panels, including corrugated panels, are not considered to bepart of the primary structure.


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Page 7EN 12079 1999

forces are indicated thus Rg, Tg and Pg the units of which are in newton s o r m ultiplesthereof.. . ...The design air temperature, i.e. a minimum reference temperature used for theselection of steel grades used in offshore containers and equipment expressedin degrees centigrade;The von Mises equivalent stress, expressed in MPa QE N/mrn2 ;The specified minimum yield stress, expre ssMih.. .: MPa or ~ r n r n ~

. . ,.~.I. .,JPI.. At . . .?..? yesign

GeneralAn offshore container shall have sufficient strength to aUow Ioading and unloading fromsupply vessels offshore operating in a sea state with significant wave heights of m and towithstand impact from heavy seas.

NOTE ocal impacts, e.g. from hitting other deck cargo or rigid parts of the shipstructure. may cause exaeme loads in such conditions.To prevent the containers from overturning (tipping) on a moving deck, they shall bedesigned to wirhstand tilting at 3 O in any direction, without overturning when loaded t itsmaximum gross mass, with the centre of gravity consiaered to be at the half height .of thecontainer.Protruding parts on the outside of the offshore container that may catch other containers orstruciures shall be avoided. Protruding parts (doors handles, hatch cleats, etc.) shall be soplaced or so protected that they do not catch the lifting set.Where containers are designed for stacking, and the lifting set hangs over the side of the topframe they shall be fitted with a method of protection for those exposed parts e.g. cornersraised to sufficient height above the frame and roof to prevent unintentional contact, with anddamage to, the lifting set

.-. .-@?Containers sh all be designed as structural frames (primary@fucture), with non-load bearingcladding where necessary (secondary structure). Only the primary structure shall beconsidered in the design calculations; however, on certain types of containers, e.g. wasteskips with trapezium shaped siQes, with only a non-stressed cover above the bracing where

the pad eyes are attached, the whole structure may be considered as a primary structure, andthe design calculations may treat such a container as a monocoque construction.TD hall not be higher than the (statistically) lowest daily mean tem perature f or the areawhere the o ffshore container is to operate and in no case shall be higher than 20C.NOTE: or containers with exposed aluminium, the danger of sparks caused by the impact ofaluminium against corroded steel (the thermite reaction) should be taken into account.


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PageEN 1B7-9: 9995 2 tructuralstrength5.2.1 GeneralThe required suength of container shall be determined by calculation and verified by typetests, as described in clause 7.

5.2.2.1For design loads defined in 5.2.2.2 and 5.2.2.3, no equivalen t stres s level, oe hallexceed the figure as calculated as oe 0.85 C, wherefor steel;for luminium

Base material C = ,2 for alumir?ium outside the hea t affec ted zone.Heat affected zone = 0 7 Rwhere R is the tensile strength of luminiumis 0.8 for SOAlMg4,5Mn-HARlAA5083H329 ee table 4

is 0,7 for all other ~ lum ini um lloys nd tempers5 2 2 2 Lifnng wit lifting setThe design force on the primary structure shall be calculated as 2 sRg.To achieve this the internal load shall be taken as 2,5R T)g evenly distributed over thecontainer floor. For tank containers, the att ha l distribution of the tare ma ss sh all be used forthe calculations.Pad eyes shall be designed for total vertical force of Rg.The force shall be considered to be evenly distributed,.A,.. between (n 1) pad eyes where n is theactu al number of pad eyes.

. .. ..

To determine the resulting sling force on the p d eyes, the sling angle shall be taken intoaccount, so th t the resulting sling force on each p d eye is calculated as follows:

F = 3R(n - ) coswhere F s the resulting sling force, in newtons;n is the actual number of p d eyes (for calculation purposes n shallnot exceed 4 and shail be not less than 2);

v is the angle between a sling leg and the vertical, in degrees andshall be .assumed to be 45 for design purposes with IS0 10containers. For lengths less than 10 . v should be defined differentlyby arrangement between the purchaser / manufacturer.NOTE: For containers with only one p d eye, that p d eye sh ll b e designed fortot l vertical force of 5 Rg.


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age 9EN 12079 999

5 2 2 3 Lifting with ork li r truckThe design force on the primary structure shall be calculated as 1,6RgTo achieve this the internal load .shall be taken as 1,6R T g evenly distributed over thecontainer floor.Where fork pockets are intended only for hancUing of the empty container, the design loadshall be taken as 1,6Tg.5 2 3 Impact loads5 2 3 1 GeneralImpact loads are dynamic lo.ads of very short duration. Ideally, dynamic calculations or testsshould be carried ou t to verify the ability of a container to withstand such loads . However,for most applications it shall be sufficient to carry out simplified static calculations sspecified in 5.2.3.2 and 5.2.3.3 and to perform a drop test for vertical impact on comers, inaccordance with 7 4When simplified calculations are used, and each be m is considered separately, anyassumptions concerning support conditions shall be stated.5 2 3 2 Hori ontal impactThe main frame structure shall be dimensioned to withstand a local horizontal impact forceacting at any point. This force may act in any horizontal direction on the comer post. .On llother frame members in the sides the load may be considered as acting at right angles to theside.The calculated static equivalent) stresses due to impact shall be com bined with the liftingstresses resulting from static lifting forces Rg).Equivalent stresses shall not exceed:

r C see 5.2.2.I )The following vaIues shall be used for the .static equivalen ts to an impact force:

For con tainer posts and side rails of the bottom structure: - 0 25 RgFor other frame members of the side structure, including the top rails:- 0,15 RgMaximum calculated deflections at these loadings shall not exceed:

For comer posts and bottom side railswhere

1 is the total length of the rail or post in mrn


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PageEN 12079:1999

NOTE: he thicknesses may have to be increased beyond these values to take accountof special considerations such as rating, design, corrosion allowances, the need forimpact tests of the material, etc.

5 3 WeldingEssential and non-redundant primary structural members shall be we lded with full penetrationwelds. For o ther primary structure, the use of fillet welds shall be justified by design appraisalincluding calculations and consideration of failure modes)..Interm ittent fillet welding of secondary structure is acceptable, howev er care shall b e taken toavoid corrosion.5 4 dditional design details5 4 1 FloorCon tainers liab le to fill with water, e.g. open topped, shall have a suitable drainage facility.5 4 2 oors and hatchesDoo rs and hatches, inch ding hinges and locking devices, shall be designed for at least thesame horizontal forces as the primary structure. Locking devices shall be secure againstopening of the doors during transport and lifting. Double doors shall have at least one suchlock ing dev ice on each door, locking directly to the top and bottom frame.

,

Locking arrangements shall be protected to prevent dislodgement by impact.~ i n g e shall be protected against damage from impact loads.Doors shall be capable of being secured in the open position.If weathertightness is required, the doors shall be equipped with seals.5 4 3 Intermediate cargo decksWhen intermediate cargo decks are fitted they shall be designed to withstand a force of atleast 0 5Pg Y uniformly distributed.where Y is the dynamic factor = 3).When intennediatd cargo decks are designed to support other than half the total payload, thed e s i ~ nequirement shall be calculated accordingly.5 4 4 Internal se uring pointsContainers for general cargo shall have internal securing points. Each shall be designed towithstan d a force of at least 1 W.Note: A minimum of 12are generally required.


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Page 2EN 12 79:19995 4 5 ork 8pocketsWh en fitted, fork lift pockets shall be installed in the bottom structure and shall have aclosed bottom and top, and pass through the base (see 9.1).

NOTE 1: Special requirements apply for fork pockets on tank containers fordangerous cargoes; see S . 3 .NOTE : Partial bottom openings may be dlo we d provided the ope nings are of sucha size and located s o that it is not possible for the fork tines to penetrate or seize in theopening, or to damage th e free ed ges a t the cut-out.The minimum opening of the fork lift pockets shall be 200mm 90 mm.Fork lift pockets shall be located such that the container is stable during handling and drivingwith fork lift truck. Container length, height, width and rating sha ll be taken in to account.Pockets shall be located as far apart as practicable but need not be more than 2050 mm apartfrom the cenue of pocket to centre of pocket.f a container is fitted with pockets that are only for empty handling, the conta iner shall bemarked according to 9 1

5 4 6 Pad eyesIn order to prevent lateral bending moments on pad eyes, they shall be aligned with the slingto the centre of lift, with a maximum manufacturing tolerance of +. 2 5 OAny difference in the diagonal measurements between lifting point centres shall not exceed0 3 of the length of the diagonal, or 5 mrn, whichever is the greater.The diameter of holes in pad eyes shall match the shackle used, tolerances between shacklebolt and pad eye hole diameter shall not exceed 6 of the nominal shackle bolt diameter.However, maximum concentrated m es se s at the hole edges shaIl be below proof stress, Re, a tdesign load.The tolerance between pad eye thickness and inside width of sh ackle shall not exceed 25 ofthe inside width of the shackle.Pad eyes sh ll be s o designed as to permit free movement of the shackle and sling terminationwithout fouling the pad eye.Pad eyes shall not protrude outside the boundaries of the container, and shall as far aspossible be designed to avoid damage from other containers. Lifting points shall bepositioned on the container to preclude, as fa r s practicable, the risk of slings fouling againstthe container or its cargo during normal use.Pad eyes shall be welded to the frame with full penetration welds. f the lifting force istransferred through the thickness of a plate having a thickness greater than 25mm lates withspecified through thickness properties shall be used.Kote: Where ISO-corner fittings are mounted in conjunction with pad eyes. the comerfittings a re not intended for lifting with slings offshore.


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age 3N 12 79:1999

Where ISO-corner fittings are mounted to offshore freight containers they sh ll conform toIS0 1161NOTE ifting offshore with shackles in these comer fittings is not accep table.

5 4 8 quipmentEquipment on offshore containers s h d be designed and installed to withstand the dynamicloading and ,other environmental forces to which it may be exposed.The following factors shall be used:Dynamic factor load factor) Y=

Design factor against breaking safety factor) s 2NOTE: Equipment permanently installed on a container is considered to be part of thecontainer for certification purposes.

Any external connections. e g a supply of pressurized air, or an electricd connection, shall beprotected against damage.5 4 9 Coating and corrosion protectionOffshore containers sh;lll be suitable for the offshore environment by means of construction,use of suitable mat tri l and/or corrosion and paint protection.All offshore contnlner roofs. including those consrructed from cheques plate, shall be coatedwith a permanent non-slip medium.5 5 Tank containers5 5 1 GeneralIn addition to compty~ngwith other relevant design codes and requirements, t nk containersshall be su itable for offshore service.5 5 2 FrameIn addition.to the design requirements already specified in this standard, the fr me shall bedesign ed to protect thc ~ a n k nd equipment valves. man-holes, etc.).5 5 3 Tanksforflui sTank design shall conform to the relevant sections of IS0 1496 3.Tanks for dangerous cargoes shall fulfil the requireinenp of the IM G Code, and shall bedesign ed according to a recognized code for pressure vessels. A tank and its suppo rt shall beable to withstand lifting and impact loads. In addition due account shall be t ken of fluidsurge arising from partly filled tanks.


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Page 4EN 12 073 1999NOTE: IMDG have restrictions for loaded handling of tanks of ov er a certain length,by fork-lift. Reference should be made to Ch apt er 13 of the IMDG code.5 5 4 Impact protection on tank containersf r dangerous cargoesOn tank containers for dangerous cargoes, all parts of the tank and fittings shall be suitablyprotected from impact damage. In add ition Eto the requirements of 5.2.3 the followingrequirements apply:

The top of the tank and its fittings shall be protected by beams, pl tes or grating andno part of the tank or its fittings shall ex t ~ndo within 100mm f the top of thefrarnework.It shall not be possible for ny part of the lifting set to foul fittings, manhole cleats orothe r protrusions on the tank.Protective beams shall be placed at or ne ar the location where the tank shell is nearestto the outer plane of the sides. Beams. sh ll be spaced sufficiently close together togive the necessary protection.At the maximum calculated elastic deflection of ny side member, the residualclearance between the member and any part of the tank shell or its fittings shall be atleast 10mmNo part of the underside of the tank 'shell (including sumps), the bottom valves orother fittings. shall extend below a level 150rnm above the bottom of the frameworkAny such part extending to within 300 mm of the bottom of the framework, shall beprotected by beams or plating.

Tank containers designed with direct connection between the tank and the side or top frameelements shall be subject to special consideration.5 6 ontuinersforbulksolidsBulk containers shall be designed according to the relevant sections of IS0 1496 3 orI S 0 1 4 9 6 4 but shall in addition be suitable for offshore service.

NOTE: These may be either pressurized tanks or non-pressurized containers forgravity discharge.

6 1 Steel generalThe chemical composition, heat treatment, weldability, mechanical properties and impactene rgy propenies shall, be suitable for the purpose. Extra high sbength steels, with proofstress above 500 Nfmrn-, shall not be used.When materials of different galvanic potential are joined together, the design shall be suchtha t ga lvanic corrosion is avoided.


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Page 15EN 12 79: 999

Welding consumables shall be according to EN 1011-1 Recommendations for welding ofmetallic materials art 1 General guidance and prEN 1011-2 Recornendations for weldingof metallic materials Part 2:Guidance for ferriti steelsTensile testing shaU be carried out according to EN 10002-1.In order to avoid initiation of brittle fracture, the steels shall possess adequate fracture energy.Steels for primary structures shall be tested by the harpy impact V-notch) methodaccording to EN 10045-1.Test temperatures shall be as given in table 1~ a b i e: harpy impact t st temperature Structural steel for primary structuralmembers

The average energy absorption for base material specimens with their axis parallel to the finalrolling direction shall not be less than given in figure 1. For specimens with their axistransverse to the final rolling direction the valve shall be two thirds of that for longitudinallyorientated specimens.

Materid thickness (t)inm m

t 1 1 21 2 c t s 2 5t>25

Specified proof suess in ~ l r n r n

hpac t test temperatureinC

TD1 10TDTD 20

.

Figure 1 harpy V notch, values for steel


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Page 16EN 1207 9 1999

Impact energy in welds or in the longitudinal direction in heat affected zones shall be not lessthan 7 J at test temperature (table 1 .6 2 Rolled st ls in offshore container structures6 2 1 General requirementsW here required, steels for welding shall be made by either open hearth, electric furnace orthe basic oxygen steel process. Steels in the primary structure shall be killed and fine graintreated. Only materials with non-ageing properties sh ll be used.6 2 2 Groups of steelsStructural steels for the primary structure shall be carbon steel, carbon-manganese steel,carbon-m anganese m icro-a lloyed steel or low-alloyed steel.For suuctural members. material grades specified in EN 10025 andlor EN 10113 which meetthe requirements in 6.1 and 6.2.1 shall be used.

6 2 3 Steel orgingsWhen required forged carbon, and carbon-manganese steels shall be used in the offshorecontainer structureSuch forgings shall hc mddc from fully-killed and fine-grain treated non-ageing steel.

NOTE: may hr necessary to verify the non-ageing properties by tests.For chemical and mechanical properties of alloy steels, reference shall be made to prEN10250-2 Open dic stccl forgings for general engineering purposes. Part 2: Non-alloy qualityand special steels.and t prEN 10250-3 Open die steel forgings for general engineeringpurposes. Part :Low lloy special steels. The chemical composition shall be suitable for thethickness in question. Alloy steels shall be delivered in quenched and tempered condition.Th e impact test temperature shall be equal to the design air temperature,TD see 4 and 5.1).6 2 4 s teel castings n ISO cornerjittingsThe tensi le stre gth of ISO-com er fittings (see 5.4.7 made from cast steel shall be not lessthan 440 Nlrnrn- and the proof stress shall be not less than 220 ~/ r n r n2 .The chemical composition shall be in accordance with that set out in table 2 and mechanicalproperties shall be in accordance with table 3


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. . .Table 2 Chemical composition ladle analysis)

Page 17EN 12 79:1999

Table 3 Mechanical properties.A

Chemical omposition

The chemical composition. heat treatment weldability and mechanical properties shall besuitab le for the purpose.

MechanicaI properties

When ~nilterials f different ~ al va n ic otential are joined together the design shall be suchthat gaivanic corrosion is avolded.

Cum x

Aluminium alloys used in offshore containers shall be made by rolling or extruding.Alu min ium alloys and temperCspecified in table and 5 may be used. Use of other alloys ortempers shall be subject to special consideration.

Pmar SmaxCm x

lmpacr EnergyYIJoule)min at 20C27

Yield strengthR H[N/mm2]mi11220

Mom x

Average value on 3 ISO V otch impact specimen s acc.to UR W2. One individual valuem a y be below the average value but s h l l not be lower than 70 of the average.

The carbon equivalent shall not exceed 0,452 Aluminium m y be replacedpartly or totally by other fine graining elem ents as stated in theapproved specifications

0 OSCrmar

n

Tensile strengthRm~lv/rnrn ]

43 to 600

A 1min0 035Nimax0,20

Sirnax 0 2 0Cr+iVi+Cu+ Mo

m r0 015035

ElongalionAsI lmin25

0 7090to1so

Reduction ofareaZ[ ] min40

0 2 0 0 25 0,30


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age 18EN 12 79:1999Table 4: Aluminium alloys and tempers for rolled products

Table 5: Aluminium alloys and tempers for extruded products

TemperIS I AA

0 1 0HAR H32HBR H34HCR I H360 1 0HAR I332HBR H340 0HAR H32HBR H341HAR H3HBR H340IHAR / H3H R H340 1 0HAR H32HBR H341TB T 4TE T5TF T6

IS0 209 1AlMg 2 5

m g

AlM g 3 5

AlMg 4

AlMg 3 Mn

AlMg 4 5 Mn

AlSiMgMn

NOTE AA = American Aluminium

Non metallic materials

These references are included for informationas usen may encounterthese references in practice.

AlloyAA5052

-5754

5154

5086

5454

5083

6082

Association.

Timber plywood fibre reinforced plastics and other non-metalIic materials shall not be usedin primary structures.

TemperIS0 AATB T 4TF T6TF T6

Alloy

NOTE:Consideration should be given to strength durability suitability and possiblehazards caused by use of these materials.

NOTE:AA = American Aluminium Association.These references re ncluded for inf6rmation as users m y encounter hese references in prac6cc.

IS 209 1iSi 0 5 Mg

AlSiMgMn .AA

6063

6082


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Page IN 12079: 1999

6 5 :Material inspection documentsMaterials used for the construction of offshore containers shall be furnished withdocumentation in accordance with cable 6 All materials for primary structures shall beidentifiab le against the certificates.

Table 6: Docum entation of materials

7 Type testing

Structure

ISOcorner tirringsPod eyes

7 1 GeneralAny change of design. specification of material and method of manufacture outside normalmanufacrurin~ olerances. which may lead to a modification of the mechanical propertiesdefined n t h ~ s tandard. shall require that the relevant type tests are c ed out on themodified container.XOTE 1: ype tests demonstrate that offshore containers certified as conforming tothe requirements of this standard possess the mechanical properties specified. Thepurpose of these tests is to prove the design, material and method of manufacture.

Documentation according to EN 1 2 4

A container selected for type testing shall be representative of the production units and not ahand built p re-production development container. It shall be built in conformity with plansand darn and using tooling comparable to those planned for subsequent production.The tests described in 7 3 and 7 4 are required for all offshore container types. and shall beconsidered s design requirements.NOTE : Type testing may not replace design review, but may in cenain cases be ap-mird substitute for strength calculations. Non-destructive e-xamination NDE) aybe required after testing.

Test report 2 2

X

Inspection ce~ificate3 1 C

XX

O ~ h e r r imq sinrmnlmembersScco ndq S I ~ I C I ~ I I ~ ~ ~members

The test mr\sses shall normally be evenly distributed inside the conta iner. If i t is not possibIeto place all the t sr mass inside the container, some of it may be placed outside or under thecontainer. p ro\.idetl that this gives loading on the structure similar to the distribution of thecon tiliner Inndi 112 n operating condition.

Inspection certificate3 B

X


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Page 2EN 12079:1999If the container has an additional cargo d ec k the test load shall be evenly divided between thefloor and the additional deck see 5 4 3 If the additional dec k is removable it will benecessary to carry out the test with the test load divided between the additional deck and thefloor as well as with th e whole test load on the floor.

Test equipment and verification7 2 1 GeneralThe force shall be applied using calibrated weights and lifting the container by a liftingappliance or by means of a suitable test rig

Lifting test7 3 1 GeneralThe container shall be lifted by a lifting set with an angle to the vertical equal to the designangle. The lifting set normally fitted to the container shall not be used.The container shall be carefully lifted in such a way that no significant acceleration forcesoccur. It shall be held fo r 5 minutes before m easuremen ts are taken.

The container shall be oaded to a total gross mass of 2 5 R and lifted using all the pad eyes.NOTE: he test load may be obtained by putting in an internal test mass of 2 5 R-T.No deflection; during testing shall be greater than 1/300 of the span of the member. Theoffshore container shall show no perm anent deformation or.other damage after testing.7 3 3 Two point liftingAn offshore contain er fitted with four pad eyes shall also be lifted from only two pad eyes.situated diagonally opposite each other with a total mass of 1,s R.NOTE:This can be achieved by putting in an internal test m ass of 1 5R T.After the test there shall be no permanent deformation.7 4 Vertical impact t stThe container with its internal test mass corresponding to payload P shall be e ither loweredor dropped on to a workshop floor of concrete or other rigid structure.NOTE 1: This floor may be covered with a sheathing of wooden planks with athickness not exceeding 50 mm.

NOTE 2: If the container is lowered from a crane the suspending wire and hook may..dampen the impact compared to a free-fall drop test. Therefore the impact speedshould be greater if a lowering test is used.n both cases the container shall be so inclined that each of the bottom side and end railsconn ected to the lowest comer forms an angle of not less than 5 with the floor.


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Page 21EN 12 79:1999

How ever, the greatest height difference between the high est and lowest point of the undersideof the con tainer corners need not be more than 400 mrn.The impacting comer shall be the one expected to have the lowest rigidity.NOT 3: On closed dry cargo containers this will normally be at the door end.N o signiijcan t permanent damage shall occur.NOT : Cracks in welds and minor deformations may be repaired.One of the following procedures shall be carried ou t

a Drop testAn internal loud equal to the payload (P) shall be safely secu red and the container shall beinclined as described above.The container shall be suspended from a quick release hook. When released, the containershall dro p freely for at Ieast 50 mnl to give it a speed at initial impact of at least mls.b) Lowering testAn internal loud equal to the paylodd (P) shall be safely secured and the container shall beinclined s described above.The container shall be lowered to th floor at a constant speed of not less than j nls

NOT : WARNIXG These tests may cause considerable tremors in the buildingOthe r tests

When required other t sts shall be carried out for containers of unusual configuration. Theseshall be agreed in advance with the certifying body.Tanks for clangerous cargoes shall in addition be tested according to the requirements of theIheIDG Code.

ProductionGeneral

Production shall be performed according to approved drawings, specifications andprocedures.Production documents according to this standard shall be prepared and approved beforeproduction starts.The mnnukrcturer shall ensure the quality of his procedures and facilities through operation ofa quality assurance system at least i n accordance with EN I S 0 9002


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age 22EN 12 79 19998 2 Primary structure8 2 1 GeneralDuring production-and on the finished product it shall be possible to identify the materialsused for the primary structure and linkthem with the correspond ing documentation.8.2.2 Approved weldersWelders shall be approved in accordance with EN 287

Approved welding procedures shall be used for the welding to be carried out on the primarys m m e .Preliminary welding procedure specifications shall form the basis for the preparation ofwelding procedure tests.Welding procedu re specifications welding procedure tests and approval of weldingprocedures shall be in accordance with relevant clauses of EN 288 and with the requirementsstated below .Impact tests are required as part of the welding procedure tests. Test temperatures and testresults shall com ply with the requirem ents given in 6 1 including table 1. For t 1 2 mm foursets of impact tests shall be made: on e set in the weld metal one set at the usion line one setin the heat affected zone HAZ) 2 rnm away from fusion line and one set 5 mrn away fromfusion line.8 2 4 Inspection o welds8 2 4 1 GeneraWelds shall be subject to visual inspection for primary and secondary structures and othernon-destructive examination NDE)or primary structureVisual inspection shall be performed as described in EN 970.Other NDE methods shall be. chosen with due regard to the conditions influencing thesensitivity of the methods. Unless otherwise agreed structural welds shall be ex mined asstipulated in columns I to V in table 7 with those in columns JII and V being employed inthe event that such is required and practicable.The percentages specified in table 7 shall apply to the total length of weld for the type ofstructural assembly in question.When fuel gas welding is applied ultrasonic and.magnetic particle examination shall berequired in addition to radiog raphic examination.


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.Table 7: Non destructive examination NDE) f structur l welds

Page 3EN 12079:1999

8 2 3 2 Non destructive examination NDE)procedures and N E operators

Category ofmemb er

Primary A:Essential/Non-redundant

Primary B:Other

Secondary

Proc edure sp ecifications for NDE-methods shall be established and followed.NDE operators shall be capable of performing a satisfactory operational test under productionconditions using a qualified procedure appropriate for the NDE method and welded joints inquestion.

J

NOTE: Documentation of adequate competence based on recognized qualificationschemes may be required.

I Dye penenant examination shall be used where magnetic particle examination is not possible.2 Depending on material thickness and possibility.NOTE: The categories applicable to the structural members shall be agreed with the certifyingbody in each case.

Type ofjoint

Butt weldsT-jointsButt weldsT-joints/ -fillet weldsAll types

The NDE operators shall issue reports describing the weld quality. he reports shalldistinguish clearly between accepted and rejected welds, and the number of repairs carried outto meet the specified acceptance standard shall be stated. The inspection report shall specifythe NDE methods and procedures and include all NDE-parameters necessary for a properassessment.8.2.4.3 Weld acceprance criteri

Typeof examination

The soundness of welded joints shall conform to the recognized standard regulations orrelevant rules for acceptability of weld imperfections.

IVisualexamination

1100100

100100

D[Magneticparticleexam ination )

2

lo

2

mU l m o n i cexamination2)

1

1002020

TVRadiographicexamination

10

10


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Page 24EN 12 79:1999

8 3 Secondary structureThe fabrication procedure shall reflect the requirement that the secondary structure shaIlprevent cargo rom falling out of the offshore container and if required, prevent water fromentering.The welding of the secondary structure shall be according to EN 288

8.4 Production testing8 4 1 Lifh ng testuring the production of a batch of o ffshore containers, some, selected at ra ndom, shall esubmitted to the all-point lifting test described in 7.3.2 and shall meet all specifiedrequirements.

The number of containers to be tested sha ll be agreed in advance and is depend ent on the totalnumber in the production series. Table 8 shall be used to determine the minim um number ofcontainers to be tested which shall include the container which was type tested.Table 8: Number of containers required for lifting test

8 4 2 Weatherproofness esting

Total number in series1 56 1 0 .

2021 402 40

f a type of offshore container is specified to be weatherproof, the following weatherproofnesstests shall be canied out.

Number to e tested11

34

10

For the prototype and 10 of the containers in a production series, the test shall b e carriedou t in accordance with the weatherproofness test specified in I S 0 1496 1.

)The quantity given includes the container which was type tested.

For the remaining containers, the water test may be replaced by a simple light test for whichthe inspector shall procede as follows:


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Page 5N 12 79:1999

Enter the container, require the doors t i ' b e closed closed and allow sufficient time tobecome accustomed to the darkness (at least 3 minutes)..I.While a powerful light is directed at all external smfaces, examine the interior of thecontainer for light penetration

o light penetration shall be observabl$with the naked eye or with normally correctedvision.NOTE: Appropriate provision should be kade to ensure that there is no risk to the healthand safety of the inspector8 5 Failure of productioncontainers ,n he case of failure of any container to me eteither the w eld acceptance criteria (s ee 8.2.4.3)' o r the lifting test requirements (see 7 3 1 an4 8.4.1 the manufacturer shall identify the causeof failure and rectify all affected containerb. The recertified containers shall then be re-

insptt rcdmdlm t t t m ~ d .Marking

9 1 Safety markingThe tops of closed containers and the top rails of open and framed containers shall b e markedas follows:

Closed containers shall be marked wit a band of solid contrasting colour not lessthan 100mm wide round the roof perimeter; if the roof of the container is recessedbelow the top perimeter rail, a t least the top surface of the top rail shall be marked.Open and framed containers, shall be marked with hatching in a contrasting colour onthe top rails.

Where a container is fitted with fork pockets designed for handling the container only whenempty e.g. on som e tanks and long baskets) then the words Empty lift only sha ll be clearlydisplayed near each set of fork pockets in characters not Iess than 50 mm high.NOTE: Aluminium containers may need to be specially marked to warn of the dangerof sparking (see 5.1 . The recommended marking is 'ALUMINIUM CONTAINER' onall fou r sides in letters at l'east 75 mm high.

9 2 dentificationmarkingsEach container shall be marked with a container number issued by the owner as a uniqueidentification which shall be the common cross-reference on all in-service certification,shipping d ocumentation, etc.The container number shall be prominently displayed on all sides of the container ( as viewedfrom ground leve l) in characters of a contrasting colour, not less than 75 mm high.NOTE :For open sided containers it may be necessary to attach panels specifically tocarry the container number.


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age 26EN 1207 9 999If a container has a roof, the container number shall be displayed on the rooi in characters300 mm high or more.Where character size is restricted by the available space they should beas large as practicable. The marking sh ll be carried out in such a way as to avoid incorrectinterpretation (e.g. by underlining).Where applicable the lower edge of the marking shall bepositioned near the side of th e container in which th e d oor is located.NOTE 2: In exceptional circumstances the owner may change the container numberand re-mark the container accordingly. In this case t lk inspection plate should bereplaced (clause 10) and the certificate of conformity revised (clause 11

InformationmarkingsOn ea ch container a matt black squ are not less than 4 ~m x 400 mm sh ll be provided forinformation markings such as destination, cargo hazard,..etc. This shall be located o n o ne door

: where fitted) or on the side of a container w ithout doors.NOTE:When the owner is a leasing or r e n t4 company, the words "On hire to ...,...may appear across the top to identify the user. ;Imm ediately below the matt black square the maxidum gross mass, the tare mass, and thepayload (in kilograms) shall be displayed in charac ters of a con trasting colour no t less th n50 mm high. ,

, ,

Any additional marking for electrical hazard classific,~aone.g. Zone marking), including theletter symbol for earth connection, shall be displayed in this location.f a container is used to transport dangerous goods, the requirements of the lMDG code

regard ing hazard warning labels shall be followed.:9 4 Other markings .

If the con tainer is fitted with n intermediate deck the eayload o f the deck shall be displayedon th e inside of the container in a position w here it is'clearly visible at all times, in charactersof a contras ting colour not less than 50 mm high.The user of the container may add additional information marking such as owners name, etc.However, to avoid misinterpretation additional marking shall be kept to a m inimum.

Plat ing of conta ined10.1 GeneralCo ntain ers shall be fitted with plates carry ing the informa tion specified in 10.2 and 10.3.Where two plates are employed, they shall be termed 'the information plate' and 'theinspec tion plare'.Th e data may be combined onto a single plate, termed OFFSHORECONTAINER DATAPLATE' but shall still carry all the information specified in 10.2 and 10.3Plates shall be made of corrosion resistant material securely attached externally in a mannerdesigned to avoid unauthorized or accidental removal. The plates shall be fitted to a door, or,on containers with no doors, in a prominent position.


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Page 7N 12 79:1999

Aluminium rivets have been found to be unsuitable as a fixing method in the offshoreenvironment and shall not be used.The inform ation on the plates shall be in the English language.

NOTE: Provision for an additional language may be made.The text shall be permanently and legibly marked on the plates in ch r cters not less than4 rnm in height.103 Information plateThe plate shall be headed

OFFSHORE CONTAINER DATA PLATE EN 12 79The p late shall contain the following information:

fabricator's serial number,maximum gross mass in kilograms, at the design sling angle;tare mass in kilograms;p y oad n kilograms and intermed iate deck payload (if applicable);cenificate number;design temperature.NOTE: A recommended format for the plate is shown in figure 2.

I OFFSHORE CONTAINER DATA PLATEFabrica[~on oMaximum pros\ 5. kg at .are mnsa kgPay oad Container kglntcrrnediate de k kgCe~l i f ica~cet

Design tempcrarurc CFigure : Information plate

10 3 Inspection plateThe plate shall be headed:OFFSHORE CONTAINER WSPECTION DATAThe plate shaII contain the follow ing inforrnation:

owner's container number (see 9.2 ;owner's name and international telephone num ber(s);date of last inspec tion.T o avoid confusion, the plate shall not carry the date of the next inspec tion. Provision shall bemade on the plate to facilitate permanent marking to record a minimum of nine inspections.


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Page 8EN 1207 9 1999NOTE: recommended fo rma t for the plate is shown in figure 3.OFFSHORE CONTAINER JHSPECTIONDATA

Container no :

Tel:

Inspections:

Figure 3: Inspection plate10.4 D at e of last inspectionThis shall be the date on w hich the most recent inspection was carried out to the satisfactionof the a competent person.Together with the date, the following shall also be permanently marked. Either:su ix T; indicating proof load test, nondestructive examination, and visualexamination; or

suffix VN; indicating non-destructive examination and visual examination; orsuffix V; indicating visual examination only; and the unique identification mark ofthe competent person.

The inspection schedule shall e as laid down in 12.2.1.10.5 Marking on t he plateThe plate shall be marked permanently immediately after the inspection is carried out.NOTE: Containers with less than 30 days currency of certification should not beshipped to any offshore installation, except by prior agreement with the shipper.

11 Certificateof copfonnity11 1 GeneralAll containers to be used offshore shall be issued with a certificate of conformity to thisstandard.


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.

The certificate shall be retained by the owner.Page 9

N 12079:1999

In addition. certificates of examination and tests shall be issued as described in 11 2Containers. which are required to com ply with the requirements of t h e M D G code, sh ll alsobe certified in accordance with the IM G code.Each container shall have i t . own fabrication number.

11 2 DocumentationThe certificate of conformity shall be based on the following documentation collated n an asbuilt dossier. which shall be retained by the fabrica tor for at le st five ye rs

structural calculationsdrawings including a general a rrangement drawingspecifications for welding proce dures WPS)welders certificatesmaterial inspection docume ntsreport on traceability of materialsreport from fabrication inspectionreport from dimensional co ntrolreport from non-destructive exam ination NDE)repon from prototype testingreport from proof testingreport from final inspectionNote/ I t is ~rcornmendedh t information from the as built dossier th t is not consideredcommercially sensitive should be copied to the owner who should retain it for the fif e of thecontainer.


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Page 3EN 1 207 9:199911.3 Contents of the certificate of conformityThe certifica te of conformity shall contain the following information:Con tainer fabrication number.The Certificate number.Description of the container including:external dimensions;number of lifting points;name of fabricator;monthlyear of fabrication;maximum gross mass in kilograms;tare mass in kilograms:payload in kilograms;reference to the as built dossier;rhe total gross mass in kilogram s applicable to the all points lifting test

see 7 - 3 2 ] and the actual method o r test;angle of lifting set legs from vertical ;shackle bolt diameter:Conformity to other requirements and/or codesA statement that the container described has been designed, fabricated and tested inaccordanc e with EN 12079Remarks.Signature on behalf of the certifying body.12 Periodic examination, tests and repairs

Th e ,owner or his appointed represeniative shall retain the current certification for each. container. arranse for periodic inspection, record su bstan tial repairs, mod ifications o r changesin identifica tion etc.. and maintain adequate records to ensure the traceability of equipm ent.All periodic examinations and tests shall e carried out by an inspection body meeting therequirements of EN 45004NOTE: Guidance as to the recommended knowledge arid experience of staffresponsible for inspections or the purposes of schedule 7 2 of EN 45004 are given inannex A.he inspection body shall refer to the certificate of conformity and the las t inspectiori reportbefore carry ins out n periodic examina tion or test.

12 2 Inspection, test and repairs on the container12 2 1Schedule o exarninatio~a nd testsContaine rs shall be periodically examined and tested in accordance with the sch edule listed ntable 9.NOTE: he inspection body may require other or additional tests and exam ination s.When the schedule requires lifting test, the non-destructive examination and thoroughvisual exanlination shall both be carried out after the lifting test.


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Page 3EN 12 79:1999

Table : Schedule of examinationand tests

12.2.2 Lifting testTh e lifting test shalI be carried out as describe@ :in .3.1 and 7.3.2.The container shall show no significant permanent deformations or other d m ge afrer thetest.

Time orinterval

InitialcertificationAt intervals notexceeding 12monthsAt intervals notexceeding 60months5 years)Aftersubstantialrepair oralteration

12 2 3 Non-destructive exuminption NDE)o weldsThe NDE of welds on pad eyes,and adjoining structures shall be carried out according tocolumn I1of table7

A substantial repair or alteration me ns ny repair andlor alterationcanied out, whichmay, in the opinion of an inspection body, affect the primary elements of he offshorecontainer, or elements which contribute direcfly to its structural integrity.

TestExamination

NOTE: Alternative or additional examination according to colum n or may berequired by the inspection body.The inspection methods and the quality of the welds shall be described by the NDE operatorand included in the inspection report.

Suffix o bemarked o nplate 10.4)TT orVN orVTorVN

Thoroughvisual,examinationes

Yes

Yes

Yes

Lifting test

Yest the discretionof the inspectionbody

At the discretionof the inspectionbodyYes

Non-destructiveexq ina t ionWE of padeye3YesAt the discretionof the inspectionY

Yes

Yes


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Page 32EN 12 79 199912 2 4 Thorough visual examination12 2 4 1 GeneralThe thorough visual examination shall be of the exterior and the interior of the container toensure that the container is fit for its intended use. l l load bearing parts especially the basestructure shall e examined.The examination s h d be carried ou t in a situation providing sufficient Lighting and otherfacilities necessary to allow the examination to be carried out safely nd effectively. Thefacility shall include a suitable means of lifting and supporting the container for the purposesof in specting the under-side.12 2 4 2 MarkingsThe markings and plates shall be checked to ensure that they meet the requirements of thisstandard.12 2 4 3 WeldsWelds in the primary structure shall be visually examined to ensure freedom from visibledefects.12 2 4 4 Pad eyes and lashing pointsAll pad eyes and lashing points shall be visually examined for dkton ion, mechanical damageor any other sign of distress or overload.12 2 4 5 StructureThe structure shall be visually examined for corrosion, mechanical damage or injuriousdeformation.12 2 4 6 Door closuresDoors, frames, seals, hinges ocks etc shall be visually examined and functionally checked toensure that they operate in a satisfactorymanner without undue force being required.12 2 4 7 FloorThe floor shall be visually examined to check that it is not deformed and that it shows nosigns of distress or overload. Drainage facilities, where fitted shall be examined, e.g. drainholes shall be clear of debris.12 2 5 arking of the inspection plateOn satisfactory completion of the examinition and/or test s), the plate shall be marked asspecified in table 9.


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.12 2 6 Inspection report

Page 33EN 12 79 :I999

W hen, in the opinion of the inspector, a co ntainer is suitable for service an inspection reportshall be issued. This report shall show the follow ing in form ation as a minimum):containeridentification (including owner s contain er num ber);owner s nam e, or deIegated nominee;certifica te number;the total gross mass in kilograms applicable to the all points lifting test and themethod of test (where relevant);deta ils of NDE carried out (where relevant);a statement that the container described was thoroughly examined and that theparticulars are conect;reference, where appropriate, to any report issued to the owner arising from thetest/inspection process;confirma tion that the Inspection P late was marked; date of examination (date ofsignature or report also to be show n if different from da te of examination);nam e of organization and the signa ture and unique identification mark of the personcarrying out the examination;Any defect o r deviation from the requirements of this stan dard shall be recordedTh e report, signed by h e inspector, shall be issued to the owner.

NOTE 1: Details of the examination of the lifting set may also be given on theInspection Report for the container.NOTE : This Report may be combined with the initial Certificate of Conformity.NOTE 3: The report may refer to the reasons for failure and ny recommendedcorrective action, or note that the container is accepted for use, but is to be kept underclose scrutiny.

12 2 7 Damage and repair proceduresThe owner shall ensure that the container is maintained in accordance with this standard.However, i the user or ny of his agents detects ny structural damage or corrosion whichmay affect the load bearing integrity of the container, they shall immediately contact theowner to make arrangements for repairs to be carried out. Adequate arrangements shall bemade f or the safe transponation of the dam aged co ntaine r to the location agreed wit by theowner.Th e containe r shall not be used until it is repaired, and inspected by an inspection body .Rep airs of the load bearing structure of a con tainer shall b e carried out in accordance wit therequirements for desi8n and manufacture of containers s et out in this standard. T he repairershall ensure the quality of these procedures and facilities by a certified quality assurancesystem at leasr in accordance with EN IS0 9002.The owner shall provide the inspection body with full details of repairs which have beencam ed out.Afte r completion of repairs, the container shall be inspected an d, where relevant, tested by theinspection body in accordance with table 8 Any mod ification will require re-certification ofh e container by a certifying body.


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age 3 4EN 12 079:1999Annexe Ainformative)Recommended knowledge and experience of staff responsible forinspection of offshore containersContainers

ith respect to containers, the inspector should have, as a minimum, a knowledge andadequate practical experience of:the statutory requirements relating to offshore containers;t e provisions of this standard;the various types of offshore containers in service;the correct methods of slinging and handling offshore containers;the loads, stresses and strains affecting containers when handled under adverse offshoreconditions. particularly those affecting lifting points;methods of testing containers;defects likely to bc found in conrainers and acceptable levels of wear, distortion anddeterioration n rcliltion lo safety in use;welding method5 nd procedures and qualifications of welders;the various methods of non-destructive examination NDE) nd a good understanding ofhow they work and thc ir limitations;the thorough visual examination as required by this standard and the signs of weakness anddefecrs to look for


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Page 5EN 12 79:1999

nnex I Guidance on pretrip inspectionsImmediately before transporting a container offshore, and before its return, the containershould be inspected by a responsible person appointed by the user.The responsible person should check the validity of the certification by reference to theinspection plate, and verify that the container, including its lifting set is free from obviousdefects rendering it unfit for use.he responsible person sh ou ld co nf ii , by signature nd date e.5 on the shipping manifest ,that the inspection has been canied out to his satisfaction.

Records of inspections should be retained by the user for a period of at least 60 days.


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age 36EN 2879: 999

Annexinformative)BibIiographyIMDG CodeUKOO

International maritime dangerous goods code.United Kingdom Offshore ptmto~s ssociationCertif~cation otes No2.7 May 1995 Offshore containers

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En 12079 (Mar 1999) Offshore Container

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