Bsi bs en 14025 2013 + a1 2016

A dditional symb ls used in the tex t ar ex plained in: A 1 minimum elong ation at fr actur e of the metal chosen u de tensie s r es in % di inside diamete of an o ening D internal diame

Date T x t affecte

T his British Stan ard is th UK impleme tatio of

T his s an ard is primariy inte d d as a co e for th d sig an

co s ructio of tan s f or th t ansp r of dang ro s go ds, su ject

to the prov isio s of Chapter 4.3 an 6.8 of th RID/A DR/ADN For

ins ance, EN 14 2 is a refere ce s an ard in ADR paragrap

6.8.2.6.1, and it prov isio s sh uld b re ard d as normativ e for

th se tan s, ex ce t where A DR permit th use of oth r s an ards

sp cific to dan ero s g o s to b t anspor e , e.g cryo e ic gases

an LPG

th d sign an cons ructio of UN P r able Tan s su ject to the

prov isio s of Chapter 4.2 an 6.7 of th RID/ADR/A DN an also

of the IMDG Cod It sho ld be n te that re ulatio s in Chapter

4.2 an 6.7 d n t prescrib the use of this s an ard Alternativ e

s andards are p rmit e by th UK De ar me t for Transp r f or

th se tan s

T he UK commit e adv ises user that there mig t b conflcting

prov isio s in this s an ard w ith refere ce to prov isio s in Chapter

4.2 an 6.7 of RID/A DR/A DN an th IMDG Co e User sh uld

be aware that UN P r able Tan s d sig e an co s ructe in

ac ordance with this s an ard ma n t be ac e te in al par s of

th world

T he UK par icipatio in it pre aratio w as e t us e to T ch ical

Commit e AUE/18, Tan s for th t ansp r of dan ero s g o s

A l s of organiz tions re rese te o this commit e can be

obtain d o re u s to it secretary

T his p blcatio do s n t purp r to inclu e al th n ces ary

prov isio s of a co t act User are resp nsible for it cor ect

BS EN 14 2 is o e of sev eral s an ards that mig t b use f or

th d sign an cons ructio of UN P r able Tan s su ject to the

prov isio s of Chapter 4.2 an 6.7 of th RID/ADR/A DN an also

of the IMDG Cod It sho ld be n te that re ulatio s in Chapter

4.2 an 6.7 d n t prescrib the use of this s an ard Alternativ e

s andards are p rmit e by th UK De ar me t for Transp r f or

th se tan s

National f orew ord

an LPG

BS EN 14 2 is o e of sev eral s an ards that mig t b use f or

th d sign an cons ructio of UN P r able Tan s su ject to the

prov isio s of Chapter 4.2 an 6.7 of th RID/ADR/A DN an also

of the IMDG Cod It sho ld be n te that re ulatio s in Chapter

4.2 an 6.7 d n t prescrib the use of this s an ard Alternativ e

s andards are p rmit e by th UK De ar me t for Transp r f or

th se tan s

T he UK commit e adv ises user that there mig t b conflcting

prov isio s in this s an ard w ith refere ce to prov isio s in Chapter

4.2 an 6.7 of RID/A DR/A DN an th IMDG Co e User sh uld

be aware that UN P r able Tan s d sig e an co s ructe in

ac ordance with this s an ard ma n t be ac e te in al par s of

th world

T he UK par icipatio in it pre aratio w as e t us e to T ch ical

Commit e AUE/18, Tan s for th t ansp r of dan ero s g o s

A l s of organiz tions re rese te o this commit e can be

obtain d o re u s to it secretary

T his p blcatio do s n t p rp r to inclu e al th n ces ary

prov isio s of a co t act User are resp nsible for it cor ect

ap lcation

© T he British Stan ards Ins itution 2016

P blsh d by BSI Stan ards Limite 2016

ISBN 978 0 58 8 4 1 0

ICS 13.30 ; 2 020.20

Compl a ce w ith a British Sta d rd ca not conf er immu ity f rom

le al o lgat ions

A me dme t / or r ig n a is u d since publ cat ion

T his British Stan ard w as p bl sh d u d r th auth rity of the

Stan ards P lcy an St ate y Commit e on 30 Nov emb r 2013

is w ith rawn

31 July 2016 Impleme tatio of CEN ame dme t A 1:2016

The st ar t an fi ish of text intr od c ed or alt er ed by ame dme t is

!"

in ic ate in t he t ext by t ags Tags in ic at i g chan es to C EN text c ar r y

t he n mb r of th C EN ame dme t For ex mple, t ext alt er ed by CEN

ame dme t A1 is in icate by

NORME EUROPÉENNE

Ju e 2 1

E g lish V er sion

Tanks for the transport of dang erous g oods - Metal ic

pressure tanks - Desig n and construction

Citernes des iné s au tr anspor de matièr es

dang er euses - Citernes métal q es sous pres ion -

Conc ption et fabric tion

Tan s für die Beförderu g g efährlcher Güter -

Metal sche Drucktan s - Ausleg un u d Bau

This E rope n Stan ard was ap roved b C N on 3 Aug us 201 an inclu es Amen ment 1 ap roved b C N on 29 Apri

2016

C N member are bou d to c mply with the C N/C NE E Internal Reg ulations which sip late the c n itions for g ivin this

E rope n Stan ard the satus of a national san ar d without an alteration Up-to-date lss an biblog rap ic al referenc es

c nc rnin such national san ards may be obtained on ap lc ation to the C N-C NE E Manag ement Cente or to an C N

member

This E rope n Stan ard ex iss in thre oficial ver ions (E g lish, Fr ench, German) A v er ion in an other lang uage made b

t anslation u der the responsibi ty of a C N member intoit own lang uag e an notified to the C N-C NE E Manag ement

Cente has the same satus as the oficial ver ions

C N member are the national san ards bodies of A usria, Belg ium, B lg aria, Cro tia, Cyprus, Cz ch R ep blc, Denmark, Es onia,

Finlan , Former Yug oslav R ep blc of Mac edonia, Franc e, Germany, Gre c , Hu g ary, Ic lan , Ir elan , Italy , Latvia, Lith ania,

L x embour g, Malta, Nether lan s, Nor way, Polan , Porug al, R omania, Slovakia, Slovenia, Spain, Sweden, Switz rlan , Tur key an

United K ing dom

EUR OP A N COMMIT E FOR STANDA R DIZA ION

COMITÉ EU OP EN DE NO MALISA ION

EU OPÄISCHES KOMITE FÜ NORMUNG

C N-C NE E Manag ement C ntre: Av n e Marnix 1 , B-1 0 Brus els

Contents Pag e

Eur ope n for ewor d 4

1 Sc ope 5

2 Nor mative r efer ences 5

3 Ter ms, definitions and sy mbols 7

3.1 Ter ms and definitio s 7

3.2 Symbols 7

4 Mater ials 8

4.1 Gener al 8

4.2 Compatibi ity 9

5 Design 9

5.1 Gener al 9

5.2 Minimum shel thicknes 9

5.3 Reduc tio of shel thicknes 9

5.4 Pr otection ofthe shel 10

5.5 Pr otection ofequipment 10

5.6 Othe design r eq ir ements 11

6 Calculation 11

6.1 Gener al 11

6.1.1 Gener al 11

6.1.2 Calculation sc heme for the wal thicknes ofmetalic pr es ur e tanks of RID/A DR Chapte 6.8 11

6.1.3 Calculation sc heme for the wal thicknes ofmetalic por table pr es ur e tanks of RID/A DR c hapter 6.7 12

6.2 Design c r iter ia 13

6.3 Calculation for internal pr es ur e 15

6.3.1 Gener al 15

6.3.2 Wal thic knes of the cylindr ical section 15

6.3.3 Wal thic knes of ends 15

6.3.4 Wal thicknes of co ical sectio s 19

6.3.5 Opening s and r einfor cements 21

6.3.6 Manhole co er s 28

6.3.7 Flang es, joints, bolts 33

6.4 Calculation for exter nal pr es ur e 34

6.4.1 Gener al 34

6.4.2 Tanks, wher e ex ter nal over pr es ur e is par t ofo er ating con itio s 35

6.4.3 Tanks, wher e ex ter nal over pr es ur e is not par t ofo er ating conditio s 35

6.4.4 Test 35

6.5 Tank to fr ame co nectio /inter fac e 35

7 Co str uc tio and manufac tur ing 36

7.1 Gener al r equir ements 36

7.2 Cut ing 36

7.3 F r ming 37

7.3.1 Gener al 37

7.3.2 Cold for ming 37

7.3.3 Hot for ming 37

7.3.4 Ends 37

7.3.5 He t tr eatment and nor malsing 37

7.4 Welding 38

7.4.1 Qualfication 38

7.4.2 Welded joints 38

7.4.3 Ex amination and testing ofwelds 38

7.4.4 Temp r ar y attachments 40

7.5 Manufac tur ing toler anc es 40

7.5.1 Plate alg nment 40

7.5.2 Defec ts of for m 41

7.5.3 Thicknes 41

7.5.4 Dished ends 41

7.5.5 Cylindr ic al sectio s 41

8 Repair s 42

8.1 Gener al 42

8.2 Repair ofsur fac e defec ts in the par ent metal 42

8.3 Repair ofweld defec ts 42

A nnex A (informative) S mple calculatio for tank co tainer s acc or ding to RID/A DR Chapter 6.8" 43

A 1 Intr oduc tio 43

A 2 Dimensio s, char acter istic ofmater ials, o er ating and testing co ditions 43

A 3 Calculatio acc or ding to br anc h A 44

A 4 Calculatio ac cor ding to br anch B 44

A 5 Calculatio ac or ding to br anch C 45

A 6 Calc ulatio ac or ding to br anch D 47

A 7 Results 54

A nnex B (informative) Ex plosion pr es ur e shoc k r esistant design of tanks 56

Biblog r aph 58

Eur opean forewor d

This document (EN140 5:2 1 +A 1:2 1 ) has be n pr p r d b Te h ical C mmite CEN/TC2 6

“ Tan s for the transp rt of dang erous g oods”, the se r tar iat of which is held b A FNOR

This E ro ean Standar d shal be given the s atus of a national s an ard, eithe b publcation of an

identical tex t or b endorsement, at the lates b De embe 2 16, an conflcting national s an ards

shal be with r awn at the lates b De embe 2 1

A ttention is drawn to the p s ibi ty that some of the element of this document ma be the subje t of

p tent rig ht CEN [an / r CENELEC] shal not be held r sp nsible for identifying any or al such p tent

r ight

This document includes A men ment 1 a proved b CEN on 29 A pr il 2 16

This document super sedes!EN140 5:20 3"

The s art an finish of tex t introd c d or alter d b amen ment is in icated in the tex t b tags !"

!dele ted text"

This document is submited for r fe enc into the R ID [9] an / r in the te hnical an ex es of the A DR

[1 ]

http:/ ww w.u ece.org /trans/dang er/dang r.ht m for A R an for RID at htt p:/ ww w.otif.org /en/dang

rous-g oods.htm respectively

This document has be n pr p r d un e a man ate given to CEN b the E r opean Commis ion and the

Euro ean Fr ee Trade A ssociation

A ccor ding to the CEN-CENELEC Inte nal Reg ulations, the national s an ards organizations of the

folowing cou tries ar e b u d to implement this Eur opean Standard: Aus r ia, Belg ium, Bulgaria,

Cro tia, Cyprus, Cz ch Republc, Denmark, Es onia, Finlan , F rme Yug osla R epublc of Mac donia,

Franc , Ger many, Gr ee e, Hu gary, Ic lan , Ir eland, Italy, L tvia, Lith ania, Lux emb urg, Malta,

Nethe lan s, Norway, Poland, Por tug al, Romania, Slovakia, Slo enia, Sp in, Sweden, Switz rlan ,

Turkey an the United King dom

1 Scope

This Eur opean Stan ard spe ifies the minimum r q ir ment for the desig n an cons ruction of

metal c pr es ur tan s having a max imum wor king or tes pr s ur e ex ce ding 5 k a (0,5 b r ), for the

tr ansp rt of dang erous g oods b ro d and rai an sea This E r opean Stan ard inclu es r q ir ment

for o enings, closur s an str uctural eq ipment; it does not cover r eq ir ment of se vic eq ipment

F r tan s for the transp r t of c yog enic l q ids, EN 1 5 0-1 an EN1 53 -2a ply

NOT 1 Design an construction of pres ure tank s ac ording to the s ope of this E rope n Stan ard are

primarily subject to the req irements of RID/ADR , 6.8.2.1, 6.8.3.1 an 6.8.5, as relevant In ad ition, t he relevant

req irements of R ID/ADR , columns 1 an 1 of Ta le A to chapter 3.2, 4.3 an 6.8.2.4 ap ly For the structural

eq ipment subsections 6.8.2.2 an 6.8.3.2 ap ly, as relevant T e definitions of RID/A R 1.2.1 are refer ed to For

portable tank s se also C apter 4.2 an S ct ions 6.7.2 an 6.7.3 of R ID an ADR In ad ition, the relevant

req irements of R ID/ADR , columns 1 an 1 of Ta le A to C apt er 3.2, 4.2, 6.7.2 an 6.7.3 ap ly T e parag rap

n mb r a ove relate to the 2 1 is ue of R ID/AD which are subject t o reg ular revisions T is can le d t o

temporar y non-compliances with EN 140 5 It is important to k now that req ir ements of RID/A R take

precedence ov er an clause of this stan ard

NOT 2 T is stan ard is ap lica le t o liq efied g ases inclu ing L G, howev er for a dedicated L G stan ard se

EN 1 49

If not othe wise spe ified, provisions which take up the whole width of the p ge a ply to al kin of

tan s Provisions contained in a sing le column a ply only to:

ro d an rai pr s ur e tan s ac ording to

R ID/A DR cha ter 6.8 (lef-han column);

p rta le tanks ac ording to RID/A DR cha te 6.7

(right-han column)

2 Normative references

The folowing document , in whole or in p rt, ar nor matively r fe enc d in this document an ar e

in ispensa le for it a plcation F r dated r fe enc s, only the edition cited a ples F r u dated

r fe enc s, the lates edition of ther fe enc d document (inclu ing any amen ment )a ples

EN 2 7-1, Qu lific ation te st o we lde s — Fusion welding — Part 1: Stee ls

EN 141 , Welding pe son el — Ap ro al testing o welding o e ators fr f sion welding a d r sista c

weld sete s fr flly mec ha ized a d a tomatic welding o metallic mate ials

EN 143 , No -des ructive ex mination o we lds — Radiogra hic ex mination o welded joint

EN 1 9 -1, Flan es a d their joint — Design rule s f r g sketed c irc ular flan e c on e tions — Part 1:

Calc ulation meth d

EN 1 2 4, Me tallic products - Ty es o inspec tio doc ument

EN 1 0 4:2 0 , Ta ks fr the tra sport o da ge o s g ods — Metallic ta ks with a working pr ssur

n t exceeding 0,5 b r — Design a d c onstruc tio

EN 1 4 5-2, Unired pr ssur vessels - Part 2: Mate ials

EN 1 4 5-3:20 9, Unired pr ssur vessels — Part 3: Design

EN 1 4 5-4, Unired pr ssur vessels - Part 4: Fa rication

EN 1 4 5-8, Unired pr ssur vessels - Part 8: Ad ition l r q irement fr pr ssur vessels o aluminium

a d aluminium alloys

EN ISO 3 34-1, Qu lity re quirement fr f sio we lding o metallic mate ials — Part 1: Crite ia fr the

selec tion o the a pro riate level o q ality r q irement (ISO 3834-1)

EN ISO 3 34-2, Qu lity re quirement fr f sion welding o metallic mate ials — Part 2: Compr hensive

q ality r q irement (ISO 3834-2)

EN ISO 41 6, Destruc tive tests o welds in metallic mate ials — Tra sve se tensile tes (ISO 4 136)

EN ISO 5 7 , Destruc tive tests o welds in metallic mate ials — B end tests (ISO 5173)

EN ISO 5 1 , Welding — Fusion-welded joint in s e l, nicke tita ium a d their alloys ( eam we lding

e xc luded)— Qu lity levels fr impe fec tions (ISO 5817)

EN ISO 96 6-2, Qu lificatio test o welde s — Fusion welding — Part 2: Aluminium a d aluminium alo s

(ISO 960 6-2)

EN ISO 97 2, No des ructive testing — Qu lification a d c ertific ation o ND T pe so nel (ISO 9712)

EN ISO 10 42, Welding — Arc -welded joint inaluminium a d its alloys — Qu lity leve ls fr impe fec tio s

(ISO 100 42)

EN ISO 15 0 , S ec ific atio a d q alificatio o welding proc edur s fr metallic mate ials — G ene al

rules (ISO 156 07)

ENISO 1 6 9-1, S ec ific ation a d q alific atio o welding proc edur s fr metallic mate ials — Weldin

proc edur spec ific atio — Part 1: Ar welding (ISO 156 09-1)

ENISO 1 6 9-3, S ecific ation a d q alific atio o welding procedur s fr metallic mate ials — Weldin

proc edur s spec ificatio — Part 3: Ele ctro beam welding (ISO 156 09-3)

ENISO 1 60 -4, S ec ific ation a d q alific atio o welding proc edur s fr metallic mate ials — Weldin

procedur spec ific atio — Part 4: L se beam welding (ISO 156 09-4)

ENISO 1 61 , S ecific ation a d q alification o welding proc dur s fr metallic mate ials —

Q ualific atio b sed o pr -produc tion we lding tes (ISO 15 13)

ENISO 1 614-1, S ec ific ation a d q alific atio o welding proc edur s fr metallic mate ials — Weldin

procedur test — Part 1: Ar a d g s welding o s e ls a d ar welding o nickel a d nickel allo s

(ISO 156 14-1)

ENISO 1 614-2, S ec ific ation a d q alific atio o welding proc edur s fr metallic mate ials — Weldin

proc edur test — Part 2: Ar welding o aluminium a d its alloys (ISO 156 14-2)

EN ISO 1 6 5, No -des ruc tive tes ing o we lds — G e ne al rules fr metallic mate ials (ISO 17 35)

EN ISO 1 6 7, No -destruc tive tes ing o we lds — Visual testing o fsion-welded joint (ISO 176 37)

EN ISO 1 640, No -destruc tive tesing o we lds — Ultraso ic testing — Te ch iques, tes ing levels, a d

assessment (ISO 176 40)

ISO 149 -3, Se ies 1 fr ight co taine s — S ec ification a d testing — Part 3: Ta k c ontaine s f r liq ids,

g ses a d pr ssurized dry b lk

ISO 70 5-1, Pipe flan es — Part 1: Stee l flan es fr industrial a d gene al se vic e piping systems

3 Terms, definitions and sy mbols

3.1 Ter ms and definitions

F r the purp ses of thisdocument, the folowing te m an definition a ples

3.1.1

pr es ur e-tank

tan as defined in the inte national r g ulations for the tr ansp rt of danger ous goods b ro d or r ai

having a maximum working pr es ur e or a tes pr s ur exce ding 5 k a (0,5b r)

3.2 Symbols

The folowing gene al symb ls ar used thr oug hout the tex t They ar e ls ed in alpha etical orde an

spe ial symb ls ar ex plained with the r levant formulae A dditional symb ls used in the tex t ar

ex plained in:

A

1

minimum elong ation at fr actur e of the metal chosen u de tensie s r es in %

di inside diamete of an o ening

D internal diamete of shel in mm

D

C

mean diamete of the cylin rical part of the tan at thejunction of a cone

De out ide diamete of the cylin rical p rt of the tan or the s raig ht lang e of the dished en

Di inside diamete of the cyl n rical part of

the tank or the str aight flang e of dished

minimum shel thick es for mid s e l in mm, ac ording to 6.8.2.1.18 an 6.8.2.1 of RID/A DR

e1 minimum shel thick es for the metal chosen in mm

wal thick es of a hemispher ical en

E You g 's mod lus

f

d

nominal desig n s r s ( alowable s r es )

h inside height of an el psoidal dished en

vap ur pr s ur e at 5 °C or at the desig n

temper atur , whichever is the highe ; to be

taken as the n me ical value of the

a solutepr s ur

P

vapvap ur pr s ur of the subs anc at 6 °C

(ac ording to 6.7.2.1 of R ID/A DR)

P

vapvap ur pr es ur e of the non-r fr ig erated

lq efied g as depen s on the p r table

tank type (ac ording to 6.7.3.1 of

guarante d (upper ) minimum yield str ength or g uarante d minimum 0,2 % pro f s r ng th, in

N/mm² ( or aus enitic s e l the 1 % pr oof s r eng th ma be chosen)

Re,t g uarante d (up e ) minimum yield s r ng th or guarante d minimum 0,2 % pro f s r ngth, at the

r levant desig n temper atur , in N/mm² ( or aus enitic steel the 1 % pro f s r ngth at the r levant

desig n tempe atur ma be chosen)

Rm g uarante d minimum tensiestr ength, in N/mm²

The tan shel shal be fa ricated from metal c mate ials which shal be r sis ant to br itle fractur an

of adeq ate impact s r ng th within the desig n tempe atur r ange T e mater ial shal be suitable for

forming

EN 1 4 5-2 an -8 a ply an the minimum mater ial r eq ir ement given in RID/A DR Cha te 6.8 an

Cha te 6.7 shal be fulfi ed

A luminium ma only be used for the shels of

p rta le tan s when in icated in a p rta le tan

spe ial provision as igned to a spe ific subs anc

in C lumn (1 ) of Ta le A of Cha ter 3.2 RID/A DR

or when a proved b the competent author ity

NOT 1 For aluminium an aluminium al oys, se also EN 142 6

NOT 2 RID/A R rest rict he use of materials with respect to the max imum y ield an tensile st reng th of

fine-g rained st eel for w elded shels, max imum ratios of y ield/tensile st r eng th for w elded steel shels an of t he

minimum elong ation at ract ure for w elded fine- g r ained other teel an aluminium shels

W elded shels shal be fa ricated from a mater ial which has be n shown to have ac epta le welding

char acter is ics

4.2 Compatibi ity

Shels, fit ings, an pipework shal be cons ructed from mater ialswhich ar :

a) subs antialy immu e to attack b the subs anc ( s) intended to be transp rted;or

b) pro e ly p s iv ted or neutralsed b chemical r eaction;or

c) lned with corr osion-r esis ant mater ial dir ctly b n ed to the shel or atached b eq ivalent

means

They shal comply with

Gasket shal be made of mater ials not subje t to atack b the subs anc s inten ed to be transp rted

The mater ials of the tan , inclu ing any devic s, g asket , l nings an ac es ories, shal not adversely

afe t the subs anc s inten ed to be transp rted in the tan

Guidelnes on mater ial spe ifications in r lation to the substanc s to be transp rted ma be taken fr om

A nnex B of EN1 2 5-1:2 0

5.1 Gener al

Tan s shal be desig ned to withs an without los of content the:

1) o e ating con itions inclu ing s atic an dynamic for es in nor mal con itions of carr iage In

ad ition, the desig n of porta le tan s shal ac ou t for the efe t of fatigue, caused b r peated

a plcation of theselo dsthroug h the ex pe ted lfe of the porta le tan ;

2) tes con itions;

3) !ex plosion-pr s ur -shock r sistant con ition (ifr q ir d) ( se A nnex B)";

u de conside ation of Clause 6

If su den temper atur dife enc s ar to be ex pe ted d ring fi ing or dischar g e of the tan the bucklng

efe t of onesided ex pansion or contraction should be taken into ac ou t

5.2 Minimum shel thicknes

The shel thick es shal not be les than that given in:

R ID/A DR 6.8.2.1.1 to 6.8.2.1.1 , se Fig ur 1 of

this stan ar d

RID/A DR 6.7.2.4 or 6.7.3.4, se Fig ur 2 of this

s an ard

5.3 Reduction of shel thic knes

The r d ction of the minimum shel thick es

( e Fig ur e 1) is alowed if pr ote tion of the shel

ag ains damag e thr ough late al imp ct or

overturning is provided ( e 5.4 an RID/ADR

When ad itional prote tion agains shel damage

is provided as desc ibed in 5.4, p rta le tan s

with tes pr s ur les than 2,6 b r ma have the

minimum shel thick es r d c d, in pro ortion to

6.8.2.1.19 to 6.8.2.1.2 an 6.8.2.1.2 r spe tively)

but the minimum r eq ir ment g iven in RID/A DR

6.8.2.1.17 shal be met

F r shels of rai tank wag ons no r d ction of the

minimum wal thick es d e to prote tion is

alowed

the prote tion pr ovided ( se RID/ADR 6.7.2.4.3 to

6.7.2.4.5)

5.4 Pr otection of the shel

5.4.1 W hen r q ir d b 5.3shels of:

ar prote ted ag ains damage if one of the folowing measur sis provided:

— s ructur , in which the shel is supp rted b a complete skeleton inclu ing longitudinal an

transversestr uctural membe s This s r uctur shal confor m to the r q ir ment of ISO 149 -3;

— double wal cons ruction, whe e the ag gregate thick es of the oute metal wal an the shel it elf

is not les than the minimum shel thick es pr scr ibed in:

— R ID/A DR 6.8.2.1.18 and the thick es of the

in e shel wal is not les than the minimum

shel thick es pr sc ibed in 6.8.2.1.1 ;

— RID/A DR 6.7.2.4.1 an 6.7.2.4.2 an the

thick es of the in e shel wal is not les

than the minimum shel thick es pr scr ibed

in 6.7.2.4.3 an 6.7.2.4.4;

— "san wich" cons r uction, which means shels made with double wals having an inte mediate layer

of r igid sold mater ials (e.g fo m, at leas 5 mm thick), wher e the oute wal has a thick es of at

leas 0,5mm of s e l, 0,8 mm of aluminium or 2 mm of a plas ics mate ial r infor ed with g las

fibr F r othe layer mate ials (e.g mine al wool, at leas 1 0 mm thick), the oute wal has a

thick es of at leas 0,8 mm of aus enitic s e l Othe combinations of mate ials used to pr ovide

prote tion ag ains dama e shal be shown to have eq ivalent s r ngth One method of comp r ing

the s r ng th of she t of mater ials is g iven in A nnex B of EN 1 094:2 0

5.4.2 F r shels of ro d tan vehicles se also

6.9.2of EN 1 0 4:2 0

5.5 Pr otection of equipment

Items of eq ipment shal be prote ted agains the risk of being wrenched of or damag ed d r ing

transp rt or handlng

F r tan s othe than rai tan wag ons eq ipment

shal be prote ted b s r ng thening rings,

prote tive cano ies or transverse or longitudinal

membe s This prote tion of eq ipment shal

comply with 6.14 of EN 1 0 4:2 0

Items of eq ipment of tan containe s ar e

prote ted if plac d within the contour s of a

skeleton s ructur e (r ame)

Eq ipment used on tan s of tan vehicles for the

transp rt of subs anc s to which the spe ial

provision T 1 of ADR ( e subse tion 6.8.4 A DR)

is alocated ne d ad itional prote tion

RID/A DR 6.7.2.5 an 6.7.2.6 and 6.7.3.5 a ples

also

RID/A DR 6.8.2.2 a ples also

NOT F r vacu m-o e ated waste tanks

RID/A DR 6.1 3.1 a ples

5.6 Other desig n r equir ements

Desig n c ite ia for:

— o enings; se 6.3.5.1, 6.3.5.2.1to 6.3.5.2.6, 6.3.5.3;

— en s;se 6.3.3.2 to 6.3.3.4;

— conical se tion of shel; se 6.3.4.1 an 6.3.4.2;

— hing ed man ole cover and cover as embles; se 6.3.6.5;

— flang es, joint an b lt ; se 6.3.7

NOT 1 R ID/A DR inclu e req irements on - ther mal insulation of link ag e b t w een shel an vehicle, design of

surg e plat es an part i ons,- le k pr oof lining s, thermal insulation, non- metal ic lining s, elect rical e r thing an

secure b se an lifting devices (se R ID/A R 6.7.2, 6.7.3, 6.8.2.1.2 , 6.8.2.1.24 – 6.8.2.1.2 an 6.8.5.1.5)which are

not considered in this stan ard

NOT 2 RID/A R r eq ir e that shels of portable tanks made from aluminium shal b insulated to prevent

sig nificant los of p ysical pr opert ies when subject ed t o a he t lo d of 1 0 k W/m

2

for a period of not les than 3

min an that the insulation shal remain efectiv e at al temperatures les than 6 9°C an shal b jacket ed with a

material with a melting point of not les than 7 0 °C

A dditional thick es to alow for cor r osion (progres ive de r ase of wal thick es ) shal not be taken

into consider ation in calculating the shel thick es

The calculation schemes given in Figur s 1 an 2 show how to deter mine the wal thick es of a shel to

me t the r eq ir ements of this s an ard an RID/ADR wher e Figur 1 a ples to R ID/A DR cha te 6.8

and Fig ur e 2 a ples to R ID/A DR cha te 6.7

6.1.2 Calculation s heme for the wal thicknes ofmetalic pr es ur e tanks of RID/A DR C a pter

6.8

The wal thick es chosen, shal not be les than the max imum value r sulting from the wal thick es

dete mined ac ording to branches A an B (RID/A DR 6.8.2) on the one han an ac ording to the

folowing formulae r levant to the tes and se vic con itions (branches Can D)on the othe

Fig ur e 1 — Calc ulation s heme for the wal thicknes ofmetalic pr es ur e tanks of c hapte 6.8 of

RID/A DR

6.1.3 Calculation s heme for the wal thicknes ofmetalic por table pr es ur e tanks ofRID/A DR

c hapter 6.7

The wal thick es chosen, shal not be les than the max imum value r sulting from the wal thick es

dete mined ac ording to branch B (RID/ADR 6.7.2 an 6.7.3) on the one han an ac ording to the

folowing formulae r levant to thetes an ser vic con itions (branches Can D) on the othe

Fig ur e 2 — Calc ulation sc heme for the wal thicknes ofmetalic por table pr es ur e tanks

of chapter 6.7 ofRID/A DR

6.2 Desig n c iter ia

Desig n cr iter ia (lo ds, alowable s r s es, desig n temper atur etc.) to be a pled shal be taken from

Ta les 1and 2

Table 1 — Design cr iter ia for chapter 6.8 tanks

but not les than

(pvap − 1 b r)+pdyn if ap lica le

a

ptet b

m/ 2,4}

min { 0,7 R

e

; 0,5 R

m}

fd for aust enitic ste ls

with 3 % ≤ A < 3 %

R

e,t/ 1,5

fd for aust enitic ste ls

with A ≥ 3 %

ma { Re,t / 1,5; min (Re,t / 1,2; Rm,t / 3)}

c

Design t emperature 2 °C provided that the operating

temperature of the tan is within the r ang

-2 °C to + 0 °C When the operating

temperature is outside this rang then the

design temperature shal b taken as the

ex t reme value of the operating t emperature

Temper ature at the pres ure t est

(nor maly + 0°C)

a

The dynamic forc s shal be taken into a c u t This may be done b intod cin an eq ivalent pres ure pdyn determined

on the basis of the forc s spec ified in R ID/A R 6.8.2.1 b t not les than 3 k a ( 0,3 bar ) an ad it to the vapour g aug e

pres ure (pvap – 1bar) with pvap not les than 1bar The larg es c mparment ne ds to be taken into a c u t

b

To be taken fom R ID/A DR 6.8.2.4.1

c

It ne ds to be noted that the guarante d minimum me hanic al values difer with the temperature, an have to be chosen

a c rding ly If no s an ard values are avaiable, ap lc ble values have to be determined other wise

Table 2 — Design cr iter ia for chapter 6.7 tanks

but not les than

(pvap − 1 b r)+pdyn if ap lica le

a

ptet b

m/ 2,4}

e,t/ 1,2; R

m,t/ 3)}

c

Design t emperature 2 °C provided that the operating

temperature of the tan is within the r ang

-40 °C to + 0 °C When the operating

temperature is outside this rang then the

design temperature shal b taken as the

ex t reme value of the operating t emperature

Temper ature at the pres ure t est

(nor maly + 0°C)

a

The dynamic forc s shal be taken into a c u t This may be done b intod cin an eq ivalent pres ure pdyn determined

on the basis of the forc es spe ified in RID/A DR 6.7.2.2 an 6.7.3.2 respe tively b t not les than 3 k a ( 0,3 bar) an ad it to

the vapour gaug e pr es ure (pvap – 1 bar) with pvap not les than 1 bar The larges c mparment ne ds tobe taken into a c u t

b

To be taken fom R ID/A DR 6.7.2.3an 6.7.3.3respe tively

c

It ne ds to be noted that the guarante d minimum me hanic al values difer with the temperature, an have to be chosen

a c rding ly If no s an ard values are avaiable, ap lc ble values have to be determined other wise

6.3 Calculation for inter nal pr es ure

6.3.1 Gener al

The thick es of the cylin rical se tion of the shel shal be deter mined in ac ordanc with 6.3.2 The

thick es of the en s ( inclu ing p r titions) of the shel shal be deter mined in ac ordanc with 6.3.3

The thick es of a conical se tion an the r einfor ement of the cone to cylin e ju ction shal be

dete mined in ac ordanc with 6.3.4 F r flanges, joint an their bolt se 6.3.6

Openingsin the shel shal be designed in ac ordanc with 6.3.5

Thecalculation for cons r uction types not g iven her eafe shal be in ac ordanc with EN1 445-3

6.3.2 Wal thicknes of the cylindr ical sec tio

Thewal thick es shal not be les than the value given b F r mula (1)

pf

Thefolowing design lmitations shal a ply to the tan en s (comp r e Figur 3):

(a) Hemisphe ical en s 0,0 1 D

Thefour r lationships in ( b) an the two r lationships in (c) shal be simultaneously fulfi ed

NOT Klo p er an K orb og en-ty pe en s are particular cases of torisp erical en s:

kor bb gen type

tor isp erical en for which R/D

e

= 0,8 an r D

e

= 0,1 4

Fig ur e 3 — Geometr y of ends

6.3.3.3Thicknes of the flang e ofthe end

The wal thick es of the cylin r ical or s raight flange of the en shal not be les than the thick es as

dete mined in ac ordanc with 6.3.2 for a cylindr ical se tion having the same inside diamete D

i

6.3.3.4 Thicknes of hemispherical ends

The thick es of a hemisphe ical en shal be not les than that dete mined b F r mula (2):

pf

Dp

,0(

f

DR

p

e

×+

Rp

8 5,0

i

di

b

1 1)2,07

×

=

rD

fp

DR

is r q ir d thick es of en to lmit membr ane s r es in c ntral part;

ey is r q ir d thick es of k uckle to a oid axisymmetric yielding ;

NOT It is not neces ary to calculate eb if ey > 0,0 5 Di"

It is per mis ible to r d c the thick es of the sphe ical part of the end to the value e

sover a cir cular

ar a that shal not come close to the k uckle than the dis anc

e

R⋅, as shown in Figur 3

The r ig ht edg e cylin r ical flange shal me t the r eq ir ment of 6.3.2 for a cylin e , if it length is

thick es as r eq ir ed for the k uckle

If en s ar man factur ed from several element then the welding coeficient λ ma be taken eq al to 1,0

( or thick es calculations only) if the weld cr os es the c own ar ea 0,6 De ( e Fig ur e 4)

c)comp sed ends

Fig ur e 4 — Positio ofwelds in ends

6.3.3.5.2 For mula for calculatio ofβ

e

)0,0

;/(

min e R

)/1(

0 6

,

1

YN

2 3,3

212,2

3 3,0(

23

1,0

[

2

0,1e0,0

ee

ββ

F r X= 0,1:

8 7,0

2 4,1

0 8,1

18 3,0(

23

2,0

[

10

0,2e0,1

ee

ββ

F r X = 0,2:

}5,0

;)5,89,15,0(9,0{

6.3.3.5.3Opening s within the knuckle ar ea of Kloepper - and Kor bbog en-ty e ends

6.3.3.5.3.1 In this clause r ules ar e g iven for inc easing the thick es of a dished en to compensate

for branches within the k uckle ar ea

The r ulesar lmited in a plcation to Kloep e - an K orb ogen-type en sfor which:

6,

The inc eased thick es r q ir d b this clause a ples to the whole k uckle ar a Welded-on

compensation is not per mited

6.3.3.5.3.2 Deter mine β

kfrom the pr oc d r in Ta le 3

Replac p b (β

kp) in F rmula (3) to ar ive at the r q ir d thick es F r mulae (4) an (5) contin e

and a ply without modification

Table 3 — Pr ocedur e for c alc ulatio of weakening factor β

k

for opening s inthe knuc kle r eg io (design)

fp

fp

V

2

}

14,0

5 2,0

9 8,0

2 4,0

;5,0{max

32

VV

V

3

0 4,041,05,

16,291,4

;2,4{min

2

VV

2

7 41,05,47,

=

ei

ei

k

3,01

;

max

Dd

B

Dd

BAβ

=

ei

ei

k

5,01

;max

Dd

B

Dd

BAβ

6.3.3.6 Thicknes of elipsoidal ends

A n el psoidal en is an en that is made on a forme that has a true el psoidal sha e El psoidal en s

shal have a sha e factor K with a value betwe n 1,7and 2,2

El psoidal en s shal be designed as tor ispher ical en sin ac or danc with 6.3.3.5 with values of r an R

asgiven b the folowing:

i0,0

Theconical se tion of the shel shal confor m to the desig n lmitationsin 6.3.4.2 The wal thick es shal

be dete mined in ac orda nc with 6.3.4.3 F r mor infor mation comp r e also EN 1 4 5-3

6.3.4.2Design lmitatio s ofthe co ical sectio

This clause gives rules for rig ht cir ular cones an cone/cylin e inte se tions whe e the cone and the

cylin e ar e of the same ax is of rotation It a ples only to cones with an a ex angle not greate than

12 ° an cones for which:

0 1,0/

F r the angle α se Fig ur e 5

F r ofset cones between two cylinder s the cylin e s shal have par alel c ntr l nes of et from each

othe b a dis anc not gr eate than the dife enc of the radi A r q ir ed thick es shal be calculated

in ac ordanc with 6.3.4.3.3 for the ju ction at the larg e en an in ac or danc with 6.3.4.3.4 for the

ju ction at the smal en Sinc the thick es calculated a ove is the minimum alowable at that p int

along the case, it is per mis ible to buid a cone fr om plates of dife ent thick es pro ided that at every

point the minimum is achieved

Fig ur e 5 — Junc tio betweenc y linder a nd c one; ang le α

6.3.4.3Deter minatio of the wal thicknes ofthe c onical sec tio

6.3.4.3.1 Theminimum thick es of the wal of the conical se tion e

k

of the shel shal be not les than

the lowes value g iven b F rmula (2 ), u les othe wise r eq ir ed b the subclauses of 6.3.4.3

6.3.4.3.2 Wal thick es at theju ction of cylin r ical an conical se tions of the shel

The con itions an design calculations for the lar g e en of the cone ar given in 6.3.4.3.3 an for the

smal en of the cone in 6.3.4.3.4

6.3.4.3.3 L rge en of the cone without a k uckle at thejoint

The joint shal be made with a but weld an the e shal be a smo th transition ac os the joint fr om

cylin r ical se tion to the conical se tion

The minimum thick es of the wal of the shel at the ju ction of the conical an cylin r ical se tions

shal be deter mined from thefolowing two for mulaeb iter ation

d

cc

cos/11tan

3

1

1c

shal be maintained for a distanc of at leas 1,4

2from the ju ction along the cone, se Figur e 5 The

2c

6.3.4.3.4 Minimum thick es at the smal en of the cone

This clause a ples provided that:

a) ju ction is mor e than 2

1

along the cylin e an 2

1

along the cone fr om any othe ju ction or

major discontin ity, such as anothe cone/cylin e ju ction or flange,

b) minimum thick es of the cylin e e

maintained for a dis anc

2from the ju ction;

1

 an

2

 ar calculated ac ording to F rmulae

(24) an (25) using Figur e 6 and

c) thick es me ts the r q ir ment of 6.3.2 an 6.3.4.3.1

Fig ur e 6 — Geometr y of c one cylinder inter sec tio ;smal end

Minimum thick es e

1

an e

2shal be chosen so that:

λβ

4

,

0

1H

+

×

=

tα

β

eDc

(2 )

21

cos

2

SS

×+

+

=

αt

NOT T e a ov e req irements do not provide v alues for e an e separ at ely T ey may have t o b adjusted

relative toe ch other to suit the ne ds of the desig n

6.3.5 Opening s and r einfor cements

6.3.5.1 Opening s in the shel

6.3.5.1.1 Gener al

Opening s in the shel shal be eithe cir cular or el ptical The siz of the o enings shal be not greate

than that given in 6.3.5.1.2 The dis anc between the o enings shal not be les than that given in

6.3.5.1.3

The ratio of major to minor ax is of el ptical o eningsshal not ex ce d 2:1 Theax is of el ptical o enings

in theshel along the lne of the shel shal be taken as the diamete of the o ening for design purp ses

F r elong ated o enings it larger length shal be taken as the diameter

F r calculation the ratio of the wal thick es of the branch to the wal thick es of the main b dy shal

comply with the lmits of Fig ur e 7

Fig ur e 7 — Wal thicknes r atio for br anc hes

6.3.5.1.2Size ofo ening s in the shel

The siz of the o eningsshal be not g reate than the folowing:

6.3.5.1.3The distanc e between o ening s

The dis anc between o ening s when measur d fr om theout ide of the branch or the r infor cement, as

a plca le, shal beno les than 2

m

 ,

whe e

mmimm

)2

imD

i

iim

D

Dr

 is the leng th of the shel consider ed as efe tive compensation, measur ed along the mater ial

c ntr lne from the edg e of the o ening without a branch or out ide of the branch (or p d)

F r dis anc s les than 2

m



the r maining c os -se tion between o enings shal be che ked to ensur e

that it is adeq ateto sus ain the lo d acting on it ( e also F rmula (3 )

6.3.5.2Noz le r einfor cement

6.3.5.2.1 The desig n method spe ified below only a plesto cylin r ical shels, and dished ends having

cir cular or el ptical o ening s, whe e theas umptionsand conditionsspe ified in 6.3.5.1 ar satis ied

6.3.5.2.2 Shels with o enings shal be r infor ced whe e ne es ary The r infor ement of the main

b dy can beo tained by:

a) set-in or set-on p ds;

b) set-in or set-on br anches; or

c) combinations ther eof

6.3.5.2.3 The r infor ement ar ea of the main b dy with o enings cannot be calculated dir ctly but

shal be as umed in the firs ins anc This as umption ma be verified b means of the folowing

method The a pled method is b sed on b sic pr s ur thick es es de ived from for mulae in 6.3.2 for

cylin r ical shels an fr om for mulae in 6.3.3 for dished en s and leads to r elationships between a

pr s ur lo ded ar a A

p

an a s r s lo ded cr os se tional ar ea which is the sum of A

fm, A

6.3.5.2.4 W her e ne es ar y, suficient r infor ement hal be provided in al planesthr ough the ax is of

the o ening branch

6.3.5.2.5 In the case of el ptical o ening s the ratio between the major an the minor ax is shal not

ex ce d 2 F r el ptical o enings in cylin r ical shels the o ening ax is par alel to the longitudinal ax is of

the cylin e shal be taken as the diamete for desig n purp ses F r el ptical o enings in dished en s

the major ax is shal be so taken

6.3.5.2.6 S t-in or set-on fi et welded br anches shal only be consider ed in the calculation if the ratio

of the diamete is d

i/D

e

≤ 1 3 an the r atio of the wal thick es e

be

m

is les than 0,7 Each fi et weld

shal have a thro t thick es not les than 0,7 times the thin e wal thick es

ppsp

AA

e

mi

ps

d

lD

A

mbi

p

2eld

bmmfm

ele

bbfb

le

d)

ppsp

AA

e

mim

ps

d

lr

A

mpai

p

2

eed

mmfm

le

ppfp

le

b)

ppsp

AA

e

mim

ps

d

lr

A

mbi

p

2eld

mmfm

le

bbimbfb

elel

e)

ppsp

AA

i

mi

ps

d

lD

A

pmi

p

2

eed

mmfm

le

pmpfp

c )

ppsp

AA

e

mi

ps

d

lD

A

mpai

p

2

eed

mmfm

le

ppfp

le

e

mim

ps

d

lr

A

mbi

p

2eld

mmfm

le

bimbbfb

lele

pmpfp

)

a), c)and e)calculation scheme for cylin rical shels; b), d)and f)calculation scheme for spher ical shels

Fig ur e 8 — Shels with isolated o ening s;ex amples for r einfor cement

6.3.5.2.7 A ll o ening sshal satis y the folowing g ene al r lationship:

fpp,fbb,fmdfpfbfmp

5,

is the pr s ur e lo ds ar ea as shown Fig ur 8, calculated using inte nal dimensions;

Afb is the c os se tional ar a of br anch within the compensation lmit ;

A

fm

is the c os se tional ar a of the shel within the compensation lmit ;

A

fp is the c os se tional ar a of the p d within the compensation lmit ;

fd,b is the lower of the nominal desig n s r s of the branch an fd;

f

d,p

is the lower of the nominal desig n s r s of the p d an f

d

NOT Simplified formula for calculation of A

fm, A

fp

an A

fbfor various g omet ries are g iv en b low the

diag rams in Fig ure 8 T ese formula are considered tog ive ac eptable results within the ac uracy of the method

How ever, the desig ner can cho se to calculate more precise values, b sed on the true g eomet ry, if he so wishes

6.3.5.2.8 Only set-in or set-on welded p ds in ac ordanc with Fig ur 8 shal beused

The width of the p ds

pconside ed as contr ibuting to the r infor ement shal not ex ce d

m

:

fpshal not ex ce d twic the wal thick es

of theshel ( min s toler anc an was ag e)em:

m

p

2e

6.3.5.2.9 The wal thick es of br anches (noz les) shal, if ne es ary, be in ex ces of the thick es

calculated to withs an inte nal pr s ur e for a length

bmeasur d from the ex te ior surfac of the

shel:

ba,ba,i

b

)(d +e ×e

In Afb the wal thick es ofnoz les ea,b ma be consider ed up to the length l only, measur d fr om the

ex te ior surfac of the shel

6.3.5.2.10 A reas A

p, A

fm, A

fp, shal be dete mined in ac ordanc with Fig ur e 8 whe e the leng ths

contributing to the r infor ement shal be not mor e than

m

 for the shel, an

bfor the br anch

The maximum value to be used in the calculation of the p rt ex ten ing inside, if any, in the case of se

t-throug h branches ( e Figur 8)shal be:

6.3.5.3Manhole and inspec tio opening s

6.3.5.3.1 Gener al

The shel or each of it comp rtment shal be fitted with a means of ac es to alow inspe tion of the

inte ior The means of ac es shal be:

— man ole; or

— for tanks or comp rtment of tan s with a ca acity les than 3 00 l, an inspe tion o ening with a

diamete d

n

of not mor than 40 mm

When desig ning man ole o enings, d e r eg ard shal be taken of the ne d to alow ac es with ful

r scue faci ties inclu ing self contained br athing a p ratus

Man oles shal be large enoug h to per mit the entry an the r scue of pe sons Inspe tion o ening s shal

be so smal that pe sons can ot enter , however , they shal be large enoug h to per mit adeq ate

inspe tion

The minimum dimensions of man ole an inspe tion o enings in lned shels shal be maintained afe

the lning is a pled

The sp cing between adjac nt manholes or inspe tion o ening s shal be not les than that descr ibed in

6.3.5.1.3

6.3.5.3.2Reinfor cement ofmanhole and inspection opening s

A shel containing a man ole or inspe tion o ening shal have adeq ate r infor ement (compensation)

in the ar a adjac nt to the man ole or inspe tion o ening Reinfor cement shal be in ac or danc with

6.3.5.2 an ma be o tained by:

— inc easing the wal thick es of the shel;

— use of a r infor ement plate;

— use of a cir umfe ential r infor cement ring ;

— inc easing the wal thick es of the ne k ring ; or

— combination of the a ove measur es

Figur 8 also shows ex amplesof r einfor ement which ma beused

6.3.5.3.3 Size ofo ening s

The diameter s of o enings shal be:

— not les than 1 0 mm an not mor e than 40 mm for inspe tion o ening s;

— not les than 5 0 mm for cir cular man oles

F r non-cir ular man oles, no dimension shal be les than 5 0 mm

6.3.5.3.4 Neckr ing s

The minimum thick es of the ne kr ing shal not be les than the r eq ir ed thick es of theshel

6.3.6 Manhole co er s

6.3.6.1 Cir c ular flat cov er s

6.3.6.1.1 The minimum thick es e for cir ular flat covers with nar ow fac d gaskets, as shown

typicaly in Figur 9 shal be:

5,0

FGGmF

2

G

)/

9 9,1()/3

FGGm1

)/

is the desig n str ength of the flang e mater ial;

Wm = 0,5(Ab + Am) Sa is the flange design b lt lo d:

6.3.6.1.2 The typical minimum thick es e for cir ular flat covers with ful fac d gasket , as shown in

Figur 10 shal be:

5,0

F)/(41

,

whe e

C is the b lt cir le diamete ;

SF is the desig n str ength of the flang e mater ial

Ful fac d g asket shal not be used for subs anc s of Clas 2

6.3.6.2Eliptical flat cov er s

6.3.6.2.1 The minimum thick es for el ptical flat cover s with narr ow fac d gasket, as shown

ty icaly in Fig ur 9 shal be:

5,0

FG

mF

22

G

)/(

6()/3

FG

m

1

)/

6.3.6.2.2 The minimum thick es for el ptical flat cover s with ful fac d gasket, as shown typicaly in

Fig ur 1 shal be:

5,0

F)/(41

,

whe e

a is the minor diamete of the el ptical en ;

Z is the coeficient or el ptical en s ( e Figur 1 )

Fig ur e 9 — Cir cula or eliptic al flat cov er with nar r ow fac ed g asket

Fig ur e 10 — Cir cular or eliptical flat cov er with ful faced g asket (for lq id o ly)