EN13445

[Vitd]

Hallo,

I want to know whether the weld as shown on the attachment is allowable acc. EN13445.

If yes how to confirm it with the norm.
Where can find it in the EN13445 code.

Could any help me here?

Thanking you

 

[Jay_]

Please clarify more about what the sketch indicates...e.i. what are you welding using this uncommon detail.

Detailing is a hobby,

 

[Vitd]

Hi jay,

Thank you for your reply.

It is a tube sheet heat exchanger (NEN)

 

[Vitd]

Hi


Hier we are welding a tube sheet to shell in both tube side and shell side.

It is acc.EN 13445 configuration a

 

[XL83NL]

Service conditions? Testing group? Fatigue or creep? Which weld? Weld dimensions? Welding process? Material thickness? PWHT?

Just a few details that will dictate whether this is acceptable under EN 13445.

Huub
- You never get what you expect, you only get what you inspect.

 

[Vitd]

Hallo,

The details

Working condition
Testing condition 3
No fatigue or creep
Butt weld with 60 degrees
Material thickness 25 mm and as plate

I have only these details

 

[XL83NL]

Have you looked at the respective parts of EN 13445 to determine the options, and weld details not allowed?

edt: were happy to help you but if haven’t done your homework and can’t provide sufficient details and background as to why a detail may or may not be allowed, changes are little you’ll get any good advice.

Huub
- You never get what you expect, you only get what you inspect.

 

[Vitd]

Hi
Ja,
EN13445-3

But my customer wants to know exactly.

 

[Vitd]

Hi

Have u Seen the attachments?

 

[Vitd]

Hi

Background

The vessel we manufactured around 1 year back

Now our customers are claiming that this type of weld is not allowed, and wants to send us back the vessels.

He wants know that this type of weld is allowed acc.to EN13445.

We want to just justify that this type of weld is allowed acc. To EN13445

How should is justify this?


Your suggestions are very much appreciated.

 

[Jay_]

see table A-4 in en 13445-3, DETAIL TS1

Detailing is a hobby,

 

[Vitd]

Hi

This type of weld is given in 13445-3

TS2 picture in the weld table.
But it says no analytical method allowed

They only want to be careful.

Please could you help me hier.

 

[SnTMan]

This type of detail is very common under ASME Sec VIII, Div. 1, subject to dimensional requirements. I'd be surprised if it were not allowed under other Codes / standards.

But Vitd you must gain enough familiarity with your applicable Codes / standards to satisfy yourself of the validity of the detail. Else you likely cannot convince your client.

Regards,

Mike

The problem with sloppy work is that the supply FAR EXCEEDS the demand

 

[XL83NL]

Dutch customer and/or manufacturer?

Huub
- You never get what you expect, you only get what you inspect.

 

[Vitd]

Hallo

Ja
Dutsch customer

 

[Vitd]

Hallo

Thanking u guys for reply

I have another statement to make " if we don't have fatigue or creep any type of fillet and butt weld given in EN1708 is valid like in our case and in EN13445"

 

[r6155]

This design is allowed in En 13445 -3 ( I have edit 2015)
See Table 17-4 detail 2.1 scketch (c)

I assume that welding procedure was made and a mock-up too.
Ultrasonic test was made?
Laminar tearing was checked?
PWHT was made?

Regards

 

[HTURKAK]

I have DIN EN 13445-3:2010 German version. ( Unbefeuerte Druckbehälter - Teil 3_ Konstruktion_ Deutsche Fassung ).

Apparently, the detail that you have posted applicable detail as per

(Tabelle A-4 — Rohrböden - Schweißverbindungen von Rohrböden und Schalen , Ref. TS 1 ).

And Lamellar tearing susceptibility: no risk if forged , and possible risk incase of machined from plate.

The applicable welding tests are, 1,2,3,4.

 

[r6155]

Detail TS 1 is for butt weld. Weld showed in sketch of (OP) is not butt weld
Hence TS 1 is not applied,
The correct one is Table 17-4 detail 2.1 (c)

Regards

 

[Vikko]

It is a classical ButtWeld with 60° angle and full penetration: this (the drawing in the first post) is the perfect welding bevel with full penetration for attaching a tubesheet or flat end or even a blind flange to a shell a pipe or tubesheet. There is no discussion about that.

You can check Annex A of EN 13445-3, in table A.4 (tube to tubesheet) which by first row is just an extension of table A.3 (flat ends). In particular that is both figures in E6 or E9. You can also check EN 1708-1 (but I don't like much that standard, it is poorly written). If you check both ASME B16.5 fig 9, ASME B16.9 tab 1, EN 1092-1 fig A1, and A2, for attaching a flange to a pipe, when the thickness is above 22mm, you could have also made a smaller weld bevel (witha U o Y type shape).

Customer has no reason to complain about the drawing. If the weld is poorly made that is another kind of matter, but on the concpetual design and sketch of the welding bevel that is totally correct.