Table Of Contents

Title:

Piping and Valves

Doc. No.

L-001

Annex

C

EDS

NBR5

Project: NORSOK

Company:

Rev.Date:

 20.09.99

Rev:

3

 

PIPE BRANCH SPECIFICATION

NOMINAL HEADER SIZE (in)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

36

30

24

20

18

16

14

12

10

8

6

4

3

2

1.5

1

0.75

0.5

N

0.5

 

 

TOL

TOL

TOL

TOL

TOL

TOL

TOL

TOL

TOL

TOL

TOL

SRT

SRT

SRT

SRT

ST

O

0.75

 

 

"

"

_

_

_

_

_

_

_

_

_

_

_

_

ST

 

M.

1

 

 

"

"

_

_

_

_

_

_

_

_

_

_

_

ST

 

 

1.5

 

 

"

"

_

_

_

_

_

_

_

_

_

_

ST

 

B

2

 

 

"

"

_

_

_

_

_

_

_

_

_

ST

 

R

3

 

 

WOL

WOL

WOL

WOL

WOL

WOL

WOL

WOL

WRT

WRT

WT

 

A

4

 

 

"

"

_

_

_

_

WRT

WRT

_

WT

 

N

6

 

 

"

"

_

WRT

WRT

WRT

_

_

WT

 

C

8

 

 

"

WRT

WRT

_

_

_

_

WT

 

H

10

 

 

WRT

"

_

_

_

_

WT

 

 

12

 

 

"

"

_

_

_

WT

 

S

14

 

 

"

"

_

_

WT

 

I

16

 

 

"

"

_

WT

 

Z

18

 

 

"

"

WT

 

E

20

 

 

"

WT

 

(in)

24

 

 

WT

 

 

30

 

 

 

 

36

 

 

TOL Threadolet or threaded nipolet or threaded latrolet/elbolet. Threads according to ASME B16.11.

SRT Screwed (threaded) reducing tee with reduction bushing to ASME B16.11.

ST Screwed (threaded) tee to ASME B16.11.

WOL Weldolet or latrolet/elbolet.

WT Buttweld tee to ASME B16.9

WRT Buttweld reducing tee to ASME B16.9

 

 

 

Pressure class for ASME B16.11 fittings

Type

Wall thickness

Pressure
class

 

From

To incl.

 

Socket

Smallest

sch 80

3000

welding

>sch 80

sch 160

6000

Threaded

Smallest

sch 160

3000

 

>sch 160

xxs

6000

NOTES

  1. Minimize use of latrolets/elbolets and lateral tees.
  2. WRT may be substituted by WT +reducer.
  3. Fabrication of branch connections by forming (extrusion or pulling, including sweepolets) is encouraged when cost saving is improved, and when mechanical integrity is maintained or improved. This applies especially where olets (WOL) would otherwise be used.

    For moderate load cycling services with design temperatures between -100_C to 200_C and header thickness less than 15 mm a design option may, based on Company acceptance, be set on branch.

    When these options are used, the design, design calculation and fabrication procedure shall be accepted by Company