| Title: | Piping and Valves | Doc. No. | L-001 | Chapter | 4 |
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| Project: NORSOK | Company: | Rev.Date: | 20.09.99 | Rev: | 3 |
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The revision identity for individual data sheets may be lower than the standard revision.
The following revision system is applied and maintained:
· The revision status of this standard is shown in the header.
· In front of each annex a revision status is listed for each individual data sheet.
Projects may select only relevant information extract of data sheets from L-001 for a particular purpose, e.g. for purchase of mechanical packages.
When this standard is used for a specific project, an Operator installation identity code may be identified in the Piping Class Sheet (PCS), Service Code (SC) sheets and Valve Selection Manual (VSM) sheets only. Similarly when used for a project a project identity code is defined.
Example:
| Doc.no. L-001 |
Operator xxxxx |
| Project xxxxxx |
These data sheet lists the service for which the different piping classes are intended. The identification of the data sheet is by the prefix "N-".
The services listed are general. The intention is that it should be used for selection of piping classes. The services listed are not "all inclusive" which means that the piping class can be used for other services. Having selected the piping classes for the various services for a project/installation, a detailed project service listing shall be included in clause 6 of this document when issued as a project specific spesification.
Each project shall select existing PCS's and when needed add new PCS's suitable for the service requirements. However, for standardisation purpose it is essential that new PCS's as far as possible refer to existing data sheets of this standard.
It should be noted that each project shall select PCS that are suitable for the service and meet the authority requirements or requirements stated by the owner/purchaser.
These sheets are the main data sheets which refer to all specifications required for the piping and valve components. The references are either to national/international standards or additional requirements defined by this standard.
The characters of the PCS number (e.g. AC11S) have the following meaning:
1st character identifies pressure rating:
| A | = | Class | 150 | ASME B16.5 |
| B | = | Class | 300 | ----"---- |
| C | = | Class | 400 | ----"---- (not used) |
| D | = | Class | 600 | ----"---- |
| E | = | Class | 900 | ----"---- |
| F | = | Class | 1500 | ----"---- |
| G | = | Class | 2500 | ----"---- |
| H | = | 2000 psi | API | |
| I | = | 3000 psi | API | |
| J | = | 5000 psi | API | |
| K | = | 10000 psi | API | |
| L | = | 15000 psi | API | |
| P | = | Class | 4500 | ANSI B16.5 |
| Z | = | PN10 | ||
| Y | = | PN16 |
2nd character identifies material as defined in the MDS section 4.9.
3rd and 4th character identifies sequential number.
5th or 6th character (when used) identifies this character is reserved for certain application.
When used the following means:
S = Sour service
X, Y and Z = Special application
Project specific pipe classes (New and modified, see clause New piping classes.)
References to other data sheets are given in the PCS'es:
· SC - N-xxx (ref. Clause 4.3)
· EDS - Nxxxx (ref. Clause 4.5)
· VDS - xxxxxx (ref. Clause 4.7)
· VSK - Vxxx (ref. Clause 4.8)
· MDS - xxx (ref. Clause 4.9)
These sheets cover additional requirements for design and procurement:
The characters in the EDS number (e.g. NBE1) have the following meaning:
1st character identifies N for NORSOK standard
2nd and 3rd character identifies type of standard sheet:
| AF | = | ANSI flanges |
| BE | = | Bending (or bends) |
| BO | = | Bolting |
| BR | = | Branches |
| FI | = | Fittings |
| GA | = | Gaskets |
| GF | = | Glassfibre flanges |
| GZ | = | Galvanizing |
| HF | = | Hardfacing |
| IP | = | Internal parts |
| LB | = | Line blinds |
| MJ | = | Mechanical joints |
| PI | = | Pipes |
4th character identifies sequential number.
5th character when used, is reserved for special application.
This is a listing of valve functions and selection criteria.
The data sheet shall be used for the valve selection in the development of P&ID's.
This is a data sheet for specification of valves. VDS give references to other data sheets (VSK, ESD and VDS ) to cover the full specification for the valve.
The characters in the VDS number (e.g. BLAC10R) have the following meaning:
1st and 2nd character identifies define valve type:
| BL | = | Ball valve |
| BU | = | Butterfly valve |
| CB | = | Combination valve (several valves compined in one piece) |
| CH | = | Check valve |
| DM | = | Diaphragm valve |
| GB | = | Globe valve |
| GT | = | Gate valve |
| NE | = | Needle valve |
| PG | = | Plug valve |
| SV | = | Special valve |
3rd character identifies pressure rating:
| A | = | Class | 150 | ASME I B16.5 |
| B | = | Class | 300 | ----"---- |
| C | = | Class | 400 | ----"---- (not used) |
| D | = | Class | 600 | ----"---- |
| E | = | Class | 900 | ----"---- |
| F | = | Class | 1500 | ----"---- |
| G | = | Class | 2500 | ----"---- |
| H | = | 2000 psi | API | |
| I | = | 3000 psi | API | |
| J | = | 5000 psi | API | |
| K | = | 10000 psi | API | |
| L | = | 15000 | API | |
| P | = | Class | 4500 | ASME B16.34 |
| R | = | Class | 800 | (Valves = <2") |
4th character identifies material as defined in MDS Clause 4.9.
5th character identifies sequential number.
6th character sequential number. (A letter to be used in place of this number when deviating from NORSOK standard).
7th character identifies end connection:
| B | = | Buttwelding end or pup piece with buttwelding end. | ||
| C | = | Clamp type end connection | ||
| D | = | Female threaded one end/Buttweld other end (Duo end). | ||
| E | = | SAE flange end | ||
| F | = | Flat face flange | ||
| J | = | RTJ end connection | ||
| K | = | Compact flange end. Replace K by one of the following letters when specifying a valve | ||
| L | = | SPO compact flanges (IX seal ring) | ||
| M | = | Graylock | ||
| N | = | Vector Flange Lok | ||
| Q | = | Desflex | ||
| S | = | Verax | ||
| R | = | Raiced face flange | ||
| T | = | Female threaded | ||
| X | = | Special | ||
This data sheet cover additional requirements for design purchase, testing and marking of valves.
This data sheet lists specify material properties and special requirements.
The MDS's are referenced to from the PCS and VDS. More than one material standard may be listed in the MDS. In this case the standard referenced in the column "MATERIAL NAME" in the PCS and "MATERIAL" in the VDS shall be selected.
For listed material without MDS reference, standard material shall be used.
The characters in the MDS number (e.g. C01) have the following meaning:
1st character identifies material type identity:
| C | - Carbon steels; Type 235, Type 235LT, Type 360LT |
| D | - Ferritic/Austentic Stainless Steels; Type 22Cr, Type 25Cr |
| P | - Polymers including fibre reinforced |
| R | - Austentic Stainless Steels; Type 6Mo |
| S | - Austentic Stainless Steels; Type 316 |
| T | - Titanium |
| X | - High strength low alloyed steels |
2nd and 3rd character identifies sequential number.