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BN-EG-UE204 Guide for The Preparation of Equipment Classication Listsfor Pressure Vessel

Table of Contents

1. Purpose2. General3. Responsibilities4. Guide Lines5. Flowchart6. References7. Attachements

1. Purpose

The purpose of this guide is to describe how classification lists for equipment, subject to some form of authority orthird party inspection, can be prepared and should be handled.

2. General

2.1 Sub ect Definition

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This guide refers to classification lists for equipment; for classification of piping systems see ref. 6.7.

Equipment in the sense of this guide means pressure vessels and related equipment types such as heater coils,loading arms etc.; machine parts, e.g. pump and compressor houses are, in most cases, not included forclassification. For the definition of the concept "pressure vessel" in various countries see ref. 6.5.

2.2 Purpose of a Classification List

The purpose of a classification list is to establish, in a systematic, way, the necessity and the nature of authorityapproval or third party inspection of equipment.

2.3 Classification List and Authorities

The classification list for equipment is, in the majority of the countries, not a mandatory document, requiring submittalto a Pressure Vessel Authority or another authority such as a Labor Inspection. The most important exception is theNetherlands, where the classification list has a formal status.

This exceptional position warrants a separate guide for the classification list for the Dutch Pressure Vessel Authority;see ref. 6.6. For all other countries, equipment classification lists should be prepared if they can be assumed to bepractical or desirable for the purpose defined under 2.2.

3. Responsibilities

The Project Manager has the overall responsibility for the preparation, checking and issue of the classification list. The Project Engineering Group is responsible for the preparation of the classification list, inclusive of collecting therequired data and information from the various data suppliers.

The Authority Engineering Group is responsible for checking the classification list and for providing advisoryservices during its preparation.

Other Departments and Engineering groups act as information suppliers. Reference is made to 4.3.1.

4. Guide Lines

4.1 Requirement or Need for a Classification List

The Project Manager or his delegate should, in concert with the Authority Engineer, establish whether a classificationlist is required, necessary or desired for the project. He should also assign the individual engineer(s) responsible forthe preparation of the classification list(s).

4.2 Form, Minimum Information, Language, Units and Document Numbering

4.2.1 Basic Form

Ref. 6.6 gives the basic form as used in the Netherlands, inclusive of the variations which have become possible bycreating 'electronic' versions of this form.

For non-Dutch projects, the information to be used for equipment classification should preferably be provided in

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electronic form, e.g. a database file or similar; this will enable the use of engineering databases as information sourcefor the classification list. For example, quite some information for classification can be drawn from the database, fromwhich also equipment listings are generated.

A classification list 'form' may be defined electronically, but this is not a strict requirement.

4.2.2 Minimum and Optional Information

The minimum information for classifying equipment generally comprises the following:

- item number

- manufacturer (and country of origin)- medium description, if applicable per space (shell, tube, ...)- phase of the medium, if applicable per space (solid, liquid, vapor, gas - often abbreviated)- design pressure and design temperaturevolume, where applicable per space- reason for authority, third party or client inspection ( classification , usually in abbreviated form)- requirement for authority of third party inspection (either Y es or N o).

Notes:

1. media descriptions will have to be abbreviated for both complex descriptions and mixtures; the use of mediumcodes should be considered. A detailed listing of all components is usually not possible and also not required. Very

different components (e.g., steam and liquid hydrocarbons) should be conclusively described, similar componentssuch as in hydrocarbon mixtures can be covered by a simplified description like 'C -hydrocarbons'.

2. pressures on process related documents are sometimes given in bar absolute ; this should be carefully checkedbefore this information is used.

3. pressure vessel spaces include shell and tube sides, heating/cooling jackets with a single separation from the shell,heating/cooling coils if welded to a shell, two reactor spaces with a common separation, etc.

The following information on classification lists is optional and should be given for each space as applicable:

- item name- item location (inside/outside building)- flow diagram reference- purchase order reference- physical data such as flash point, atmospheric boiling point, critical temperature, vapor pressure, density etc.- operating pressure and operating temperaturedesign code- administrative data such as manufacturer's number, client serial number, authority serial number(s) etc.- medium and operating circumstances related data such as a hazard category ranking or NFPA-figures (notes 1 and2)- extent and nature of client or authority inspection (usually the result of some kind of classification and marked by e.g.indication of an inspection group, a construction code or category or a similar system

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- protective systems data (e.g., for relief valves : number, set pressure, throat diameter).

Notes:

1. NFPA - National Fire Protection Association; standard 325M provides detailed information on the most importantphysical and hazardous properties of a large number of substances. See ref. 6.8.

2. hazard categories can be ranked by means of figures (e.g., the Netherlands) or by abbreviated descriptions (e.g.,Germany or Belgium).

3. for units to be used, see 4.2.4.

The following information is practical for control of the database operations, but does not always need printing:

- revision indication per item- document revision indication- notes or remarks.

The actual content of a classification list for a given project shall be established on basis of the project needs, i.e. thecountry in which the project should be realized and the local pressure vessel regulations and customs. A few examplesare contained in Attachment 7.1.

4.2.3 Language

The language on the classification list should normally be English. If required by the project manager the use of another language is possible; this is particularly the case, if the classification list will be used for presentation orinformation purposes to local authorities.

4.2.4 Units

The preferred units for the classification list are SI units, however, with a few exceptions such as pressure (usuallyexpressed in bar(g)), relief valve diameters (normally expressed in mm), volumes (preferred to be in m , but older listsoften have dm ) and densities (either kg/ m or kg/dm ).

4.2.5 Classification List Document Numbering

The classification list document lead number is defined in ref. 6.1 as '910' and should be used unless otherwise

instructed by the Project Manager. A client document number shall be added if required by the contract.

For large projects, it is often convenient to have more than one classification list, for example one per process or utilityunit.

4.3 Preparation of a Classification List

4.3.1 Supply of Data

The supply of data for the classification list is a joint effort by various groups, departments and, sometimes, thirdparties. The overall control shall be with the Project Engineering group of the Engineering Department. Depending onthe data actually to be included (see 4.2.2 above) data may be supplied by :

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- the Process Engineering Department- the Control Systems Engineering group- the Vessel Engineering group- the Authority Engineering group,

together forming the internal suppliers, and

- the equipment manufacturers- the Pressure Vessel Authority- the client,

which form together the external suppliers.

4.3.2 Filling out the Classification List

The classification list should be filled out by the Project Engineering group in concert with the internal data suppliers(Process Engineering Department etc.). The external data can be extracted from documents and correspondencereceived from the external suppliers or be requested from them.

4.3.3 Checking of Data

The classification list should be checked by the Project Engineering group for consistency with equipment datasheets/specifications, engineering flow diagrams and/or pressure/temperature profiles (ref. 6.2), in particular if the

classification list will be used for external presentation and/or application purposes. The Authority Engineering groupshould make a check for:

- completeness of the data- the way in which the data are presented (attention to be paid to units used and, superficially, correctness); "unusual"data (e.g. liquid densities below 500 kg/m ) should be verified.

4.3.4 Approval, Issue and Distribution

The classification list should be approved and issued by the Project Manager.

The classification list should be distributed internally to:

- the Process Engineering Department- the Vessel Engineering group- the Piping Engineering group- the Inspection group- the Authority Engineering group, and in some cases- the site office.

Other departments or groups may receive a copy on request.

The external distribution includes normally the client and the Pressure Vessel Authority or a recognized third party,charged with approval/inspection work on behalf of the Pressure Vessel Authority. The necessity of this distribution isdetermined by the Project Manager in concert with the Authority Engineering group. See ref. 6.4.

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4.3.5 Updating the Class ication List

The list should be regularly updated and reissued/redistributed during the project, incorporating revisions of the initialdata, adding further data as they become available from internal and external suppliers and comments from theusers.

4.3.6 Software Application

The majority of classification list will be prepared by using software such as the dBase-III program; complicatedsoftware is not necessary as virtually no calculation is required to establish the classification. The limitations are

usually by the format of the classification list : too many columns (printing problem) or too many records (softwareslowdown or memory problems).

Because the classification system is different for each country, the use of an algorithm to classify 'quickly' is notrecommended; if still an algorithm will be used to classify, a careful check of the results will be required.

4.4. Conservation of Classification List

The final classification list should be conserved either in the form of a hard copy for archiving or as a software file. It isrecommended to keep one hard copy of the last issue available for the case of questions from client or PressureVessel Authority during the administrative finalization of the project. This finalization period may well extend afterCompany's actual involvement with engineering and/or construction of the project.

The client should be provided with:

- the original if the classification list was prepared manually or- a software file if agreed contractually or mutually, or- hard copies as per contractual requirements.

The first two choices give the client the possibility to incorporate the classification list as a permanent document in hisadministration.

Note:

For the Dutch situation, a permanent classification list is a mandatory document for the client.

5. Flowchart



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6. References

Document

DocumentNumber

Title Level

6.1 BN-W-UE301 Numbering of ProjectDocuments

4

6.2 BN-EG-UE1 Pressure Temperature Profile 5

6.3 BN-EG-UE2 General Rules to EstablishMechanical Design Pressuresand Temperatures

5

6.4 BN-EG-UE203 Defining Information to beSubmitted to Pressure VesselAuthorities

5

6.5 BN-EG-UE214 Guide for the Preparation of Equipment Classification Listsfor the Dutch PressureVessel Authority

5

6.6 BN-EG-UE215 Definitions of Pressure Vesselsand Related AuthorityRequirements

5

6.7 BN-EG-later Guide for the Classification of Piping Systems for AuthorityApproval Purposes

5

6.8 NFPA 325M Fire Hazard Properties of Flammable Liquids, Gases, andVolatile Solids

-

7. Attachments

7.1 Examples of Classification List Contents

Examples of Classification List Contents

A. The Netherlands

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See ref. 6.6 for an extended description of the classification list for the Dutch Pressure Vessel Authority.

B. Belgium

For Belgium no classification system is prescribed by law or by regulations; an exception must be made for steamboilers/steam vessels and LPG-containing vessels, for which some regulations are contained in the "AlgemeenReglement voor de Arbeidsbescherming".

If no requirements have been formulated on basis of e.g. an operating permit grant, the system proposed by the non-official document "Bijzondere Veiligheidsvoorschriften voor Bedrijven met Belangrijke Risico's" can be used. See ref.6.5. Otherwise, the purchaser should determine his own requirements.

A classification list is not a mandatory document and does not require presentation to authorities or a third party, butcan be made for internal purposes and for discussion purposes with any third party.

It would contain the following information:

- revision indication per item- item numberitem locationmanufacturer/country of originpurchase order referenceflow diagram reference

- medium description per spacephase of the medium per spaceatmospheric boiling point- operating pressure and operating temperaturedesign pressure and design temperaturevolume per spaceindication of inspection body- Y es or N o regarding authority/third party inspectioninspection group (see ref. 6.5)- notes or remarks.

C. FranceFor France a classification system has been defined on basis of two decrees issued in 1926 and 1943. Theimplementation of the requirements is, in principle, a responsibility of the French or the foreign manufacturer.Consequently, the purchaser should be aware of the French requirements.

A classification list is not a mandatory document and does not require presentation to authorities or a third party, butcan be made for internal purposes and for discussion purposes with any third party.


revision indication per item

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item numberitem locationmanufacturer/country of originpurchase order referenceflow diagram referencemedium description per spacephase of the medium per spaceatmospheric boiling pointflash point

vapor pressureoperating pressure and operating temperaturedesign pressure and design temperaturevolume per spaceindication of inspection body

Yes or No regarding authority/third party inspectioninspection group (e.g., CODAP construction category; see ref. 6.5)design code (often CODAP) orelief valve data (number, throat diameter, set pressure)notes or remarks.

D. Germany

For Germany a classification system has been defined on basis of the 'Druckbehlterverordnung' (Decree on PressureVessels), which itself rests on the Act on Machinery Safety. The contents of the decree are worked out in an extensivesystem of regulations (TRB's, Technische Regeln fr Druckbehlter) and in references to other German regulations andnorms.

The implementation of the requirements of the decree is, in principle, a responsibility of the German or foreignmanufacturer after he has been informed so by the purchaser. Consequently, the purchaser should be aware of theGerman requirements.

A classification list is not a mandatory document and does not require presentation to the relevant authorities or to athird party, but can be made for internal purposes and for discussion purposes with any third party.


- revision indication per item- item numberitem name- manufacturer/country of originpurchase order referenceflow diagram referencemedium description per space (specific indication of some components such as benzene of hydrogen sulfide may benecessary)



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- phase of the medium per space.- atmospheric boiling pointflash point- critical temperature per space- vapor pressure- design pressure and design temperaturevolume per spaceindication of inspection body- Y es or N o regarding authority/third party inspection

- inspection group (see ref. 6.5)- type of inspection (first or regular)- notes or remarks.

E. Switzerland

For Switzerland a classification system has been defined on basis of two decrees issued in 1925 and 1938 respectively. The implementation of the requirements is, in principle, a responsibility of the Swiss or foreign manufacturer after hehas been informed so by the purchaser. Consequently, the purchaser should be aware of the Swiss requirements.

A classification list is not a mandatory document and does not require presentation to the Swiss Pressure VesselAuthority, but can be made for internal purposes and as information document to the Authority.


- item number- manufacturer/country of origin- medium description per space- design pressure and design temperaturevolume per space- Y es or N o regarding authority/third party inspectioninspection group (see ref. 6.5)- notes or remarks.

F. Portugal

For Portugal a classification system has been defined on basis of an act and a decree issued in 1974. Theimplementation of the requirements is, in principle, a responsibility of the Portuguese or the foreign manufacturer afterhe has been informed so by the purchaser. Consequently, the purchaser should be aware of the Portugueserequirements.

A classification list is not a mandatory document and does not require presentation to the Portuguese Pressure VesselAuthority or a third party, but can be made for internal purposes and as information document to the authority or therecognized Portuguese third party.




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- item numberitem name- manufacturer/country of origin- medium description per space- characteristic sizes (diameter and/or length) per space- design pressure and design temperaturevolume per space- Y es or N o regarding authority/third party inspectioninspection group (see ref. 6.5)

- notes or remarks.G. Norway

For Norway no specific classification system has been developed. Specific requirements have been laid down for steamboilers (which are under supervision of the Boiler authority) as well as for other types of pressure vessels, providedthey (a) contain flammable substances and (b) operate above 0.5 barg; they are under the supervision of the NationalInspectorate of Explosives and Flammables, with inspection by a third party. These requirements are, to a large extent,referring to internationally accepted design codes. The implementation of the Norwegian requirements is, in principle,a responsibility of the Norwegian or foreign manufacturer after he has been informed so by the purchaser.Consequently, the purchaser should be aware of the Norwegian requirements.

A classification list is not a mandatory document and does not require presentation to the Boiler Authority, theInspectorate mentioned above or the third party. It is only prepared if client requires so.

H. Mexico

For Mexico no specific classification system has been developed, as all boiler and pressure vessel designs should be inline with American codes such as ASME and TEMA.

There is at present no detailed experience with authority inspection of boilers and/or pressure vessels in Mexico.

I. Thailand

In Thailand no specific classification system has been developed for pressure vessels until present. A definition of theconcept 'pressure vessel' was not found in the Thai regulations, however, a differentiation is made between steamboilers (requiring a boiler operator as responsible person) and other pressure vessels.

The assessment of the design of boilers and pressure vessels (and also pumps and compressors) is done per sitelocation or part thereof (area, unit or entity, that can be defined otherwise) by a Thai engineer. This engineer shallpossess a license to do this type of assessment work, on basis of which he accepts the design responsibility. Theresponsibility for the installation of the pressure vessels is accepted on a similar basis by a second licensed engineer,who acts as inspector. Third party inspection does not relieve the purchaser from the involvement of Thai licensedengineers.

The paper work associated with this approach is described in ref. 6.5.



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