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1 Update on the comparison of selected issues of the ASME Code (Sect. VIII) with EN standards Druckgerätetage, München, June 2011 Dr. Robert Kauer / Dr. Jürgen Deininger [email protected]

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Page 1: Update on the comparison of selected issues of the ASME ... · PDF fileTÜV SÜD Industrie Service GmbH 1 Update on the comparison of selected issues of the ASME Code (Sect. VIII)

1TÜV SÜD Industrie Service GmbH

Update on the comparison of selected issues of the ASME Code (Sect. VIII) with EN standards

Druckgerätetage, München, June 2011Dr. Robert Kauer / Dr. Jürgen [email protected]

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Content

Introduction

Updated considerations regarding- Material - Allowable stress values- Design Basics

Summary

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Content

Introduction

Updated considerations regarding- Material- Allowable stress values- Design Basics

Summary

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Some existing statements

Die europäische Druckbehälternorm EN 13445 – was lange währt …Veröffentlichung DIN Mitteilungen: Normenausschuss Chemischer Apparatebau (FNCA) im DIN, Feb. 2011

„und es deutet vieles darauf hin, dass sie mit steigender Akzeptanz im EWR auch auf internationalem Parkett eine führende Rolle spielen wird.“

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EC Comparative Study Results

Comparative Study on Pressure Equipment Standards, Summary, EC DG Enterprise, Contract No. FIF.20030114, July 2004

DBF: Design by FormulaDBA: Design by AnalysisPED: Pressure Equiment

Directive

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Some existing statements pro EN

*1) Comparative Study on Pressure Equipment Standards, Summary, EC DG Enterprise, Contract No. FIF.20030114, July 2004

The fracture toughness concept in the ASME is less

conservative

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European Regulation

Requirements for Construction and Design

- Design- Construction- Equipment- ...

Complete conversion (other national codes had to be repealed)

Pressure Equipment Directive(PED)

97/23/EG, 1997 (mand. 2002)

but old national code still in place likeAD-2000, BS 5500, CODAP

with some additional consideration also ASME

In-Service Requirements

- Service- Inspection- Testing- ...

National requirements had to be extended and adapted

e. g. GermanyBetrSichV

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ASME‘s legal standing

■ Legislation at the location of the plant(e.g. Minnesota, New York City, Quebec, Dubai, Sarawak, …)

Section IPower boiler

Section IIINuclear power

Section IVBoiler

Section VIIIPressure vessel

Section XFiber plastics

ASME Piping Code

ASME B31.1Power piping

ASME B31.3Process piping

Construction Codes

Reference Codes Section IIMaterial

Section VNDT

Section IXWelding/Brazing

“In-service”-Codes Section VIBoiler

Section VIISteam boiler

Section XINuclear power

Standards, recommendations ANSI ASTM AWS ASNT

■ Authority at the location of the plant with references to - National Board Inspection Code NBIC- API In-service Codes e.g. API 510

API

ASME Boiler & Pressure Vessel Code

NACE

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Some facts around ASME

1915 First ASME Boiler Code (now Sect. I)1924 First Unfired Pressure Vessel Code (now Sect. VIII)1963 First Proposal for Nuclear Code (Sect. III)1968 Alternative Rules for Unfired Pressure Vessels (Sect. VIII Div. 2)1997 High Pressure Code (Sect. VIII Div. 1)2007 Re-written Sect. VIII Div. 2

Today 28 books embedded into the US standardization system Continuously new editions published Code Case System

700 technical committees continuously working (consensus process)

Over 3800 Volunteers (~10% International)

Until 1971 certification activities limited to USA and Canada, meanwhile expanded to 75+ countries, accepted in 100+ countries, and translated into Chinese, French, Japanese, Korean, Portuguese, Spanish and Swedish

Strong relation to in-service initiatives and user groups like API, NACE, ….

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ASME Life Cycle Management

Risk Analysis and Inspection Planning

Codes/Standards

New Construction Codes and Standards

Inspection Findings?

Repair or Replace?

Repair or Replacement per In-Service Repair Codes and Standards

Sucessful?

Fitness for ServiceCodes and Standards

Decommission

Yes

Yes

YesNo

No

No

Results

Results

Inspect

Operate

Sect. VIIIAPI 620

PCC-3API 580API 510

NBIC API 579

PCC-2NBIC

API 510PTB-2-2009 Guide to Life Cycle Management of Pressure Vessel Integrity

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Content

Introduction

Updated considerations regarding- Material- Allowable stress values- Design Basics

Summary

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Material: Essential Safety Requirements

Source:http://ec.europa.eu/enterprise/sectors/pressure-and-gas/documents/ped/materials/index_en.htm

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PED: Particular Material Appraisal

Source:http://ec.europa.eu/enterprise/sectors/pressure-and-gas/documents/ped/materials/index_en.htm

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ASME Code: Listed Material, e.g. VIII-1

UNS (Unified Numbering System)Sxxxxx: Heat and corrosion resistant (stainless) steels

SA312

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Some Supplementary Requirements to SA-516

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Summary Material

Both systems (EN and ASME) generally allow the use of each other material

In case material shall be used in both systems dual certified material

To specify the material in a sufficient and economic way, specific comparison between the EN and ASME Specifications is required. Do not rely on general statements.

Material specification shall be mainly driven by the needs for the intended service (good sources are standards like API, NACE, Dechema, …)

Make use of supplementary requirements in the specifications.

Do not over-specify

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Specification example

Service susceptible to Polythonic Acid Stress Corrosion CrackingStabilizing Heat Treatment and IGC are recommendations from API and NACEstandards

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Content

Introduction

Updated considerations regarding- Material- Allowable stress values- Design Basics

Summary

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Allowable Stresses EN 13445

below the creep range

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Allowable Stresses ASME Sect. II Part D

ST Tensile strength at room temperatureSY Yield strength (0.2%) at room temperatureRT ratio of the average temperature dependent trend curve value of tensile strength to the room

temperature tensile strengthRY ratio of the average temperature dependent trend curve value of yield strength to the room

temperature yield strengthSRave Ave. rupture stress 100,000 hoursSRmin Min. rupture stress 100,000 hoursSC Ave. stress to cause a creep rate of 0.01%/1,000 hoursFavg Below 815°C = 0.67

for Sect. VIII, Div. 1

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Allowable Stresses ASME Sect. II Part D

for Sect. VIII, Div. 2

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Updated allowable stress value comparison

0

20

40

60

80

100

120

140

160

180

0 100 200 300 400 500 600

Allo

wab

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tres

s [M

Pa]

Temperature °C

Plate SA/EN 10028 P295GH and EN 13445 EN 10028 P295GH (1.0481)

EN 13445 Allowable (100 - 150 mm)

Sect. VIII Div. 1 Allowable (100 -150 mm) max: 500°Cmax: 538°C

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Updated allowable stress value comparison

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Allo

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Temperature °C

Plate SA-516 Gr. 70 and P295GH (1.0481)

EN 13445 Allowable (< 16 mm)

EN 13445 Allowable (60 - 100 mm)

Sect. VIII Div. 2 Allowable

Sect. VIII Div. 1 Allowable max: 500°Cmax: 538°C

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Updated allowable stress value comparison

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0 100 200 300 400 500 600 700 800

Allo

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s [M

Pa]

Temperature °C

Plate SA-240 304 and X5CrNi1810 (1.4301)

EN 13445 Allowable

Sect. VIII Div. 2 Allowable

Sect. VIII Div. 1 Allowable 0.9 SY

Sect. VIII Div. 1 Allowable

max: 550°C

max: 816°C

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Summary Allowable Stresses

Do not rely on general statements. Specifically compare the material at the intended temperature

When using the ASME code always consider the option for using Sect. VIII, Div. 2

When comparing austenitic steels also consider the 90% yield option provided for many materials

The ASME system is much less susceptible to user errors by providing simple tables with the allowable stresses (no need for calculation of the allowable stress)

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Content

Introduction

Updated considerations regarding- Material- Allowable stress values- Design Basics

Summary

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Design Concepts

EN 13445 ASME VIII-1 ASME VIII-2

Design by Formula √ √+ App. + Codes Cases √

Design by Analysis √ No, but U-1 √

Design by Fracture Mechanics √ No No

Loads other than Pressure √ No, but UG-22 √

Fatigue Design √ No, but UG-22 √

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Allowable Design Cycles

EN 13445 ASME VIII-2Example 3 33 576 > 5x106

Example 4 Batch 13 100 200x106

Example 4 Stirrer 212 000 > 1011

SNP-PT-007, Comparison of Pressure Vessel Codes ASME Section VIII and EN 13445, Technical, Commercial, and Usage Comparison, Design Fatigue Life Comparison

EN 13445 ASME VIII-2Example 3 RT+VT 33 576 N/A

Example 3 no NDT 8 600 6 450

Example 4 Batch 13 100 12 500

Example 4 Stirrer 212 000 1 100 000

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Content

Introduction

Updated considerations regarding- Material- Allowable stress values- Design Basics

Summary

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ASME Cost comparison (excerpt)

Cost

SNP-PT-007, Comparison of Pressure Vessel Codes ASME Section VIII and EN 13445, Technical, Commercial, and Usage Comparison, Design Fatigue Life Comparison

Costs in a Clean Fuel Project

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The ASME answer

Overall number of registrations on file at the end of 2010 was 45.713.776Comparison of Pressure Vessel Codes ASME Sect. VIII

and EN 13445, Technical, Commercial, and Usage Comparision, Design Fatigue Life ComparisonSTP-PT-007, Dec. 2006

National Board Bulletin, Fall 2010

0200000400000600000800000

1000000120000014000001600000

2006 2007 2008 2009 2010

1.495.632 1.572.626 1.563.665

1.357.3791.211.711

Total Number of Boilers and PV registered with the National Board

% ASME VIII-1

ASME VIII-2

Others

EN 13445

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Downstream new projects (in $ bn)

EIC Database

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ASME Stampholders

[1023][1004]

[20]

[3496][3467]

[1388][1087]

[116]

[14][9]

[28]

[ ] - 04/2011[ ] - 07/2010

[82][77]