GEN 253 DEP 31.38.01.11-GEN., SECTION 3.5

ABB Lummus Global B.V.

GENERAL ENGINEERING NOTE

Shell ECC Project SingaporePROJ. NO.: 04217 G.E.N. NO.: 253DEPT. : 120.431 DISTRIBUTION: PARTICIPANTS+

DATE OF DISCUSSION : 2007-01-18 SHELL: LGN:

PARTICIPANTS : Doug ShineHans StegemanTheo TanArie de BruijnToon KuysNorbert Kouwenhoven

Mike LuremanDoug ShineHans StegemanTheo Tan

Wim MulderMaarten NoordzijArie de BruijnToon KuysNorbert Kouwenhoven

THE FOLLOWING WAS DISCUSSED:DEP 31.38.01.11-Gen., section 3.5, Sentence: Formal computer flexibility analysis shall be made of all critical systems, which include the following;

AGREED/PROPOSED: Paragraph shall be changed to read: Formal flexibility analysis shall be made of all critical systems, which includes the following:All piping layouts shall be checked for load effects, flexibility and stress as laid down in ASME B31.3 or B31.1. The criticality for review is rated by H (high), M (medium) and L (low). Formal flexibility analysis may be performed by means of visual inspection, graphs, tables, simpli-fied calculations or CAESAR II computer analysis.All piping with criteria H generally will require a formal computer CAESAR analysis, based on the layout review and judgment of the Lead Stress Engineer. Additionally, piping within criteria M and L may also need formal computer analysis as a result of layout review and Stress Engineers judg-ment. Records of all analysis shall be made available.Criteria for H :

Pipes subject to authority approval E9000 category HP (Systems require reports for Authority Review)Pipes DN500 and larger with temp. > 120°CPipes DN750 and larger with temp. > 65°CProcess pipes DN 80 and larger if connected to rotating equipment with -45°C > temp. > 100°CPipes DN80 and larger connected to air-cooled heat exchangers with -45°C > temp. > 100°CPipes DN80 and larger connected to pulsating equipmentPipes to and from boilers and heaters with temperature ranges below.In cases where differential settlement of equipment and/or supports is expectedwith absolute differential settlement > 5mm and pipe size > DN300Pipes subject to slug flow: Lines DN150 through DN300 : Vslug > 10 m/s

Lines >= DN350 : Vslug > 8 m/sWater hammer: pipe with length larger than 500 m is evaluated by process for potential surge(water hammer) by a full surge analysis and transient analysis.Surge forces exceeding 25 x pipesize(DN) [N] shall be included in static and quasi-static or dynamic stress analysisPipes for two-phase flow only where slug sensitive with restrictions as above.Flare pipes DN100 and larger with temperature ranges below.Pipes subjected to relief loads, where inlet pressure > 3.5bargor where relief valve outlet piping is not fixed/axially.

LGN SFOR 10-1900-04.500 (2003-01-31) “” E-00000-TN-3323-0235 Rev.0.00 Page 1 of 4



Process regeneration pipes with larger than 7000 cycles / lifetimePipes DN200 and larger connected to large diameter storage tanks.Pipes DN80 and larger with pressure class 1500lbs and higherPipes DN50 and larger with pressure class 2500lbs and higherA principle check on vents and drains for classes 600lbs and aboveTemperature ranges:Stainless Steel pipes DN150 and smaller with temp. <-150°CStainless Steel pipes DN350 and smaller with temp. < -100°CStainless Steel pipes DN400 and larger with temp. < -50°C Carbon Steel / Low Chrome pipes DN80 and larger with temp. >350°CCarbon Steel / Low Chrome pipes DN200 and larger with temp. >260°CCarbon Steel / Low Chrome pipes DN400 and larger with temp. >180°C Stainless Steel pipes DN80 and larger with temp. >260°CStainless Steel pipes DN200 and larger with temp. >180°CStainless Steel pipes DN400 and larger with temp. >120°C

Criteria for M (where not covered by Criteria H) :pipes DN 500 and larger ;process pipes DN 80 and larger if connected to rotating equipment;pipes connected to air-cooled heat exchangers ;pipes connected to pulsating equipment;;pipes to and from boilers and heaters ;in cases where differential settlement of equipment and/or supports is expected;process regeneration pipes;pipes where engineered items are required like spring supports, expansion joints, snubbers etc.;pipes subject to slug flow or water hammer;if required by local regulations;pipes for two-phase flow;flare pipes DN 100 and larger;pipes subjected to relief loads;pipes DN 80 and larger in very toxic service operating at temperatures above 200 ºC;

Criteria for L:All remaining.

Recording methodsThe Criterion Category for al pipe line numbers shall be recorded in (a copy of) the Line Designa-tion Sheets by separate column referring H, M or LThe method of review shall be marked on each individual work hard copy of the Pipe Stress and Support Isometric. Alternatively PIAS or other lists may be used for recording.Quality records must be auditable, methods and computer printouts available.

BACKGROUND/JUSTIFICATION:Achieving method to have quality records for Stress review on complete piping design.All based on conference meeting and e-mail exchange between : Doug Shine, Theo Tan, Norbert Kouwenhoven and Toon Kuys




IMPACT ON COST AND SCHEDULE

BDEP Phase

EPCm Phase

Impact on schedule (N) (N) Indicate impact as follows:Positive (Pos): For schedule, cost or man-hour reductionsNegative (Neg): For schedule, cost or man-hour increase.None (N): No impactDo not leave empty boxes

Impact on cost (N) (N)

Engineering hours (N) (N)

Process hours (N) (N)

SHELL COMMENT:

Attachments:


ORIGINATOR: APPROVED BY: Michel Bochardt

DATE: DATE:



Shell ECC Project SingaporePROJ. NO.: 04217 G.E.N. NO.: 253

AGREEMENT ROUTING SLIP

JV AGREEMENT PRINCIPALS AGREEMENTFunction Name Agreed

Y/NSignature(1)

Function Name Agreed Y/N

Signature(1)

Process Manager Gerard Scheers □ Lead Process Eng Martin Vrolijk □HSE Engineer Guido van der Lans □ □Metallurgist Maarten Langbroek □ □

□ □□ □□ □□ □□ □□ □□ □

Engineering Manager Wim Mulder Y □ Engineering Manager Alec Miljkovic Y □Mechanical Hilbrand Gringhuis □ Mechanical Hans Stegeman Y □Instrumentation Gijs Houwaart □ Instrumentation Peter Beerepoot □Electrical Piet Overbeek □ Electrical Jan Beertsen □Piping Arie de Bruin Y □ Piping Doug Shine Y □CSA Cees van der Ende □ CSA Mike Castel □

(1) In case of approval by e-mail, give date of e-mail.


Documents

GEN 253 DEP 31.38.01.11-GEN., SECTION 3.5