basis of design

Khazzan Project Criteria

Basis of Design Civil, Structural and Architectural Design

Revision History Amendment Date

Revision Number

Amender Initials

Amendment

08/04/2014

A01H

13/05/2014

B01H

SS

Section 1.2, 1.3,1.4, 2.2, 2.3, 3.3.2, 3.3.3, 4.2, 4.4, 5.1, 5.7.2, 5.9, 5.11.2, 5.15, 10.3, 11.5, 12, 12.1, 12.2, 16, 16.2, 16.3, 16.5, 16.6, 16.7

05/06/2014

B02H

SS

Section 1.3, 2.3, 3.0, 3.3.1, 3.3.2, 3.3.4, 4.1, 4.2, 4.4, 5.1, 5.7.1, 11.5, 11.5.2, 11.8, 15.6, 16.0, 16.3, 17.2

17/06/2014

B03H

SS

Section 2.3, 3.3.2, 5.1, 5.14.7

16/07/2014

B04H

SS

Section 2.3, 3.3.4, 5.7.1, 15.1

Related documents Document number KZ01-CV-BOD-14-0001

Document name

Description of Content

BOD CSA Design Criteria

Holds Section Number

Short Description of Hold

3.3.2

KZ01-CV-BOD-53-0005: Basis of Design for Hydrology & Flood Mitigation

5.1

Use of Fendolite as PFP material

15.6

Drainage from bunded area

Definitions and Abbreviations Term

KZ01-CV-BOD-53-0001

Comment

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Basis of Design Civil, Structural and Architectural Design

Table of Contents 1.

INTRODUCTION ............................................................................................................................. 6 1.1 ....... SCOPE ..................................................................................................................................................... 6 1.2 ....... BRIEF PROJECT DESCRIPTION ............................................................................................................ 6 1.3 ....... DEFINITIONS ........................................................................................................................................... 6 1.4 ....... INTERPRETATION .................................................................................................................................. 8 1.5 ....... LANGUAGE .............................................................................................................................................. 8 1.6 ....... UNITS OF MEASUREMENT .................................................................................................................... 8 1.7 ....... QUALITY ASSURANCE ........................................................................................................................... 8 1.8 ....... HSSE ........................................................................................................................................................ 8 1.9 ....... DESIGN LIFE............................................................................................................................................ 8

2.

APPLICABLE DOCUMENTS.......................................................................................................... 9 2.1 ....... ORDER OF PRECEDENCE ..................................................................................................................... 9 2.2 ....... APPLICABLE COMPANY SPECIFICATIONS AND STANDARDS ......................................................... 9 2.3 ....... APPLICABLE PROJECT SPECIFICATIONS, STANDARDS AND DRAWINGS ................................... 10 2.4 ....... APPLICABLE INTERNATIONAL CODES AND STANDARDS .............................................................. 12

3.

DESIGN REQUIREMENTS ........................................................................................................... 16 3.1 ....... NATURE OF THE SITE .......................................................................................................................... 16 3.2 ....... RISK CONSIDERATIONS IN DESIGN................................................................................................... 17 3.3 ....... EXTREME EVENTS ............................................................................................................................... 17

4.

ENVIRONMENTAL TOPOGRAPHICAL & GEOTECHNICAL DATA............................................ 19 4.1 ....... AMBIENT TEMPERATURE AND RELATIVE HUMIDITY ...................................................................... 19 4.2 ....... WIND ...................................................................................................................................................... 19 4.3 ....... TOPOGRAPHY....................................................................................................................................... 20 4.4 ....... SOIL INVESTIGATIONS ........................................................................................................................ 20 4.5 ....... POTENTIALLY UNSTABLE NATURAL GROUND ................................................................................ 20 4.6 ....... GROUND WATER LEVELS OF NATURAL GROUND .......................................................................... 20 4.7 ....... SITE DATUM AND COORDINATES ...................................................................................................... 20 4.8 ....... GEOHAZARDS ....................................................................................................................................... 20

5.

DESIGN LOADS ........................................................................................................................... 21 5.1 ....... DEAD LOAD ........................................................................................................................................... 21 5.2 ....... LIVE LOAD ............................................................................................................................................. 21 5.3 ....... ERECTION LOAD................................................................................................................................... 23 5.4 ....... PRODUCT OR FLUID LOAD ................................................................................................................. 23 5.5 ....... OPERATING LOAD ................................................................................................................................ 23 5.6 ....... TEST LOAD ............................................................................................................................................ 23 5.7 ....... PIPE LOAD ............................................................................................................................................. 23 5.8 ....... IMPACT LOAD........................................................................................................................................ 24 5.9 ....... SAND LOAD ........................................................................................................................................... 24 5.10 ..... TRUCK, CRANE AND MOVING LOADS ............................................................................................... 25 5.11 ..... BLAST LOAD .......................................................................................................................................... 26 5.12 ..... DYNAMIC LOAD..................................................................................................................................... 26 5.13 ..... SURGE LOAD ........................................................................................................................................ 27 5.14 ..... WIND LOAD............................................................................................................................................ 27 5.15 ..... SEISMIC LOAD ...................................................................................................................................... 28

6.

THERMAL LOADS & MAINTENANCE LOADS AND DIFFERENTIAL SETTLEMENTS ............. 29 6.1 ....... THERMAL LOAD .................................................................................................................................... 29 6.2 ....... DESIGN TEMPERATURE ...................................................................................................................... 29

KZ01-CV-BOD-53-0001

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6.3 ....... DESIGN ATMOSPHERIC TEMPERATURE .......................................................................................... 29 6.4 ....... FRICTION COEFFICIENTS ................................................................................................................... 29 6.5 ....... PIPING FRICTION LOADS .................................................................................................................... 30 6.6 ....... MAINTENANCE LOADS ........................................................................................................................ 30 6.7 ....... BUNDLE PULL FORCE .......................................................................................................................... 30

7.

EARTH AND WATER PRESSURE ............................................................................................... 31

8.

LOAD AND LOAD COMBINATIONS............................................................................................ 32 8.1 ....... LOADS .................................................................................................................................................... 32 8.2 ....... LOAD COMBINATIONS ......................................................................................................................... 32

9.

CHOICE OF STRUCTURAL MATERIAL ...................................................................................... 35 9.1 ....... PIPE RACK STRUCTURES ................................................................................................................... 35 9.2 ....... STRUCTURES ....................................................................................................................................... 35 9.3 ....... SHELTERS ............................................................................................................................................. 35

10. STEEL STRUCTURES ................................................................................................................. 36 10.1 ..... GENERAL ............................................................................................................................................... 36 10.2 ..... DEFLECTION LIMITATIONS ................................................................................................................. 36 10.3 ..... DEFLECTIONS ....................................................................................................................................... 36

11. FOUNDATIONS AND REINFORCED CONCRETE WORKS ........................................................ 38 11.1 ..... CONCRETE GRADES, COVER AND REINFORCEMENT ................................................................... 38 11.2 ..... ANCHOR BOLTS, SHEAR KEYS AND OTHER CONCRETE INSERTS .............................................. 38 11.3 ..... GROUT ................................................................................................................................................... 38 11.4 ..... FIRE RESISTANCE OF CONCRETE .................................................................................................... 38 11.5 ..... FOUNDATION DESIGN ......................................................................................................................... 39 11.6 ..... GROUND BEARING FOUNDATIONS ................................................................................................... 41 11.7 ..... STABILITY RATIOS................................................................................................................................ 42 11.8 ..... SLIDING STABILITY AND UPLIFT ........................................................................................................ 42 11.9 ..... ALLOWABLE SETTLEMENTS ............................................................................................................... 43 11.10 ... HORIZONTAL VESSEL SUPPORTS ..................................................................................................... 43 11.11 ... CONCRETE BASINS AND PITS ............................................................................................................ 44 11.12 ... PIPE SLEEPERS .................................................................................................................................... 44 11.13 ... TRANSFORMER BASES ....................................................................................................................... 44 11.14 ... MACHINE PLINTHS ON CHEMICALLY RESISTANT FLOORS ........................................................... 44

12. FOUNDATIONS & STRUCTURES SUPPORTING MACHINERY ................................................. 45 12.1 ..... DESIGN CRITERIA FOR RECIPROCATING MACHINERY .................................................................. 46 12.2 ..... DESIGN CRITERIA FOR ROTATING MACHINERY ............................................................................. 46 12.3 ..... ANALYSIS OF VIBRATIONS DUE TO UNBALANCED FORCES ......................................................... 47

13. COMPOSITE CONSTRUCTION ................................................................................................... 49 13.1 ..... DESIGN .................................................................................................................................................. 49 13.2 ..... MATERIALS ............................................................................................................................................ 49 13.3 ..... CONSTRUCTION ................................................................................................................................... 49

14. BRICKWORK AND MASONRY .................................................................................................... 50 14.1 ..... DESIGN .................................................................................................................................................. 50 14.2 ..... MATERIALS ............................................................................................................................................ 50 14.3 ..... TRANSPORT, STORAGE AND CONSTRUCTION ............................................................................... 50

15. DRAINAGE, FLOOD PREVENTION AND SERVICE TRENCHES ............................................... 51 15.1 ..... FLOOD PREVENTION ........................................................................................................................... 51 15.2 ..... SITE DRAINAGE .................................................................................................................................... 51 KZ01-CV-BOD-53-0001

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15.3 ..... FIREWATER ........................................................................................................................................... 51 15.4 ..... SEWER AND DRAINAGE DESIGN ....................................................................................................... 51 15.5 ..... CONCRETE DRAIN CHANNELS, SERVICE TRENCHES & PITS ....................................................... 51 15.6 ..... DRAINAGE FROM BUNDED AREA ...................................................................................................... 52

16. ROADS AND PAVING .................................................................................................................. 53 16.1 ..... ON-PLOT ASPHALT ROADS ................................................................................................................. 53 16.2 ..... ROAD GEOMETRY ................................................................................................................................ 53 16.3 ..... AVAILABILITY ........................................................................................................................................ 54 16.4 ..... DRAINAGE ............................................................................................................................................. 54 16.5 ..... PREDICTED TRAFFIC FLOWS ............................................................................................................. 54 16.6 ..... TRAFFIC SIGNS & ROAD MARKINGS ................................................................................................. 54 16.7 ..... GEOTECHNICAL DATA ......................................................................................................................... 54

17. TANK PAD FOUNDATIONS AND BUND WALLS ....................................................................... 55 17.1 ..... TANK PAD FOUNDATIONS ................................................................................................................... 55 17.2 ..... TANK BUNDS AND BUND WALL DESIGN ........................................................................................... 56 17.3 ..... EQUIPMENT SHELTERS ...................................................................................................................... 57 17.4 ..... ACCESS ................................................................................................................................................. 57

18. BUILDINGS .................................................................................................................................. 58 18.1 ..... EQUIPMENT SHELTERS ...................................................................................................................... 58 18.2 ..... ACCESS ................................................................................................................................................. 58

19. EARTHWORKS, BACKFILLING AND SLOPE PROTECTION..................................................... 59 19.1 ..... SLOPE STABILITY ANALYSIS .............................................................................................................. 59

20. PILES............................................................................................................................................ 60 20.1 ..... FOUNDATIONS SUPPORTED ON PILES, CAISSONS, DEEP PIERS OR SLEEPER WALLS: ......... 60 20.2 ..... MAXIMUM PRESSURE .......................................................................................................................... 60 20.3 ..... GENERAL ............................................................................................................................................... 61 20.4 ..... SITE CONDITIONS AND INVESTIGATIONS FOR PILED FOUNDATIONS ......................................... 61 20.5 ..... BEARING PILES..................................................................................................................................... 61 20.6 ..... PILE LOADS AND SAFETY FACTORS ................................................................................................. 61 20.7 ..... DESIGN OF BEARING PILES ................................................................................................................ 61 20.8 ..... DESIGN OF PILES TO RESIST LATERAL LOADING .......................................................................... 61 20.9 ..... PILES TO RESIST UPLIFT .................................................................................................................... 61 20.10 ... PILED STRUCTURES AND PIPE RACKS ............................................................................................ 62 20.11 ... PILE GROUP ACTION ........................................................................................................................... 62 20.12 ... DIFFERENTIAL SETTLEMENT ............................................................................................................. 62

KZ01-CV-BOD-53-0001

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Basis of Design Civil, Structural and Architectural Design

"INSPECTOR" – the agency appointed by COMPANY or CONTRACTOR to carry out inspection in a VENDOR’s / SUPPLIER’s premises. “EQUIPMENT” shall mean all materials, machinery, apparatus, supplies, property (real or personal), and equipment to be supplied by CONTRACTOR GROUP pursuant to the CONTRACT and forming or intending to form a part of the PERMANENT WORKS but shall exclude any PLANT. "OTHER CONTRACTOR" shall mean any contractor, other than members of CONTRACTOR GROUP, who has entered into a contract with COMPANY (a) to provide goods or services or perform work at the WORKSITE; or (b) to provide goods or services or perform work in connection with the WORK. "OTHER CONTRACTOR GROUP" shall mean any OTHER CONTRACTOR, its subcontractors of any tier, its and their AFFILIATES and its and their respective directors, officers and employees (including agency personnel) and agents, but shall not include any member of COMPANY GROUP or CONTRACTOR GROUP. “PERMANENT WORKS” shall mean the property arising from the WORK to be erected, constructed and completed by CONTRACTOR in accordance with CONTRACT, including without limitation all EQUIPMENT and COMPANY PROVIDED ITEMS. "PLANT" shall mean all materials, machinery, apparatus, supplies, property and equipment which is owned, leased, rented, chartered or operated by CONTRACTOR GROUP for the purpose of performing the WORK but not incorporated into the PERMANENT WORKS. “QUALITY ASSURANCE” – all those planned and systematic actions (QA) necessary to ensure that a product or service will satisfy contractual requirements for quality. “SITE” shall mean the WORKSITE within Block 61 in the Sultanate of Oman at which the PERMANENT WORKS are to be located. "SUBCONTRACT" shall mean any contract of any tier for the performance or supply of any part of the WORK excluding the CONTRACT. "SUBCONTRACTOR" shall mean any party (other than CONTRACTOR) to a SUBCONTRACT including its employees and agents. “SUPPLIER” shall mean any SUBCONTRACTOR that is engaged under a SUBCONTRACT for the supply of EQUIPMENT. "WORK" shall mean all work that CONTRACTOR is required to perform in accordance with the provisions of the CONTRACT. "WORKSITE" shall mean the location or locations on, under, in, or through which the WORK is to be performed by CONTRACTOR GROUP and shall include, without limitation, the SITE and all other facilities or locations of CONTRACTOR GROUP or the facilities or locations of COMPANY or any OTHER CONTRACTORS at which WORK is to be performed. "VENDOR" shall have the same meaning as SUPPLIER. Abbreviations: Abbreviation

Definition

CPF

Central Processing Facility

EWT

Early Well Test

ETP

Company Group Engineering and Technical Practices

GIS

Group Guidance on Industry Standards

PDO

Petroleum Development Oman

HDPE

High Density Poly-Ethylene

HSSE

Health, Safety, Security and Environment

PHSA

Probabilistic Seismic Hazard Assessment

KZ01-CV-BOD-53-0001

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1.4

Basis of Design Civil, Structural and Architectural Design

INTERPRETATION The word “shall” is used to indicate that a provision is mandatory. The word “should” is used to indicate that a provision is not mandatory, but recommended as good practice. Words importing the singular include the plural and vice versa where the context so requires. All references to the masculine gender shall be deemed to include the feminine gender and vice versa. The headings in this document are for ease of reference and shall not be deemed to be part of or be taken into consideration in the interpretation or construction of this document. All the sections of this document shall be read and construed together as one document, in the event of ambiguity or contradiction between sections, the most stringent shall be applied.

1.5

LANGUAGE English is the nominated language to be used on the project. Labels, nameplates, and operator interfaces shall be in English. Safety instructions and warnings which need to be understood by nonoperations staff shall also be in Arabic.

1.6

UNITS OF MEASUREMENT All technical data shall be presented in the International System of Units (SI) as defined in the project document: Basic Engineering Design Data – KZ01-EN-BOD-14-0002.

1.7

QUALITY ASSURANCE All design, fabrication, logistics operations, construction, installation and testing shall be carried out in conformance with the Quality Management Plan – KZ01-QA-PLN-14-0001, Supplier Quality Management Requirement - KZ01-QA-SPE-14-0003, Construction Master Quality Programme - KZ01-CV-SPE-140024, Quality Management Requirements for Materials and Equipment Specification and Construction Specifications - KZ01-QA-SPE-14-0008.

1.8

HSSE All design, fabrication, logistics operations, construction, installation and testing shall be carried out in conformance with section IV of the Request for Quotation Document for the EPC Contract - “Health, Safety, Security and Environment Requirements”.

1.9

DESIGN LIFE The design life shall be 30 years.

KZ01-CV-BOD-53-0001

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2.

APPLICABLE DOCUMENTS

2.1

ORDER OF PRECEDENCE

Basis of Design Civil, Structural and Architectural Design

The precedence applying for use of the Codes, Standards, Specifications and Regulatory requirements for this Project is as follows: • Sultanate of Oman Governmental Requirements • Project Philosophies and Specifications as approved by Company • Company Group Engineering and Technical Practices (ETPs) and Group Guidance on Industry Standards (GIS) • International Engineering Standards and Practices • Vendor Standards and Procedures • In the event of an inconsistency, conflict or discrepancy between any of these Codes, Standards, Specifications and Regulatory Requirements, the most stringent and safest requirement applicable to the Project shall prevail to the extent of the inconsistency, conflict or discrepancy. However, in the event that compliance with any such Codes, Standards, Specifications or Regulatory Requirements would result in contravention of any applicable other Codes, Standards, Specifications or Regulatory Requirements, CONTRACTOR shall promptly draw this matter to COMPANY’s attention and shall follow COMPANY’s directions. Any inconsistencies critical to the design shall be brought to the attention of the COMPANY Engineering Manager for resolution. The edition of the Reference Documents shall be the edition current at the effective date of the AGREEMENT or CONTRACT. The use of later versions shall be agreed with COMPANY. Latest applicable in country codes (Sultanate of Oman Highway Design Manual etc…), regulations, requirements including statutes of jurisdiction authorities for the works, applicable COMPANY Engineering Practices shall apply. Where options exist in any Codes, Standards and Specifications, CONTRACTOR shall highlight in his designs and proposals which option has been selected, where this is not clarified in COMPANY documents. CONTRACTOR shall demonstrate that the selection is appropriate. Where directed by Discipline Basis of Design documents, design and construction shall be carried out in accordance the principal suite of European codes and standards listed below and documents referenced therefrom. In such cases the Contractor will be directed as to which other documents shall be complied with in their entirety or in part. Use of alternative Codes, Standards and Practices listed in this document is acceptable. However, the Contractor shall, in each such case, demonstrate line by line how the requirements of the principal suite of Codes, Standards and Practices are fully satisfied by the alternative proposed documents. CONTRACTOR shall provide a list of Codes and Standards proposed for design to COMPANY for review. Reference shall be made to additional documents as directed as indicated in this document. Where any aspect of design is not adequately covered by the listed documents, CONTRACTOR shall propose a suitable Code or Standard for use in design. Where approved, this document shall apply. Otherwise the CONTRACTOR shall design to Standard as directed by COMPANY. The latest revisions of the Codes and Standards listed and associated references current at the Contract signature date shall be followed, the use of later revisions shall be agreed with COMPANY. 2.2

APPLICABLE COMPANY SPECIFICATIONS AND STANDARDS Design and construction shall take full account of all documents provided by COMPANY, including all documents referenced from the provided documents. This applies irrespective of whether the documents are included in the lists of applicable COMPANY documents or other applicable documents given below.

KZ01-CV-BOD-53-0001

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TABLE 2.1 - COMPANY DOCUMENTS Document Number

2.3

Title

Revision

GP 04-10

Guidance on Practice for Drainage Systems

22 Feb 06

GP 04-20

Guidance on Practice for Civil Engineering

22 Feb 06

APPLICABLE PROJECT SPECIFICATIONS, STANDARDS AND DRAWINGS TABLE 2.2 - PROJECT SPECIFICATIONS, STANDARDS AND DRAWINGS Document Number

Title

KZ01-EN-BOD-14-0002

Basic Engineering Design Data

KZ01-EN-BOD-14-0011

Environmental Data Basis

KZ01-EV-BOD-14-0004

Environmental Basis of Design Update

KZ01-EV-SOR-14-0001

Statement of Requirements for Permitting

5074640/GTG.2008157/R. 001

Khazzan/Makarem Gas Development Project Block 61, Oman Engineering Terrain Evaluation, May - June 2008

KZ01-CV-REP-P2-0006

Desk Study - Engineering in Sulphate Rich Ground

KZ01-CV-REP-P2-0007

Atkins Seismic Hazard Desk Study

KZ01-CV-REP-53-0003

Geotechnical Survey Report

KZ01-CV-BOD-53-0005

Basis of Design for Hydrology & Flood Mitigation

KZ01-CV-REP-00-0001

Gathering System Engineering Terrain Evaluation and Early Works Infrastructure Site Reconnaissance, 2012

KZ01-EN-TEC-00-0004

Blast Protection for CPF Buildings

KZ01-CV-SPE-53-0008

Unpaved Road Speciation

KZ01-CV-STU-14-0004

Sand Study

KZ01-CV-STU-14-0010

Study Un-Bound In-Field Desert Roads

KZ01-CV-STU-14-0001

Hydrology Studies and Flood Estimation

KZ01-CV-STU-14-0008

Waste Management Area Leachate Study

KZ01-CV-SPE-53-0002

Specification for Concrete Materials & Construction

KZ01-CV-SPE-53-0003

Specification for Design, Fabrication and Erection of Structural Steelwork

KZ01-CV-SPE-53-0004

Specification for Sewers, Drainage and Water Mains

KZ01-CV-SPE-53-0005

Specification for Roads, Fencing and Paving

KZ01-CV-SPE-53-0006

Specification for Excavation, Backfill and Construction of Underground Services

KZ01-CV-SPE-53-0007

Central Processing Facility Architectural Specification

KZ01-CV-BOD-53-0001

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Document Number

Basis of Design Civil, Structural and Architectural Design

Title

KZ01- CV-SPE-14-0009

Central Process Facility Buildings HVAC Functional Specification

KZ01-CV-SPE-14-0010

Architectural Functional Specification EPC Contractor’s Camp

KZ01-CV-SPE-14-0011 to 0019 & 0021

HVAC Specifications

KZ01-CV-SPE-53-0010

Specification Topographical Survey

KZ01-CV-SPE-53-0001

Specification for Geotechnical Investigation

KZ01-CV-REP-14-0031

Khazzan Phase 2 Ground Investigation Geotechnical Interpretative Report

KZ01- CV-REP-14-0021

CPF, GWES & Infrastructure Foundations Options Study

KZ01- CV-REP-14-0007

Early Infrastructure Works Flood Risk Assessment

KZ01- CV-REP-14-0009

Full Site Flood Risk Assessment

KZ01-CV-TEC-P2-0001

Hot Hyper-Arid Salty Conditions: Concrete and Roads - Technical Note

KZ01- MT- PHI-14-0001

Cathodic Protection Philosophy

KZ01- MT- SPE-14-0005

Specification: Shop and Field Painting

KZ01- MT- SPE-14-0006

Specification for Fireproofing

KZ01-PL-LST-14-0002

Khazzan Well Locations List

KZ01-SE-PHI-14-0003

Philosophy - Fire and Blast Protection

KZ01-SE-PHI-14-0004

Escape, Evacuation and Muster Philosophy

KZ01-EV-PHI-14-0001

Environmental Philosophy

KZ01-SE-SPE-14-0001

Human Factors Specification

KZ01-CV-SPE-53-0011

Specification for Grouting

KZ01-MT-SPE-53-0001

Specification for Galvanising

By EPC ContractorConstruction

Specification for Hydro testing of vessels and tanks

KZ01-CV-STD-53-0002

Standard Drawings - Concrete Protection Details

KZ01-CV-STD-53-0003

Standard Drawings - Foundation Founding Layer & Backfill Details

KZ01-PI- PPL-14-1000

Central Process Facility - Overall Site Plan

KZ01- PL-LAY-14-0008

Block 61, Surface Well Locations Gathering System CRA Pipeline Layout

KZ01-CV-LAY-14-0108

Overall Road Layout Infrastructure

KZ01-CV-LAY-14-0321

Existing Road Upgrade Layout

KZ01-QA-PLN-14-0001

Quality Management Plan

KZ01-QA-SPE-14-0003

Construction Master Quality Programme - KZ01-CV-SPE-14-0024.

KZ01-QA-SPE-14-0008

Quality Management Requirements for Materials and Equipment Specification and Construction Specifications

GN 04-004

Petroleum Industry Recommended Practise on Design of Blast Resistant Buildings Final Report.

KZ01-CV-BOD-53-0001

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Document Number GN 04-005 2.4

Title Petroleum Industry Recommended Practise on Design of Blast Resistant Buildings Final Report – Commentary.

APPLICABLE INTERNATIONAL CODES AND STANDARDS Design and construction shall be carried out in accordance with the principal suite of European codes and standards listed below and documents referenced therefrom. Reference is made to additional documents as directed or referenced from the codes or as indicated in this specification. Where Euro codes are used, the relevant National Annex shall also be deemed to be applicable. The British Annexe shall be taken as the default. Note that the list below covers codes dealing with design aspects. For other codes relating to construction and materials, refer to the applicable specification.

TABLE 2.3 - APPLICABLE INTERNATIONAL CODES AND STANDARDS Document Number

Title

Rev

ISSUED BY BRITISH STANDARDS INSTITUTE AND EUROPEAN COMMITTEE FOR STANDARDIZATION General BS EN ISO 9001

Quality management systems - requirements

2008

BS EN 1090 -1 & 2

Execution of steel structures and aluminium structures

Parts 2008

BS EN 1990

Eurocode — Basis of structural design

2002

Eurocode 1: Actions on structures

Part 1-1 & 1-2 2002 Part 1-3 2003 Part 1-4 2005 Part 1-5 2004 Part 1-6 2005 Part 1-7 2006 Part 2 2003 Part 3 & 4 2006

Eurocode 2: Design of concrete structures

Part 1-1 2004 Part 1-2 2005 Part 2 2005 Part 3 2006

Eurocode 3: Design of steel structures

Part 1-1 & 12 2005 Part 1-3 & 1-4 2006 Part 1-6 & 1-7 2007 Part 1-8 1-9 & 1-10 2005 Part 1-11 2008 Part 1-12

Structures

BS EN 1991

BS EN 1992

BS EN 1993

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Basis of Design Civil, Structural and Architectural Design

Document Number

Title

Rev 2007 Part 2 2006 Part 3-1 & 3-2 2008 Part 4-1, 4-2 & 4-3 2007 Part 5 & 6 2007

Eurocode 4: Design of composite steel and concrete structures

Part 1-1 & 1-2 2005 Part 2 2005

BS EN 1996

Eurocode 6: Design of masonry structures

Part 1-1 & 1-2 2005 Part 2 & 3 2006

BS EN 1997

Eurocode 7: Geotechnical design rules)

Part 1 2004 Part 2 2007

BS EN 1998

Eurocode 8: Design of structures for earthquake resistance (Part 1 shows general rules, seismic actions and rules for buildings)

Part 1 & 2 2005 Part 3 & 4 2006

BS EN 13670

Execution of concrete structures

2010

BS 2573

Rules for the design of cranes (Part 1 shows specification for classification, stress calculation and design criteria for structures)

Part 1 1983 Part 2 1980

BS 2853

Specification for the design and testing of steel overhead runway beams

2011

BS 4592

Industrial type flooring and stair treads (Part 0 shows common design requirements and recommendations for installation)

Part 0, 1, 2, 3, 4 & 5 2006 Part 6 2008

BS 5395

Stairs (Part 1 shows code of practice for the design of stairs with straight flights and winders; Part 3 shows code of practice for the design of industrial type stairs, permanent ladders and walkways; Part 4 shows stairs for limited access)

Part 1 2010 Part 2 1984 (R 2011) Part 3 1985

BS 6180

Barriers in and about buildings – Code of practice

2011

BS 8007

Design of Concrete Structures for Retaining Aqueous Liquids

1987 (R 2008) Withdrawn

BS EN ISO 3766

Construction drawings Simplified representation of concrete reinforcement

BS EN ISO 14122

Safety of machinery - Permanent means of access to machinery

Part 1, 2 & 3 2001 Part 4 2006

CP 2012-1

Code of practice for foundations for machinery. Foundations for reciprocating machines

1974 (R 2003) (R 2010)

DIN 4024

Machine foundations: Rigid foundations for machinery with

BS EN 1994

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(Part 1 shows general

2004

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Basis of Design Civil, Structural and Architectural Design

Document Number

Title

Rev

periodic excitation CIRIA C577

Guide to the construction of reinforced concrete in the Arabia Peninsula

Drainage and Sewerage BS EN 752

Drain & sewer systems outside buildings

2008

BS EN 12056

Gravity drainage systems inside buildings. Performance, Sanitary pipe work, layout and calculation, Roof drainage, Wastewater, Installation & testing

Parts 1 to 5 incl. 2000

CIRIA C551

Guide manual on scour at bridges and other hydraulic structures

Roads and Pavements ISSUED BY AMERICAN ASSOCIATION TRANSPORTATION OFFICIALS AASHTO GDPS

OF

STATE

HIGHWAY

AND

Guide to design of pavement structures (1993)

1993

ISSUED BY SULTANATE OF OMAN - MINISTRY OF COMMUNICATIONS Highway Design Manual Highway Design Standards 2010

2010

Oman Building Regulations ISSUED BY PROCESS INDUSTRY PRACTICES PIP STS 03001

Plain and Reinforced Concrete Specification

Current 2011

PIP STS 03600

Non-shrink Cementitious Grout Specification

Current 2011

PIP STS 03601

Epoxy Grout Specification

Current 2011

PIP STE 05121

Anchor Bolt Design Guide

Current 2011

PIP STF 05121

Fabrication and Installation of Anchor Bolts

Current 2011

PIP STF 05501

Fixed Ladders and Cages

Current 2011

PIP STE 05535

Vessel Circular Platform Detail Guidelines

Current 2011

PIP STF 05520

Details for Pipe Railing for Walking and Working Surfaces.

Current 2011

PIP STF 05535

Vessel Circular Platform Details

Current 2011

PIP STC 01018

Blast Resistant Building Design Criteria

Current 2011

Reference International Codes and Standards Use of the alternative Codes, Standards and Practices listed in the following table is acceptable. However, in each case CONTRACTOR shall demonstrate line by line how the requirements of the relevant document(s) in the principle suite of Codes, Standards and Practices are fully satisfied by the alternative proposed document. Where this is not demonstrated, CONTRACTOR shall propose additional measures to ensure compliance with the principle suite of Codes, Standards and Practices.

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Basis of Design Civil, Structural and Architectural Design

TABLE 2.4 - REFERENCE INTERNATIONAL CODES AND STANDARDS

Document No

Title

Rev

Issued by AMERICAN CONCRETE INSTITUTE ACI 318M

Building code requirements for structural concrete and commentary 2011

ACI 351.3R-04

Foundations for Dynamic Equipment

2010

ACI 530/530.1

Building code requirements and specification for masonry structures; containing building code requirements for masonry structures, specification for masonry structures and companion commentaries.

2011

ISSUED BY AMERICAN SOCIETY OF CIVIL ENGINEERS ASCE 41088

Design of Blast Resistant Buildings in Petrochemical Facilities

2010

ISSUED BY AMERICAN INSTITUTE OF STEEL CONSTRUCTION AISC 325

th

Steel Construction Manual 13 Edition

ISSUED BY AMERICAN PETROLEUM INSTITUTE API STD 620

Design and Construction of Large, Welded, Low-pressure Storage Tanks

API STD 650

Welded Steel Tanks for Oil Storage - 11th Edition

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2008

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3.

Basis of Design Civil, Structural and Architectural Design

DESIGN REQUIREMENTS This Basis of Design - Civil and Structural Criteria document gives the criteria to be used and applied in design. A partial statement of overall design requirements is given below, for ease of reference: Design shall ensure:

3.1

•

Construction work and temporary works are safe and satisfactory in all respects and at all stages in manufacture, fabrication and construction.

•

Constructed items fulfil all the intended or required functions safely and to the satisfaction of all.

•

Constructed items continue to perform in safe and satisfactory manner throughout the design life.

•

Maintenance can be carried out simply, safely and efficiently, with suitable access arrangements.

•

Any releases to the environment comply with regulations and discharge limits at all times.

•

A calculations and/or report package is produced as part of the design process which documents all decisions taken during design, shows why the decisions were correct and demonstrates fully that the item has satisfactory strength and all other properties required for performance at all times which is both satisfactory and perceived to be satisfactory. Calculations and/or report packages shall be available for review together with any documents which the calculations and/or report support.

•

Quality requirements given in documents referenced or provided by COMPANY shall be developed as part of the design process to ensure the constructed work fulfils all aspects of the design intent.

•

During design, consideration should be given to construction tolerances.

•

Design shall be sufficiently robust to allow reasonable deviation in material properties and position.

•

Contractor shall undertake economic engineering design such that member utilisation ratios typically exceeding 0.9 and to ensure the design margins are not excessively compounded.

NATURE OF THE SITE The site is in a hot, semi-arid desert area. For this reason and also the presence of gypsum, clay and other minerals in soils at this specific site, the ground has the capacity to change volume in a very significant manner under the action of water. The ground may shrink or swell or dissolve. Superficial soils are affected principally. However, significant amounts of the same minerals occur within the bedrock which will form the founding strata. Several studies and investigations have been carried out to investigate the nature of the soils and it is essential that CONTRACTOR familiarises himself fully with all the material supplied. It is essential that: •

Water is prevented from entering the soil during construction, to avoid movement following later drying.

•

Design prevents water from entering the ground during operations and maintenance.

•

Ground surfacing should prevent passage of water to the ground but, where possible, allow water vapour to escape to the atmosphere.

•

Waterproof concrete surface should be provided where spillage of water or process chemicals is expected.

•

Maintenance activities are constrained to minimise the release of water off-paving to such low levels or for such short periods that water will not penetrate the ground to any significant depth.

•

A robust design is effected which ensures that, even if the above precautions fail and water or other fluids do enter the ground, the consequences will not lead to failure, uncontrolled release of hydrocarbon or significant disruption of production. Measures must be put in place to ensure differential movements between adjacent or close building, piping, equipment or other supports are maintained within satisfactory levels throughout the facility life. Design shall document the measures taken and shall demonstrate that the risk of failure and associated cost are acceptable.

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3.2

Basis of Design Civil, Structural and Architectural Design

•

Maintenance procedures shall be agreed and documented which are sufficiently robust to adequately monitor the performance of all systems installed for water control and also adequately monitor performance and movement of supported structures.

•

Extraordinary measures are taken to protect all construction materials against the deleterious effects of salts and other minerals in the environment, to ensure the design service life is achieved

•

Effluents from the site or which enter the ground or atmosphere comply with permitted limits.

RISK CONSIDERATIONS IN DESIGN Design shall ensure that all works comply with the relevant Codes and Standards and the requirements of all Local and National Authorities. Design shall also comply with specific design criteria given in this document. Design shall, in addition, be reviewed against BP document GDP 3.1.001 - ‘Assessment, Prioritisation and Management of Risk’. Design shall be arranged, where practicable, to ensure risks fall within the ‘white’ areas on the risk matrix in Annexe 3 in that document. Risks identified shall be listed and submitted to COMPANY for review. Any risks which necessarily remain outside ‘white’ areas on the risk matrix in Annexe 3 shall be subject to mitigation as directed by COMPANY. Risks shall be mitigated to fall within the ‘white’ areas unless agreed otherwise with COMPANY for specific risks where such mitigation would be unreasonable or unachievable. It should be noted that GDP 3.1.001 applies to environmental, as well as life safety and financial consequences. Design against release of substances to the environment shall consider the chance of unforeseen spillage, damage, firefighting or other planned or unplanned human activities which could lead to releases outside permitted limits. The likely speed of detection of leakage, spillage, etc., shall also be considered.

3.3

EXTREME EVENTS Design shall consider the effects of extreme events, outside normal design Code requirements, and the design shall be adjusted accordingly. For Khazzan Project, requirements for resistance to specific selected extreme hazard events according to GDP 3.1.001 shall be interpreted as below:

3.3.1

Wind Loading Operations Group shall be advised that, where high winds are forecast, movement around the site area and to remote locations such as well sites shall be restricted. Plastic deformation of structures will be acceptable but structures shall not collapse and shall not generate any missiles, internally or externally. Structure occupants shall remain safe but the building may be beyond economic repair and may be demolished after the event.

3.3.2

Flooding Buildings within the main CPF site shall be protected by bunding or otherwise against the best estimate of the 10,000-year return period flood event. In view of uncertainties around rainfall data and survey level data, a minimum of 500mm freeboard shall be provided to bunding in all conditions. Bunds shall be carefully designed to resist the hydraulic gradients and wave actions which could occur in these conditions. For basis of flood protection design report, the following document is to be referred: KZ01-CV-BOD-53-0005

3.3.3

: Basis of Design for Hydrology & Flood Mitigation.

Fire and Blast Procedures for design in fire and blast conditions are well established. Design shall take into account the information provided by Process Safety Group, refer to KZ01-SE-PHI-14-0003 - PHILOSOPHY FIRE AND BLAST PROTECTION. Refer also to Section 5.11.2, which define the level of hazard and the required performance during and after the event, as well as documents relating to the methods of structural design such as GP 44-30 and PIP STC 01018. For calculation methods only, reference may also be made to the following BP documents which have been superseded by GP 44-30: GN-04-004

KZ01-CV-BOD-53-0001

:

Petrochemical Industry Recommended Practice on Design of Blast Page 17 of 62

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Basis of Design Civil, Structural and Architectural Design

Resistant Buildings

3.3.4

GN 04-005

:

Commentary on Petrochemical Industry Recommended Practice on Deign of Blast Resistant Buildings

KZ01-EN-TEC-00-0004

:

Blast Protection for CPF Buildings

Seismic activity As per BS EN 1998 (EC-8), ‘Seismic Hazard Study’ report and ‘Geotechnical Factual Report, Interpretative Report, Option Study and Recommendation’ (document no. KZ01-CV-REP-53-0001 & KZ01-CV-REP-53-0003), a study has been carried out to compare between effects of Wind load and Seismic load on a typical Pipe-Rack structure considering ranges of soil type (‘A’ and ‘E’), for a return period of 2475 as per table 5 of Seismic Hazard Study. The outcome of this study has shown that effect of Wind load governs over Seismic load. Hence, as agreed between CONTRACTOR and COMPANY, it has been concluded that effect of seismic load can be neglected in structural design.

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Basis of Design Civil, Structural and Architectural Design

4.

ENVIRONMENTAL TOPOGRAPHICAL & GEOTECHNICAL DATA

4.1

AMBIENT TEMPERATURE AND RELATIVE HUMIDITY Refer KZ01-EN-BOD-14-0002 For ambient temperature and relative humidity reference shall be made to the meteorological conditions presented as below. Indoor Design Operating Conditions Rooms

Summer

Winter

RH %

o Max C

o Min C

Electrical Equipment Room (Sub-station)

24

5

30 - 70

Control room

24

24

30 - 70

Design Temperatures oC

Design Temperatures HVAC systems design ambient condition

50 dry bulb 25.7 wet bulb

o Steelwork lower service air temperature shall be taken as -5 C where processes of any sort result in additional cooling 0

For structural analysis and design a temperature variation of -5 to 50 C is to be considered if the structure length is more than 25m. Notes:Where the process conditions demand higher / lower design temperature than what is required based on the ambient conditions specified above, then the more stringent design temperature should apply. 4.2

WIND For structural analysis and design a 10 minutes’ average wind speed of 25.9 m/sec is to be considered at a height of 10 m from ground level (for use with EuroCode). Height-wise variation of wind pressure as per BS EN 1991 - Part 1-4 2005 & UK National Annex :

Height [z] (m)

Pressure (kPa)