当前位置:首页 >> 建筑/土木 >>

Explanatory Notes for BC1-2008


BC 1: 2008

Explanatory Notes for BC 1: 2008
1.0 Overview
These explanatory notes explain in details the various design procedures which can be adopted during the design s

tage and their design implications based on the recommendations given in BC 1: 2008.

2.0

Design procedure

The design procedure is essentially based on the classification approach which consists of both adequacy assessment and reliability assessment of the steel materials to be used in design to BS 5950. The design implication of each class is summarised in Figure I. The differences between adequacy assessment and reliability assessment are given in Table I.

Figure I — Classification of alternative steel materials Table I — Comparison of adequacy assessment and reliability assessment Adequacy assessment 1. Requirements to meet 2. Object of assessment 3. Mode of assessment Material performance requirements, as given in Section 2 (of BC 1: 2008) Steel materials to be used in design to BS 5950 in Singapore Certification or material testing Reliability assessment Quality assurance requirements, as given in Section 3 (of BC 1: 2008) Both the steel materials and their manufacturers Factory production control certification and material test certification

? 02-2008 BCA

Explanatory Notes 1

BC 1: 2008 2.1 Adequacy assessment

The first step in the classification approach involves the adequacy assessment, i.e. verification of material adequacy against the material performance requirements given in Section 2 (of BC 1: 2008). Two modes of adequacy assessment are possible, namely certification and material testing, as further explained in 2.1.1 and 2.1.2, respectively. The differences in implementing these two modes of assessment are given in Table II. 2.1.1 Certification

Certification is the process of rigorous evaluation of the material specifications given in the British/European, American, Japanese, Australian/New Zealand and Chinese material standards, against the essential material performance requirements in Section 2 (of BC 1: 2008). A list of certified steel materials, which contains those materials with their specifications complying with the relevant material performance requirements, is derived for the convenience of the users of BC 1: 2008. The use of any steel material from this list of certified steel materials shall be considered as meeting the relevant material performance requirements given in Section 2 (of BC 1: 2008) and passing the adequacy assessment.

Action to be taken by QPs or his representatives: During the design stage, QPs shall select the steel material from the list of certified steel materials given in Appendix A of BC 1: 2008. QPs shall carry out the design and calculation using the design parameters recommended in 4.1 of BC 1: 2008, assuming the materials will be sourced from manufacturers who can meet the quality assurance requirements as well.

2.1.2

Material testing

Material testing is the process of demonstrating the adequacy of non-certified steel materials outside those considered in 2.1.1 during the design stage, through appropriate sample testing and test method as given in Appendix B of BC 1: 2008. Such testing for the purpose of adequacy assessment during the design stage shall not exempt the purchasers from performing the obligatory inspection and testing in accordance with appropriate regulations during contract execution stage. Test reports from accredited laboratory under the Singapore Laboratory Accreditation Scheme (SINGLAS) or other laboratory accredited under a mutual recognition agreement with SINGLAS are required to prove that such materials are able to comply with all the relevant material performance requirements given in Section 2 (of BC 1: 2008). When the limiting values are not given in Section 2 (of BC 1: 2008), linear interpolation shall be allowed to determine the limiting value for the test parameters of interest.

Action to be taken by QPs or his representatives: During the design stage, QPs shall engage an accredited laboratory to conduct material sample testing in accordance to Appendix B of BC 1: 2008 and submit a test report containing necessary information (see Table III) to show that the materials are in compliance with all the relevant material performance requirements given in Section 2 of BC 1: 2008. QPs shall carry out the design and calculation using the design parameters recommended in 4.2 of BC 1: 2008, again assuming the materials will be able to meet the quality assurance requirements as well.

Explanatory Notes 2

? 02-2008 BCA

BC 1: 2008 Table II — Comparison of certification and material testing as mode of adequacy assessment Certification 1. Party to take action 2. Steel materials covered BCA (action already taken) Certified steel materials, as given in Appendix A (of BC 1: 2008) Material testing QPs (action to be taken) Any steel materials not listed in Appendix A (of BC 1: 2008) manufactured to material standards which are current and confirmed, regardless of the country or region of origin QPs are to engage an accredited laboratory to conduct material testing in accordance to Appendix B (of BC 1: 2008) and show that the steel materials are in compliance with all the relevant requirements given in Section 2 (of BC 1: 2008) Class 2, if also pass the reliability assessment Class 3, and review design

3. Condition to pass the assessment

QPs are to select steel materials from the list of certified steel materials given in Appendix A (of BC 1: 2008)

4. Class of material, if pass the assessment 5. Class of material, if fail the assessment 2.2

Class 1, if also pass the reliability assessment Class 3, and review design

Reliability assessment

The second step in the classification approach involves the reliability assessment, i.e. verification of material reliability against the quality assurance requirements given in Section 3 (of BC 1: 2008). Reliability assessment to ensure the steel materials are manufactured under stringent quality assurance system shall meet the quality assurance requirements given in Section 3 (of BC 1: 2008). It shall be noted that failure in the reliability assessment shall result in the downgrading of material class to Class 3. Notes on the implementation of reliability assessment, namely factory production control certification and manufacturer test certification are given in 2.2.1 and 2.2.2. Implementation of reliability assessment are summarised in Table IV. 2.2.1 Factory production control certification

The manufacturers shall have a factory production control (FPC) system attested by an independent thirdparty certification agency acceptable to or recognised by BCA (see Annex B for the list of certification agencies acceptable to BCA and a sample of FPC certificate). Valid FPC certificates issued by the certification agency upon successful first and annual inspections shall be produced by the manufacturers as an indicator of a FPC system acceptable to BCA. General requirements on FPC are given in 3.1 (of BC 1: 2008). It shall also be noted that:ISO 9001 certificate for quality management system is complimentary, however, it is regarded as insufficient to demonstrate reliability of the FPC system for manufacturers in a production environment; FPC certificates shall form the acceptable indicator for an attested production control system in manufacturing a particular type of steel materials (see Section 2 of BC 1: 2008 for the nine types of steel materials and a sample FPC certificate in Annex B of these notes); FPC certificates to manufacture BS EN steel materials under the European Union Construction Directives or API Monograms, both which are already widely recognised in the European market and the oil and gas industry respectively, shall be considered ‘acceptable in lieu’. The FPC system of such manufacturers in manufacturing the particular type of steel materials shall be considered already attested.

-

-

? 02-2008 BCA

Explanatory Notes 3

BC 1: 2008

Action to be taken by QPs or his representatives: Upon confirmation of the source of the steel materials, QPs shall evaluate the validated copy of the valid FPC certificate, obtained either directly from the manufacturer or through the stockist or trader. The document mentioned shall also be made available for subsequent inspection by BCA, if required.

2.2.2

Manufacturer test certification

The manufacturers shall issue an authenticated test certificate for every batch of steel materials delivered as a form of quality assurance on the steel materials. Mandatory information on test results (as per 3.2.5 of BC 1: 2008) corresponding to different type of steel materials is summarised in Table III. It shall also be noted that:use of the test results of feedstock materials, if any, shall be clearly indicated; actual quantity of steel materials purchased from the stockist or trader shall be clearly indicated and the validated copy of the authenticated test certificate corresponding to the steel materials delivered shall be given to the purchaser. Table III — Mandatory test results to be indicated on manufacturer test certificate Type of steel materials Steel plates Hot rolled sections Hollow sections Steel for cold forming1 Mandatory test results Yield strength1 Tensile strength1 Elongation after fracture1 Impact energy Chemical content1, based on ladle or product analysis, of carbon, sulphur, phosphorous, silicon, manganese, copper, chromium, molybdenum, nickel, aluminium, niobium, titanium, vanadium, nitrogen and any other element intentionally added Carbon equivalent value computed based on equation1: % Mn % Cr + % Mo + % V % Cu + % Ni CEV (%) = % C + + + 6 5 15 Yield strength (bolts) Tensile strength (bolts) Elongation after fracture (bolts) Hardness (bolts, nuts and washers) Proof load stress (nuts) Chemical content, based on product analysis, of carbon, sulphur and phosphorous (bolts and nuts) Welding consumables Yield strength Tensile strength Elongation after fracture Impact energy

Non-preloaded bolting assemblies Preloaded bolting assemblies

Explanatory Notes 4

? 02-2008 BCA

BC 1: 2008 Type of steel materials Profiled steel sheets Mandatory test results Yield strength Tensile strength Chemical content, based on ladle or product analysis, of carbon, sulphur, phosphorous, silicon, manganese, copper, chromium, molybdenum, nickel, aluminium, niobium, titanium, vanadium, nitrogen and any other element intentionally added Stud shear connectors Yield strength Tensile strength Elongation after fracture Action to be taken by QPs or his representatives: Upon confirmation of the source of steel materials, QPs shall evaluate sample copy of manufacturer test certificate, obtained directly from the manufacturer or through the stockist or trader. Upon delivery of the steel materials to the site, QPs to inspect and confirm that all the mandatory information are indicated on the actual certificate. The document shall also be made available for inspection by BCA, if required.

Table IV — Comparison of implementation of factory production control certification and manufacturer test certification in reliability assessment Factory production control (FPC) certification 1. Requirements to meet 2. Object of assessment 3. Certificate to be produced by the manufacturers Factory production control, as given in 3.1 (of BC 1: 2008) and attestation checklist The manufacturers of steel materials A valid factory production control (FPC) certificate issued by certification agency acceptable to or recognised by BCA The production control and quality assurance provided by the manufacturer in producing the particular type of steel materials QPs are to evaluate the certificate*, upon confirmation of source of materials Manufacturer test certification (MTC) Manufacturer test certificates, as given in 3.2 (of BC 1: 2008) The steel materials A sample test certificate An authenticated test certificate containing complete information for every batch of steel materials delivered Quality assurance on the particular batch of steel materials delivered

4. Valid coverage of the certificate

5. Condition to pass the assessment

QPs are to evaluate the sample certificate*, upon confirmation of source of materials QPs are to evaluate the actual certificate*, which shall also specify the actual quantity of steel materials delivered

*Validated copy of certificates shall be available for inspection

? 02-2008 BCA

Explanatory Notes 5

BC 1: 2008 Factory production control (FPC) certification 6. Class of material, if pass both assessments 7. Class of material, if fail at least one of the two assessments 2.3 Manufacturer test certification (MTC)

Class 1, if pass the adequacy assessment through certification; Class 2, if pass the adequacy assessment through material testing Class 3

Summary of design procedure

Necessary actions to be taken by QPs and BCA during the various stages in the overall design procedure are summarised in Table V and Table VI. Table V — Actions to be taken by QPs and BCA for Class 1 steel materials Stage 1. Design calculation QPs Select only certified steel materials from Appendix A of BC 1: 2008 Assume* materials to be Class 1 and adopt design parameters from 5.1 of BC 1: 2008 Submit the necessary design calculation as per normal 2. Material procurement Confirm the source of steel materials Obtain a validated copy of the valid FPC certificate Obtain a sample of manufacturer test certificate to ensure all mandatory information can be provided Keep copy of above document for inspection Obtain an authenticated manufacturer test certificate (or its validated copy) and verify the compliance of the steel materials delivered to the specifications Keep copy of above document for inspection Check the certificate, if necessary Appoint a certification agency to inspect the manufacturer (optional) BCA Evaluate and approve the submission

3. Material delivery

Check the certificate, if necessary

*

It shall be noted that QPs can only assume that the materials will be Class 1 during the design calculation stage; it is therefore extremely important that QPs perform the necessary follow-up actions during the material procurement and delivery stages to confirm the materials to be Class 1

Explanatory Notes 6

? 02-2008 BCA

BC 1: 2008 Table VI — Actions to be taken by QPs and BCA for Class 2 steel materials Stage 1. Design calculation QPs Engage an accredited laboratory to conduct sample material testing in accordance to Appendix B and show that the steel materials are in compliance with all the relevant requirements given in Section 2 Assume* materials to be Class 2 and adopt design parameters from 5.2 of BC 1: 2008 Submit a copy of the test report and the necessary design calculation as per normal 2. Material procurement Confirm the source of steel materials Obtain a validated copy of the valid FPC certificate Obtain a sample of manufacturer test certificate to ensure all mandatory information can be provided Keep copy of above document for inspection 3. Material delivery Obtain an authenticated manufacturer test certificate (or its validated copy) and verify the compliance of the steel materials delivered to the specifications Keep copy of above document for inspection Check the certificate, if necessary Appoint a certification agency to inspect the manufacturer (optional) BCA Evaluate and approve the submission Request for test report from an independent inspection agency (optional)

Check the certificate, if necessary

*

It shall be noted that QPs can only assume that the materials to be Class 2 during the design calculation stage; it is therefore extremely important that QPs perform the necessary follow-up actions during the material procurement and delivery stages to confirm the materials to be Class 2

3.0

Alternative procedure

In lieu of the adequacy and reliability assessments recommended in 4.1 and 4.2 (of BC 1: 2008), a material performance-based assessment based on rigorous material testing and control might be appropriate, subject to case-by-case approval from BCA (under clause 4.4 special case of BC 1: 2008). If approved, the steel materials concerned may be treated as Class 2 materials if their adequacy and reliability can be guaranteed through rigorous control and testing plans of the materials delivery to site. As a minimum, such assessment shall include:100% material visual inspection and non-destructive testing to verify manufacturing tolerances; 100% destructive testing for all batches and heat numbers (see Table III for tests required); test reports from accredited laboratory; and a material assessment report from an independent expert consultant.

? 02-2008 BCA

Explanatory Notes 7

BC 1: 2008

Annex A

List of non-certified steel materials

This list only covers non-certified steel materials manufactured to standards given in Appendix A of BC 1: 2008. Each material in this list is non-certified because of at least one or more of the following reasons: A. Strength: Out-of-range B. Ductility: Inadequate/Unspecified C. Toughness: Inadequate/Unspecified D. Hardness: Inadequate/Unspecified E. Chemical composition: Non-permitted/Unspecified F. Manufacturing tolerance: Non-permitted/Unspecified G. Manufacturing process: Rimming steel H. Manufacturing process: Quenched & tempered steel I. Not applicable to structural use

A.1

Non-certified British/European steel materials
Specification E295 E335 E360 S185 S450J0 S890Q S890QL S890QL1 S960Q S960QL E295 E335 E360 S185 S450J0 S500Q S500QL S500QL1 S550Q S550QL S550QL1 Material standard Specification S620Q S620QL S620QL1 S690Q S690QL S690QL1 S890Q S890QL S890QL1 S960Q S960QL 3. Steel for cold forming E295 E335 E360 S185 S450J0 S600MC S650MC S700MC S550GD

Material standard 1. Steel plates

BS EN 10025-2:2004

BS EN 10025-6:2004

2. Hot rolled sections

BS EN 10025-2:2004

BS EN 10025-2:2004

BS EN 10025-6:2004

BS EN 10149-2:1996 BS EN 10326:2004

Explanatory Notes 8

? 02-2008 BCA

BC 1: 2008

A.2

Non-certified American steel materials
Specification A B C D 50 55 440 480 60 65 50 55 PSL1 A B ASTM A 1011-2007 Material standard ASTM A 606-2001 ASTM A 792-2006a ASTM A 875-2006 SS 255 SS 275 SS 340 SS 330 ST 230H ST 230L ST 255H ST 255L ST 275H ST 275L ST 340H ST 340L HSLA 480 HSLA-F 480 HSLA-F 550 HSLAS 310 HSLAS 340 HSLAS 380 HSLAS 410 HSLAS 450 HSLAS-F 410 SS 275 SS 310 SS 340 SS 380 SS 410 SS 480 SS 550 Specification

Material standard 1. Steel plates ASTM A 283-2003(07) ASTM A 514-2005 ASTM A 529-2005 ASTM A 573-2005 ASTM A 871-2001 2. Hot rolled sections ASTM A 529-2005 3. Hollow sections API 5L-2004 ASTM A 53-2007 ASTM A 268-2005a ASTM A 333-2005 ASTM A 423-1995(04) ASTM A 500-2007 ASTM A 501-2007 ASTM A 595-2006 ASTM A 618-2004 ASTM A 847-2005 4. Steel for cold forming ASTM A 109-2003 ASTM A 308-2006 ASTM A 653-2007

ASTM A 1003-2005

A B C D A Ia Ib II III ASTM A 193-2007

5. Non-preloaded bolting assemblies 1 2 3 6 8 A 8S3-B

ASTM A 194-2007b

ASTM A 307-2007b ASTM A 563-2007a SS 30 SS 33 SS 40 ASTM A 193-2007 ASTM A 194-2007b

6. Preloaded bolting assemblies 2H

? 02-2008 BCA

Explanatory Notes 9

BC 1: 2008

A.3

Non-certified Japanese steel materials
Specification SS330 SS400 SS490 SS540 SM400A SM400B SM400C SMA400AW SMA400AP SMA400BW SMA400BP SMA400CW SMA400CP SMA490AW SMA490AP SMA570P SHY 685 SHY 685N SHY 685NS SPHC SPHD SPHE SPHT 1 SPHT 2 SPHT 3 SPHT 4 SN400A SS330 SS400 SS490 SS540 SM400A SM400B SM400C SMA400AW SMA400AP SMA400BW SMA400BP SMA400CW SMA400CP SMA490AW SMA490AP SMA570P SN400A STK290 STK400 Material standard Specification STK500 STK490 STK540 STKR400 STKR490 STKN400W STKN400B SS330 SS400 SS490 SS540 SM400A SM400B SM400C SMA400AW SMA400AP SMA400BW SMA400BP SMA400CW SMA400CP SMA490AW SMA490AP SMA570P SN400A SGHC SGH340 SGH400 SGH440 SGH490 SGH540 SGCC SGCH SGCD1 SGCD2 SGCD3 SGC340 SGC400 SGC440 SGC490 SGC570 CGCC CGCH CGCD1 CGC340 CGC400 CGC440 CGC490 CGC570 SGLHC

Material standard 1. Steel plates JIS G 3101: 2004

JIS G 3466: 2006 JIS G 3475: 1996 4. Steel for cold forming JIS G 3101: 2004

JIS G 3106: 2004

JIS G 3114: 2004

JIS G 3106: 2004

JIS G 3128: 1999

JIS G 3114: 2004

JIS G 3131: 2005

JIS G 3132: 2005 JIS G 3136: 2005 2. Hot rolled sections JIS G 3101: 2004

JIS G 3136: 2005

JIS G 3302: 2005

JIS G 3106: 2004

JIS G 3114: 2004

JIS G 3312: 2005

JIS G 3136: 2005 3. Hollow sections JIS G 3444: 2006

JIS G 3321: 2005

Explanatory Notes 10

? 02-2008 BCA

BC 1: 2008 Material standard Specification SGLH400 SGLH440 SGLH490 SGLH540 SGLCC SGLCD SGLC400 SGLC440 SGLC490 SGLC570 CGLCC CGLCD CGLC400 CGLC440 CGLC490 CGLC570 SDP 1 SDP 2 SDP 3 Material standard 8. Profiled steel sheets SGHC SGCC SGCH SGCD1 SGCD2 SGCD3 SGC570 SGLHC SGLH400 SGLH440 SGLH490 SGLH540 SGLCC SGLCD SGLC400 SGLC440 SGLC490 SGLC570 Specification

JIS G 3302: 2005

JIS G 3322: 2005

JIS G 3321: 2005

JIS G 3352: 1979

A.4

Non-certified Australian/New Zealand steel materials
Specification Material standard Specification 7-460 N, R, T or A 7-490 N, R, T or A 250 300 350 400 G 500 G 550 5-490N or A 7-430 N, R, T or A AS/NZS 3678-1996 AS/NZS 1594-2002 AS/NZS 1595-1998 CA 220 CA 260 CA 350 CW 300 250 300 350 400 450

Material standard 1. Steel plates AS/NZS 1594-2002 2. Hot rolled sections AS/NZS 1679.1-1996 4. Steel for cold forming AS 1397-2001 AS 1548-1995

? 02-2008 BCA

Explanatory Notes 11

BC 1: 2008

A.5

Non-certified Chinese steel materials
Specification Q195F Q195Z Q215AF Q215AZ Q215BF Q215BZ Q235AF Q235AZ Q235BF Q275AF Q275AZ Q295A Q345A Q390A Q420A Q195F Q195Z Q215AF Q215AZ Q215BF Q215BZ Q235AF Q235AZ Q235BF Q275AF Q275AZ Q295A Q345A Q390A Q420A Q195F Q195Z Q215AF Q215AZ Q215BF Q215BZ Q235AF Q235AZ Q235BF Q235BZ Q275AF Q275AZ Q275BZ Q295A Q295B Q345A Q345B Material standard Specification Q390A Q390B Q420A Q420B 10 20 35 45 40Mn2 45Mn2 27SiMn 40MnB 45MnB 20Mn2B 20Cr 30Cr 35Cr 40Cr 45Cr 50Cr 38CrSi 12CrMo 15CrMo 20CrMo 35CrMo 42CrMo 12CrMoV 12Cr1MoV 38CrMoAl 50CrVA 20CrMn 20CrMnSi 30CrMnSi 35CrMnSiA 20CrMnTi 30CrMnTi 12CrNi2 12CrNi3 12CrNi4 40CrNiMoA 45CrNiMoVA Q195F Q195Z Q215AF Q215BF Q235AF Q235BF Q275AF

Material standard 1. Steel plates

GB/T 700-2006

GB/T 1591-1994 2. Hot rolled sections

GB/T 700-2006

GB/T 8162-1999

GB/T 1591-1994 3. Hollow sections

GB/T 700-2006

4. Steel for cold forming

GB/T 700-2006

GB/T 1591-1994

Explanatory Notes 12

? 02-2008 BCA

BC 1: 2008

Annex B

List of certification agencies acceptable to BCA

Certification agencies in this list are considered acceptable to BCA. FPC certificate issued by any agency in this list is an attestation of a reliable FPC system adopted by the manufacturer in manufacturing a particular type of steel material. American Bureau of Shipping (ABS) American Petroleum Institute (API) Bureau Veritas (BV) Det Norske Veritas (DnV) Germanischer Lloyd Lloyd’s Register Moody International Nippon Kaiji Kyokai (ClassNK) T?V Rheinland See Figure II for a sample of FPC certificate required and the mandatory information to be indicated.

? 02-2008 BCA

Explanatory Notes 13

BC 1: 2008

Figure II — Mandatory information, as numbered, for BC 1: 2008 FPC certificate (sample)

Explanatory Notes 14

? 02-2008 BCA


相关文章:
制药工厂现场主文件编写说明
PE 0084 附件一 2011 年 1 月 1 日 EXPLANATORY NOTES FOR PHARMACEUTICAL MANUFACTURERS ON THE PREPARATION OF A SITE MASTER FILE 制药工厂现场主文件编写说明 ...
德国DIN金属与非金属材料标准名称
tter (WLB) sint-material 部分: WLB 的 specifications; part 1: explanatory notes for WLB 说明注释 DIN 30910-2-1990 烧结金属材 metal materials; 料 ....
审计报告模板英文
accounting policies and other explanatory notes. 一、管理层对财务报表的责任 ...(转载) 审计报告中英对照 2008-12-27 13:38:21 阅读 2557 评论 5 字号:大...
ABI+report+Layouts+-+C
(continued) D:\iknow\docshare\data\cur_work\50822322.doc 5 Page of 8 PART I (a) (continued) EXPLANATORY NOTES FOR CONTENTS OF REPORTS (continued) ...
Download a copy of our Word template-Science Advances
Do not use the native Word 2007, 2008, 2010, or 2011 equation editor. ...Please do not include any extraneous language such as explanatory notes as ...
WHO现场主文件编写指南
基于制药检查会议对药品生产商编写现场主文件的注释 Based on the Explanatory notes for pharmaceutical manufacturers on the preparation of a site master file of...
更多相关标签: