MODEC International, Inc. FPSO
Shell and Tube Exchangers (API 660) Specification 0003-MI20-90S1-0340, Rev. 0
TABLE OF CONTENTS 1.0
EXECUTIVE SUMMARY .................................................................................................. 3
2.0
BACKGROUND ................................................................................................................ 3
3.0
BASIS ............................................................................................................................... 3 3.1 REFERENCES ...................................................................................................... 3 3.2 DEFINITIONS AND ACRONYMS ......................................................................... 4
4.0
EXCEPTIONS, API 660 .................................................................................................... 4 SECTION 7, API 660 – DESIGN....................................................................................... 4 SECTION 9, API 660 – FABRICATION ............................................................................ 5
5.0
GENERAL INFORMATION .............................................................................................. 5
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MODEC International, Inc. FPSO
1.0
Shell and Tube Exchangers (API 660) Specification 0003-MI20-90S1-0340, Rev. 0
EXECUTIVE SUMMARY This document specifies the standards and requirements for Shell and Tube Exchangers (API 660) for FPSO topsides.
2.0
BACKGROUND Company facilities must meet minimum Industry standards to ensure that Quality, Health, Safety, Environmental, and Operations goals are attained. Standard specifications are used to communicate the minimum standards within the Company as well as to Suppliers and Contractors.
3.0
BASIS Industry codes, standards, and practices, as well as Company experience and preferences are the basis for this document. The following references apply only as specified in the body of this document. If the reference is not mentioned within, it is not applicable. Latest reference editions, including addendums, in force at contract award apply. Reference requirement conflicts shall be brought to Company attention for resolution. The most stringent requirement of the following references applies unless otherwise specified in writing by the Company.
3.1
REFERENCES Technical requirements for shell and tube heat exchangers are based on the latest edition of API Std. 660. Requirements within this specification are in addition to those of API Std. 660. These supplementary requirements are identified as additions, deletions, replacements, and decisions. Paragraph numbers in this specification are the same as API Std. 660.Any unrevised API Std. 660 requirement shall remain applicable.
3.1.1
Company
Number / Identification 0003-MI20-00S1-0030
3.1.2
Title Painting and Corrosion Protection Specification
Client
Number / Identification
Title
None
3.1.3
Industry Codes, Standards, Rules, and Regulations
Number / Identification
Title
API Std. 660
Shell and Tube Heat Exchangers for General Refinery Service
TEMA
Standards of the Tubular Exchanger Manufacturers Association
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MODEC International, Inc. FPSO
3.2
Shell and Tube Exchangers (API 660) Specification 0003-MI20-90S1-0340, Rev. 0
DEFINITIONS AND ACRONYMS The following definitions apply within the body of this document:
Term
Definitions
Client
MODEC client and / or its assigns
Company
MODEC International, Inc. and / or its assigns
CA
Classification Authority
Facility
Supplier or Subcontractor shop and/or any property owned by a Supplier or Subcontractor where any portion of the work will be performed.
Services
Any service or work performed by a Supplier that must be performed to comply with the requisition requirements or the contract to procure, design, manufacture, and deliver the work.
Standards
Industry Codes, Standards, Guides, and Recommended Practices referenced herein, meaning the latest issue or edition in force at the end of the Supplier bid validity date or the contract date.
Supplier
At quote stage: any entity invited to provide a quotation for the equipment and/or any Subcontractors thereto. At Purchase stage: any entity contracted for the supply of the equipment and/or any Subcontractors thereto. In all cases, the Supplier is responsible for performance of all Work and will be the single point of contact for all Work related issues. The Company will not receive information from nor respond directly to Subsuppliers.
Work
4.0
Any material or item or service listed in the requisition or contract as being in the Supplier’s Scope of Supply.
EXCEPTIONS, API 660
SECTION 7, API 660 – DESIGN Section 7.2, API 660 - Cladding for Corrosion Allowance 7.2.3 ADD The thickness of the corrosion allowance, cladding, or overlay shall not be used in strength calculations.
Section 7.3, API 660 - Shell Supports 7.3.6 ADD Stacking of three or more exchangers shall require the Company’s approval. 7.3.7 ADD Stress on interconnecting nozzles resulting from the thermal growth rates of stacked exchangers shall be included as superimposed loads in designing the nozzles. 7.3.8
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MODEC International, Inc. FPSO
Shell and Tube Exchangers (API 660) Specification 0003-MI20-90S1-0340, Rev. 0
ADD All external attachments, including the complete supports and saddle plates, shall be sealed against corrosion via continuous welding. Two ¼ inch NPT vent holes shall be provided for each external pad. Each hole shall be plugged with heavy grease after testing.
Section 7.6, API 660 - Tube Bundle 7.6.2 Tube Sheets 7.6.2.5 ADD Tube sheet design, construction, and tube-to-tube sheet joint shall be in accordance with TEMA standards and the latest edition of ASME Section VIII, Division 1.
SECTION 9, API 660 – FABRICATION Section 9.1, API 660 - Shells 9.1.4 ADD Adjacent longitudinal welds shall be staggered to give a minimum of a 60 degree orientation between welds. Longitudinal welds to the shell shall be located to miss any attachment joint by a minimum of 2 inches.
SECTION 9.6, API 660 - Heat Treatment 9.6.2.1 ADD The bend portion of carbon steel or admiralty metal U-tubes shall be heat treated after bending. The bend portion plus 6 inches shall be stress relieved as follows: 1.
Carbon steels over 0.125 inches thick at 1100F to 1200F for 15 minutes, slow cool.
2.
Admiralty metal over 0.125 inches thick at 800F maximum for 30 minutes, slow cool.
9.6.3 DELETE
5.0
GENERAL INFORMATION All shell and tube heat exchangers shall be coated or painted to comply with Painting and Corrosion Protection Specification1 requirements.
1
Refer to Section 3.1.1
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