THERMAL INSULATION OF PIPING. (WITH AMENDMENTS / SUPPLEMENTS. TO THE CINI HANDBOOK). Document nr.: PIP – This specification has. atta&ible with thermal insulation in building wall and piping . This handbook of thermal insulation applications vas prepared by EM4C. ducts and steam pipe systems with operating temperatures that are constantly above °C. CINI Manual “Insulation for industries”. CINI recommends applying .
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Neither the whole nor any part of this document may be disclosed to any third party without the prior written consent of Shell International Oil Products B. The copyright of this document is vested in these companies. Neither the whole nor any part of this document may be reproduced, stored in any retrieval system or transmitted in any form or by any means electronic, mechanical, reprographic, recording or otherwise without the prior written consent of the copyright owners.
Shell Global Solutions International B. SIC and other Service Companies. They are based on the experience acquired during their involvement with the design, construction, operation and maintenance of processing units and facilities, and they are supplemented with the inaulation of Group Operating companies. Where appropriate they are based on, or reference is made to, international, regional, national and industry standards. The objective is to set the recommended standard for good design and engineering practice applied by Group companies operating an oil refinery, gas handling installation, chemical plant, oil and gas production facility, or any other such facility, and thereby to achieve maximum technical and economic benefit from standardization.
The information set forth in these publications is provided to users for their consideration and decision to implement. This is of particular importance where DEPs may not cover every requirement or diversity of condition at each locality. The system of DEPs is expected to be sufficiently flexible to allow individual operating companies to adapt the information set forth in DEPs to their own environment and requirements. In particular, for those requirements not specifically covered, the Principal will expect them to follow those design and engineering practices which will achieve the same level of integrity as reflected in the DEPs.
Consequently, three categories of users of DEPs can be distinguished: The use of DEPs by these operating companies is subject in all respects to the terms and conditions of the relevant Service Agreement.
Subject to any particular terms and conditions as may be set forth in specific agreements with users, Shell GSI, SIEP and SIC disclaim any liability of whatsoever nature for any damage including injury or death suffered by any company or person whomsoever as a result of or in connection with the use, application or implementation of any DEP, combination of DEPs or any part thereof, even if it is wholly or partly caused by negligence on the part of Shell GSI, SIEP or other Service Company.
Without prejudice to any specific terms in respect of confidentiality under relevant contractual arrangements, DEPs shall not, without inxulation prior written consent of Shell GSI and SIEP, be disclosed by users to any company or person whomsoever and the DEPs shall be used exclusively for the purpose for which they have been provided to the user. This DEP is divided into six parts: However, the applicable material specifications and the numerous construction details, obtained from different disciplines and years of experience, form a good basis for a proper insulation specification.
Part IV specifies requirements and insylation recommendations for inspection and maintenance of handbook insulation systems that are not covered in the CINI Handbook. Part V lists the publications referenced in this Indulation.
Part VI contains appendices with diagrams, tables and drawings. When DEPs are applied, a Management of Change MOC process should be implemented; this is of particular importance when existing facilities are to be modified. The Principal may then negotiate with the Authorities concerned with the object of obtaining agreement to follow this DEP as closely as possible. Section – General update I The possibility of non-contact insulation has also been included.
The changes mentioned in the other parts have been implemented. Added list of items to be inspected. Typical drawings of non-contact insulation have been added. The jacketing selection has been changed. Typical insulation collar solutions have been added. The Principal will generally specify the technical requirements. The Principal may also include an agent or consultant, authorised to act for the Principal.
The Main Contractor is the party that carries out all or part of the design, engineering, procurement, installation and commissioning or management of a project. The Principal may sometimes undertake all or part of the duties of the Main Contractor. The Insulation Contractor is the party that carries out the insulation works, including engineering, material supply, installation and quality control.
Technical Insulation Standard Industry CINI
The word shall indicates a requirement. The word should indicates a recommendation. The rate of condensation depends on ambient temperature, relative humidity, and emissivity of bare surface or insulation jacketing, wind velocity and process temperature Corrosion Under Insulation.
Insulation material for this duty is normally cellular glass. The emissivity of these materials is typically 0. The annular space between insulation material and bare surface is a non-ventilated space in which openings or drains are always located at the lowest point of the piping or equipment. This type of insulation is often used in conjuction with heat tracing. In the engineering stage attention shall be paid to the insulation design, bearing in mind optimal life cycle costs, process requirements, maintenance aspects of insulated lines during operation and possible corrosion under insulation.
Insulation shall not be applied to piping or equipment that has been designed to emit heat or where cooling is required or acceptable by the process e. Each line should be insulated separately; a common insulation cover should not enclose adjacent lines.
If approved by the Principal, deviations shall be shown on the piping drawings. Valves, flanges and nozzles shall be insulated, unless other requirements are overruling, e.
Valves and flanges in piping shall be provided with removable insulation covers. Otherwise the Main Contractor shall design an alternative which shall take into account the avoidance of condensation and heat losses.
All metal surfaces under insulation shall be suitably protected with a complete paint system in accordance with DEP Gen. Fixed costs, such as scaffolding and metal surface preparation cost, shall not be included. Since a large insulation thickness may result in considerable extra capital costs for pipe bridges, civil work, etc.
Payout time calculations are not recommended. TICP programs shall be used to determine the economic insulation thickness. VDIor other standards if specified by the Principal, shall be used to calculate the contribution of convection. The software shall comply with the information given in CINI and related standards. The thickness of hot insulation shall be calculated on the basis of local data on insulation, energy costs and capital charge factor. Furthermore, if for process reasons the allowable temperature drop is limited, e.
The thickness of cold insulation systems shall be calculated on the following basis: The heat gain heat ingress for piping in off-plot areas shall be determined by the Principal.
inshlation Solar radiation shall be taken into account. For avoiding surface condensation, parameters such as ambient temperature, wind velocity and relative humidity shall be determined from historical local weather data.
A report shall be made available which indicates the design parameters necessary to arrive at an economically and technically acceptable design.
The report shall be subject to the approval of the Principal. The input data shall be used in conjunction with software e.
CINI revises its insulation manual and includes ULTIMATE
TICP and shall be subject to the approval of the Principal. The protection shall be restricted to a distance of not more than mm horizontally from access walkways and normal working jandbook. For higher ambient temperatures a calculation shall be carried out to determine the minimum thickness required to achieve a surface temperature of 70 C maximum.
Personnel protection for cold insulation is normally not required, only if indicated by the Principal. If required, metal screens or fencing alone shall be designed and provided. Its total thickness shall be as close as possible to the economic insulatoin thickness and shall be rounded off to handblok upper commercially available thickness. To reduce heat losses, insulation applied in two or more layers shall have staggered joints.
Cini :: CINI manual “Insulation in Industry”
Circumferential joints between segments in adjacent lengths of pre-formed rigid insulation shall also be staggered. If economically attractive, a combination of not more than two different gandbook materials may be used. The extent of thermal insulation shall be in accordance with Section 1.
The method for handvook the economic thickness of insulation shall be in accordance with Section 1. The insulation system and the materials selected shall comply with this DEP. Alternatives shall be submitted to the Principal for approval and shall be supported by references e.
THERMAL INSULATION (AMENDMENTS/SUPPLEMENTS TO THE CINI HANDBOOK)
Tests shall be carried out in accordance with the applicable test methods. For inspection an ITP Inspection Test Plan shall be submitted, which indicates all phases for test and inspections of the insulation systems. Most of these items are covered in this DEP. The phenomenon of CUI is often underestimated, as it will occur years after completion of a project. The potential cost and safety implications are enormous, and therefore insulation systems shall be designed according to categories that indicate vulnerability to CUI and are related to the process temperatures.
The following table indicates vulnerabilities to CUI: Inspectors shall record any such changes. Category System and Innsulation Guidance 1 Note: A minimum of two layers of cellular glass shall be applied.
The inner side of the inner layer shall be provided with a high temperature anti-abrasive compound, based on a mixture of calcium sulphate hemihydrates and Portland cement for temperatures up to o C. For temperatures up to o C other suitable compounds may be used. The systems and materials shall perform as well as or better than the preferred system and material. For lower temperature ranges and especially small bore piping, FEF may be considered. As an alternative non-contact insulation may be considered inslation indicated in Appendix 3 and 5.
For smaller pipe diameters metal jacketing is not recommended. For temperatures lower than the maximum ambient temperature a primary vapour barrier shall be applied. Other primary vapour barriers and jacketing systems shall have the approval of the Principal.
The insulahion system shall be as indicated in DEP Gen.
In general this means that aluminised steel or stainless steel jacketing shall be applied. Between the acoustic insulation and the jacketing insupation vapour barrier shall be provided that includes a heavy duty multiplex foil, covered with a UV curable GRP.
Insulation collars, if not provided by the equipment Vendor, shall be fitted to avoid any water ingress see Appendix 9.