Questions and Answers
What is the primary purpose of insulation in piping and equipment according to this specification?
Heat conservation and process stabilization
Which of the following documents would not typically specify piping and equipment requiring insulation?
Project Management Plan
What is the maximum operating temperature for piping and equipment insulation covered in this specification?
760°C
What is the basis for the insulation thickness tables in this specification?
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What document should be referred to for selecting insulation material and thickness?
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What is the purpose of insulation for process stabilization?
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Which of the following is not a purpose of insulation according to this specification?
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What is the basis for selecting a criterion in this specification?
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Which of the following is not covered by this specification?
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Which document should be referred to for insulation thickness tables for a particular job?
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Study Notes
Scope of Specification
- Covers design and material requirements for above ground, external insulation of piping and equipment operating between ambient temperature and 760°C.
- Purpose: heat conservation, process stabilization, temperature maintenance, personnel protection, and fire protection.
- Suitable for use in normal process plant atmospheres.
- Alternative designs and materials may be specified for corrosive atmospheres or potential leaks and spills of chemicals.
Documents for Insulation Specifications
- Piping and Instrument Diagrams (P&IDs) and Line Lists.
- Piping General Arrangement Drawings & Isometrics.
- Instrument Piping Details and Schedules.
- Vessel, Exchanger, Storage Tank and sphere documents and Insulation Schedules.
- Equipment suppliers General Arrangement Drawings for equipment items in Package plant.
Design Basis
- Insulation thickness tables are based on heat loss criteria.
- Guideline for selecting insulation material & thickness: Document No. 7544-02-41-GL-56.
- Insulation thickness tables for a particular job shall be as per 'Job Process design basis".
Purposes of Insulation
- Heat conservation.
- Process stabilization to assist process control.
- Steam tracing.
- Electric tracing.
- Hot water or solvent tracing (liquid).
- Hot oil tracing.
- Steam jacketing.
- Hot water or liquid jacketing.
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