GBH Enterprises, Ltd.
Process Engineering Guide:
GBHE_LEP_0214
Pressure Systems, Pressure Relief Streams
& Protective De...
Process Engineering Guide:
Pressure Systems, Pressure Relief
Streams & Protective Devices,
Pressure Vessels
CONTENTS
1
...
1
PRESSURE SYSTEMS
1.1
Introduction/Scope
A local procedure is required for the design, manufacture, installation,
Regi...
Registered Pressure Systems equipment is to include:
•
all equipment covered by national or local legislation;
•
all pr...
1.3.2 Pressure Systems Instructions
Pressure Systems instructions for a site or facility may be issued as part of
document...
2.2
ADDITIONAL RESPONSIBILITIES
2.2.1 Formal Design Review of Pressure Relief Streams (&
Associated Relief Equipment)
The...
2.2.2 Registration
The Site Responsible Engineer is to make sure that:
(a)
Pressure Relief Streams and Associated Relief ...
2.2.3 Periodic Inspection
The Site Responsible Engineer is to make sure that:
(a)
Periodic Inspection is considered durin...

Maintaining Records of all observations, testing,
maintenance and replacement in the Registration file.

the Periodi...
3
PRESSURE VESSELS
3.1
INTRODUCTION/SCOPE
This section includes particular requirements for the Formal Design
Review, R...
•
the appropriate code design procedures have been followed.
•
any non-code design procedures are appropriate and
corre...
(e) A Formal Design Review is considered if there are doubts about the
suitability of an existing Pressure Vessel, such as...
3.2.3
PERIODIC INSPECTION
The Site Responsible Engineer is to make sure that:
(a) Periodic Inspection is considered duri...
(e)
Pressure Vessels which have limited life (due to high temperature creep,
or to fatigue cracking due to pressure cycli...
Refinery Process Stream Purification Refinery Process Catalysts Troubleshooting Refinery Process Catalyst Start-Up / Shutd...
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Pressure Systems, Pressure Relief Streams & Protective Devices, Pressure Vessels

Pressure Systems, Pressure Relief Streams & Protective Devices, Pressure Vessels CONTENTS 1 PRESSURE SYSTEMS 1.1 INTRODUCTION/SCOPE 1.2 GENERAL REFERENCES 1.3 RESPONSIBILITIES 1.3.1 SITE RESPONSIBLE ENGINEER 1.3.2 PRESSURE SYSTEMS INSTRUCTIONS 2 PRESSURE RELIEF STREAMS AND PROTECTIVE DEVICES 2.1 INTRODUCTION/SCOPE 2.2 ADDITIONAL RESPONSIBILITIES 2.2.1 FORMAL DESIGN REVIEW OF PRESSURE RELIEF STREAMS (& ASSOCIATED RELIEF EQUIPMENT) 2.2.2 REGISTRATION 2.2.3 PERIODIC INSPECTION 3 PRESSURE VESSELS 3.1 INTRODUCTION/SCOPE 3.2 ADDITIONAL RESPONSIBILITIES 3.2.1 FORMAL DESIGN REVIEW OF PRESSURE VESSELS 3.2.2 REGISTRATION 3.2.3 PERIODIC INSPECTION
Published on: Mar 4, 2016
Published in: Technology      
Source: www.slideshare.net


Transcripts - Pressure Systems, Pressure Relief Streams & Protective Devices, Pressure Vessels

  • 1. GBH Enterprises, Ltd. Process Engineering Guide: GBHE_LEP_0214 Pressure Systems, Pressure Relief Streams & Protective Devices, Pressure Vessels Process Information Disclaimer Information contained in this publication or as otherwise supplied to Users is believed to be accurate and correct at time of going to press, and is given in good faith, but it is for the User to satisfy itself of the suitability of the Product for its own particular purpose. GBHE gives no warranty as to the fitness of the Product for any particular purpose and any implied warranty or condition (statutory or otherwise) is excluded except to the extent that exclusion is prevented by law. GBHE accepts no liability for loss, damage or personnel injury caused or resulting from reliance on this information. Freedom under Patent, Copyright and Designs cannot be assumed. Refinery Process Stream Purification Refinery Process Catalysts Troubleshooting Refinery Process Catalyst Start-Up / Shutdown Activation Reduction In-situ Ex-situ Sulfiding Specializing in Refinery Process Catalyst Performance Evaluation Heat & Mass Balance Analysis Catalyst Remaining Life Determination Catalyst Deactivation Assessment Catalyst Performance Characterization Refining & Gas Processing & Petrochemical Industries Catalysts / Process Technology - Hydrogen Catalysts / Process Technology – Ammonia Catalyst Process Technology - Methanol Catalysts / process Technology – Petrochemicals Specializing in the Development & Commercialization of New Technology in the Refining & Petrochemical Industries Web Site: www.GBHEnterprises.com
  • 2. Process Engineering Guide: Pressure Systems, Pressure Relief Streams & Protective Devices, Pressure Vessels CONTENTS 1 PRESSURE SYSTEMS 1.1 1.2 1.3 INTRODUCTION/SCOPE GENERAL REFERENCES RESPONSIBILITIES 1.3.1 SITE RESPONSIBLE ENGINEER 1.3.2 PRESSURE SYSTEMS INSTRUCTIONS 2 PRESSURE RELIEF STREAMS AND PROTECTIVE DEVICES 2.1 2.2 INTRODUCTION/SCOPE ADDITIONAL RESPONSIBILITIES 2.2.1 FORMAL DESIGN REVIEW OF PRESSURE RELIEF STREAMS (& ASSOCIATED RELIEF EQUIPMENT) 2.2.2 REGISTRATION 2.2.3 PERIODIC INSPECTION 3 PRESSURE VESSELS 3.1 INTRODUCTION/SCOPE 3.2 ADDITIONAL RESPONSIBILITIES 3.2.1 FORMAL DESIGN REVIEW OF PRESSURE VESSELS 3.2.2 REGISTRATION 3.2.3 PERIODIC INSPECTION Refinery Process Stream Purification Refinery Process Catalysts Troubleshooting Refinery Process Catalyst Start-Up / Shutdown Activation Reduction In-situ Ex-situ Sulfiding Specializing in Refinery Process Catalyst Performance Evaluation Heat & Mass Balance Analysis Catalyst Remaining Life Determination Catalyst Deactivation Assessment Catalyst Performance Characterization Refining & Gas Processing & Petrochemical Industries Catalysts / Process Technology - Hydrogen Catalysts / Process Technology – Ammonia Catalyst Process Technology - Methanol Catalysts / process Technology – Petrochemicals Specializing in the Development & Commercialization of New Technology in the Refining & Petrochemical Industries Web Site: www.GBHEnterprises.com
  • 3. 1 PRESSURE SYSTEMS 1.1 Introduction/Scope A local procedure is required for the design, manufacture, installation, Registration, commissioning, Periodic Inspection, repair, modification, rerating and operation of all the site's Pressure Equipment and Systems. Additional working instructions may be required to support this procedure. All site, facility and project appointments as well as responsibilities for commissioning, operating and inspection must be listed. 1.2 General References National and local regulations for Pressure Systems 1.3 Responsibilities 1.3.1 Site Responsible Engineer The Site Responsible Engineer is required to read and understand the documents listed in clause 2 and to carry out the engineering responsibilities listed below. Carrying out the responsibilities may require support from a Responsible Mechanical Engineer or Functional Advisor. The Site Responsible Engineer is to make sure that: (a) Pressure Systems are designed, approved, manufactured, installed, maintained, repaired, modified and re-rated in accordance with national and international standards. (b) Inspection during manufacture, repair or modification is by the relevant national or local authority or by an inspection service approved by the Site Responsible Engineer or Project Manager as appropriate. (c) Pressure Systems and Equipment is given either Registered or non-Registered status. Refinery Process Stream Purification Refinery Process Catalysts Troubleshooting Refinery Process Catalyst Start-Up / Shutdown Activation Reduction In-situ Ex-situ Sulfiding Specializing in Refinery Process Catalyst Performance Evaluation Heat & Mass Balance Analysis Catalyst Remaining Life Determination Catalyst Deactivation Assessment Catalyst Performance Characterization Refining & Gas Processing & Petrochemical Industries Catalysts / Process Technology - Hydrogen Catalysts / Process Technology – Ammonia Catalyst Process Technology - Methanol Catalysts / process Technology – Petrochemicals Specializing in the Development & Commercialization of New Technology in the Refining & Petrochemical Industries Web Site: www.GBHEnterprises.com
  • 4. Registered Pressure Systems equipment is to include: • all equipment covered by national or local legislation; • all pressure vessels except those listed as exempt from Registration; • atmospheric pressure Storage Tanks which are in a location where a leak or failure could cause an Unacceptable Situation; • all Pressure Relief Streams and associated relief equipment with the possible exception of items listed as exempt from Registration; • piping systems which are outside site boundaries or in a location that a leak or failure could cause an Unacceptable Situation; • equipment other than the above such as silos, hoppers, furnaces and components of non-registered piping systems such as bellows, piped-in flexibles, non-return valves and spray injection desuperheaters /coolers, which for particular reasons the site consider appropriate for Registration. (d) The design of new, modified or re-rated Pressure Systems equipment which is registered is verified by a knowledgeable and independent Design Authority to make sure that the design is satisfactory for the specified conditions of use. Note: Some items listed may be exempted from verification of design at the discretion of the Responsible Mechanical Engineer or Project Manager as appropriate. (e) Registered Pressure Systems equipment is Periodically Inspected by a competent inspection service within an agreed period. Note: The Site Responsible Engineer or nominee is to sign or countersign a written report of the inspection and any repairs. (f) Formal appointments are made of the engineers and organizations responsible for Registration, design verification and Periodic Inspection of Pressure Systems equipment. Refinery Process Stream Purification Refinery Process Catalysts Troubleshooting Refinery Process Catalyst Start-Up / Shutdown Activation Reduction In-situ Ex-situ Sulfiding Specializing in Refinery Process Catalyst Performance Evaluation Heat & Mass Balance Analysis Catalyst Remaining Life Determination Catalyst Deactivation Assessment Catalyst Performance Characterization Refining & Gas Processing & Petrochemical Industries Catalysts / Process Technology - Hydrogen Catalysts / Process Technology – Ammonia Catalyst Process Technology - Methanol Catalysts / process Technology – Petrochemicals Specializing in the Development & Commercialization of New Technology in the Refining & Petrochemical Industries Web Site: www.GBHEnterprises.com
  • 5. 1.3.2 Pressure Systems Instructions Pressure Systems instructions for a site or facility may be issued as part of documentation on site engineering, site operation or site safety, but wherever they are included there is to be references to make sure responsible people are aware of them. The Site Responsible Engineer (where appropriate together with the Operating Manager) is to issue, and make sure they conform with site working instructions, Pressure Systems instructions that include the following key topics in single or combined documents: • • Pressure Relief Streams and Protective Devices; • Testing of relief devices; • Pressure vessels; • Atmospheric pressure Storage Tanks; • Silos, Hoppers, Furnaces, etc.; • Transport Containers and other portable tanks / vessels; • 2 Registered Piping Systems; Flexible Pipes or Hoses on Hazardous Duties; PRESSURE RELIEF STREAMS AND PROTECTIVE DEVICES 2.1 INTRODUCTION/SCOPE This section includes particular requirements for the Formal Design Review, Registration and Periodic Inspection of Pressure Relief Streams and Non-pressure Protective Devices which are additional to the management systems required in all Critical Pressure Systems, and the appointments and general responsibilities listed. Refinery Process Stream Purification Refinery Process Catalysts Troubleshooting Refinery Process Catalyst Start-Up / Shutdown Activation Reduction In-situ Ex-situ Sulfiding Specializing in Refinery Process Catalyst Performance Evaluation Heat & Mass Balance Analysis Catalyst Remaining Life Determination Catalyst Deactivation Assessment Catalyst Performance Characterization Refining & Gas Processing & Petrochemical Industries Catalysts / Process Technology - Hydrogen Catalysts / Process Technology – Ammonia Catalyst Process Technology - Methanol Catalysts / process Technology – Petrochemicals Specializing in the Development & Commercialization of New Technology in the Refining & Petrochemical Industries Web Site: www.GBHEnterprises.com
  • 6. 2.2 ADDITIONAL RESPONSIBILITIES 2.2.1 Formal Design Review of Pressure Relief Streams (& Associated Relief Equipment) The Site Responsible Engineer is to make sure that: (a) For all new Pressure Relief streams the following information is submitted to the Design Authority for Formal Design Review • Engineering line diagram(s) showing all relevant details. • Process engineering documents on protection against over and under pressure. • Protective Device data sheet(s), sizing calculations (including inlet & outlet piping pressure drops), and blow off test certificates. • Data sheets and/or drawings of Associated Relief Equipment. • Detailed piping drawings of the Pressure Relief Stream with information on discharge reaction forces, and piping flexibility loads on the Protective Devices for systems subject to significant variation from ambient temperature. • Data sheets or drawings of equipment protected by the Pressure Relief Stream. • As appropriate, reports on in-service testing and inspection of Protective Devices. (b) The Design Authority gives written approval of the design of all new Pressure Relief Streams (e.g. Design Verification Certificate) before use of the equipment. (c) If there should be doubts about the suitability of an Existing Pressure Relief Stream then a Formal Design Review is requested. (d) For Modifications to Pressure Relief Streams the requirements of (a) and (b) apply irrespective of whether the Pressure Relief Stream has been previously reviewed. Refinery Process Stream Purification Refinery Process Catalysts Troubleshooting Refinery Process Catalyst Start-Up / Shutdown Activation Reduction In-situ Ex-situ Sulfiding Specializing in Refinery Process Catalyst Performance Evaluation Heat & Mass Balance Analysis Catalyst Remaining Life Determination Catalyst Deactivation Assessment Catalyst Performance Characterization Refining & Gas Processing & Petrochemical Industries Catalysts / Process Technology - Hydrogen Catalysts / Process Technology – Ammonia Catalyst Process Technology - Methanol Catalysts / process Technology – Petrochemicals Specializing in the Development & Commercialization of New Technology in the Refining & Petrochemical Industries Web Site: www.GBHEnterprises.com
  • 7. 2.2.2 Registration The Site Responsible Engineer is to make sure that: (a) Pressure Relief Streams and Associated Relief Equipment are Registered and Periodically Inspected as required. (b) Documentation is provided in the Registration file as listed in registry. (c) The identification of Pressure Relief Streams for the purpose of Registration is initially via the schedule of Protective Devices. (d) For each Pressure Relief Stream and its Associated Relief Equipment, components are identified and numbered separately wherever it is necessary to have different schemes and intervals for Periodic Inspection. Note: (Figures 1 and 2) for simple and complex arrangements (e) Pressure Relief Streams / Protective Devices on non-pressure equipment such as silos are registered. Vents or panels to protect against dust explosion are examples of this type of equipment. (f) Instrumented devices and systems providing protection against excess high or low pressure (such as those which isolate equipment from the source of pressure) are registered as Pressure Relief Streams. (g) Registration is provided for non-pressure Protective Devices and systems which protect the pressure envelope of equipment against high or low excess temperatures, high or low fluid levels (e.g. boiler plant) or adverse fluid composition which would cause rapid corrosion, erosion or cracking. Note: Other devices may control the course or rate of a chemical reaction, and where such devices and systems make use of instrumentation, reference should be made in the register. Refinery Process Stream Purification Refinery Process Catalysts Troubleshooting Refinery Process Catalyst Start-Up / Shutdown Activation Reduction In-situ Ex-situ Sulfiding Specializing in Refinery Process Catalyst Performance Evaluation Heat & Mass Balance Analysis Catalyst Remaining Life Determination Catalyst Deactivation Assessment Catalyst Performance Characterization Refining & Gas Processing & Petrochemical Industries Catalysts / Process Technology - Hydrogen Catalysts / Process Technology – Ammonia Catalyst Process Technology - Methanol Catalysts / process Technology – Petrochemicals Specializing in the Development & Commercialization of New Technology in the Refining & Petrochemical Industries Web Site: www.GBHEnterprises.com
  • 8. 2.2.3 Periodic Inspection The Site Responsible Engineer is to make sure that: (a) Periodic Inspection is considered during Registration for all components of Pressure Relief Streams and Associated Relief Equipment. (b) Pressure Relief Streams are categorized according to the risk of blockage or fouling due to the system contents: • • Category 2 - Blockage or fouling possible but not likely. • (c) Category 1 - Clean, non-corrosive duty. Category 3 - Vulnerable to blockage or fouling. GBHE guidance on inspection intervals for the different Categories is considered when deciding on the maximum intervals between Periodic Inspections. Note: GBHE gives detailed guidance on inspection intervals for each of the following parts of Pressure Relief Streams. - Protective Devices; Pressure Relief Stream Piping; Associated Relief Equipment; Non-pressure Protective Devices; Other Equipment. (d) Periodic Inspection of Protective Devices includes the following:  Examination of the condition of Safety Valves and Bursting Discs as-removed and before cleaning, and judgment of how they would have behaved on-line.  Testing of Safety Valves and other reseatable devices in-situ or on removal (as far as is practicable) as a guide to the pressure at which they would have operated in service. If any device fails to operate within acceptable limits, the cause should be investigated.  All devices are cleaned, examined, shop reconditioned, and tested. Refinery Process Stream Purification Refinery Process Catalysts Troubleshooting Refinery Process Catalyst Start-Up / Shutdown Activation Reduction In-situ Ex-situ Sulfiding Specializing in Refinery Process Catalyst Performance Evaluation Heat & Mass Balance Analysis Catalyst Remaining Life Determination Catalyst Deactivation Assessment Catalyst Performance Characterization Refining & Gas Processing & Petrochemical Industries Catalysts / Process Technology - Hydrogen Catalysts / Process Technology – Ammonia Catalyst Process Technology - Methanol Catalysts / process Technology – Petrochemicals Specializing in the Development & Commercialization of New Technology in the Refining & Petrochemical Industries Web Site: www.GBHEnterprises.com
  • 9.  Maintaining Records of all observations, testing, maintenance and replacement in the Registration file.  the Periodic Inspection interval should be reviewed based on the observations and test results. Note: See GBHE "Periodic Testing, Examination and Reconditioning of Safety Valves" (e) Details of the routine testing, calibration and maintenance of any Instrumented Protective Systems for Pressure Protection are available to the Inspection Authority, and records of these are placed in the Registration file. (f) Pressure Relief Stream Piping is examined for blockage of the main flow passages and accumulation of debris and it is ensured that any drains, purge connections and instrument tappings are clear. The pipework and its supports and restraints should also be inspected. (g) All other equipment such as scrubbers, separators, flare stacks and relevant ancillaries to these items are to be inspected and tested to ensure their continuing ability to meet the design requirements of the Pressure Relief Stream. (h) Associated Relief Equipment is inspected to check that orifice sizes have not enlarged by such means as erosion or corrosion that unauthorized changes in equipment have not been made and that the design basis of the Pressure Relief Stream has not been otherwise altered. (j) The complete Pressure Relief Stream is inspected before commissioning (or re-commissioning after overhaul) to check that it has been assembled as designed. A record that this inspection should be kept in the registration file. Refinery Process Stream Purification Refinery Process Catalysts Troubleshooting Refinery Process Catalyst Start-Up / Shutdown Activation Reduction In-situ Ex-situ Sulfiding Specializing in Refinery Process Catalyst Performance Evaluation Heat & Mass Balance Analysis Catalyst Remaining Life Determination Catalyst Deactivation Assessment Catalyst Performance Characterization Refining & Gas Processing & Petrochemical Industries Catalysts / Process Technology - Hydrogen Catalysts / Process Technology – Ammonia Catalyst Process Technology - Methanol Catalysts / process Technology – Petrochemicals Specializing in the Development & Commercialization of New Technology in the Refining & Petrochemical Industries Web Site: www.GBHEnterprises.com
  • 10. 3 PRESSURE VESSELS 3.1 INTRODUCTION/SCOPE This section includes particular requirements for the Formal Design Review, Registration and Periodic Inspection of Pressure Vessels which are additional to the management systems required, for all Critical Pressure Systems, and the appointments and general responsibilities. For more detailed guidance contact GBHE: ’Pressure Equipment’ 3.2 ADDITIONAL RESPONSIBILITIES 3.2.1 Formal Design Review of Pressure Vessels The Site Responsible Engineer is to make sure that: (a) For new and Modified Pressure vessels the following information is submitted to the Design Authority for Formal Design Review: • A complete set of design calculations. Calculations should include for cyclic duty and state design life if calculations exist. • A complete set of drawings. • Other documents required to complete the description of the design. • A mechanical data sheet, where applicable. • Documentation (for example a Design Verification Certificate) listing the design conditions, with references to other relevant documents. (b) The Design Authority carries out a Formal Design Review of the Pressure Vessel to confirm that it is suitable for the conditions given in (a), and in particular that: Refinery Process Stream Purification Refinery Process Catalysts Troubleshooting Refinery Process Catalyst Start-Up / Shutdown Activation Reduction In-situ Ex-situ Sulfiding Specializing in Refinery Process Catalyst Performance Evaluation Heat & Mass Balance Analysis Catalyst Remaining Life Determination Catalyst Deactivation Assessment Catalyst Performance Characterization Refining & Gas Processing & Petrochemical Industries Catalysts / Process Technology - Hydrogen Catalysts / Process Technology – Ammonia Catalyst Process Technology - Methanol Catalysts / process Technology – Petrochemicals Specializing in the Development & Commercialization of New Technology in the Refining & Petrochemical Industries Web Site: www.GBHEnterprises.com
  • 11. • the appropriate code design procedures have been followed. • any non-code design procedures are appropriate and correct. • appropriate non destructive testing and pressure testing has been specified. • no essential design requirements have been omitted. Note: Formal Design Review is primarily concerned with the integrity of the pressure envelope, but may by agreement be extended to cover other aspects (such as the loads imposed on the shell from internal trays of distillation columns). (c) Formal Design Review certification is issued before any new, Modified, re-rated, or replacement Registered Pressure Vessel is returned to service (for Modifications, the review need cover only those parts affected by the changes). Note: Repairs to Pressure Vessels should restore them to their original design and specification using original or equivalent materials, fabrication & welding standards, heat treatment, etc. Otherwise the work is treated as a Modification. (d) Formal Design Review is waived for small low pressure vessels (where stored energy is the only hazard) only if all of the following apply: • • • • • the contents are non-flammable, non-toxic gases and/or liquids. the design pressure does not exceed 15 bar g. the product of design pressure (bar g.) and gross volume (m3) does not exceed 25 bar m3. exemption is approved by the Site Responsible Engineer (or Project Manager) after careful consideration of all relevant factors. details are recorded in the Registration file. Refinery Process Stream Purification Refinery Process Catalysts Troubleshooting Refinery Process Catalyst Start-Up / Shutdown Activation Reduction In-situ Ex-situ Sulfiding Specializing in Refinery Process Catalyst Performance Evaluation Heat & Mass Balance Analysis Catalyst Remaining Life Determination Catalyst Deactivation Assessment Catalyst Performance Characterization Refining & Gas Processing & Petrochemical Industries Catalysts / Process Technology - Hydrogen Catalysts / Process Technology – Ammonia Catalyst Process Technology - Methanol Catalysts / process Technology – Petrochemicals Specializing in the Development & Commercialization of New Technology in the Refining & Petrochemical Industries Web Site: www.GBHEnterprises.com
  • 12. (e) A Formal Design Review is considered if there are doubts about the suitability of an existing Pressure Vessel, such as where the Registration file does not contain adequate information. (f) Adequate documentation and design confirmation is obtained for proprietary Pressure Vessels. Formal Design Review is required for vessels with potential hazards because of pressure and/or the nature of their contents, but alternatives may be considered for small series or regularly produced equipment such as intercoolers, aftercoolers and line filters on low hazard duties. (see GBHE Ordering and Design Verification of Proprietary Vessels) 3.2.2 REGISTRATION The Site Responsible Engineer is to make sure that: (a) All Pressure Vessels (with the possible exception of those listed in Appendix A) are Registered and Periodically Inspected as required by GBHE, and also that: • Pressure Vessels are identified from flowsheets, line diagrams and equipment lists, taking care not to overlook additions arising from plant modifications. • used Pressure Vessels designed for other duties are not Registered and put into service until they have been: - approved by the Design Authority with a Formal Design Review; - thoroughly inspected and approved by an inspection authority. (b) Documentation is provided in the Registration file as listed in registry. Refinery Process Stream Purification Refinery Process Catalysts Troubleshooting Refinery Process Catalyst Start-Up / Shutdown Activation Reduction In-situ Ex-situ Sulfiding Specializing in Refinery Process Catalyst Performance Evaluation Heat & Mass Balance Analysis Catalyst Remaining Life Determination Catalyst Deactivation Assessment Catalyst Performance Characterization Refining & Gas Processing & Petrochemical Industries Catalysts / Process Technology - Hydrogen Catalysts / Process Technology – Ammonia Catalyst Process Technology - Methanol Catalysts / process Technology – Petrochemicals Specializing in the Development & Commercialization of New Technology in the Refining & Petrochemical Industries Web Site: www.GBHEnterprises.com
  • 13. 3.2.3 PERIODIC INSPECTION The Site Responsible Engineer is to make sure that: (a) Periodic Inspection is considered during Registration. (b) Pressure Vessels and associated equipment should be allocated inspection grades based on the ability to predict behavior in service and / or the expected rate of deterioration. (c) GBHE guidance on inspection intervals for the different grades is considered when deciding on the maximum intervals between Periodic Inspections. (d) Periodic Inspection of Pressure Vessels includes: • checking the condition by visual inspection, supplemented as necessary by other techniques and measurements to determine fully the extent of loss of thickness, pitting, cracking or other defects;. • consideration of both internal and external features; • internal inspection by entry where access is possible, except where satisfactory alternative means of internal examination are available and where the Site Responsible Engineer waives entry; • Hydraulic (not pneumatic) pressure testing when it is the only practical way of demonstrating integrity (e.g. for complex tubular arrangements). Pressure testing only confirms the ability of the equipment to hold pressure at the time of the test and does not provide equal reassurance of long term integrity to that gained from thorough examination of surfaces. As such it is not a generally preferred means of examination for any equipment. Note: The in service pressure testing of equipment instead of inspection requires a written procedure and Risk Assessment. Refinery Process Stream Purification Refinery Process Catalysts Troubleshooting Refinery Process Catalyst Start-Up / Shutdown Activation Reduction In-situ Ex-situ Sulfiding Specializing in Refinery Process Catalyst Performance Evaluation Heat & Mass Balance Analysis Catalyst Remaining Life Determination Catalyst Deactivation Assessment Catalyst Performance Characterization Refining & Gas Processing & Petrochemical Industries Catalysts / Process Technology - Hydrogen Catalysts / Process Technology – Ammonia Catalyst Process Technology - Methanol Catalysts / process Technology – Petrochemicals Specializing in the Development & Commercialization of New Technology in the Refining & Petrochemical Industries Web Site: www.GBHEnterprises.com
  • 14. (e) Pressure Vessels which have limited life (due to high temperature creep, or to fatigue cracking due to pressure cycling or frequent start up and shut down) are categorized and inspected as advised. (f) All non-registered Pressure Vessels are inspected externally at appropriate intervals. Adequate inspection and maintenance should take place to ensure their continuing fitness for purpose. (G) Specialist advice is sought for Pressure Vessels of particular construction and / or containing certain types of chemicals. Refinery Process Stream Purification Refinery Process Catalysts Troubleshooting Refinery Process Catalyst Start-Up / Shutdown Activation Reduction In-situ Ex-situ Sulfiding Specializing in Refinery Process Catalyst Performance Evaluation Heat & Mass Balance Analysis Catalyst Remaining Life Determination Catalyst Deactivation Assessment Catalyst Performance Characterization Refining & Gas Processing & Petrochemical Industries Catalysts / Process Technology - Hydrogen Catalysts / Process Technology – Ammonia Catalyst Process Technology - Methanol Catalysts / process Technology – Petrochemicals Specializing in the Development & Commercialization of New Technology in the Refining & Petrochemical Industries Web Site: www.GBHEnterprises.com
  • 15. Refinery Process Stream Purification Refinery Process Catalysts Troubleshooting Refinery Process Catalyst Start-Up / Shutdown Activation Reduction In-situ Ex-situ Sulfiding Specializing in Refinery Process Catalyst Performance Evaluation Heat & Mass Balance Analysis Catalyst Remaining Life Determination Catalyst Deactivation Assessment Catalyst Performance Characterization Refining & Gas Processing & Petrochemical Industries Catalysts / Process Technology - Hydrogen Catalysts / Process Technology – Ammonia Catalyst Process Technology - Methanol Catalysts / process Technology – Petrochemicals Specializing in the Development & Commercialization of New Technology in the Refining & Petrochemical Industries Web Site: www.GBHEnterprises.com

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