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Industrial Plant Inspection

The Industrial Plant Inspection article provides you with information about in-
service inspection of fix equipment in the industrial plants.

The content will introduce you the codes and standards and summaries of
important points for each equipment type.

The phrases "Industrial plant inspection activities" refers to the inspection or


integrity department in oil, gas, chemical or other industrial plants, which is
responsible for carrying out the inspection in an operating unit.

The inspections are done according to the following timelines:

 Periodic external inspections


 Overhaul or shutdown internal inspections
 Emergency shutdown inspections

The inspection department in the industrial plants generally takes care of the static
equipment; rotating, electrical and instrumental equipment are not in the scope of
the inspection department, and normally, maintenance department takes care of
those.

Some local authorities mandate that pressurized equipment be inspected in


specific intervals by third party inspection agencies. This is normally called third
party inspection of a plant.

The static equipment can be categorized as follows when referring to industrial


plant inspections:

Industrial Plant Inspection - Pressure vessels


The in-service inspection code for your pressure vessel inspection is API
Standard 510. The other API and ASME Codes can be used as supplementary
information.

The following standards, codes and recommended practices are used for pressure
vessel inspection:

 API Standard 510; Pressure Vessel Inspection Code: In-Service


Inspection, Rating, Repair, and Alteration
 API Recommended Practice 572; Inspection Practices for Pressure
Vessels
 API Recommended Practice 576; Inspection of Pressure-relieving Devices
 API Recommended Practice 577; Welding Inspection and Metallurgy
 API Recommended Practice 571; Damage Mechanism Affecting Fixed
Equipment in the Refining Industry
 ASME PCC-2; Repair of Pressure Equipment and Piping
 National Board Inspection Code NB-23
 ASME Section VIII; Rules for Constructing Pressure Vessels
 Section IX, Welding and Brazing Qualifications

The last two items are specific codes for new construction; however, most of the
technical requirements for design, welding, NDE, and materials can be applied to
the inspection, rerating, repair, and alteration of in-service pressure vessels.

ASME PCC-2, NB-23 and API 510 can be used for pressure vessel repair.

The NB-23 code covers the rules and guidelines for in-service inspection, repair,
and alteration of pressure- retaining items.

The API 510 Training Course is 7.5 days video training program and available
online and is the Prep course for API 510 Pressure Vessel Inspector Exam.
Besides the student that successfully pass this training course exam, receive I4I
academy certificate with 60 hours training credit.

Industrial Plant Inspection - Piping Systems


The in-service inspection code for your piping system inspection is API Standard
570. The other API and ASME Code can be used as supplementary information.

The following standards, codes and recommended practices are used for pressure
vessel inspection:

 API Standard 570; Piping Inspection Code: In-service Inspection, Rating,


Repair, and Alteration of Piping Systems
 API Recommended Practice 574; Inspection Practices for Piping System
Components
 API Recommended Practice 577; Welding Inspection and Metallurgy
 API Recommended Practice 571; Damage Mechanism Affecting Fixed
Equipment in the Refining Industry
 API Recommended Practice 578; Material Verification Program for New
and Existing Alloy Piping Systems
 ASME PCC-2; Repair of Pressure Equipment and Piping
 ASME B16.5, Pipe Flanges and Flanged Fittings
 ASME Section B31.3; Rules for Constructing Process Piping
 Section IX, Welding and Brazing Qualifications
The last three items are specific codes for new construction; however, most of the
technical requirements for design, welding, NDE, and materials can be applied to
the inspection, rerating, repair, and alteration of in-service piping systems.

ASME PCC-2, NB-23 and API 570 can be used for piping repair.

The API 570 Training Course is 6 days video training program and available online
and is the Prep course for API 570 Piping inspector Exam. Besides the student
that successfully pass this training course exam, receive I4I academy certificate
with 48 hours training credit.

Industrial Plant Inspection - Storage Tank


The in-service inspection code for storage tank inspection is API Standard 653.
The other API and ASME Codes can be used as supplementary information.

Following standards, codes and recommended practices are used for storage tank
inspection:

 API Standard 653; Tank Inspection, Repair, Alteration, and Reconstruction


 API Recommended Practice 575; Inspection of Atmospheric and Low-
Pressure Storage Tanks
 API Recommended Practice 651; Cathodic Protection of Aboveground
Petroleum Storage Tanks
 API Recommended Practice 652; Lining of Aboveground Petroleum
Storage Tank Bottoms
 API Recommended Practice 577; Welding Inspection and Metallurgy
 API Recommended Practice 571; Damage Mechanism Affecting Fixed
Equipment in the Refining Industry
 API Standard 650, Welded Steel Tanks for Oil Storage
 Section IX, Welding and Brazing Qualifications

The last two items are specific codes for new construction; however, most of the
technical requirements for design, welding, NDE, and materials can be applied to
the inspection, rerating, repair, and alteration of in-service storage tanks.

Industrial Plant Inspection - Steam Boiler


The In-Service Inspection code for your steam boiler is ASME Section VII. The
API also has recommended practice for boiler inspection.

The following standards, codes and recommended practices are used for steam
boiler inspection:

 ASME Section VII Recommended Guideline for the Care of Power Boilers
 API Recommended Practice 573; Inspection of Fired Boilers and Heaters
 API Recommended Practice 577; Welding Inspection and Metallurgy
 API Recommended Practice 571; Damage Mechanism Affecting Fixed
Equipment in the Refining Industry
 ASME Section I; Rules for Constructing of Power Boiler
 Section IX, Welding and Brazing Qualifications

The last two items are specific codes for new construction; however, most of the
technical requirements for design, welding, NDE, and materials can be applied to
the inspection, rerating, repair, and alteration of boilers.

Industrial Plant Inspection - Process Heater


The In-Service Inspection code for your process heater is API Recommended
Practice 573.

The following standards, codes and recommended practices are used for process
heater inspection:

 API Recommended Practice 573; Inspection of Fired Boilers and Heaters


 API Recommended Practice 577; Welding Inspection and Metallurgy
 API Recommended Practice 571; Damage Mechanism Affecting Fixed
Equipment in the Refining Industry
 API Standard 560; Fired Heaters for General Refinery Services
 API Recommended Practice 556; Fired Heaters and Steam Generators
 API Recommended Practice 535; Burners for Fired Heaters in General
Refinery Services
 API Recommended Practice 534; Heat Recovery Steam Generators
 ASME Section IX, Welding and Brazing Qualifications

The last five items are specific codes for new construction; however, most of the
technical requirements for design, welding, NDE, and materials can be applied to
the inspection, rerating, repair, and alteration of in-service process heaters.

Industrial Plant Inspection - Industrial Valves


The in-service inspection code for your Pressure-relieving Devices is API
Recommended Practice 576. This code needs to be used in conjunction with API
STD 510.

The API 510 determines the requirement for inspection interval and API RP 576
specifies the inspection practice.
For more information, please review the Pressure Safety Valve Inspection article.
This article covers shop inspection and in-service inspection. You may review only
the in-service inspection section.

The in-service code for other industrial valves such as Globe Valve, Gate Vale,
Check Valve and Plug Valve is addressed in the piping in-service inspection code
as stated in above. In other words, in API STD 570 and API RP 574.

If a major repair is carried out, then valve testing might be needed, which can be
done based on API Standard 598.

Industrial Plant Inspection - Risk Based Inspection


Based on the API 580 definition, the risk based inspection is a risk assessment
and management process that is focused on the loss of containment of
pressurized equipment in processing facilities, due to material deterioration.

These risks are managed primarily through equipment inspection.

The technique is almost new and applied in processing plants and is used as a
supplementary recommended practice for inspection intervals, method of
inspections and scope of inspections.

For example, you may determine your pressure vessel internal inspection based
API 510 requirement or carry out the risk based inspection and determine the
interval, method of inspection and scope of inspection.

The API 510 allows you to choose this alternative method. API RP 580 is provides
the definition and general requirement for risk based inspection and API RP 581
introduces you to a specific quantitative methodology for risk based inspection
implementation in your plant.

The Plant inspection is very wide in scope, and a single article might not be enough
to cover all aspects of this.

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