Boiler & Pressure Equipment Inspection
## 1. Service Introduction
Iran Standard and Quality Inspection Company (ISQI) provides specialized inspection and technical assessment services for steam boilers, hot water boilers, pressure vessels, and related equipment, with the aim of identifying defects, assessing technical conditions, and supporting safe operation.
These services include reviewing equipment documents and records, internal and external inspection, assessment of the condition of surfaces and connections, thickness measurement, corrosion assessment, and conducting or supervising the required tests. The inspection scope is determined according to the type of equipment, service conditions, maintenance history, and applicable technical and legal requirements.
Inspection results provide a basis for decision-making regarding corrective actions, repairs, supplementary inspections, and conditions for continued operation of the equipment.
## 2. Scope of Services
The services in this section, according to the type of equipment and project scope, include the following:
| Review of technical documents, design specifications, and inspection and maintenance records | |
| External inspection of the body, connections, nozzles, and accessible components | |
| Internal inspection after shutdown, securing, and preparation of the equipment | |
| Examination of welds and repaired areas | |
| Thickness measurement and assessment of thickness reduction | |
| Examination of corrosion, erosion, deposits, and signs of thermal damage | |
| Inspection of tubes, tube sheets, and related components, according to the type of equipment | |
| Examination of the apparent condition of supports, insulation, and accessible coatings | |
| Examination of the condition of safety equipment and relevant test or calibration records within the scope of the contract | |
| Conducting or supervising pressure testing, where required and in accordance with the approved procedure | |
| Quality control of repairs and review of post-repair test results | |
| Preparation of technical reports and provision of inspection, repair, and monitoring recommendations | |
## 3. Inspection Methods and Specialized Testing
The selection of the testing method is carried out according to the material, thickness, equipment geometry, accessibility conditions, and expected damage mechanism.
| Method or Activity | Application |
| Visual Inspection (VT) | Examination of the condition of surfaces, components, and visible discontinuities |
| Ultrasonic Thickness Measurement | Measurement of remaining thickness and monitoring of metal loss |
| Magnetic Particle Testing (MT) | Identification of surface and near-surface discontinuities in ferromagnetic materials |
| Liquid Penetrant Testing (PT) | Identification of surface-opening discontinuities in suitable materials |
| UT, PAUT, and TOFD Testing | Examination of internal discontinuities and assessment of welds, according to the application |
| Tube Inspection using IRIS or Eddy Current | Examination of tube condition according to material and preparation conditions |
| Corrosion Mapping | Preparation of a thickness map and determination of the extent of areas affected by thickness reduction |
| Pressure Testing | Assessment of integrity under the test conditions specified in the governing reference |
Pressure testing does not replace other required inspections, and its implementation requires examination of equipment conditions, risk assessment, and compliance with the relevant safety requirements.
## 4. Standards and Specialized References
The applicable references, depending on the type of equipment and project requirements, include:
| Reference | Area of Application |
|—|—|
| ASME BPVC Section I | Requirements for the construction of power boilers, where this code is applicable |
| ASME BPVC Section IV | Requirements for the construction of heating boilers, according to equipment classification |
| ASME BPVC Section VIII | Requirements for the construction of pressure vessels |
| ASME BPVC Section V | Requirements for non-destructive examination methods |
| API 510 | Inspection during operation, repair, and alteration of pressure vessels within the scope of the standard |
| API 573 | Inspection guidelines for boilers and fired heaters within the relevant scope |
| NBIC | Requirements related to inspection, repair, and alteration, where accepted by the competent authority |
| API 579-1 / ASME FFS-1 | Assessment of fitness for continued service, where applicable |
| Relevant national and legal requirements | Mandatory requirements applicable to the equipment and operating location |
| Manufacturer’s instructions and client’s technical specifications | Specific requirements for operation, inspection, and maintenance |
Construction codes alone do not replace periodic inspection requirements and operating regulations. The basis of inspection and acceptance criteria for each item of equipment must be specified prior to the execution of the services.
## 5. ISQI Experience and Technical Knowledge
The services in this section utilize ISQI’s capabilities in the fields of static equipment inspection, non-destructive testing, corrosion monitoring, and assessment of equipment conditions in operation.
The combination of document review, inspection observations, and test results enables a more comprehensive assessment of equipment condition and the provision of technical recommendations appropriate to actual operating conditions.
The technical basis of these services rests on three main pillars:
Understanding of Equipment and Service Conditions | Selection of the Appropriate Inspection Method | Analysis of Results and Documentation
## 6. Selected Project Experience
– Arak Machine Manufacturing company
– Pakman Company
– Rafe Steel Tank Company
– Hararat Gostar Company
– Tahvieh Danan Tehran Company
## 7. Industries and Equipment Covered
| Industries |
|—|
| Oil and Gas |
| Refineries |
| Petrochemical |
| Power Plants |
| Chemical Industries |
| Steel and Mining Industries |
| Other industrial units with boilers and pressure equipment |
### Equipment
| Equipment Type |
|—|
| Steam Boilers |
| Hot Water Boilers |
| Pressure Vessels |
| Pressurized Drums and Process Vessels |
| Pressurized Heat Exchangers |
| Tubes and components related to the pressure circuit |
## 8. ISQI Approach
In the inspection of boilers and pressure equipment, the objective is not merely to record visible defects; rather, it is to assess the impact of discontinuities and damage mechanisms on equipment integrity and provide reliable technical information for decision-making.
ISQI’s approach is based on a systematic examination of equipment condition, consideration of operating records, selection of appropriate tests, and provision of clear recommendations for repair, monitoring, and future inspections. Opinions regarding conditions for continued operation are also provided within the scope of the inspection, the available data, and the requirements of the governing reference.
Contact Number:0214304217
