GB/T 33578.2-2017Guideline of risk based inspection of complete units—Part 2: Catalytic cracking units (English PDF)

Foreword

GB/T 33578 "Set of equipment based on the risk of inspection rules" is divided into two parts.

- Part 1: Ethylene plant;

Part 2: Catalytic Cracking Unit.

This part is part 2 of GB/T 33578.

This part is drafted in accordance with the rules given in GB/T 1.1-2009.

1 Scope

This part of GB/T 33578 gives the risk-based inspection (RBI) implementation details for catalytic cracking units.

This part applies to the fluidized catalytic cracking unit to implement the RBI project pressure equipment, other types of catalytic cracking unit (such as fixed Bed, moving bed catalytic cracking unit) can refer to use.

This part does not apply to safety valve, safety valve calibration strategy see GB/T 26610.2.

2 Normative reference documents

The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this document. For undated references, the latest edition (including all modifications) applies to this document.

GB/T 26610.1 Guidelines for the implementation of risk-based inspection systems for pressurized equipment systems - Part 1: Basic requirements and procedures

GB/T 26610.2 Guidelines for the implementation of risk-based inspection systems for pressurized equipment systems - Part 2: Risk-based inspection strategies

GB/T 26610.3 Guidelines for risk-based inspection of pressurized equipment systems - Part 3: Qualitative analysis of risk

GB/T 26610.4 Guidelines for risk-based inspection of pressure equipment systems - Part 4: Quantitative analysis of failure possibilities

GB/T 26610.5 Guidelines for the implementation of risk-based inspection systems for pressurized equipment systems - Part 5: Quantitative analysis of failure consequences

GB/T 30579 Damage pattern recognition of pressure equipment

SH/T 3096 Guidance for selection of equipment and piping design for high sulfur crude oil processing equipment

3 Terms and definitions

The terms and definitions defined in GB/T 26610.1 to 26610.5 and GB/T 30579 apply to this document.

4 General

4.1 This part is based on GB/T 26610.1 ~ 26610.5 and GB/T 30579, for the typical oil refinery plant --- catalyzed Cracking process, the characteristics of equipment to develop the inspection rules. This section does not replace the risk assessment work, but GB/T 26610.2 Application of specific devices.

4.2 This part of the catalytic cracking unit in the process to determine the potential damage to the equipment based on the model, given the typical equipment and other Special parts of the test method, the rest of the equipment based on damage to the test method according to GB/T 26610.2 to determine.

4.3 The damage mode of the catalytic cracking unit described in this section is determined by its typical materials, typical process conditions, and is likely to occur. hurt. The actual damage mode of the actual catalytic cracking unit should be adjusted according to the actual situation. In order to allow users to distinguish between primary and secondary, this department Based on the analysis of the damage pattern and the actual use experience, according to the severity and frequency of the damage pattern, the damage pattern is classified as the main Damage pattern and secondary damage pattern.

4.4 This part of the equipment commonly used materials based on the domestic catalytic cracking device equipment, practical experience and SH/T 3096 to determine the actual use.

4.5 The potential damage modes of the pressure equipment in this part are given under normal operating conditions, under normal conditions or other special conditions (such as super Load, low load, raw material composition changes, ultra-designed) damage patterns and risk-based inspection rules determined by the actual situation.