GB/T 33578.4-2026Rules for risk-based inspection of complete units — Part 4: Parabolic trough solar thermal power plants (English PDF)

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents".

This document is Part 4 of GB/T 33578 "Risk-Based Inspection Guidelines for Complete Equipment". GB/T 33578 has been published as follows. Part 2.

---Part 1: Ethylene Plant;

---Part 2: Catalytic Cracking Unit;

---Part 3: Chlor-alkali Chemical Plant;

---Part 4: Parabolic Trough Solar Thermal Device.

Introduction

GB/T 26610, "Guidelines for Risk-Based Inspection of Pressure Equipment Systems," provides guidelines for risk-based inspection of pressure equipment in chemical engineering plants.

The general requirements for inspection, to facilitate the engineering application of risk-based inspection methods in typical key chemical plants, are formulated in GB/T 33578. "Risk-Based Inspection Guidelines for Complete Equipment Sets". GB/T 33578 consists of four parts.

---Part 1: Ethylene Unit. The purpose is to provide a damage distribution map of the ethylene unit and the damage modes of key equipment, clarifying the damage patterns of the ethylene unit.

The inspection methods for the ethylene plant were developed, forming a risk-based inspection guideline.

---Part 2: Catalytic Cracking Unit. The purpose is to provide a damage distribution map of the catalytic cracking unit and the damage modes of key equipment, clarifying... Establish inspection methods for catalytic cracking units and develop risk-based inspection guidelines for catalytic cracking units.

---Part 3: Chlor-alkali Chemical Plant. The purpose is to provide damage distribution maps and damage modes of key equipment in chlor-alkali chemical plants, clarifying... Establish inspection methods for chlor-alkali chemical plants and formulate risk-based inspection guidelines for chlor-alkali chemical plants.

---Part 4: Parallel Solar Thermal Unit. The purpose is to provide a damage distribution map of the parallel solar thermal unit and the damage modes of key equipment, clarifying... The risk assessment and inspection methods for trough-type solar thermal devices are determined, and risk-based inspection guidelines for trough-type solar thermal devices are formulated.

1 Scope

This document establishes general guidelines for risk-based inspection (RBI) of trough-type solar thermal devices, describing the general process and device damage mode classification. Fabrication, risk assessment, and risk-based inspection procedures.

This document applies to the inspection of pressure-bearing equipment in trough-type solar thermal systems that have undergone RBI projects. Other types of solar thermal systems can refer to this document for further information.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.

For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies to this document.

GB/T 26610.1 Risk-based inspection guidelines for pressure equipment systems - Part 1: Basic requirements and implementation procedures

GB/T 26610.2 Guidelines for Risk-Based Inspection of Pressure Equipment Systems - Part 2: Risk-Based Inspection Strategies

GB/T 26610.3 Risk-based inspection guidelines for pressure equipment systems - Part 3: Qualitative risk analysis methods

GB/T 26610.4 Risk-based inspection guidelines for pressure equipment systems - Part 4: Quantitative analysis method for failure probability

GB/T 26610.5 Risk-based inspection guidelines for pressure equipment systems - Part 5: Quantitative analysis of failure consequences

GB/T 30579 Damage Mode Recognition for Pressure Equipment

TSG21 Safety Technical Supervision Regulations for Stationary Pressure Vessels

TSG31 Technical Specification for Safety of Industrial Pipelines

3 Terms and Definitions

The terms and definitions defined in GB/T 26610.1~GB/T 26610.5 and GB/T 30579, as well as the following terms and definitions, apply to this document.