ASME (American Society of Mechanical Engineers), have recently revised their PCC-1 guidelines for Pressure Boundary Bolted Flange Joint Assembly.
This document, written by engineers, scientists, and business executives across the bolting industry, addresses the key factors involved in bolting principles and the assembly of bolted flange joints. While PCC-1 is only a guideline, it is considered by many as the standard for bolted flange joints globally.
In our previous ASME PCC1-2022 blog, we discussed what these changes meant for joint assembly record compliance, with particular reference to our multi-part tear off flange tag.
While our multi-part tear off flange tag is recommended by ASME for joints of all risk levels, there are other compliant tags which should be considered. Outlined in the document, are five examples of compliant joint assembly records, each recommended for use according to the risk level of the joint, and the needs of the user. These include:
- Joint identification tags
- Multi-part tear off flange tags
- Long assembly record tags
- Medium-length assembly record tags
- Short assembly record tags
In this article, we are going to take you through the five PCC-1-2022 compliant flange tags (with examples); and what level of joint risk they are recommended for.
PCC-1-2022: What are the purposes of Joint Assembly Record tags?
According to the revised PCC-1 guidelines, joint assembly records (Flange Tags) serve the following three purposes:
- Quality Control: Joint assembly records document the name and actions of each person responsible for a particular portion of the joint assembly process. This allows for better accountability if an incident occurs.
- Joint History: Joint assembly records document past assembly processes, observations made during the assembly, and lessons learned. This will allow future joint assemblers to mitigate the risk of a leak and look for guidance if there is one.
- Assembly Practices: Joint assembly records show all joint-specific practices, and deviations from, changes to, comments, and observations about the site assembly procedure. This data can be gathered by work personnel to update the assembly procedure before the next joint maintenance activity.
1) Compliant tags for unique joint identification
Joint ID Tag
The first step in maintaining joint assembly records is to identify each joint uniquely. To do so, each joint must have a unique identifier associated with a joint ID tag. This tag serves the following three purposes:
- Identification: The unique identifier tag enables an assembler to identify the correct joint before beginning any maintenance.
- Storage: The unique identifier tag enables the storage of assembly records.
- Hazard Mitigation: The unique identifier tag minimizes potential hazards associated with the disassembly, assembly, and tightening of the wrong joint.