ASME PTB-12:2017 pdf free download

ASME PTB-12:2017 pdf free download.Guidelines for Addressing Data Gaps and Recordkeeping for ASME B31.4, B31.8 and B31.8S for Pipeline Integrity Management.
The authors have matte similar observations during their professional experiences with records review and management. There arc occasions where operators have stored what are now recognited to he highly valuable records. hut it is highly unusual that they stored them to meet any specific regulatory requirement. When highly valuable documents are discovered (particularly for pipe that was constructed prior to regulation and/or pipe that was acquired), they arc frequently mci with pleasant surprise.
In 1938. American Standards Association ASA B31.l first required that records be kept on welder qualifications and their identifying marks. Subsequent revisions expanded welder related record keeping. In 1955. B3l.l.8 iwhich eventually became B31.8) first reconirnended basic risk based design concepts with 4 location class factors. It required the pipeline operator. or contractor, to maintain records related to welders and pressure testing. The standard was the first to recommend operations and maintenance records mentioning external and internal corrosion related to leaks and repairs, and inspection reports. A later revision in 1968 required recordkeeping related to corrosion inspection and leak investigation.
The federal pipeline regulations were passed in the 1960s with the first federal laws effecting liquid pipelines and the Natural Gas Pipeline Safety Act of 1968. Concurrent to these shifts in pipeline records requirements and expansion of the U.S. pipeline infrastructure indicated above was large amounts of population growth over the past 54)-60 years. Pipelines had to be re-routed to accommodate the additional infrastructure ieg.. highways. waterline’s) in congested areas, which created more records and’or additional pipeline system materials to track.
The Natural Gas Integrity Management Rule 49 CFR Part 193 Subpart 0 was introduced in 2(X)3, three years aker a similar rule for liquid pipelines 49 CFR Part 195). Following the integrity management rules. operators were more frequently audited, which required them to focus more on material properties as part of risk modeling and fitness-for-service analysis The gas (and. similarly, the liquid) integrity management (IM) rule specified how pipeline operators must identify, prioritize, assess, evaluate, repair, and validate the integrity of gas (or liquid) transmission pipelines that could, in the event of a leak or failure, affect High Consequence Areas HCAs) within the U.S. The IM rules required large improvement in KCA-related record keeping for most operators in the U.S. [8]
Once the proper records have been located, they should he digitally captured (i.e.. scannedt. Care must be taken to ensure that there is sufficient resolution to make quality copies. In the authors’ experiences. 300 I’M’ is an acceptable resolution for image capture. It provides adequate resolution, while not overburdening storage and network infrastructures with its file size requirements. It is important to have color scanning capabilities, but it is preferred to hase the option to scan in color only when needed. This will allow for faster load times for black and white documents, whenever possible.
The authors consider the following guidelines 1271 good practice for pipeline records digitization efforts:
• Digitize to the original size of the records.
• No cropping allowed records should be complete.
• Back reflection of originals — Back all originals with bright white opaque paper.
• Scanning oversize items — oversize items may produce very large file sizes: legibility of small characters may need to be evaluated for resolution versus file size needs.’
Figure 3-I is an example of a pressure tesi dead weight chart which is scanned at 300 PPI and is color-coded to indicate temperature in one color and pressure in another. This image shows that the image quality is certainly sufficient for retrieval and review by Decision Makers. The color scan was critical to this image (to identify the red temperature trace with respect to the blue pressure trace). There is a portion of the chart that is truncated and although it appears there is no critical information missing. this should be avoided because future reviewers may wonder about the missing portion. Some digital document management systems will allow quality control comments to be stored as metadata with each record. These comments can be populated to assure future reviewers that there was no critical information missing. or no different information in the original. Populating this field can be time consuming. but it can provide useful quality control information if an operator would like a permanent digital file structure (as discussed below).