49 CFR PART 193 EBOOK!
However, as 49 CFR, Part has not been updated to incorporate more recent versions of NFPA 59A, facilities under PHMSA jurisdiction must follow 49 CFR. time-consuming process prone to errors. The Code of Federal Regulations (49 CFR. ) defines safety standards for LNG facili- ties covered by federal pipeline. 49 CFR - LIQUEFIED NATURAL GAS FACILITIES: FEDERAL Nomenclature changes to part appear at 71 FR , June 9,
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Monitoring must be accomplished by watching or listening from an attended control center for warning alarms, such as gas, temperature, pressure, vacuum, and flow alarms, or by conducting an inspection or test at intervals specified in the operating procedures.
The procedures must provide for the following: 49 cfr part 193 necessary to restore or maintain service, or for safety, no component involved in the incident may be moved from its location or otherwise altered until the investigation is complete or the investigating agency otherwise provides.
For these facilities, budgets also tend to be more limited. Therefore the cost of installing mitigation measures can be prohibitive. In these cases, an accurate determination of the exclusion zones is 49 cfr part 193 to determine the viability of a project.
The screening calculations using PHAST rarely suffice for maintaining control in the exclusion zones. For example, a flashing and jetting release from a 2-inch hole in an LNG truck loading supply line at 40 psig will travel about feet, which is likely to exceed 49 cfr part 193 distance available in many satellite LNG facilities.
Design, Siting Considerations for LNG Facilities | Pipeline & Gas Journal
The most common mitigation measures, due to their versatility, are vapor barriers: Other forms of mitigation to reduce the momentum and subsequent cloud distance from 49 cfr part 193 jetting and flashing release can be pipe rack barriers, installing piping in trenches, or the use of shrouds or other deflective objects.
In 49 cfr part 193, good engineering practices during the preliminary plot plan development can locate the worst case spills away from the facility property line or position equipment to minimize piping lengths while meeting setback and spacing requirements to reduce vapor dispersion distances.
Conclusions A fundamental requirement for the safe design of LNG facilities in the United States is that the public 49 cfr part 193 public property be protected from credible accidents within the facility.
The current regulatory requirements for facility siting can be significantly different, depending on whether a facility is under federal PHMSAstate or local jurisdiction.
Therefore, one of the first steps in the planning of an LNG 49 cfr part 193 should be to determine applicable jurisdiction and performing a preliminary siting analysis in accordance with the jurisdictional requirements. This simple, yet critical, step will provide project developers with the level of confidence in the ability to site the project early on in the design phase before significant engineering and capital have been invested early on in the project.
This design also minimizes the sizing of the vent system and conserves resources so required. The vaporizers use a potassium formate heat transfer fluid to vaporize the LNG. This fluid is then rewarmed by passing through ambient air heat exchangers.
Examples of 49 CFR Part Jurisdiction | PHMSA
A thorough review and consideration of other scenarios led to this conclusion. Those studies, calculations and results are detailed in the attached document, which has also been provided to your technical staff.
Standard analytical methods were used.