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API RP 7HU1:2009 pdf download

API RP 7HU1:2009 pdf download.Safe Use of 2-inch Hammer Unions for Oilfield Applications.
5 Measures to Prevent the Make-up of Mismatched Components
5.1 General
The recommendations set forth herein are preventative measures intended, in the right combination for a given fleet or equipment package, to be a procedural solution to the mismatci, problem. Users and suppliers of hammer union components should adopt one or more of these measures that are reasonably practicable for their operations.
5.2 Replace All 2-inch Hammer Union Components in Fleet to 2-inch Figure 1502
Until an industry design specification is developed, as an inteflm measure, users should consider replacing all 2-inch pipe work hammer union components to 2-inch Figure 1502 and eliminate all 2-inch Figure 402, 602 and 1002 hanirner union components from their fleet.
5,3 Go/No-go Gauges
Go!no-go gauges should be used on all 2-wich female subs to determine whether the component is acceptable or unacceptable for use with a 2-inch Figure 1502 male sub and nut. As an example, the gauge shown in Figure 5 will no-go on a 2-inch Figure 1502 female sub deeming the component acceptable for use with a 2-inch Figure 1502 male sub and nut, However, The gauge will go on a 2-inch Figure 402, Figure 602 or Figure 1002 female sub as shown in Figure 6 deeming the component unacceptable for use with a 2-wich Figure 1502 male sub and nut.
5.8 Job Site Inventory of Hammer Union Components
Users should maintain an inventory of hammer union components by job site and wnplernent a system by which to identify/inspect any additional equipment with hammer union components that arrives on the job site. This inventory control process at the job sate should help ensure no mismatches, which is especially important when temporary hammer union components in use by one company are being connected to installed hammer union components in use by another company.
5.9 Color-coding
Hammer union components should be color-coded by the user to indicate the union figure number or working pressure of the equmenL Users who opt to have such a color code should publish the code and make it available to all staff, suppliers, and customers. An example of a color-coding system can be found In Entorn, IRP 419.
NOTE Color-coding sho not be rebed upon as the pnmary design identifier as It is not permanent (due to enwonmenlal exposure in field) and can easdy be mipacted by human error or conflict with other color-coding used in the field.
6 Mitigating the Effects of Mismatched Components Parting Explosively
Th€ following mitigation measures should be considered and applied to protect people In the case of a mismatched hammer union or other component failure. Most. if not all, of these measures should be applied to every job utilizing hammer union components.
a) Use barriers andfor restricted access of personnel for all pressurized operations. Place staff where they are minimally exposed.
b) Orient outlet and instrumentation fittings at 9O or 180 to an employee’s expected body placement when It is necessary for an employee to be new pressurized equipment (e.g. to operate valves or read gauges).
C) Locate the temporary pipe connections where there Is less exposure to personnel (e.g. under the ng floor).
d) Use a system of restraint for pework that has been proven In pressurized operations. Examples Include fiber rope restraints and safely clamps with wire rope. Personnel should be trained In the proper installation of the safety restraint system.
7 General Safety Recommendations
7.1 General
The general safety recommendations for working with temporary piping, hammer unions, and/or union components described in 7.2 through 7.9 should be considered to help protect people and property. This list is not meant to be all- inclusive,
7.2 Personal Protective Equipment (PPE)
Proper PPE should be used during make-up and breakout of hammer union components. A hazard assessment should be performed to determine the proper PP based on the specific equipment and tools being used
7.3 Inspection, Maintenance, and Testing
Hammer union components should be inspected, maintained, tested, and removed from service (due to corrosion, erosion, damage, and deformation of wing nut ears) based on manufacturer’s recommendations and experience by the user. This should include, but not be limited to, inspection of the threads for excessive wear as a result of repeatedmake-up/break-outs.


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