What’s the exclusion zone for a 10k psi pressure test
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Published by SALUSI am unable to provide a specific exclusion zone for a 10k psi pressure test based on the documents provided. However, here are some general safety considerations for pressure testing:
- General Safety Measures: Ensure any hazardous energy that may be released from pressurized equipment is directed away from workers, or that shielding, restraints, or other controls are in place to protect workers [1].
- Well Stimulation: During well stimulation or similar operations, if a working pressure of 2,000 kilopascals (approximately 290 psi) or more is applied to the piping system, equipment located between a pump or sand concentrator and the wellhead should be controlled remotely from a location outside the potential danger area [2]. No worker should be required or permitted to enter the potential danger area while the system is pressurized [2].
- Piping Systems: Piping systems should be designed, installed, and maintained to withstand the maximum anticipated pressures and tested to verify they can withstand these pressures [1]. They should also be operated within the maximum pressure limits [1].
- Flammable Fluids: If flammable fluids are being pumped during fracturing and acidizing treatment, approved and properly maintained fire suppression equipment should be provided [2].
- Location of Equipment: Ensure the tank truck is located on the far side of the rig tank from the wellbore and at a safe distance during loading and unloading [2].
- Warning Signs: Adequate warning signs prohibiting the presence of workers should be positioned along the discharge pipelines before pressurization begins [2].
Given the high pressure of 10k psi, it is crucial to conduct a thorough risk assessment to determine a safe exclusion zone, considering factors such as the specific equipment being tested, the potential failure modes, and the surrounding environment.
Sources used for this answer
[1] Occupational Health and Safety Code
Page 304
Open source documentSource excerpt
- (i) piping from the discharge side of the pressure relief device is continuously sloped to drain fluids and protect fluids from freezing. 776 (2) An employer must ensure that pipes and fittings installed and maintained at a work site meet the requirements of ASME B1.20.1-2013 (R2018), Pipe Threads, General Purpose (Inch) , for threaded connections. 776 (3) An employer must ensure that a mud gun used for jetting is secured against unintended movement. 776 (4) If a downhole positive displacement pump is used in a wellhead, an employer must ensure that the pump is prevented from creating pressures that exceed the pressure rating of the piping and pumping system. 776 (5) An employer must ensure that no valve is closed on the discharge line of a positive displacement pump while the pump is in operation. 776 (6) A worker must not close a valve on a discharge line of a positive displacement pump while the pump is in operation. AR 191/2021 s776;242/2022;202/2024 ## Controlling pressure hazards 776.1 (1) An employer must ensure that a piping system is - (a) designed, installed and maintained to withstand the maximum anticipated pressures, - (b) tested when it is initially installed and after any modifications to it to verify that it can withstand the maximum anticipated pressures, and - (c) operated within maximum pressures referred to in clause (a). ## 776.1 (2) An employer must ensure that - (a) any hazardous energy that may be released from pressurized equipment is directed away from workers, or - (b) there is shielding, restraints or other controls in place to protect workers. 776.1 (3) If pressure in a piping system at the work site may exceed 3000 kilopascals, an employer must ensure that - (a) the piping system connections are welded, flanged or have hammer unions, or - (b) if the only connection on the wellhead is a threaded connection that is integral to the wellhead, the component parts of that threaded connection are compatible with each other. 776…
[2] Occupational Health and Safety Regulations, 2020 (Sask. Reg. 10/2020)
Page 225
Open source documentSource excerpt
## OCCUPATIONAL HEALTH AND SAFETY, 2020 - (c) the tank truck is located on the far side of the rig tank from the wellbore and at a distance of not less than 6 metres from the rig tank during loading and unloading; - (d) carbon dioxide suction lines are secured to the supply vehicle and pumping unit; and - (e) adequate warning signs prohibiting the presence of workers are positioned along the discharge pipelines before pressurization begins. - (2) Before fluids are unloaded into a wellhead, an employer, contractor or owner shall ensure that the lines between the pump and the wellhead are: - (a) designed and constructed to sustain the maximum anticipated pressure during service; and - (b) hydraulically pressure tested at a pressure that is not less than 10% above the maximum pressure anticipated during service. - (3) An employer, contractor or owner shall ensure that: - (a) swivel joints used with a hammer union are properly secured and of sufficient strength to withstand the stresses to which the joints may be subjected; - (b) oil savers are equipped with controls that can be readily operated from the rig floor; and - (c) a bleed-off valve is installed between a check valve and the wellhead. 31 Dec 2020 c S-15.1 Reg 10 s29-32. ## Well stimulation - 29-33 (1) During well stimulation or any similar operation, an employer, contractor or owner shall ensure that: - (a) if a working pressure of 2 000 kilopascals or more is applied to the piping system, equipment located between a pump or sand concentrator and the wellhead is controlled remotely from a location outside the potential danger area; - (b) subject to subsection (2), no worker is required or permitted to enter the potential danger area while the system is pressurized; - (c) if liquid carbon dioxide or liquid nitrogen is being used, the pumping unit is designed and positioned so that the valve controls can be operated from the low pressure side of the system; - (d) a check valve…
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