Wyoming Administrative Code › Agency 053 - Workforce Services, Department of › Sub-Agency 0012 - OSHA - Oil & Gas Well Special Servicing › Chapter 7 - CONDUCTOR WIRELINE SERVICES › Section 7-4 - Perforating, Pipe Recovery and Other Operations Using Explosives

Current through July 13, 2024
(a) There shall be no restriction as to time
				of day or night that special services operations using explosives may be
				performed.
(b) Devices containing
				an explosive, such as a perforating gun, string shot and chemical cutter, shall
				be handled only by or under the direct supervision of a qualified employee.
				This does not apply to explosives in an approved Department of Transportation
				package.
(c) Explosive tools shall not be armed in advance of the services
				requiring their use except those tools which are permitted to be armed in
				advance by
49 CFR
				172.101, 173.53(u), or 173.80 or by
				exceptions to said 49 CFR references, 1982 edition.
(d) All explosive tools required to be armed
				on site shall be immediately disarmed upon retrieval from the well if the tool
				did not fire.
(e) Electrical
				grounding, or bonding as appropriate, between the wellhead, wireline service
				unit and rig structure shall be made before attaching a tool containing an
				explosive to the wireline conductor.
(f) All unnecessary personnel shall be kept
				away from the area of any tool containing explosives while the tool is being
				armed, placed in the well, or removed from the well and disarmed.
(g) If any tool removed from the well is
				suspected of having trapped pressure, this trapped pressure shall be relieved
				by a qualified person using procedures and/or devices appropriate to the
				operation. All unnecessary personnel shall be remote to the relieving
				operation.
(h) Radio transmitting
				units, except those that have been designed for use around detonators, shall
				not be operated within 200 feet of any perforating operation. Warning signs
				shall be posted requiring that all radio transmitting units will be shut off
				within 200 feet of perforating operations. Special detonators or circuits shall
				be required when certain radio transmitting units cannot be shut
				down.
(i) The signs required above
				shall be conspicuous, durable, legible, and shall clearly convey the required
				information.
(i) The perforating
				operation shall be suspended and the loaded gun safely isolated if an
				electrical storm is imminent in the job area.
(j) Only a galvanometer or safety meter
				designed for checking of detonators shall be used for such checks.
(k) All firing circuits shall have a means or
				method which will prevent the inadvertent activation of the electrical firing
				circuit.
(l) When checking cable
				continuity using wireline service unit electric current (AC or DC), prior to or
				during electrically actuated explosives operations, the cable head or end of
				the cable shall be visible to the employee applying the current.
(m) Before attaching a wireline to an
				explosive device, the conductor wire and armor shall be temporarily shorted to
				eliminate any electrical charge that may exist in the cable.
(n) Unattached detonators and boosters shall
				only be transported in an approved cap box. Only the detonator and booster for
				immediate use shall be removed from the cap box. The shunt on the detonator
				lead wires shall remain in place until the detonator is ready for
				use.
(o) When arming an explosive
				device with an electric detonator, the electrical connections must be made
				prior to attaching the detonator to the device.
(p) Upon completion of the perforating
				operation, the work area shall be inspected and all explosives shall be removed
				from the site by a qualified employee.