1. Big Sky Carbon Safety Illustrations
Guy Line Safety
This is a very important safety feature. Guy lines securing and stabilizing the workover rig must be
adequately marked for visibility to prevent vehicles from running into them. The cones are an additional
reminder and mark the safest distance a vehicle may approach the guy lines.
Additionally, spotters must be used when backing vehicles on location due to limited visibility.

2. Big Sky Carbon Safety Illustrations
Parking
Parking is designated on the fringes of the work site to keep everything neat and orderly. It is important to
smooth operations to have all vehicles parked out of the way of the driveway areas to allow unrestricted
access by service companies to the well site.

3. Big Sky Carbon Safety Illustrations
Safety Drills
An H2S safety drill gives the floor hand confidence in his ability to perform in an actual emergency. The day
following this drill an actual H2S release prompted to crew to mask up and perform. The crew performed
well and operations proceeded with out incident. Shown here is the rig crew from General Well Service rig
5 with Company Man Tom White.

4. Big Sky Carbon Safety Illustrations
Electrical Grounding
Adequate grounding of all electrical equipment is an OSHA requirement.

5. Big Sky Carbon Safety Illustrations
Flare Stack
Standing 60’ high, the flare stack disburses gasses away from the work area. A strong pilot light is used to
keep hydrocarbon gas burning. With the CO2 produced in the Danielson 33-17 CO2 supply well, the pilot
light was actually quenched.

6. Big Sky Carbon Safety Illustrations
Basic H2S Training
Annual H2S training is required of all personnel working around a sour gas well. Training includes being
fitted with SCBA, or Self Contained Breathing Apparatus. During the Danielson 33-17 completion operation
seventeen personnel received training.

7. Big Sky Carbon Safety Illustrations
Knowledgeable and Experienced Rig Crew
A good crew is essential for safe efficient operations. With the majority of oilfield accidents involving
employees with less than six months experience, longevity at a job is a plus. All workers on site have Stop
Work Authority to stop any operation they deem unsafe.

8. Big Sky Carbon Safety Illustrations
Blow Out Preventers
The orange Blow Out Preventers or BOP’s, shown here are essential to controlling pressure. The upper pipe
rams closes around the o.d. of the tubing providing a pressure seal of the annular area.

9. Big Sky Carbon Safety Illustrations
Limited Access
Access to the site is limited to essential personnel only. Not shown is a Warning Flag with banner. A yellow
or red flag warns of the potential for or the presence of Sour Gas, respectively.

10. Big Sky Carbon Safety Illustrations
Wind Socks
Wind socks can be seen in facilities and job sites around the world. Rally upwind in the event of a sour gas
release. Wind socks not only tell wind direction but also give an idea of wing speed. A windsock will be fully
inflated and held horizontal with a 17 mph breeze.

11. Big Sky Carbon Safety Illustrations
Harness
Harnesses must be worn when working at any height over 4’. You’ll hear no complaints from Justin McLean,
derrick man for General Well Service rig 5.