Skip Navigation

Course 904 - Oil and Gas Well Inspection

1    2    3    4    5      6      7      8      9      10      11      Course Homepage     Final Exam      Contact Instructor     Website Homepage
Safety guides and audits to make your job as a safety professional easier
dog house

Stairways and Walkways

Stairways and Landings

It’s important to conduct this inspection to ensure that stairways around the rig are of the proper size and configuration required to provide safe access for employees. For more information see: 29CFR1910.23-24 and OSHA Stairways and Ladders Guide (publication 3124).

Location

List all stairways and landings on the rig to facilitate thorough and accurate inspections and maintenance. Note any problems in the comments section.

Stairways and Landings (Continued)

stairs

Angle

Check that stairways are at least 30 degrees but not more than 50 degrees. Stair treads should be level in all directions.

Handrails

Check that handrails are installed on stairs rising more than 4 treads and are between 30 and 34 inches high measured from the top of the tread to the top of the rail at 90 degrees from the tread surface (straight up). Check that the rails are straight and smooth and are attached securely so they cannot be lifted out and dropped during use.

Where the rail is next to a wall, there should be 3 inches clearance between the rail and any obstruction. Check that all rails have an intermediate rail halfway between the stair tread line and the top rail. All rails should be capable of withstanding a 200-pound load from the top rail in any direction. For guard rails or “bumper” rails on equipment slides, check that they have an additional hand rail inside and are protected from load handling activities that may present a crush injury to personnel using the stairs.

Stairways and Landings (Continued)

stairs

Support Structure

Check that the support structure for the stairs is installed properly with all pins, bolts, and keepers in place. The structure should be solid and level with no large movements during use. Inspect any lifting eyes or fork pockets for damage and note for repair.

Landings

Check that bottom stair landings are a solid level surface with any drainage ditches routed away from landing areas. If pallets are used for stair landings, check that they do not have gaps larger than 1 inch between the boards. If necessary, the pallet should be covered with solid plywood to prevent trips caused by gaps in the landing surface. Inspect areas where doors or gates open directly onto a stairway. The landing must allow an effective width of at least 20 inches when the door swings open. Check that hand rails around landings are 42 inches high and withstand the 200 pound load test.

Make sure that active hand rails that are part of a stairway/landing system are not used for the storage of tools or equipment. If people can pass underneath the landing, a 4 inch toe board should be along the edge of the landing.

Stair Treads

Check that treads are evenly spaced, consistent throughout the run, clean and have a good non-skid lip. Also check that they are not bent or worn out and are unobstructed by tools or equipment.

Handrails and Guardrails

stairs

Conduct this inspection to ensure that rails around the rig are of the proper size and configuration required to provide safe work space for employees. For more information see: 29CFR1910.23 and OSHA Stairways and Ladders Guide (publication 3124)

Location

List all handrails and guardrails on the rig to facilitate thorough and accurate inspections and maintenance. Handrails are intended to protect workers along walkways and landings. Handrails should be installed on any change in elevation that exceeds 30 inches. Handrails on stairs are included in Form 16. In this document, guardrails are intended to protect areas from work activities and are designed to take impact that exceeds the specifications for handrails.

For each location, check the condition of the rail in terms of proper height, mounting, toe board (kick plate), load rating and collision potential. Note any problems in the comments section.

Handrails and Guardrails (Continued)

guardrails

Handrails

Measure the height of the handrail. The standard height for handrails is 42 inches measured from the floor to the top of the rail. Check that each rail is straight, smooth and securely attached. Where the rail is exposed to lifting activities, check that it is safety bolted into the pockets to prevent them from being lifted out and dropped. Confirm that all rails have an intermediate rail halfway between the floor line and the top rail and that they have a toe board at least 4 inches tall to prevent tools from being kicked off the edge.

All rails should be capable of withstanding 200 pounds of force from the top rail in any direction.

guardrails

Guardrails

Check that the guardrail is securely attached to the main structure of the rig and, if used for pulling or snubbing, it has a load rating marked to indicate the safe operating limit. Check that guardrails designed to protect the driller’s or operator’s console are configured to protect the operator from broken chains, cables, or loose equipment from the floor.

grating

Gratings and Walkways

This inspection helps to ensure walking and working surfaces around the rig are of the proper size and configuration required to provide safe work space for employees. For more information see: 29CFR1910.23

List all gratings and walkways on the rig and identify their purpose. Inspect each grating and walkway for proper attachment, condition, and load rating.

Gratings

Attachment

Gratings are used as machine or mud pit guards as well as a walking surface. Check that they are secured and do not move when employees walk or step on them. Check that hinged gratings are equipped with a pop-up handle that does not present a trip hazard and that the grating has some way to hold it open to prevent crush injuries from a falling grating hatch.

Gratings covering belt drives, conveyors, or moving machinery must be bolted down securely and identified as needing a lockout/tagout procedure if you need to remove the grating.

Condition

Look for corrosion or rust that may affect the load carrying capacity of the grating panel.

Load Rating

Clearly post the load rating in the area. Load bearing grating should not be bent or broken and should never be covered with boards or plywood intended to reinforce or repair damaged grating.

Walkways

walkways

Attachment

Check that walkways used to bridge between rig tanks or other rig components are securely attached at both ends to prevent movement following rig up. Walkways must be bolted or pinned in place with no large gaps in the walking surface. Check that sliding walkways have pin systems to hold them in place. Check that walkways installed above working areas also have a safety cable installed if the potential exists for it to be broken loose by hoisting equipment or other mechanical means.

Condition

Inspect all lifting eyes that are used to position the walkway. They should be in good repair. Also, make sure to lift the walkway level to facilitate installation. Look for corrosion and bent or otherwise damaged sections.

Load Rating

Walkways should never be modified to carry loads they were not designed for. Walkways that carry hoses, electrical cables, or piping systems in addition to foot traffic should be designed to provide a clear walking area and be rated for the loads it will carry.

Video

Instructions

Before beginning this quiz, we highly recommend you review the module material. This quiz is designed to allow you to self-check your comprehension of the module content, but only focuses on key concepts and ideas.

Read each question carefully. Select the best answer, even if more than one answer seems possible. When done, click on the "Get Quiz Answers" button. If you do not answer all the questions, you will receive an error message.

Good luck!

1. During your rig inspection, verify that stairways are at least _____degrees but not more than _____ degrees.

2. When inspecting stairs and handrails on the rig, make sure that all handrails are capable of withstanding a _____ load from the top rail in any direction.

3. When inspecting landings on a rig, verify that they allow an effective width of at least _____ inches when the door swings open.

4. When inspecting landings on a rig, check that hand rails around landings are _____ inches high.

5. When inspecting on the rig, make sure gratings covering belt drives, conveyors, or moving machinery are _____.


Have a great day!

Important! You will receive an "error" message unless all questions are answered.