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Mast / Derrick Inspection (Bi-Weekly)

Drilling Equipment Inspections

How often
2 times per month. PM Plan derrick intervals (working days): Category I daily, II weekly, III annual, IV every 10 years.
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Inspection Frequency: 2 times per month); Nordic PM Plan 9.0 (Derrick Inspections are conducted two times per month) and Table 1; API RP 4G
📋 Inspection Information
📏 Readings
✅ Checklist

Answer every line. N/A means it does not apply today. Every Fail needs a note saying what is wrong.

Before climbing
Man rider / derrick work permit open
Source: Nordic R4 Manrider Winch 3.0
Fall protection inspected before use
Source: OSHA 29 CFR 1910.140(c)(18); Nordic R4 Manrider Winch 5.0 step 2
Drawworks park brake set and locked out at the console; "Man on Crown" sign on the console; floor barricaded
Source: Nordic R4 Greasing Crown 5.0 steps 1 to 3; API RP 54 (4th ed.) 7.6.5
Tools on lanyards before going up
Source: Nordic R4 Greasing Crown 2.0 and 5.0 step 3; API RP 54 (4th ed.) 7.1.13(a)
Windwalls
Windwall panels: no cracks, damage or looseness; fastener pins in place, all with safety clips
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Windwalls 1)
Lights in good condition; safety cables from light frame to windwall frame
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Windwalls 2)
Nordic and operator signs mounted securely; mount pins and safety clips in; bracket welds free of cracks
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Windwalls 3)
Crown block
Holding-down arrangement on the crown assembly and fastline sheave
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Crown Block 1)
Sheave line guards secure
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Crown Block 2)
Excess tar removed from the sheave clusters
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Crown Block 3)
Snatch block shackle securing devices in place
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Crown Block 4)
Sheave bearing lock-down nuts tight; sheaves secure with no cross play
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Crown Block 5)
Crown sheave wire line grooves checked with a sheave gauge
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Crown Block 6)
Crown and water table platforms secure and clear of loose items
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Crown Block 7)
Grating, handrails and toe boards secure and undamaged
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Crown Block 8)
Crown light fixtures secure
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Crown Block 9)
Crown bumper blocks secured against falling
Source: API RP 54 (4th ed.) 7.1.14
Derrick structure, crown to monkey board
Ladder fastenings to the derrick; rungs undamaged
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Derrick Structure 1); API RP 54 (4th ed.) 7.2.2
Structure connection pins installed with safety clip retainers
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Derrick Structure 2)
Derrick light fixtures: fasteners and safety cables
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Derrick Structure 3)
Top drive track bolt flanges, turnbuckle pins and safety clips secure
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Derrick Structure 4)
Board windwall fasteners and slide rails undamaged
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Derrick Structure 5)
Monkey board and board windwall
Derrickman's belt, lanyard and fall protection device in good condition
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Monkey board 1)
Loose items removed or secured on platforms, walkways and the derrickman's cabin
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Monkey board 2)
Safety chains on the pipe rack fingers
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Monkey board 3); API RP 54 (4th ed.) 7.2.14
Pipe rack fingers straight
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Monkey board 4)
Handrails undamaged
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Monkey board 5)
Safety cables from the board to the derrick A-leg installed and in good condition
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Monkey board 6)
Board connection pins installed with safety clip retainers
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Monkey board 7)
Board windwall panels: no cracks, damage or looseness; fasteners in place
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Monkey board Wind wall 1)
Derrickman's escape door undamaged; hinges free
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Monkey board Wind wall 2)
Geronimo escape buggy: no defects
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Monkey board Wind wall 3)
Windwall raising and lowering track free of defects
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Monkey board Wind wall 4)
Derrick structure, monkey board to rig floor
Ladder fastenings and steps undamaged
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Derrick Structure, board to floor 1)
Structure connection pins installed with safety clip retainers
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Derrick Structure, board to floor 2)
Derrick light fixtures: fasteners and safety cables
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Derrick Structure, board to floor 3)
Top drive track bolt flanges, turnbuckles, pins and safety clips secure
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Derrick Structure, board to floor 4)
Tong counterweight frame fasteners
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Derrick Structure, board to floor 5); API RP 54 (4th ed.) 7.1.15
Belly board
Handrails undamaged
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Belly Board 1)
Safety cables from the board to the derrick A-leg installed and in good condition
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Belly Board 2)
Connection pins installed with safety clip retainers
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Belly Board 3)
Traveling block and top drive
Block side plate fasteners secure; lock bolt installed
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Travelling Block 1)
Wire line sheave guards intact and installed
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Travelling Block 2); API RP 54 (4th ed.) 7.6.4
Sheave grooves checked for wear; bar used to check sheave play for bearing wear
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Travelling Block 3)
Hydra-hook connecting pins; no oil leak at the hook
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Travelling Block 4)
Bail ears: no excess wear; locking device installed; pins good
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Travelling Block 5)
Top drive adapter plate, pins, lock nuts and keepers
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Travelling Block 6)
Locking slide on the track shimmed correctly
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Travelling Block 7; Top Drive 1)
Service loop safety chains and clamps
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Top Drive 2)
Hydraulic hose loop: no leaks, frays, kinks or damage
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Top Drive 3)
Track straight
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Top Drive 4)
Electrical cord, strain reliefs and connections
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Top Drive 6)
Rotary hose and handling equipment
Rotary hose clamps and safety cables
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Rotary Hoses 1); API RP 54 (4th ed.) 7.6.6
Rotary hose unions and connections
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Rotary Hoses 2)
Rotary hose lifting clamp secure
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Rotary Hoses 3)
Rotary hose: no damage
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Rotary Hoses 4)
Fasteners, slings and shackles on the 350-ton Varco elevators, 216 in. elevator bales, iron roughneck lift arm, rotary slips, power slips and rotary tongs
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Handling Equipment 1a to 1f)
Iron roughneck spinner fasteners secure and lock-wired or safety-pinned
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Handling Equipment 2)
Manual elevators: link block bolts, underside retaining bolts, latch spring and latch spring nut
Source: Nordic R4 Mast/Derrick Bi-Weekly Inspection (Handling Equipment 3a to 3d)
After coming down
All tools brought down; nothing left aloft
Source: Nordic R4 Greasing Crown 5.0 step 6; API RP 54 (4th ed.) 7.1.13(a)(3)
Lockout closed out, "Man on Crown" sign removed, permit closed
Source: Nordic R4 Greasing Crown 5.0 step 6; Nordic R4 Manrider Winch 5.0 step 6
Findings have a plan to fix them; Tool Pusher and Tour Pusher sign the Nordic form
Source: Nordic R4 Rig Start-Up 22.0 step 4; Nordic R4 Mast/Derrick Bi-Weekly Inspection (sign-off lines)
📝 Findings & Actions
AnthroSafe™ Field Driven Safety
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