NGWA GENERAL DRILLING FINAL PAPER 2025/2026
QUESTIONS WITH SOLUTIONS GRADED A+
✔✔Problems with older wells - ✔✔YEILD REDUCTION, PLUGGING OF FORMATION,
SAND PUMPING
✔✔Reduction in Well Yield caused by - ✔✔IMPROPER DEVELOPMENT, IMPROPER
CONSTRUCTION, IMPROPER SCREEN DESIGN, INCRUSTATION
✔✔Aquifer Development - ✔✔CAN INCREASE WELL YEILD
✔✔Redevelopment of existing wells - ✔✔CAN BRING BACK 95% OF THEIR
ORIGINAL CAPACITY (FRACK/POUNDER WITH SURGE BLOCK)
✔✔Vacuum Occurs - ✔✔in wells when not PROPERLY VENTED
✔✔Confined Space - ✔✔A space NOT DESIGNED FOR CONTINUOUS HUMAN
OCCUPANCY,
LIMITED MEANS OF ENTRY OR EXIT,
LARGE ENOUGH TO PERFORM WORK
✔✔Confined space examples - ✔✔vaults, tanks, crawl spaces, diked areas, trenches,
enclosed rooms, manholes, ducts, ect.
✔✔Electrocution - ✔✔Consider all electric lines to be alive and dangerous,
NATION RECOMMENDED CLEARANCE IS 20 FEET
(hop two feet together or shuffle to get away)
✔✔Excavations - ✔✔Osha requirements are for excavation and trenches 4 feet or more
in depth
Most Deaths occur in trenches 4-14feet deep
✔✔Blocking - ✔✔Provides more even weight distribution
✔✔Electrical Safety - ✔✔LOCKOUT/ TAGOUT PROCEDURE
CONNECT GROUNDING WIRE TO CASING
GROUND ALL SUBMERSIBLE PUMPS
✔✔Ropes & Hoist Safety - ✔✔All ropes, cables, hoists, clutches, brakes should be
inspected before each use.
Lubricate to manufactures recommendation,
Match ropes and cables to appropriate sheave,
Know safe working loads
Avoid overloading, kinking, jerking, sudden stops or swing
QUESTIONS WITH SOLUTIONS GRADED A+
✔✔Problems with older wells - ✔✔YEILD REDUCTION, PLUGGING OF FORMATION,
SAND PUMPING
✔✔Reduction in Well Yield caused by - ✔✔IMPROPER DEVELOPMENT, IMPROPER
CONSTRUCTION, IMPROPER SCREEN DESIGN, INCRUSTATION
✔✔Aquifer Development - ✔✔CAN INCREASE WELL YEILD
✔✔Redevelopment of existing wells - ✔✔CAN BRING BACK 95% OF THEIR
ORIGINAL CAPACITY (FRACK/POUNDER WITH SURGE BLOCK)
✔✔Vacuum Occurs - ✔✔in wells when not PROPERLY VENTED
✔✔Confined Space - ✔✔A space NOT DESIGNED FOR CONTINUOUS HUMAN
OCCUPANCY,
LIMITED MEANS OF ENTRY OR EXIT,
LARGE ENOUGH TO PERFORM WORK
✔✔Confined space examples - ✔✔vaults, tanks, crawl spaces, diked areas, trenches,
enclosed rooms, manholes, ducts, ect.
✔✔Electrocution - ✔✔Consider all electric lines to be alive and dangerous,
NATION RECOMMENDED CLEARANCE IS 20 FEET
(hop two feet together or shuffle to get away)
✔✔Excavations - ✔✔Osha requirements are for excavation and trenches 4 feet or more
in depth
Most Deaths occur in trenches 4-14feet deep
✔✔Blocking - ✔✔Provides more even weight distribution
✔✔Electrical Safety - ✔✔LOCKOUT/ TAGOUT PROCEDURE
CONNECT GROUNDING WIRE TO CASING
GROUND ALL SUBMERSIBLE PUMPS
✔✔Ropes & Hoist Safety - ✔✔All ropes, cables, hoists, clutches, brakes should be
inspected before each use.
Lubricate to manufactures recommendation,
Match ropes and cables to appropriate sheave,
Know safe working loads
Avoid overloading, kinking, jerking, sudden stops or swing
