Skip to content
Sand Dredge Operator (Spider No.1)

Sand Dredge Operator (Spider No.1)
1. Start of Shift Activities 2. Pre-Shift/Pre-op Dredge
1. 1. Start of Shift Activities
clock in
enter code
scan fingerprint
obtain PPE Priority 3
hard hat
life jacket
safety goggles
work boots
work gloves
hearing protection
flashlight (during hours of darkness)
Attend Pre-shift Meeting with plant manager Priority 2
Discuss today's production agenda Priority 2
Location of dredge Priority 2
Discuss safety issues Priority 3
Discuss maintenance issues Priority 2
Discuss problems Priority 2
Make contact with previous operator (if possible) Priority 2
Travel to dock area
Put on life jacket and hard hat Priority 3
Check walkway and dock area
ensure walkway/dock area is secure
dock should not be floating away
dock should be anchored
ground under walkway should not be washed away
check handrails Priority 2
check safety chains Priority 2
check for tripping hazards Priority 2
verify power is on to the dredge
check transformer
look for light on dredge
Board the boat
no smoking on the boat
use 3-point contact Priority 2
pump off rain water
check fuel
check dock lines
ensure oar/paddle is on boat
check fire extinguisher Priority 2
When using small boat, obtain fire extinguisher from locker and place on boat Priority 2
Travel to the dredge
start the outboard
untie dock lines
watch for any obstructions in water Priority 2
logs, loose pipe, debris, etc.
Never pass over power cable Priority 3
Electrical shock hazard
Note location and condition of pipe line
kinks
holes
leaks
floats
Note location and condition of power cable Priority 3
floats
continuous pvc pipe
floating balls
strain clamp on electric line at dredge
Note location of swing cables
Check cutter head from boat
Check for broken teeth
Check for missing teeth
Check for wear to teeth
worn teeth get shorter and shorter
Check for lodged debris
DO NOT POSITION YOURSELF UNDER THE CUTTER HEAD OR LADDER UNLESS THE SAFETY CHAINS HAVE BEEN INSTALLED
Check the rock guard from the boat
inspect for wear Priority 2
rock guard is located behind cutter hub in front of cutter tube protecting the cutter tube seal
Rock guard will appear tight against the hub. As it wears, the space between the hub and the rock guard will increase. When this distance becomes 1/16th of an inch, replace or re-shim.
check for debris Priority 2
fishing line
check cutter tube for oil leak at rock guard Priority 3
Check the gatlin plate and suction mouth piece for intactness, wear and obstructions Priority 2
Arrive at dredge
shut off outboard
tie off boat
tie off at bow and stern
position boat to accommodate safe access to dredge Priority 2
Board the dredge Priority 2
unhook chain Priority 2
use 3-point contact to board dredge Priority 2
re-hook chain Priority 2
Inspect between pontoons for oil film on water
2. 2. Pre-Shift/Pre-op Dredge
Begin on starboard side
Check for slip/trip hazards Priority 3
Check all handrails Priority 2
loose cables
broken, bent uprights
openings are chained off
toe boards in place
Check service water pump and jet pump Priority 3
packing
suction
physical damage
U-bolts along the ladder
Check electrical room
Check for breakers thrown
Check for breakers locked out
Check for trips/faults
Benshaw starter
Siemens dc drive
Check air conditioning Priority 2
Check static oil tanks Priority 2
look at oil canisters mounted on ladder Priority 2
oil levels
color of oil
Check hydraulic room Priority 2
check for hydraulic leaks Priority 3
check hydraulic oil levels Priority 2
look for oil level between high and low marks
Use site glass
Add oil if needed
ISO 32 or ISO 45 as needed
check hydraulic oil temperature Priority 3
should be between 80 and 100 degrees F
Never start cutter pump if oil temperature is less than 80 degrees
If less than 80 degrees, start winch pump and put the system into oil heat mode Priority 3
check filter indicator Priority 2
should be in the green with unit not running
drain water from air compressor tank Priority 2
visually examine pump motors for damage, missing bolts
visually inspect hydraulic hose and valves Priority 2
Check stern winch
Check for leaks
Check wire rope for bird nesting Priority 2
Check winch mounting nuts/bolts
If loose, re-tighten or replace with Grade 5 or better nuts/bolts
Check fair leads Priority 2
inspect port side deck
Check all handrails Priority 2
loose cables
broken, bent uprights
openings are chained off
toe boards in place
Check for slip/trip hazards Priority 3
climb steps to ladder at bow of dredge Priority 2
Use 3-point contact Priority 2
travel down port side of ladder to cutter
Use 3-point contact Priority 3
check oil lines for leaks Priority 2
check water lines for leaks and bulges Priority 2
check swing cables for broken wires and flattening
check for missing/loose nuts/bolts
check suction pipe for physical damage, nuts/bolts in place
check port-side swing block for wear
check cutter gear for leaks, loose/missing bolts Priority 2
check cutter tubes for leaks, loose/missing bolts Priority 2
travel back up starboard side of ladder
Use 3-point contact Priority 3
check starboard swing block for wear
check starboard swing cable for broken wires, flattening
Check suction pipe for physical damage, nuts/bolts in place Priority 2
inspect bolts on maximizer (loose, missing) Priority 2
This is an area where the bolts come loose quite often
Check lift chains and lifting eyes on hoist block (upper and lower) Priority 3
check sheaves for wear Priority 2
check for loose pins/bent shackles Priority 2
Check ladder winch
Check for leaks
Check wire rope Priority 3
Check winch mounting nuts/bolts Priority 3
If loose, re-tighten or replace with Grade 5 or better nuts/bolts
Check shackle dead end of cable Priority 3
check pin tightness/beckett Priority 3
Ensure clean out lid is in place and tight on suction side of dredge pump Priority 2
examine vacuum sensors for physical damage
examine underwater pump Priority 3
check for missing nuts/bolts Priority 3
check for oil leaks Priority 3
shaft seals
hose
drain plug
check for holes in pump shell Priority 3
Check 90-degree elbow for wear/holes Priority 2
Check the spool piece behind the 90-degree elbow for wear/holes Priority 2
examine torque tubes Priority 2
Check shim packs Priority 2
Check taper locks Priority 2
Check paint wear Priority 2
Warning of potential failure
Check water leaks and cracks Priority 3
Check intermediate bearings and seals Priority 2
examine swing cable fair leads (port and starboard side) Priority 2
check for wear Priority 2
check for rotation Priority 2
Examine discharge pipe along the ladder Priority 2
Check for wear
Check for leaks Priority 2
Check for clamp bolts
Examine swing winches Priority 2
Check for leaks
Check wire rope for bird nesting Priority 2
Check winch mounting nuts/bolts
If loose, re-tighten or replace with Grade 5 or better nuts/bolts
Check Lufkin gear box Priority 2
Check for leaks Priority 2
Check coupling Priority 2
Check oil level Priority 2
oil should be visible in site glass
Should look like oil - not milk (milky color indicates water in oil)
Check mounting nuts/bolts Priority 2
Check manual temperature gage Priority 2
Check pressure gage Priority 2
should be at zero
Check wiring on electronic temperature gage Priority 2
Check dc drive motor Priority 2
check mounting nuts/bolts Priority 2
If loose, re-tighten or replace with Grade 5 or better nuts/bolts
check temperature
should be warm at all times to keep condensation from forming inside motor
check bolts in coupling between gear box and motor Priority 2
check for unusual odors (burnt smell) Priority 2
Check dc blower motor Priority 2
check mounting nuts/bolts
If loose, re-tighten or replace with Grade 5 or better nuts/bolts
Inspect trunion pins Priority 2
ensure they are greased
Check keeper bolt Priority 2
examine steps to operators cab Priority 3
Check for slip/trip hazards Priority 3
Examine operator's cab
Keep neat, clean, orderly
Check fire extinguisher
Complete pre-op report