8.0 Section G - Inspection Assesment.pdf

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Attached to
CSA 70 GH - Lytle Creek North Rotor Assembly & Scum Skimmer
Solicitation number
SPD126-SPDAD-6225
Issued by
San Bernardino County, California

About this file

Written by GovTribe AI ·

This is an inspection assessment checklist for the CSA 70 GH Lytle Creek North Rotor Assembly & Scum Skimmer project in San Bernardino, California (Project No. 30.30.0197). The document details the comprehensive inspection findings for two rotor assemblies (Rotor #3 and Rotor #4) located in Ditch #2. The inspection evaluates critical mechanical components including motors, gearboxes, rotors, tail bearings, and coupling systems. Both units are equipped with Desmi right-hand drive gearboxes and 60 HP motors. The assessment includes documentation of surface conditions, oil levels, seal integrity, bearing functionality, and paddle conditions. Test runs were conducted to monitor bearing temperatures and verify operational stability, with no abnormal vibrations noted during testing.

Rotor #3 demonstrates better overall condition despite two years of inactivity, with the Tnemec paint remaining intact and the grout pad in good condition; however, over one-third of the rotor blades require replacement, and drive anchors show rust and may need replacement. Rotor #4 exhibits more significant deterioration, with internal gearbox rust, compromised paint, a locked-up gearbox mechanism, approximately half of the paddle blades bent, and a leaking seal at the tail bearing bottom. Both units require immediate attention to the gearbox seals, oil level replenishment, anchor assessment, and paddle replacement. The inspection checklist includes provisions for photographic documentation and detailed notes on corrosion, hardware torque verification per specifications (5/8-11" stainless steel at 92 foot-pounds), and functional testing protocols.

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SECTION G

INSPECTION ASSESSMENT

CSA 70 GH LYTLE CREEK

NORTH ROTOR ASSEMBLY &

SCUM SKIMMER

FOR

SAN BERNARDINO, CALIFORNIA

PROJECT NO.: 30.30.0197

Rev 2

Inspection / Install Checklist

COMPANY INFORMATION

Ditch # 2

Rotor # 3

Deck Plate width 54 1/2 outside

Ditch Opening 52 inside

INSPECTION / INSTALL CHECKLIST NOTES

Motor

Motor HP? (take photos of motor tag) 60hp

Note any abnormal noise: Motor was missing

TAKE PICTURE

Gearbox

Drive Type (Desmi or Nord) Right or Left Hand? Desmi - Right Hand

Note any abnormal noise: Not Running

Note surface condition: Heavy Corrosion

Inspect output seal for leaking below output shaft Leaking

Verify that the mechanical output Sealing Disc rotates with the shaft (Desmi Drive Only)

Not Rotating

Note oil level: 3-4 Gallons Low

Note oil color: Dark, Carmel

Remove grease cartridge/ visually inspect condition of spider

(Nord Drive Only) x

Scope input pinion with camera See Photos o Note condition of gear teeth input pinion There was Spalling on the first tooth

Verify Breather is Installed and working Yes

Verify oil pump is working (Desmi Drive only) Yes

Condition of Grout Pad Grout Pad looked to be in good condition. Not sure how it looks under the gear drive

Conditions of drive anchors (are they reusable?) The anchors look rusted and might need to be replaced

Inspect ion cover is resealed , bo lts retorqued, breather p ipe reattached x

TAKE PICTURE x

Coupling

Note surface condition: Rusted and paint is compromised

Check coupling hardware torque (5/8-11”S.S. 92Ft/Lbs) : The Hardware torque was good

Verify there is no separation between coupling and rotor No separation

TAKE PICTURE

Rotor Rotor has been off for 2 years ( Life expectancy is 15 years )

Note surface condition: The Tnemec paint looks to be holding up

Note condition of paddles: Over 1/3 of the rotor blades are bent and need to be replaced o Are any paddles missing? NO

Tail bearing Has not ran for 2 years

Note any abnormal noise: Not running

Note surface condition: Rusted and paint is compromised

Note oil level: Low

Note oil color: N/A ( too low to check)

Check coupling hardware torque: The Hardware torque was good

Verify there is no separation between tail bearing and rotor N/A separation

Condition of Grout Pad Appears to be in good condition

Conditions of drive anchors (are they reusable?) Looks to be reusable

TAKE PICTURE

Test Run / Running Temps

Remove Lock Out, Tag Out X

Note any abnormal noise: (Gearbox, Tail bearing, Motor) No

Monitor and recorded bearing Temps till raise and plain out o Motor x o Gearbox x o Tail bearing x

Note any abnormal vibration: No

Desmi Gear Drive Coupling

End Bearing

Inspection / Install Checklist

COMPANY INFORMATION

Ditch # 2

Rotor # 4

Deck Plate width 55

Ditch Opening 52 inside

INSPECTION / INSTALL CHECKLIST NOTES

Motor

Motor HP? (take photos of motor tag) Not working

Note any abnormal noise: n/a

TAKE PICTURE

Gearbox Inside of gear box is rusted

Drive Type (Desmi or Nord) Right or Left Hand? Desmi - Right Hand

Note any abnormal noise: Not working / locked up

Note surface condition: Bad paint / rusted / Corrosion

Inspect output seal for leaking below output shaft Leaking

Verify that the mechanical output Sealing Disc rotates with the shaft (Desmi Drive Only)

Locked up

Note oil level: Low 7 gals

Note oil color: Oil too low to evaluate color

Remove grease cartridge/ visually inspect condition of spider

(Nord Drive Only) x

Scope input pinion with camera See Photos o Note condition of gear teeth input pinion No Spalling / gears rusted in gear box

Verify Breather is Installed and working Yes

Verify oil pump is working (Desmi Drive only) Gear box not running couldn’t verify

Condition of Grout Pad Looked good from what could be seen

Conditions of drive anchors (are they reusable?) Looked too from what could be seen

Inspect ion cover is resealed , bo lts retorqued, breather p ipe reattached

X

TAKE PICTURE X

Coupling

Note surface condition: Sitting 2 years not turning

Check coupling hardware torque (5/8-11”S.S. 92Ft/Lbs) : Tight

Verify there is no separation between coupling and rotor None

TAKE PICTURE

Rotor

Note surface condition: Rust and peeling paint

Note condition of paddles: 1/2 of paddles are bent o Are any paddles missing? No

Tail bearing

Note any abnormal noise: Not working

Note surface condition: Paint compromised / showing rust

Note oil level: Low

Note oil color: Too low

Check coupling hardware torque: Rusted but tight

Verify there is no separation between tail bearing and rotor Seal at bottom looks to be leaking

Condition of Grout Pad Appears to be in good condition

Conditions of drive anchors (are they reusable?) Looks to be reusable

Test Run / Running Temps

Remove Lock Out, Tag Out X

Note any abnormal noise: (Gearbox, Tail bearing, Motor) No

Monitor and recorded bearing Temps till raise and plain out o Motor x o Gearbox x o Tail bearing x

Note any abnormal vibration: No

Desmi Gear Drive Coupling

End Bearing

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