Task Procedure Analysis Worksheet
Task: Maintenance Hole Inspection
Page 1
SOP Number: 6
Effective Date: 05/20/2010
Trainer/Analyst: Ernie Garcia
Cancels Sheet Dated: __/__/____
Approved by: John Langill
Task: Maintenance Hole Inspection
Inspect maintenance holes (MH) during annual sewer system cleaning.
Performance Standard:
•
•
Conduct routine MH inspections
Identify and remove debris and buildup
Safety & Other Cautions: (List all safety
measures, safety equipment, issues,
cautions and other related precautions that
apply to this task)
Traffic Control Equipment
•
Safety vest, hardhat, gloves, earplugs,
cones, traffic signs, arrow boards, and
warning devices.
Tools & Equipment Needed: (List all
tools, personnel, and equipment necessary
to perform this task)
Master Street Listing Book, Thomas Guide
map book, maps of all three service areas
or computer with GIS, emergency contact
list, radio, communication tools, flash light,
maintenance hole pick/popper/puller,
sledge hammer, strobes, high level warning
device, flags, “slow/ stop” signs, gas
detector, and empty 5-gallon buckets.
J:\OPERATIONS\CMMS Documents\SOP's\Sewer SOP's\SOP 06 MH Inspection 05-20-2010
Task Procedure Analysis Worksheet
Task: Maintenance Hole Inspection
SOP Number: 6
Trainer/Analyst: Ernie Garcia
Page 2
Effective Date: 05/20/2010
Cancels Sheet Dated: __/__/____
Approved by: John Langill
Sequential Steps in Performing the Task/Procedure
1
2
•
Maintenance hole inspections shall be conducted during the annual sewer
system cleaning. The inspection requires a 2-person crew.
•
Complete Jetter vehicle checklist (see High Pressure Flush Truck SOP or
Vacuum Truck SOP).
•
Complete required paperwork and verify that you have all equipment necessary
to complete your job assignments for the location(s) and cleaning tasks
scheduled. Review maps for lane size and traffic patterns to ensure you have
necessary traffic control equipment. Discuss need for Supervisor to submit
traffic control requirements for City of Dana Point (only), for heavy traffic
roads.
•
Verify maintenance hole number and location, and pipe length.
•
Set up traffic control for maintenance hole location and align truck with hose
real for cleaning (see High Pressure Flush Truck SOP or Combination Truck
(Vac Con) SOP).
•
Set 4-gas monitor on top of maintenance hole to check structure for hazards
prior to removing maintenance hole cover.
•
Inspect maintenance hole for roots, infiltration, cracking, deterioration, insects,
broken rungs, broken cover, debris, grease, sticks, or any other obstructions that
could cause a backup in the downstream pipe.
•
Remove any debris and break up grease with spade or grease knocker prior to
cleaning pipe.
•
Complete sewer system cleaning.
•
Once cleaning procedure is complete, apply a small patch of tar (maintenance
hole cover sealer) to maintenance hole ring to prevent rocking or rattling and
replace maintenance hole cover.
3
4
5
6
7
8
9
10
J:\OPERATIONS\CMMS Documents\SOP's\Sewer SOP's\SOP 06 MH Inspection 05-20-2010
Task Procedure Analysis Worksheet
Task: Maintenance Hole Inspection
SOP Number: 6
Trainer/Analyst: Ernie Garcia
Page 3
Effective Date: 05/20/2010
Cancels Sheet Dated: __/__/____
Approved by: John Langill
11
12
•
If traffic control requires adjustment for the next setup, pick up the cones and
reset the taper.
•
Complete a Maintenance Hole Inspection Report noting any visible
condition(s). If structure needs immediate attention, notify Supervisor that the
maintenance hole needs rehabilitation.
J:\OPERATIONS\CMMS Documents\SOP's\Sewer SOP's\SOP 06 MH Inspection 05-20-2010