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Inspection and maintenance guide · OPW24/0125
HumeCeptor® system Inspection and maintenance guide Issue 2 [OCR of page images] a umes Strength. Performance. Passion. HumeCeptor® system Inspection and maintenance guide TANT
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Page 2
Purpose of this guide
This guide outlines the maintenance procedures and requirements for
HumeCeptor® units.
Where the contents of this guide differ from project Humes makes no representation or warranty, implied
specifications and drawings, supervisory personnel or otherwise that, amongst others, the content of this
should consult with a Humes engineer. In the event guide is free from errors or omissions or in relation
of any conflict between the information in this guide to the adequacy of the information contained in this
and local legislative requirements, the legislative guide and where appropriate you will seek verification
requirements will take precedence. from an independent third party before relying on
any information in this guide. Humes is not liable or
It is the responsibility of the site owner and its responsible to any person for any use or reliance of any
contractors to determine the site’s suitable access and information arising out of or in connection with this guide.
location for maintenance plant and equipment.
Nothing in this guide is to be construed as a
representation, endorsement, promise, guarantee or
warranty whether expressed or implied.
1 HumeCeptor® system
Page 3
HumeCeptor® system
Safety advice
The HumeCeptor® unit must be maintained in
accordance with all relevant health and safety
requirements, including the use of PPE and fall protection
where required.
Confined space entry
Maintenance of the HumeCeptor® should not require
entry, however, if entry into the unit is required, then the
device is deemed a confined space. As such, if entering
the unit, all equipment and training must comply to SHE
regulations. It is the responsibility of the contractor or
person/s entering the unit to proceed safely at all times.
Personal safety equipment
The contractor is responsible for the provision of
appropriate personal protection equipment including,
but not limited to safety boots, hard hat, reflective vest,
protective eyewear, gloves and fall protection equipment.
Make sure all equipment is used by trained and certified
personnel, and is checked for proper operation and safety
features prior to use.
Handling
The customer, or their contractor, is responsible for the
removal of access lids from the HumeCeptor® unit. The
customer or contractor should familiarise themselves
with the device and site constraints, and particular
attention should be given to safety hazards such as
overhead power lines and other services in the vicinity
when considering the position of plant and equipment.
HumeCeptor® system 2
Page 4
Maintenance overview Sediment settles to the bottom of the lower chamber
by gravity forces. The circular design of the treatment
To ensure ongoing long-term environmental protection chamber is critical to prevent turbulent eddy currents,
HumeCeptor® needs to be maintained (generally which inhibit the settling process.
annually).
During high flow conditions, stormwater in the by-pass
The actual on-going maintenance frequency chamber will overtop the weir and be conveyed to the
requirements will be determined through quarterly outlet drain directly. Water flowing over the weir creates
inspections undertaken during the first year. However, a backwater effect on the outlet decant pipe (ensuring
only an annual maintenance period is anticipated for head stabilization between the inlet drop pipe and outlet
most HumeCeptor® units installed within drainage decant pipe). This ensures that excessive flow will not be
infrastructure. forced through the treatment chamber scouring or re-
suspending previously settled material.
Inspection can be performed by anyone, and procedures
for inspection are provided in this document. The by-pass mechanism is an integral part of the
HumeCeptor®, since other oil/grit separator designs and
Generally, comprehensive maintenance is performed proprietary devices have been noted to scour during high
from the surface via vacuum truck. Companies capable flow conditions (Schueler and Shepp, 1993).
of performing this maintenance can be found in the
Yellow Pages or online by searching sewer cleaning or
Figure 1 – HumeCeptor® system operation during design
liquid waste removal. If you require a list of contacts for
flow conditions
cleaning your HumeCeptor® please call your nearest
Humes office.
HumeCeptor® operation
A HumeCeptor® unit can be divided into two distinct
zones comprising:
1. A lower treatment chamber
2. An upper by-pass chamber
Stormwater flows into the by-pass chamber via the
stormwater drainage-pipe, where low flows are diverted Figure 2 – HumeCeptor® system operation during high
into the treatment chamber by the weir and drop pipe flow conditions
arrangement.
Note, the treatment chamber is always full of water
so water will flow up through the outlet decant pipe
(based on the head of water behind the inlet weir) to be
discharged back into the by-pass chamber downstream of
the weir. The downstream section of the by-pass chamber
is connected to the outlet drainage pipe.
Oil and other liquids with a specific gravity less than
water rise in the treatment chamber and become trapped
since the inlet of outlet decant pipe is submerged.
3 HumeCeptor® system
Page 5
HumeCeptor® system
Model Identification Figure 3 – HumeCeptor® system variations
Even if you do not have the plans of your stormwater
drainage system, you will still be able to identify
the location of an in-line HumeCeptor® unit(s) as all
HumeCeptor® units have a 600 mm diameter cast iron
lid, clearly embossed with “HumeCeptor®”.
You will be also be able to identify an inlet HumeCeptor®
unit(s), by looking through the stormwater inlet grate
where the fibreglass insert will be visible.
STC 2 (inlet) MultiCeptor™
However once you have found the unit, you may still be
uncertain what model it is. Comparing the measured
depth from the water level (bottom of insert) to the base
of the tank with the dimensions listed in Table 1 below
will help to determine the size/model of the unit.
If there is still uncertainty regarding the size of the
HumeCeptor® using depth measurements, contact your
nearest Humes office for further advice.
There are a few variations on the standard models
described above. However, basic maintenance procedures AquaCeptor™
will be the same. The following figures display the
different types of HumeCeptor® units available. For
further details, please refer to the HumeCeptor® Technical
manual.
Table 1 – Depths from pipe invert to base
Model Pipe invert to base (m)
STC2 1.50
STC3 1.40
STC5 1.80
DuoCeptor™
STC7 2.70
STC9 2.40
STC14 3.40
STC18 3.10
STC23 3.70
STC27 3.50
HumeCeptor® MAX
HumeCeptor® system 4
Page 6
Inspection Procedure 4. To empty the Sludge Judge, touch the check valve pin
against a hard surface; this opens the check valve
HumeCeptor® units are generally sized such that they allowing the contents to drain out.
only require maintenance (cleaning out) on an annual
basis. This being said, it is difficult to know what Oil Sampling
the actual pollutant loading rate from the particular
A similar procedure for using the Sludge Judge applies for
catchment that the HumeCeptor® services might be
checking the oil level in the HumeCeptor®, except in this
(how much pollution enters the device in a given time
instance the device is used through the oil clean out port
frame). Therefore, the manufacturer recommends that
rather than the outlet riser.
the HumeCeptor® should be monitored on a 3 monthly
basis, which will assist in determining the actual need for 1. Lower the Sludge Judge into the oil clean out port
maintenance. of the HumeCeptor® to a depth of 1 to 1.5 meters
below the fibreglass insert.
The following procedure can be used to inspect the
HumeCeptor® and determine the levels of sediment and 2. When at the required depth tug slightly on the rope
hydrocarbons (oils) in the device. to set the check valve trapping the mixture inside.
1. Locate the HumeCeptor® - all units have a 600mm 3. When the Sludge Judge has been raised clear of the
diameter cast iron lid embossed with“HumeCeptor®” HumeCeptor®, the amount of oil in the device can be
2. Use the Gatic lifter to remove the lid read using the markers on the clear pipe section.
3. Conduct a visual inspection of the inlet and outlet
4. To empty the Sludge Judge, touch the check valve pin
pipes to ensure there are no blockages
against a hard surface; this opens the check valve
4. Conduct a visual inspection of the fibreglass insert
allowing the contents to drain out.
and check for damage; also check for obstructions in
the orifice
The depths of the sediment and hydrocarbons should
5. Identify the location of the oil clean out port and the
be recorded. The HumeCeptor® will require a clean out
outlet riser
when either the sediment or oil levels in the device reach
6. Use the Sludge Judge to determine the levels of
the depths outlined in Table 2 below.
sediment and hydrocarbons in the device
It should be noted that for an STC2 model HumeCeptor®,
The HumeCeptor® is designed to capture and retain a screw cap will need to be removed to access the Oil
sediments and hydrocarbons, therefore, two samples will Clean Out Port. Ensure that the cap is replaced when
need to be drawn from the device by using the Sludge work is completed.
Judge. The Sludge Judge is used in the following manner:
Sediment Sampling
Table 2 – Sediment depths indicating maintenance
1. Lower the Sludge Judge into the outlet riser of the
HumeCeptor® all the way to the base of the unit; the Model Max Oil Depth Max Sediment Depth
(mm) (mm)
float valve will open allowing materials to flow in. It
should be lowered in slowly and not plunged to the
STC2 350 200
bottom.
STC3 450 350
2. When at the bottom of the unit the clear pipe of
STC5 450 600
the Sludge Judge will be filled to the top of weir STC7 450 850
level with water (and sediment at the bottom). Tug STC9 850 600
slightly on the rope to set the check valve trapping STC14 1150 700
the mixture inside. STC18 1050 600
3. When the Sludge Judge has been raised clear of the STC23 1050 700
HumeCeptor®, the amount of sediment in the base STC27 1150 750
of the device can be read using the markers on the
clear pipe section.
5 HumeCeptor® system
Page 7
HumeCeptor® system
Maintenance Procedure It may be convenient on larger units to de-water some
of the relatively clean water from the central zone in the
Maintenance of HumeCeptor® is performed using treatment chamber. This will minimise maintenance
vacuum/eductor trucks this ensures that no requirement costs as disposal of essentially clean stormwater can
for entry into the unit is necessary for maintenance. be avoided. Often this can be done in either the sewer
The vacuum truck industry is a well-established sector of or upstream of the pipe (position sandbags to create
the waste management industry cleaning underground temporary storage). However, this should only be done
tanks, sewers and catch basins. with the appropriate authorities consent.
A HumeCeptor® unit is cleaned by adhering to the
following steps: Maintenance Cost
1. Complete a Job Hazard Analysis (JHA) and a Work The costs to clean out a HumeCeptor® will vary based
Method Statement (WMS) before undertaking the on the size of the unit, pollutant volume/type and
maintenance procedure. transportation distances.
2. Prepare the site around the HumeCeptor® for
cleaning. This involves establishing the job site Economies of scale will be achieved where there are
(traffic control if required), assembling cleaning multiple units for a given location. The time to clean the
HumeCeptor® is approximately 30 minutes to an hour,
equipment, positioning the vacuum truck and
excluding transportation and disposal.
ensuring correct equipment is available to use
(including PPE). Disposal costs will vary greatly depending on local
3. Remove the lid above the holding chamber and authority requirements, the type of contaminants
conduct a visual inspection to assess the condition washing off your site and the availability of waste
of the HumeCeptor® and note if there are any disposal facilities.
blockages or lodged debris
4. Check for oil using a dipstick, tube or sampling device It should be noted that these costs would be incurred
during the maintenance of any type or brand stormwater
via the oil sample port.
quality structure and not just the HumeCeptor®.
5. Remove and store any free oil separately using a
small portable pump via the oil sample port:
a. Be sure to skim from the top of the water to
ensure oil contaminants are removed
b. Approximately 300 mm of water should also be
removed from the top of the water column
c. The oil/fuel waste can be disposed of
separately, as this will incur a higher disposal cost
6. Remove the sludge/sediment from the bottom of the
HumeCeptor® using the vacuum truck:
a. The truck’s suction hose should be lowered into
the sump of the device via the outlet riser
b. While extracting the waste, move the hose
around in the opening to ensure that the hose
is sucking from various locations in the sump to
remove all the captured material
c. The extracted waste can usually be disposed of
as general waste at a waste transfer station
7. Clean the interior of the pit using water jet
8. Replace lid, ensuring it is firmly and securely in place
HumeCeptor® system 6
Page 8
Maintenance Frequency Although HumeCeptor® will continue to operate
effectively until sediment completely fills the
It is generally recommended that inspection of the unit treatment chamber. It is still deemed good practice
to be undertaken every three months for the first year of that maintenance should be performed “annually” or
operation. This schedule may then be relaxed after a year, “once the sediment depth exceeds the guideline values”
when confidence is gained regarding the actual pollutant provided in Table 2, whichever condition is achieved first.
load and run-off generated by the up-stream catchment.
A more frequent program may be required where there is HumeCeptor® units are often installed in areas where
greater risk of oil spills. the potential for hydrocarbon spillage is great. However
HumeCeptor® should be cleaned immediately after any
You may elect to undertake inspection yourself or major spill occurs, by a licensed liquid waste contractor.
choose to contract a waste management company to You should also notify the appropriate regulatory
obtain a complete inspection and maintenance package. agencies as required in the event of a spill.
Contact the nearest Humes office for recommendations/
information regarding companies, which have the
capabilities to provide an inspection and maintenance
Removal of Hazardous Material
service in your area.
The requirements for the disposal of material removed
from the HumeCeptor® are similar to that of any other
The need for maintenance can be determined easily by
stormwater treatment device. Local guidelines should be
inspecting the unit from the surface. The depth of oil in
consulted prior to disposal.
the interceptor can be determined by inserting a dipstick
in the oil sample port. Similarly, the depth of sediment
The sediment, once de-watered, may be suitable for
can be measured from the surface without entry into
disposal in a sanitary landfill. It is recommended to check
the HumeCeptor® via a clear tube (Sediment sampler) -
with the relevant authorities in your local area as some
sediment sampler tubes are available from Humes. The
local authorities may require testing of the sediment
sampler is inserted in the 610 mm opening in the “disc”
prior to disposal.
in-line models and through the 100 mm oil sample port
in the “inlet” models.
All petroleum waste-products, collected in the
HumeCeptor® (oil/chemical/fuel spills), should
As a general rule an annual maintenance schedule is
be removed and disposed of by a licensed waste
recommended. However maintenance requirement
management contractor.
frequency will vary with the volumes of stormwater
pollution generated by your site (number of spills,
amount of sediment, etc.). So while annual maintenance
is recommended, the frequency of maintenance may be
varied (increased or reduced) based on local conditions;
if the unit is filling up with sediment more quickly than
projected, maintenance may be required semi-annually;
conversely once the site has stabilised maintenance may
only be required every two or three years.
7 HumeCeptor® system
Page 9
Example Job Safety Analysis (JSA)/Work Method Statement (WMS)
The following JSA/WMS is a guide only. It is the responsibility of the cleaning contractor or asset owner to develop their own JSA/WMS in
line with their own WHS requirements and constraints. It also assumes that there will be no entry into the unit during maintenance.
Project/ Address: Date:
Job: Clean out of HumeCeptor® unit Operator:
Risk Level: 1 - Extreme 2 - High 3 - Medium 4 – Low 5 - Negligible
Consequence: Likely to cause very Clear potential for Similar to risk of driving Little likelihood of any Virtually Harmless
serious harm serious harm a car harm
Response: STOP THE JOB STOP and Reassess to Control and ensure Monitor to ensure risk Continue work
find better way controls work remains low
INITIAL PERSON END
PROCEDURE POSSIBLE HAZARDS CONTROLS
RISK RESPONSIBLE RISK
1. Preliminaries: Nil - Refer to relevant manuals Operator -
• Confirm unit locations and types
• Familiarise with the technical manual
2. Plan the Job: • Climbing in/out/around of truck 3 • Refer to safety plan on moving around Operator 4
• Room to access and work on the unit vehicles
without impacting other property or • All units have a high risk of 4 • Wear PPE and never reach into or lift 5
vehicles containing syringes accumulated matter with hands. If a needle
• Consider water flows and if excessive stick injury occurs, wash the affected area
note and move onto next job with soap and water and report the incident
• Condition and status of unit to the branch and seek medical attention
• Identify water fill point ASAP.
• Identify waste dump point
3.Establish Job Site: • Traffic 2 • Devise a relevant Traffic Management WMS Operator 5
• Over 60 km/hr will require traffic • Pedestrians • Ensure barriers and signs redirect
management • Overhead power lines pedestrians
• Within 6.4m of overhead power lines • Ensure spotter is present
will require spotter
4. Assemble Cleaning Equipment • Infection 3 • Personal hygiene (wash hands prior to Operator 5
• Position vacuum hose to remove debris • Sharp edges smoking/eating)
from the unit • Manual handling • Wear gloves & remove sharp edges/burrs on
• Falling equipment equipment
• High pressure water • Follow a manual handling WMS
• Store equipment securely on vehicle
• Inspect vacuum hose fittings firmly secured
• Inspect hose daily 7 ensure it has been
tested (6 monthly)
• Never cap jetting hose
• Inspect jetting hose for damage
• Never adjust pump pressures or regulators
• Maximum reducer on 1” hose is ¾”
• No reducers on ½” hose
• Fittings to be firmly secured using a spanner
5. Open the Cover • Manual Handling 3 • Refer to a SWP for manual handling Operator 5
• Remove lid using the manhole lifting • Open Manholes • Refer to a SWP for manhole lifting
procedure
• If lid is mass concrete and exceeds safe
lifting limits, use mechanical lifting
device
6. Start Cleaning • Manual handling 3 • Follow a SMP for manual handling Operator 5
• Check for oil using a dipstick, tube or • Eye injury from flying debris • Wear eye protection
sampling device • Noise • Wear hearing protection
• Remove and store any free oil separately • People inside exclusion zone • Stop operation until area clear. Only
using a small portable pump • Confined Space Entry (If essential personnel within exclusion zone
• If there is any requirement to enter the required) • Ensuring minimum slack in hose to prevent
pit for any reason, confined Space Entry whipping
Procedure is to be followed • Refer to confined space manuals and SWPs
• Decant the relatively clean water from
the central zone to either sewer or
upstream (approvals from authorities
required to discharge to sewer)
(OPTIONAL)
• Vacuum all material out of the sump
until empty clear
• Clean the interior of the pit using water
jet
7. Finish Cleaning • Manual handling 3 • Follow a SMP for manual handling Operator 5
• Replace lid ensuring it is fimly &
securely in place
• Ensure all waste is vacuumed and site is
clean prior to packing up
• Complete the CWS recording all details
and any problems
Page 10
HumeCeptor® unit maintenance record
Customer details
Company Phone
Contact name Email
Address Date
State Operator name
HumeCeptor® unit details
Model Type (circle one) Standard | Inlet | Multi | Aqua
Cleaning method (circle one) Vacuum | Eduction Duo | MAX
Layout details
Plan Elevation
Pollutant removal results
Estimated volume of water removed (L) Hydrocarbons(%)
Estimated volume of pollutants/oil (m )3
Vegetation (%)
Percentage of pollutant content (%) Sediments (%)
Percentage of pollutant capacity (%) Total volume (%) 100
Any evidence of gross pollutants (i.e. items larger than drink cans)? YES NO
Any evidence of sewage contamination? YES NO
Any evidence of any other unexpected contamination? YES NO
Describe unexpected contamination (if any):
Any problems cleaning the HumeCeptor® unit (describe briefly):
If problems were experienced were they thenresolved satisfactorily (describe briefly):
Page 11
Contact information
National sales 1300 361 601
humes.com.au
[email protected]
Head Office New South Wales South Australia
18 Little Cribb St Grafton Adelaide
Milton 4064 QLD Ph: (02) 6644 7666 Ph: (08) 8168 4544
Ph: (07) 3364 2800 Fax: (02) 6644 7313 Fax: (08) 8168 4549
Fax: (07) 3364 2963
Newcastle
Ph: (02) 4032 6800 Western Australia
Queensland Fax: (02) 4032 6822
Gnangara
Ipswich/Brisbane Sydney Ph: (08) 9302 8000
Ph: (07) 3814 9000 Ph: (02) 9832 5555 Fax: (08) 9309 1625
Fax: (07) 3814 9014 Fax: (02) 9625 5200
Perth
Rockhampton Tamworth Ph: (08) 9351 6999
Ph: (07) 4924 7900 Ph: (02) 6763 7300 Fax: (08) 9351 6977
Fax: (07) 4924 7901 Fax: (02) 6763 7301
Townsville Northern Territory
Ph: (07) 4758 6000 Victoria
Fax: (07) 4758 6001 Darwin
Echuca Ph: (08) 8984 1600
Ph: (03) 5480 2371 Fax: (08) 8984 1614
Fax: (03) 5482 3090
Melbourne
Ph: (03) 9360 3888
Fax: (03) 9360 3887
Page 12
National sales 1300 361 601 humes.com.au [email protected] A Division of Holcim Australia This brochure supersedes all previous literature on this subject. As the specifications and details contained in this publication may change please check with Humes Customer Service for confirmation of current issue. This document is provided for information only. Users are advised to make their own determination as to the suitability of this information or any Humes product for their own specific circumstances. We accept no responsibility for any loss or damage resulting from any person acting on this information. Humes is a registered business name of Holcim (Australia) Pty Ltd. HumeCeptor is a registered trademark of Holcim. “Strength. Performance. Passion.” is a trademark of Holcim. HumeCeptor is marketed, sold and manufactured by Humes under licence from Imbrium Systems Corp. © April 2017 Holcim (Australia) Pty Ltd ABN 87 099 732 297. All rights reserved. This guide or any part of it may not be reproduced without prior written consent of Holcim.
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