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June 2013 Test of New Remotely Operated Vehicle for Tank Inspections

June 19, 2013 Leave a comment

Our first use of the DEEP TREKKER ROV was successful.   We were able to get to the back of a 500,000 gallon potable water storage tank and see sediment level and interior conditions of roof support Columbus and walls.   The second inspection we did was on a one million gallon ground storage tank. We added a safety rope to protect the tether and found the lighting system caused a little bit of glare when we went into darker parts of the tank, but it was reduced when we got closer to the inspection points we needed to look at. Overall, we found it to be a very good inspection tool!

To learn more about what may be in potable water tanks and towers visit:

“THE CLEAN WATER TANK PROJECT”

For more information on RON PERRIN WATER TECHNOLOGIES click here or visit www.ronperrin.com

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WHAT IS IN YOUR POTABLE WATER STORAGE TANKS AND TOWERS?   Do you need a Potable water tank or tower inspected?

Our inspection methods offer the most information for the least cost,  all of our inspection methods include an underwater DVD

allowing you to see what is in your storage tanks.  Remote video camera, ROV or potable water diver we have a method for every budget or need.

Call us toll free at 888-481-1768 or simply fill out the form below:

DIY Potable Water Tank and Tower inspection. Updated June, 20, 2020

March 21, 2010 2 comments

GST – Ground Storage Tank Inspection

EST – Elevated Storage Tank Inspection

In Texas, potable water tanks are required to be inspected inside and out each year.  Of course, that is our business and we  are sure we have the best inspection method and offer the most information for the lowest cost.   Sometimes circumstances may arise that prevent funds from being available.

In that case, follow these steps to safely inspect your own water storage tank to meet state standards.

There are safety concerns before you get started. The first step is to be sure the person assigned to climb any type of water storage facility is fit.  Obviously climbing a water tower is physically challenging, but even smaller ground type storage tanks can require an exhausting amount of physical effort to climb.

Make sure everyone who is working on elevated surfaces (any water tank or tower) has completed a basic OSHA approved course on working at height.  Employees who conduct work on elevated surfaces are exposed to fall hazards and are required to receive fall-protection training. If you are going to make entry into the tank you will also need to acquire confined space training.  Employees who work in confined spaces face increased risk of serious physical injury. Hazards involving a confined space include entrapment, engulfment, and dangerous atmospheric conditions. As a result, employees who conduct work within confined spaces must be properly trained.

Next, you need the right equipment. Starting with a full body safety harness with Fall Protection Shock Absorbing Lanyards. If you are going to enter the tank for an inspection, a multi-gas monitor to perform atmospheric testing prior to entering a confined space is required under OSHA’s 1910.134.  You will also need at least a three man entry team that includes a supervisor, entrant and attendee.

Len Pardee

Len Pardee Environmental Compliance Officer and Inspection Supervisor (c) 2017 RPWT.

Inspection Technician on tower, using an underwater inspection camera and lighting system for a no-entry inspection.

Check the vent screen as it is the most common problem we see day after day.  The chlorine & other treatment chemicals used in potable water are very hard on steel mesh screens, so do not use stainless steel – it may seem like an upgrade, but it won’t last any time at all.

Vent Structure on EST

Vent Structure on EST

Next, check the level of the sediment on the bottom of the tank floor.  If you don’t have an underwater camera handy, you should drain the tank at least down to the level you can see the sediment on the floor. Make a note of the sediment depth & what it looks like, and make sure there are no insects, birds or other contaminants in the tank.  DO NOT ENTER the tank!  If you need to make entry into the tank you should follow all Confined Space Entry protocols including having at least a three- man trained team.  This is really important!  Chlorine gas can form above the water line in potable water storage tanks that have been treated with chlorine. In addition to that, corrosion on the steel can deplete oxygen levels in the tank making a deadly combination.  Our crews go in on their own air to dive the facility or use a remote camera to view the interior.  We NEVER ENTER THE TANK alone or unprotected!

If you choose to use an underwater camera to get a look inside, make sure it is purchased for, and only used in, potable water.  Cross contamination is a serious issue that you need to be aware of!  Visit our other blog at  www.ronperrin.us for more information on water storage tank contamination.

If you are inspecting a tank or tower with a ladder, be sure to have the fall protection equipment you need to get the job done safely.

View from the top of the ladder

Inspector on tower www.ronperrin.com

The proper safety equipment & training is the key to performing a water tower inspection safely.

Proper Safety Gear Must Be Worn

Get a copy of the Texas State Rules  for water tank inspection directly from the TCEQ here:

TCEQ 290.46 go to : Chapter 30,   TAC §290.46(m)(1)(A)

The State Form is also available HERE:

Texas Commission on Environmental Quality Tank Inspection Log

Some other states follow AWWA recommendations. Here are the main components that are required to be inspected annually in Texas, and  should be included in any potable water tank inspection.

Foundation: settling, cracks, deterioration

Condition of  Exterior Coating: rust, pitting, corrosion, leaks

Water Level Indicator: operable, cable access opening protected

Overflow Pipe: flap valve cover accessible, operable, sealed

Access Ladder: loose bolts or rungs

Roof: low spots for ponding water, holes along seams, rust

Air Vents: proper design, screened, sealed edges and seams

Cathodic Protection Anode Plates: secured and sealed

Roof Hatch: proper design, locked, hinge bolts secured, gasket

Interior inspections should include:

Condition of  Interior Coating : Check for rust, corrosion, blistering & scaling.

Water Quality Check for:

Insects in the tank both on the surface of the water and on the interior floor.

Floating debris

Sediment levels on the interior floor – (Sediment can be a habitat for bacteria & other contaminants).

Is your tank a HydroPressure Type Tank?

Pressure Type Tank

Check Operational Status: pressure release device, pressure gauge, air-water volume device

In Texas Pressure  Type Tanks that are large enough to have an inspection port are required to be inspected annually.

They are also required to be opened up and have the interiors inspected at least once every five years.

All inspection reports performed in Texas should be kept on file and available for TCEQ review for five years.


Do you need a Texas Inspection form?  Click here:  TCEQ TANK INSPECTION FORM.


Do you know how to inspect a water tower and stay safe?  Click this link to find out!

This should help you gat started on your potable water tank inspections.

If you need an inspection contractor call 817-377-4899 or see: www.ronperrin.us

Since 1997 we have performed thousands of inspections for water utilities in 14 states.

We have the proper training, inspection and safety equipment to safely deliver you the most information for the least cost.

ROV

Video Ray ROV

ROV Controller & Video Recorder

My book is a great reference point for state rules and requirements.

For safety training check out the OSHA Regional facility near you.https://www.osha.gov/otiec/

For online safety training check out https://www.oshatrain.org/

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For a price quote to inspect your water storage tank with our custom made remote water tank inspection camera and trained crew call toll free 1-888-481-1768 or use the online form at this link: Inspection Quote Request Link.
Visit my Web site at www.ronperrin.com or my other blog at www.tankdiver.us
(c) Ron Perrin 2020
 
 

Tank Diver Video

November 11, 2009 Leave a comment

This video shows a diver and a ROV inspecting a potable water storage tank in Texas.

Visit our Web site at   www.ronperrin.com

Also see our most popular blog at www.ronperrin.wordpress.com

e-mail ron to request quote at   ronlooks@aol.com

or call toll free      888-481-1768

We support H2O4Texas 

H2O4TEXAS will increase public awareness of the critical water shortfalls facing our state and begin mobilizing support for full implementation of the State Water Plan.    Visit   www.H2O4Texas.org

Potable Water Tank Inspections

November 17, 2008 1 comment

Since 1997 Ron Perrin Water Technologies has served the water utility industry providing state of the art inspections with remote underwater cameras.  Our inspection reports are the best in the industry covering all STATE REQUIREMENTS for water tank & tower inspection and meeting all AWWA guidelines. 

Click here for more information about Potable Water Tank Inspections

Our Web site about Potable Water Tank Inspections

or go to www.PotableWaterTankInspection.com 

 

We cover over 30 inspection points.  Our digital photography documents the condition of your tank, our narrated underwater video lets you see first hand what the inside roof walls and floor areas of the tank look like.

 

We offer the most choices for your inspection needs, 

 

* Diver inspection for the most detail

* ROV – Remotely controlled underwater vehicle

                  (specially designed for potable water use)

* Remote underwater video camera

                 (our most popular inspection, includes digital photos & narrated underwater DVD for the lowest cost).

* Basic inspection- no video no photos.  To meet state regulations for minimal cost.

 

 
 
 

 

Remotely controled vehicle

Remotely controled vehicle

 

 

If there is a deep sediment build up we offer a underwater cleaning service.  Using certified divers and special equipment we are able to remove the sediment in the floor of the tank with minimal water loss and no disruption in service. Unlike other diving companies who make their money offshore and work in the water utility industry part time, serving water utilities is 100% of our business!   

 

Our gear is purchase for and only used in potable water. 

 

Diving in potable water is an art.  Unlike offshore divers, potable water divers must be able to enter the water system without disrupting sediment on the floor of the tanks,   Our divers are sealed in a dry suit so no part of their body touches the water.  They are then washed down with a 200ppm chlorine solution to meet AWWA and state standards.  The diver is then free to go into the confined space inside the water storage tanks, underwater the diver can do a more detailed inspection or clean the loose sediment from the floor of the tank.  Visit  www.ronperrin.us to see video of divers inspecting & cleaning waterstorage tanks

 

We have serviced over 500 customers that include municipal governments, utility districts towns, communities, prisons, military bases and universities.  Our customers all have a few things in common they want the most information for the lowest cost with no disruption in there water system. 

 

Visit  www.ronperrin.com

 

Call toll free today for your no obligation proposal.  1-888-481-1768

 

Inspecting & Cleaning Potable Water Storage Tanks

October 2, 2007 Leave a comment

Yearly inspections of your potable water storage tanks is the best way to keep up with the sediment levels in your tank.   A good inspection of a potable water storage tank should allow the customer (the water Utility) to see the floor of the facility.  Using a Remote video camera or diver held camera the inspection often reveals 2 to 3 inches of sediment and sometimes much more. Keeping your water storage tanks clean may be one of the most overlooked maintenance procedures in the water industry.  Out of sight and out of mind, sediment in the bottom of your water storage tanks is never seen and rarely thought of.   The sediment that builds up in almost all potable water tanks can be a habitat for bacteria and other contaminates.  Bacteria can get a foothold in the sediment  out of reach of the chlorine entering the tank. Hidden in the sediment the bacteria can then grow and flourish creating a health risk. A nitrate eating bacteria can even deplete your chlorine levels leaving you at even greater risk. Removing the sediment and keeping your tank clean is the best way to maintain a healthy water system.  Divers wearing a dry suit are sealed in their own environment, they are then washed down with a chlorine solution meeting all State and AWWA requirements.  The divers may then enter the water system and vacuum out the sediment.  Everything that is loose is removed, allowing the chlorine or other treatment chemicals entering the tank to effectively do its job. This is a much more effective method than the traditional buckets and shovels.  We are able to remove ALL loose sediment without scraping shovels on painted surfaces.  In addition thereIs minimum water loss with our method, you do not need to DRAIN YOUR TANKS.         Call today to learn how we can save you water, time and money while helping you maintain the healthiest water system possible.

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1-888-481-1768        Visit  http://www.ronperrin.com