The TI/133D is the OFTEC tank siting risk assessment: sixteen yes or no questions about where a domestic oil tank sits, covering spillage, restraint and fire. You do one when a tank goes in, and again when anything about the siting changes, and it is the document a CD/10 asks after.
One thing to understand before you start: there is no pass or fail on a TI/133D. The questions do not decide anything automatically. They walk you round the hazards, and then you record the three recommendations yourself: whether secondary containment is required, whether tank restraint is recommended, and whether fire protection is required. Those three answers are the result of the assessment, and Mucka never fills them in for you, because a wrong automatic answer on a fire risk assessment is worse than none.
Before you start
Make sure Mucka knows you work with oil. Open the certificate settings (see Set up your certificates) and tick Oil, or Gas and oil if you do both.
Your OFTEC numbers print on the assessment if you have added them, and never block you if you have not, because oil is not a licensed trade the way gas is.
Start the assessment
Two ways in:
- From the job. Open the job from Jobs and use the certificates card. Starting it here links the client, the property and the engineer for you.
- From the certificates page. Go to Gas & Oil Certs, tap New certificate, choose the Oil tab, and pick Domestic Oil Storage Tank Spillage & Fire Risk Assessment (TI/133D).
If your job types include Oil Tank Risk Assessment, Mucka already knows that job wants a TI/133D and will offer it on the job itself.
Fill it in
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Details. The assessment date and the engineer.
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Client and property. Prefilled if you started from the job.
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The tank. Type, capacity, make, serial number and OFCERT licence number. If there is a CD/10 on file for the property, Mucka offers to copy the tank details across in one tap, so you are not retyping a serial number you already recorded at the install.
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The sixteen questions. Three groups, and each group opens with a plain line telling you what a yes means before you answer anything:
- Spillage (nine questions): tank capacity over 2500 litres, distance to controlled water, drains and manholes, springs and boreholes, whether it supplies more than a single dwelling, Source Protection Zones, hard ground run-off and the vent pipe. If any answer is yes, secondary containment must be provided, an integrally bunded tank or a masonry or concrete bund.
- Restraint (one question): high winds or flood risk. A yes means restraint should be provided as the tank manufacturer recommends.
- Fire (six questions): the separation distances to buildings, boundaries, eaves, openings and flue terminations, and whether the base extends 300mm around all sides. If any answer is yes, fire protection must be provided.
On every row, yes means a hazard is present, including the base question, which the form words negatively. You can add a note and photos to any question, and a photo of the actual separation distance is worth more than the answer on its own.
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Your recommendations. At the end of each group you record your own answer: Secondary containment required?, Tank restraint recommended? and Fire protection required?. Mucka shows you what you answered above, but the call is yours.
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Next assessment due. Mucka suggests twelve months ahead. Change it if you need to. This is advisory, and it is what puts the tank back on your certificates-due list and into the service reminders next year.
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Sign it off. The engineer signs on screen. The customer can sign for receipt too, but they do not have to.
Everything saves as you go, so you can put your phone down mid job and pick up where you left off, even on a different device.
Approve and send
Tap Approve when it is done. There is no outcome to confirm, because the three recommendations are the outcome. Approving locks the record as a legal document and generates the PDF. After that it cannot be edited, only corrected by issuing a replacement.
Then tap Send. Mucka prefills the client from the property and attaches the PDF. Check the message, then send.
What the certificate looks like
Your business details with your OFTEC registration, the property and client, the tank's identity, then the three hazard groups with every question and your answer, and your three recommendations stated plainly. Any photos you attached go into the photo appendix. No pass or fail pill anywhere, because that is not what this document is.
More than one certificate on one visit
Some visits raise two documents. A job type can say so, and then the job asks you for each of them.
The clearest case is an installation: the CD/10 completion report asks after a TI/133D, so a job type for putting a tank or boiler in can name both.
In Settings → Work → Job types, edit the job type, pick the certificate it mainly produces, and tick anything else it raises under Also produces. From then on:
- The job lists each one under what it still needs, on its own row, named properly.
- Tapping a row opens that certificate. You are not sent to a list to find it again.
- As you issue them the list gets shorter, so what is left on screen is what is left to do.
- The Certificates page counts each one separately, so a job with one done and one outstanding still shows as owing it.
It is not an oil-only idea and Mucka does not decide the pairings for you — you tick what your visits actually produce, because that varies by firm.
When you finish one, Mucka offers the next
If the job owes a second document, you do not have to go back to the job to find it. Approve the first and the Certificate approved screen offers it right there — above Send to client, because the paperwork that needs you on site beats the paperwork you can send from the van.
Tapping it starts that certificate with what the two genuinely share already in: the date, your name, and the tank's make, type and serial number. A tank does not change between two forms filled in an hour apart.
Nothing you are meant to look at is filled in for you. On a TI/133D that means all sixteen questions are blank and so are the three recommendations, for the reason at the top of this page: a wrong automatic answer on a fire risk assessment is worse than no answer.
The other oil forms
The TI/133D joins the CD/10 installation completion report, the CD/11 oil boiler service and the CD/12 landlord check. Only the CD/14 warning notice is still to come. Ask Mucka about it and it will log that you are waiting on it.