A buyer in a poultry operation usually sends a short enquiry and gets three different answers back. One supplier quotes a machine, another quotes a system, the third says it is not their market. The difference is rarely the supplier. It is the brief. A brief that lists the surfaces, the deposits, the utilities at the position and the acceptance condition lets three quotations be compared line by line. A brief that says we need a strong steam cleaner for our sheds guarantees that each supplier will guess on your behalf.
This page is a working outline for that document, written for the outside of the equipment in a poultry house: feeder lines and their drives, water lines and drinkers, fan guards and inlet covers, silo shells, cage or pen frames, and the outsides of control cabinets and motors.
What the brief has to make comparable
Write the purpose of the document in the first paragraph: you are asking for a proposal to clean named surfaces, on a named calendar, under your utility conditions, judged against your own acceptance standard. That one sentence changes what a supplier is obliged to price. It also tells you, at quotation stage, whether they have done this class of work at all, because an answer that ignores your surface list is already an answer.
A useful discipline is to write the brief so that a third party could execute it without you present. Anything you would have to explain on a phone call is a gap in the document, and a gap gets filled differently by every supplier who reads it.
List the surfaces house by house, not as one category
Make a table with one row per surface and give it four columns before you contact anyone: surface and location, deposit type and how long it has been there, how you reach it today, and whether the house is occupied or empty when it is done. In a poultry building the rows usually split into feeder troughs, auger and drive covers, hopper chutes, pan and nipple water lines with their hangers, drinker bowls and cups, fan guards and inlet shutters, duct and vent casings, silo shells and ladders, cage or pen frames, slat edges, pit and channel walls near the equipment, and the shells of electrical cabinets, junction boxes and motor housings.
Deposit wording matters more than adjectives. Dried feed paste, caked dust mixed with litter fines, feather matting, mineral scale around a water line, and a thin film of grease on a drive cover all behave differently when heat and dwell are applied, and they ask for different technique. Write what you actually see on each row. If a row is described as dirty, every supplier will assume a different dirt.
Reachability and the occupied-house question belong in the same table
Two rows that look identical in a photograph can differ completely in cost. A fan guard you can reach from a platform with both hands free is not the same job as one reached from a ladder over a litter surface. A water line cleaned in an empty house between flocks is not the same job as one cleaned while the birds are in place, where noise, heat, moisture and the disturbance to the flock all set limits. Mark each row as occupied-house work or empty-house work, and mark how it is reached. If your flock calendar is fixed, put the placement dates in the brief too, because that calendar decides what any proposal can realistically deliver.
Write the exclusions before you write the requirements
The most expensive part of a cleaning brief is what it fails to rule out. Put a block near the front that names what is not in scope for anyone proposing work, and for each excluded item state what should happen instead. On a poultry-house equipment list the block normally covers electrical enclosures, junction boxes and cable runs; bearing seals and shaft ends; drive belts, chains and their guards where the manufacturer has not authorised washing; brake and friction surfaces; sealed motor housings with an unconfirmed rating; instrumentation, sensors and calibration equipment; insulation panels and any coating whose cure condition you cannot confirm. If one of those items still has to be cleaned, do not fold it into the general list. Give it its own written procedure, name who authorises it, and ask the supplier to state plainly whether their proposal touches it.
Ask the supplier to mark your table rather than comment on it. A supplier who reads your exclusion list and adds rows you missed has done an engineering review. A supplier who returns the table unchanged has priced the words, not the work.
State the utilities at the position, not at the gate
Poultry houses are where proposals break on utilities, because the connection you can use is rarely near the equipment. For every work zone write down what you can actually supply: where power can be drawn and by whom it is permitted to connect; where water comes from and how far the run is; whether the water is mains, borehole or stored, and whether it is the same supply that serves the birds; where the run-off goes and who signs for that route; whether floor drains, channels or a pit are usable for this work; how long a zone can be out of service; and what lighting and ventilation exist while work is happening. If a zone has no drain, say so. A proposal that ignores run-off will reach the same conclusion you did, only later and more expensively.
Also record what you cannot control: frost risk, the window when birds cannot be disturbed, and the rule that litter must be dry before birds return or before equipment is restarted. These are your constraints, not the supplier's, and putting them in the brief stops a proposal that would leave a wet floor at the start of a placement.
Ask the supplier what their own pages do not say
Published product pages describe equipment and the environments the maker positions it in. On the cleaning range reviewed here, the mobile machines are presented around indoor garages and narrow outdoor parking, and the fixed unit page places vehicle exterior work at fuelling points and parking areas, with interiors and engine bays also named. Poultry houses do not appear on those pages as a listed application. That is not a refusal, and it is not a reason to accept a claim either. Put the question in the brief: has this machine been used on animal-housing equipment surfaces, what limits applied, and what in the current design would prevent it. Attach your surface table and ask for the rows they would decline. If the answer is generic, treat the quotation as unproven and keep it only if the trial below can settle it.
The same discipline applies to the technical rows. Ask for the working voltage requirement, the water feed and acceptable source, the tank and heater arrangement as a limit on how long one session can run, the footprint and how the unit moves through your doors, and the protection functions together with what makes them interrupt a job. Get them for the exact unit quoted, in writing. A figure printed for a different model, or a tank volume read as working time, is the most common way a good-looking proposal fails on your floor. The PowerDe steam cleaning machine range page is a fair starting point for the classes of equipment to ask about, and the Fixed Steam Cleaning Machine PowerDe HW02 page shows how a fixed unit is specified, which is useful as a format for the questions you want answered for any candidate.
Define acceptance per row, not in adjectives
Write for each surface what a person standing there would have to see to sign it off. Clean deposit removed along the upper edge of a trough, not we need it hygienic. A drinker cup with no residue under the rim, not a shiny house. A fan guard whose blades and frame can be inspected without a second pass, not deep cleaned. Then write the closing condition that every wet row carries, which in a poultry building is usually that the surface and the floor around it are dry enough to walk and to restart equipment, plus a named inspector who is not the person who did the work. Adjectives cannot be tested at handover, and the argument you will have after the work is the one you saved by writing the condition beforehand.
Buy a bounded trial, not a programme
Before any contract, run one zone with one machine on a few rows from your own table: a section of water line, one fan guard, a length of trough, one drive cover. Fix the trial in writing with a start and end point, the acceptance condition for those rows, the observations you are recording (time spent on each row, water used, whether the machine had to stop, what was left behind, and what had to be redone by hand), and the stop conditions that end the trial without further debate. Common stop conditions are moisture reaching a place you did not authorise, a deposit that survives more than the agreed number of passes, litter that cannot be dried inside your window, or a protection function that interrupts the job repeatedly. A trial that has no stop condition turns into a favour to the supplier.
Keep the trial record as one page. It is the document you attach to the brief when you go back to the supplier, and later the evidence you use to hold anyone to the same standard across the remaining houses.
What must stay open until your own trial fills it
Some rows in your brief can only be answered on your site, and a serious supplier will expect you to say so. Whether the litter and bedding next to a surface can be dried inside your flock window. Whether the run-off route your site will actually sign for reaches the zone without a hose run across a walkway. Whether disturbance during an occupied-house pass is acceptable for your birds at all, and if not, which rows simply move to the empty-house list. Whether your own doors, gate widths and levels let a candidate unit through without disassembly. Write these as open items you own, with the trial as the method. A brief that hides them reads as though the buyer has never walked the job.
Version the brief and name who reviews it
Put a version number, the date, and the name of the person who last walked the houses with the table in hand. Add the date when the trial results were written back into it. A brief that never gets revised turns into a document that describes a shed you no longer run. When a row changes, delete the old wording rather than adding a note beside it; the credibility of the whole document rests on the rows people believe, and a version with a review date and one honest revision is worth more than a longer document nobody has confirmed.
Close the document with the questions you want answered in writing
End the brief with the questions, so a reply that skips them is visibly incomplete. Ask which rows on your table the proposal covers and which it declines, and why. Ask what has to be present at the position for the job to run, in power and water terms. Ask where the run-off goes according to their own experience and what they have seen go wrong with it. Ask what the machine cannot do on these surfaces, in plain words. Ask what the acceptance condition would be if you wrote it as above, and whether they will sign to it after a trial. If the scenario you are describing sits outside what a supplier publishes, say so in the brief and ask whether it is inside their experience at all; where the standard catalogue does not match the job, that is the point to raise it directly, as customized steam cleaning equipment work rather than as an assumption carried silently through the enquiry.
