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SOR/89-570, s. 6(F).

DIVISION X
VOLUMETRIC LIQUID MEASURING MACHINES IN GENERAL

Interpretation

232. In this Division, "machine" means a volumetric liquid measuring machine and includes a volumetric liquid meter or a measuring tank for use in trade.

Design, Composition and Construction

233. A machine shall be designed and constructed to ensure complete delivery of the measured liquid and to prevent delivery of any unmeasured liquid.

234. All movable capacity indicators and means of adjustment on a machine shall be sealable.

235. (1) Component parts of a machine the removal or alteration of which could have an effect on the accuracy of measurement of the machine shall be sealable.

(2) Subsection (1) does not apply to a meter designed for measuring liquid food commodities.

236. Except as otherwise authorized by specifications established by the Minister, a machine shall register in units of volume of liquid at the temperature and pressure of the liquid in the measuring element of the machine.

Performance

237. A machine may be tested and calibrated using a liquid other than the liquid that the machine will measure in trade if the test liquid has hydraulic properties similar to the liquid that the machine will measure in trade or the test liquid is used with a correction factor that has been specified by the Minister.

Installation and Use

238. Where a machine is incorporated into a measuring system, the component parts of the system, including the liquid supply tank and any pump, piping, valve or delivery hose, shall be installed and used so as not to cause the machine to cease to measure accurately.

239. Unless otherwise authorized by specifications established by the Minister, a machine shall be installed so as to prevent the inter-mixing of liquids therein unless it is a machine approved for that purpose.

240. When a machine is installed in conjunction with piping other than a delivery hose or a short jumper hose, the piping shall be of rigid material.

DIVISION XI
VOLUMETRIC LIQUID METERS

Interpretation

241. In this Division,

"meter" means a volumetric liquid measuring machine for use in trade that is of the meter type or incorporates a meter; (compteur)

"registration" includes both visual indication and recorded representation of volume, unit price or monetary value. (enregistrement)

Design, Composition and Construction

242. The rated maximum flow of a meter shall be such that, when it is tested using refined petroleum products with normal lubricating properties such as kerosene or fuel oil, the meter will measure accurately without abnormal wear, and the meter shall be de-rated if necessary for use on products with lesser lubricating properties.

243. (1) The rated minimum flow of a meter designed to measure liquids other than liquefied gases shall be 20 per cent or less of the rated maximum flow of the meter.

(2) Subject to subsection (3), the rated minimum flow of a meter designed to measure liquefied gases shall be 33 per cent or less of the rated maximum flow of the meter.

(3) The rated minimum flow of a meter with a rated maximum flow of 90 L or less per minute that is designed to measure liquefied gases and to dispense liquefied gases to motor vehicles shall be 13 L or less per minute. SOR/90-118, s. 30.

244. Unless otherwise authorized by specifications established by the Minister, a meter shall have an integral filter or close-coupled strainer appropriate to the type, design and size of the meter.

245. Unless otherwise authorized by specifications established by the Minister, all meters except slow-flow meters and slow-flow dispensers shall have an automatic air-vapour eliminator and a meter for liquefied gases shall also have a combination differential-pressure and back-pressure valve.

246. Any accessory for a liquid meter that can affect the accuracy of the meter shall be sealable.

247. [Revoked, SOR/93-234, s. 2]

248. [Revoked, SOR/90-118, s. 31]

249. (1) Subject to subsection (2), the means of registration on a meter shall be capable of advancement only by the liquid passing through the meter.

(2) A meter register may be designed to be reset to zero by mechanical advancement of the register elements if, during the resetting,

(a) the elements of registration are obscured until the zero position is reached; or

(b) the advancing movement, once started, cannot be stopped until the zero position is reached.

250. The indications on any resettable register, totalizer or ticket printer on a meter that is designed to measure flow in both directions shall advance or reverse according to the flow of the liquid.

251. When a meter has a totalizer or preset register, it shall be clearly differentiated from the delivery register.

252. A resettable register shall have means to return the register accurately to zero, and the money register of a computing type register shall return to zero at the same time that the quantity register is returned to zero.

253. A computing type register shall be designed to prevent any change of the price setting during a delivery and so as to automatically display the unit price at which the register is set to compute.

254. A meter with a rated maximum flow of 350 L or less per minute that is intended to be used to measure and deliver motor fuel to motor vehicles, watercraft and aircraft shall be designed to be inoperable after a delivery until the register is reset to zero. SOR/90-118, s. 32; SOR/93-234, s. 2(E).

255. [Revoked, SOR/93-234, s. 2]

256. Unless otherwise authorized by specifications established by the Minister, a ticket printer shall be interlocked so that it can

(a) print only the quantity delivered; and

(b) deliver only the quantity for which a ticket is printed.

257. A meter that has a ticket printer shall be so designed that a jammed ticket can be removed without breaking the inspection seals on the means of adjusting the registration. SOR/90-118, s. 33.

258. Where an automatic temperature-compensated or other type of compensated register is installed on a meter, an uncompensated register shall also be provided that indicates the uncompensated volume measured by the meter.

259. The purchaser's cumulative register on a key-operated self-serve meter shall be designed so that it is readily visible to the purchaser at the time of delivery and will permit comparison with the quantity indication of the delivery shown by the primary indicator.

260. A meter shall have a sealable means of adjustment that will permit the meter to be adjusted to within 0.05 per cent of the quantity dispensed through the meter. SOR/90-118, s. 34.

Performance

261. When a meter is tested for acceptance limits of error at any flow rate between its rated maximum flow and its rated minimum flow using a known test quantity of liquid set out in Column I of an item in the applicable table to sections 265 to 270, the meter is within the acceptance limits of error in respect of that quantity if the quantity registered by the meter does not differ from the known test quantity by an amount in excess of the amount set out in Column II of that item. SOR/89-570, s. 6(F).

262. When a meter is tested for in-service limits of error at any flow rate between its rated maximum flow and its rated minimum flow using a known test quantity of liquid set out in Column I of an item in the applicable table to sections 265 to 270, the meter is within the in-service limits of error in respect of that quantity if the quantity registered by the meter does not differ from the known test quantity by an amount in excess of the amount set out in Column III of that item. SOR/89-570, s. 6(F).

263. When a meter is tested for either acceptance or in-service limits of error on three consecutive tests at any single rate of flow between its rated maximum flow and its rated minimum flow, the spread of the results shall not exceed

(a) one-fifth of the limit of error for the meter on tests under controlled conditions such as bench tests; and

(b) two-fifths of the limit of error for the meter on all other tests. SOR/89-570, s. 6(F).

264. [Revoked, SOR/90-118, s. 35]

265. (1) Subject to subsection (4), the limits of error set out in the tables to subsections (2) and (3) apply to slow-flow dispensers incorporating either meters or self-measuring pumps, dispensers for motor fuel of the service station type, meters on refuellers for small aircraft and boats, meters on vehicle tanks and to all other meters for use in measuring automotive or petroleum liquids in retail trade and that are not otherwise mentioned in the tables in this Division.

(2) The limits of error set out in the following table apply to meters that register in metric units of volume:

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(3) The limits of error set out in the following table apply to meters that register in Canadian units of volume:

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(4) The acceptance limits of error set out in Column II of the tables to subsections (2) and (3) apply only to tests made under controlled conditions such as bench tests, and for tests for acceptance limits of error under other conditions, the limits of error set out in Column III of those tables shall apply. SOR/89-570, s. 6(F).

266. (1) Subject to subsections (4) and (5), the limits of error set out in the tables to subsections (2) and (3) apply to all positive displacement bulk volumetric liquid meters, including vehicle-mounted meters that are designed to measure volumes of 180 litres or more or 40 gallons or more of refined petroleum products such as gasoline and fuel oils, foodstuffs such as milk, liquid fertilizers of the solution type such as aqua ammonia or other liquids of low viscosity.

(2) The limits of error set out in the following table apply to meters, generally of a size 65 mm or 2 1/2 inches or smaller that are designed to measure liquids of low viscosity:

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(3) The limits of error set out in the following table apply to meters, generally of a size 75 mm or three inches or larger that are designed to measure liquids of low viscosity:

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(4) The acceptance and in-service limits of error set out in the tables to subsections (2) and (3) apply to known test quantities equal to or greater than that delivered by the meter in one minute at the maximum operating rate.

(5) The acceptance limits of error set out in Column II of the tables to subsections (2) and (3) apply only to tests made under controlled conditions such as bench tests and, for tests for acceptance limits of error under other conditions, the limits of error set out in Column III of those tables shall apply. SOR/89-570, s. 6(F).

267. (1) Subject to subsections (4) and (5), the limits of error set out in the tables to subsections (2) and (3) apply to all positive displacement bulk volumetric liquid meters, including vehicle-mounted meters, that are designed to measure volumes of 180 litres or more or 40 gallons or more of heavy petroleum products, such as bunker oils, foodstuffs such as syrups, liquid cattle feed, fertilizers of high specific gravities or other liquids of high viscosity.

(2) The limits of error set out in the following table apply to meters, generally of a size 65 mm or 2 1/2 inches or smaller, that are used to measure liquids of high viscosity:

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(3) The limits of error set out in the following table apply to meters, generally of a size 75 mm or three inches or larger, that are used to measure liquids of high viscosity:

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(4) The acceptance and in-service limits of error set out in the tables to subsections (2) and (3) apply to known test quantities equal to or greater than quantities delivered by the meter in one minute at maximum operating rate.

(5) The acceptance limits of error set out in Column II of the tables to subsections (2) and (3) apply only to tests under controlled conditions such as bench tests, and for tests for acceptance limits of error under other conditions, the limits of error set out in Column III of those tables shall apply. SOR/89-570, s. 6(F).

268. (1) Subject to subsection (7), the limits of error set out in the tables to subsections (2) to (6) apply in respect of all meters that are designed to measure liquefied gases at ambient temperatures.

(2) The limits of error set out in the table to this subsection apply in respect of meters of a size from 25 mm to 50 mm or one inch to two inches, when tested using the liquefied gases the meters are intended to measure and using a narrow neck metal standard of the vapour displacement type.

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(3) The limits of error set out in the table to this subsection apply in respect of meters of a size 25 mm or larger or one inch or larger, except meters referred to in paragraph (4)(a), when tested using the liquefied gases the meters are intended to measure and using a pipe prover standard or master meter standard.

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(4) The limits of error set out in the table to this subsection apply in respect of

(a) meters used to dispense liquid propane to motor vehicles, when tested using the liquefied gases the meters are intended to measure and using a pipe prover standard or master meter standard; and

(b) meters of a size smaller than 25 mm or one inch, when tested using the liquefied gases the meters are intended to measure and using a pipe prover standard or master meter standard.

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(5) The limits of error set out in the table to this subsection apply in respect of

(a) meters used to dispense liquid propane to motor vehicles, when tested using the liquefied gases the meters are intended to measure and using a gravimetric prover standard; and

(b) meters of a size smaller than 25 mm or one inch, when tested using the liquefied gases the meters are intended to measure and using a gravimetric prover standard.

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(6) The limits of error set out in the table to this subsection apply in respect of meters of a size 25 mm or larger or one inch or larger, except meters referred to in paragraph (5)(a), when tested using the liquefied gases the meters are intended to measure and using a gravimetric prover standard.

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(7) The acceptance limits of error set out in Column II of the tables to subsections (2) to (6) apply only in respect of tests made under controlled conditions, and for tests made under other conditions the limits of error set out in Column III of those tables apply. SOR/89-570, s. 6(F); SOR/90-118, s. 36.

269. (1) Subject to subsection (4), the limits of error set out in the tables to subsections (2) and (3) apply to all slow-flow meters rated at 115 litres per hour or less or 25 gallons per hour or less for use in trade in pipeline systems to measure fuel oil, stove oil or kerosene supplied to furnaces and other heating equipment, or in any other system where the meter is permanently connected to a point of fuel consumption.

(2) The limits of error set out in the following table apply to meters designed to operate at 2.25 to 22.5 litres or more per hour or 0.5 to five gallons or more per hour:

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(3) The limits of error set out in the following table apply to meters designed to operate at 0.10 to 3.4 litres or more per hour or 0.02 to 0.75 gallons or more per hour:

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(4) The limits of error set out in the tables to subsections (2) and (3) refer to the results of bench tests made in accordance with specifications established by the Minister for slow-flow meters. SOR/89-570, s. 6(F).

270. (1) In this section,

"API Gravity" means the amount obtained using the following formula:

(densité API)

"API Standard" means the Manual of Petroleum Measurement Standards, published by the American Petroleum Institute in August, 1980, with the designation "API, Standard 2540"; (norme API)

"ASTM" means the American Society for Testing and Materials; (ASTM)

"ASTM-IP" means the American Society for Testing and Materials--Institute of Petroleum; (ASTM-IP)

"VCF" means, in respect of a mechanical or electronic automatic temperature compensator, the applicable volume correction factor

(a) at the temperature of the measured liquid during each test of the compensator, in the column corresponding to the density at 15°C in kilograms per cubic metre for which the compensator is marked or adjusted, or to the density corresponding to the cubical coefficient of thermal expansion, relative density or API gravity for which the compensator is marked or adjusted, that is set out

(i) in the case of natural crude oil, in Table 54A of the API Standard,

(ii) in the case of generalized liquid petroleum products, in Table 54B of the API Standard, and

(iii) in the case of lubricating oils, in Table 54D of the API Standard,

(b) at the temperature of the measured liquid during each test of the compensator, in the column corresponding to the agreed or experimentally determined cubical coefficient of thermal expansion at 15°C for that liquid and for which the compensator is marked or adjusted, that is set out, in the case of special petroleum liquids to which Tables 54A, 54B and 54D of the API Standard are not applicable, in Table 54C of the API Standard, or

(c) at the temperature of the measured liquid during each test of the compensator, in the column corresponding to the density at 15°C in grams per litre for which the compensator is marked or adjusted, or to the density corresponding to the cubical coefficient of thermal expansion, relative density or API gravity for which the compensator is marked or adjusted, that is set out, in the case of liquefied petroleum gases, natural gas liquids and asphalts, in Table 54 of the ASTM-IP Petroleum Measurement Tables, with designation ASTM D1250, 1953 Metric Edition. (FCV)

(2) Subject to subsections (4) to (6), the limits of error set out in the table to this subsection apply in respect of mechanical automatic temperature compensators used in conjunction with meters in the measurement of liquids.

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(3) In the table to subsection (2) and in subsections (5) and (7),

(a) "NET" is the corrected registration of the register and "GROSS" is the uncorrected registration of the register; and

(b) *"?T" is the difference in degrees Celsius between the test temperature and the mid-range temperature of the automatic temperature compensator and that difference, except for compensators used with meters for liquid propane and other liquefied gases measured at ambient temperatures, shall not exceed 15 Celsius degrees or 27 Fahrenheit degrees when calculating the limits of error.

* For the purposes of this equation, the "?" represents the "delta" symbol.

(4) The acceptance limits of error set out in Column II of the table to subsection (2) apply only to tests made under controlled conditions, and for tests made under other conditions the limits of error set out in Column III of that table apply.

(5) In addition to being within applicable limits of error, the NET/GROSS ratios shall agree within 0.001 on at least two of three consecutive tests at the same temperature under controlled conditions.

(6) The limits of error for mechanical automatic temperature compensators submitted for approval pursuant to section 3 of the Act shall be one half the limits of error set out in the table to subsection (2).

(7) The limits of error set out in the table to this subsection apply in respect of electronic automatic temperature compensators used in conjunction with meters in the measurement of liquids.

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(8) Where an automatic temperature compensator referred to in subsection (7) is not marked as described in the definition "VCF" in subsection (1), the printed ticket, card, bill of lading or other printed record of a transaction shall specify the density, relative density, API gravity or cubical coefficient of thermal expansion, as appropriate, for which the compensator is adjusted, for each delivery by the meter. SOR/89-570, s. 6(F); SOR/90-118, s. 37.

Installation and Use

271. A meter shall be properly suited to the particular installation in which it is to be used, with respect to pressure, rate of flow, temperature, compatibility with the characteristics of the liquid to be measured and method of use so that, for all normally occurring variations in operating conditions, measurement by the meter remains within the applicable limits of error. SOR/89-570, s. 6(F).

272. The equipment and accessories installed with a meter shall be selected and installed so as to minimize their interference with the proper operation and accuracy of measurement of the meter.

273. The pump suction piping installed with a meter shall be as short and unencumbered as possible and all liquid supply systems associated with a meter shall be arranged to minimize the ingress of air, water or other foreign matter, including any liquid other than the one the meter is intended to measure.

274. A meter and all equipment and accessories associated with it in an installation shall be installed so as to minimize the evolution of dissolved air and gases and to minimize the vaporization of the liquid prior to or during measurement or in the delivery conduit.

275. (1) A meter shall be installed so that it can only be operated when the liquid in the meter is at or above atmospheric pressure, and in any installation where the liquid pressure could fall below atmospheric pressure, a suitable vacuum breaker shall be installed at the outlet of the meter.

(2) A meter shall be operated only when the liquid in the meter is at or above atmospheric pressure.

276. When a meter is installed in a measuring system, the system shall be equipped with effective automatic means to minimize the passage of air or vapour through the meter.

277. A meter shall have installed immediately upstream therefrom a screen, strainer, filter, integral filter or such other approved means as will prevent foreign matter from passing through the meter.

278. For the purposes of sections 276 and 277, a close-coupled strainer and automatic air release valve is sufficient in meter installations where only free air or vapour is to be removed from the liquid.

279. The air or vapour eliminator installed with a meter shall minimize the passage of air or vapour through the measuring element of the meter when the supply of liquid is exhausted or appropriate means shall be provided to automatically stop the flow of liquid or to indicate to the person using the meter that air or vapour is passing through the meter.

280. Sealed flow control valves or other means shall be installed with a meter to limit the flow through the meter to its rated maximum flow.

281. Unless a meter is equipped with a reversing register and totalizer in accordance with section 250, it shall be installed so as to minimize any reverse flow through it or the piping or equipment upstream or downstream from it that could affect the accuracy of its measurement.

282. (1) In this section, "transfer point" means the fixed point in a measuring assembly where transfer of possession of a quantity of liquid contained in the measuring assembly takes place.

(2) A meter shall be installed so that the piping between the meter and the transfer point remains full of liquid during and after a transaction unless the liquid, because of its nature, cannot remain in the meter, and

(a) in the case of a meter installed to deliver a quantity of liquid, so that the piping downstream of the transfer point shall empty at the completion of the transaction; and

(b) in the case of a meter installed to receive a quantity of liquid, so that the piping upstream of the transfer point shall empty at the completion of the transaction.

(3) Subject to section 289 and except as otherwise allowed by any additional specifications established pursuant to section 27, a meter shall be installed

(a) so that all piping downstream of the meter, where the meter is installed to deliver a quantity of liquid, or all piping upstream of the meter, where the meter is installed to receive a quantity of liquid, may be readily inspected; and

(b) with only one delivery outlet unless the meter is installed

(i) so that diversion of flow is readily apparent to the purchaser or the purchaser's agent by automatic means such as visible valves or lights with explanatory signs that indicate which outlets are in operation,

(ii) to fuel or defuel aircraft, or

(iii) to be used exclusively to load vehicle-mounted propane tanks with a capacity greater than 5 000 L. SOR/90-118, s. 38.

283. A meter, other than a slow-flow meter, slow-flow dispenser, dispenser of the service station type for motor fuel or a meter equipped with a preset valve, shall have a quick-acting valve installed near its outlet for inspection purposes. SOR/93-234, s. 2(F).

284. A meter, other than a slow-flow meter, shall be installed so that it has a convenient means for delivering the measured product when the meter installation is tested and inspected.

285. Any automatic valve that can have a throttling effect on the flow of liquid shall be installed downstream from the meter.

286. (1) Unless otherwise authorized by specifications established by the Minister, the outlet end of the delivery hose of a pump-supplied meter shall be equipped with a spring-loaded anti-drain valve or its equivalent.

(2) Subsection (1) does not apply to a meter with collapsible hoses used on aircraft refuellers or to a meter designed for defuelling aircraft.

287. The discharge hose installed with a meter supplied by gravity head may be of the dry hose type without a shut-off valve at the discharge end, but it shall be of such length, size and stiffness as to ensure complete drainage and there shall be means provided in the meter system to show the empty condition of the hose and to prevent the meter from draining.

288. Where it is necessary

(a) to limit changes in the viscosity of, or the solubility of material dissolved in, the liquid to be measured by the meter, or

(b) to limit the rate of change of the temperature or pressure of the liquid to be measured by the meter when the meter is equipped with an automatic compensator,

appropriate automatic controls shall be installed in the meter system to permit the meter to measure accurately. SOR/90-118, s. 39.

289. Meters installed for loading railway tank cars or located at pipeline terminals or used for loading or unloading tanker ships may have

(a) the piping on the downstream side of the meters concealed, and

(b) the outlets interconnected,

if adequately interlocked manual or automatic valves with means for leakage detection are incorporated in the meter system to prevent diversion of the measured liquid.

290. A meter shall be operated only at flow rates between the rated minimum and maximum flow rates marked on the name plate of the meter.

291. If any part of a meter system is drained for any reason the entire system shall be re-primed and re-filled and the register set to zero before the meter is used for the next measurement.

292. A flow transmitter for input to an electronic data processing system may be attached to a liquid meter and the output from the data processing system used for invoicing purposes if the purchaser of the liquid being measured or his agent is given a printed copy of the data recorded by the data processing system before he leaves the trader's premises.

293. A flow transmitter may be installed at a key-operated self-service meter installation to drive the unverified accumulative totalizers for individual customers if the purchaser of the liquid being measured is able to visually check the advance of his totalizer against the indication of the primary indicator at the time of delivery of the liquid.

294. Where a meter mounted on a vehicle tank is used in circumstances where the purchaser does not normally view the meter during delivery of a liquid, the meter shall be equipped with an interlocked ticket printer that shall be used for each delivery of the liquid.

295. Tickets used with a meter equipped with an automatic temperature or other compensator shall bear statements that the volume indicated thereon has been adjusted to correspond to an equivalent volume at a standard condition stated on the ticket.

DIVISION XII
MEASURING AND VEHICLE TANKS

Interpretation

296. In this Division,

"tank" [Revoked, SOR/90-118, s. 40]

"vehicle tank" means a measuring tank that is mounted on a vehicle other than a vehicle for railway use. SOR/90-118, s. 40. (réservoir sur véhicule)

Design, Composition and Construction

297. A tank and its piping system and any equipment or accessories that can affect its accuracy of measurement shall be of such design, composition and construction that when a delivery is made from any capacity indication, the quantity of liquid delivered through any discharge valve rigidly connected to the tank is within the prescribed limits of error for the tank. SOR/89-570, s. 6(F).

298. The shells or bulkheads of a tank shall consist of such material and be so constructed that they will not become distorted under any condition of loading under normal conditions of use.

299. A tank shall have an effective means of automatic venting to permit the free passage of air into and out of the tank when it is emptied and filled.

300. Subject to section 320, there shall be no pipe or other flow connection between two or more tanks that are separately calibrated, but a battery of calibrated tanks may be connected to a common discharge manifold that prevents flow from one tank to another.

301. The capacity indicators on a tank shall consist of

(a) graduations on or adjacent to a gauge glass or tube; or

(b) appropriate internal capacity indicators. SOR/93-234, s. 2.

302. A capacity indicator shall only be installed in a tank at any level where a quantity of liquid equal to the limit of error referred to in section 325 for the indicated quantity causes the liquid at that level to rise by at least 2.5 mm or 3/32 of an inch. SOR/89-570, s. 6(F); SOR/90-118, s. 41.

303. A maximum capacity indicator shall be positioned to allow a volume equal to at least one per cent of the capacity of the tank for the thermal expansion of the liquid.

304. When an internal capacity indicator is installed in a tank,

(a) the indicator shall be attached to a permanent section of the tank; and

(b) a means shall be provided to attach a seal on the indicator. SOR/93-234, s. 2; SOR/94-691, s. 4.

305. A tank equipped with an internal capacity indicator shall have a suitable opening for the convenient installation, adjustment and sealing of the indicator assembly and the capacity indicator shall be located so that it can be seen under normal conditions of use.

306. Gauge glass fittings shall not, except on tanks for liquefied gases, be of the ball check type or be of any type designed to prevent loss of liquid in case of glass breakage, but a bottom gauge glass fitting may include an emergency valve if means are provided thereon to allow an inspector to seal the valve in the open position.

307. The discharge hose on a tank that discharges by gravity shall normally be of the dry hose type, without a shut-off valve at its discharge end, shall be of such length, size and stiffness as will ensure its complete drainage and shall be provided with a means to indicate when all of the measured liquid has been delivered thereby.

308. (1) A tank that discharges through a pump shall have an automatic means of ensuring that

(a) the quantity of liquid in the pump suction and discharge lines remains constant; and

(b) all the measured liquid is delivered through the pump.

(2) Subsection (1) does not apply to a tank used for bunker oils and similar liquids.

309. A fixed tank shall have suitably installed and identified levelling ledges that will permit the detection of any tilting of the tank from the position in which it was calibrated.

310. (1) A portable tank shall be equipped with permanent level gauges to enable it to be levelled for inspection and use.

(2) A portable tank with a gauge glass shall be equipped with levelling jacks to enable it to be levelled for inspection and use. SOR/93-234, s. 2(F).

311. A vehicle tank shall be designed so as to permit the complete discharge of the contents of the tank and piping when the vehicle is on a surface that is within three degrees of level or shall be equipped with clearly defined and appropriately located means to indicate when an off-level position will prevent the tank and the piping from filling or draining properly.

312. An internal capacity indicator on a vehicle tank shall be centrally located in the tank or compartment, affixed to a mounting bracket on the dome neck by brazing, welding or bolts and shall be sealable.

313. When two or more capacity indicators on a vehicle tank are affixed to a mounting bracket, the bracket shall be held in a vertical position by a suitable brace or other reinforcement.

314. Internal capacity indicators on a vehicle tank shall be adjustable in increments of 0.8 mm or 1/32 inch or less.

315. When a vehicle tank is composed of two or more separate measuring compartments, any space between the compartments shall be equipped with drains capable of indicating leakage into the space.

316. The outlet piping from a vehicle tank may be split into a bottom-fill connection and a drain connection, but where the bottom loading stub can trap air in excess of 0.125 per cent of the capacity of the tank to the lowest marker when the tank is filled from the top, the tank shall be calibrated for top-fill.

317. (1) Subject to subsection (2), a common manifold connected to a vehicle tank may be split into two sections separated by means of a valve if the valve is designed so that it cannot be left in any open position.

(2) A gate valve may be used in place of the valve referred to in subsection (1) if the volume that can be diverted by leaving the gate valve open does not exceed 0.125 per cent of the capacity of the smallest tank connected to the manifold.

318. [Revoked, SOR/93-234, s. 2]

319. The piping on a vehicle tank restricted for use with bunker oil may be concealed by insulation or by parts of the tank to prevent the bunker oil from congealing.

320. Individual compartments on a vehicle tank restricted for use with bunker oil may be connected to a common discharge manifold without any automatic means of preventing flow between the compartments.

Performance

321. A tank shall be tested and calibrated with a liquid that has a thermal expansion coefficient, volatility and viscosity not greater than that of domestic furnace fuel oil and that will not have a corrosive effect on the tank.

322. A tank shall be tested and calibrated when all necessary supports have been installed and it is resting in the position in which it is designed to be used.

323. A tank, other than a vehicle tank, shall be calibrated to a valve immediately adjacent to the outlet connection on the tank.

324. Unless otherwise authorized by specifications established by the Minister, a tank that has a gauge glass or a slip type gauge shall not be calibrated for a delivery of less than 50 per cent of the tank capacity.

325. (1) Subject to subsection (5), when a tank is tested for acceptance limits of error using a known test volume determined in relation to a relevant local standard and set out in Column I of an item of a table to subsection (3) or (4), the tank is within the acceptance limits of error in respect of that known test volume if the actual volume of the tank

(a) does not exceed the test volume by an amount in excess of the amount set out in Column II of that item; and

(b) is not less than the test volume by an amount in excess of the amount set out in Column II of that item.

(2) Subject to subsection (5), when a tank is tested for in-service limits of error using a known test volume determined in relation to a relevant local standard and set out in Column I of an item of a table to subsection (3) or (4), the tank is within the in-service limits of error in respect of that known test volume if the actual volume of the tank

(a) does not exceed the test volume by an amount in excess of the amount set out in Column III of that item; and

(b) is not less than the test volume by an amount in excess of the amount set out in Column III of that item.

(3) Subject to subsection (5), the limits of error set out in the following table apply to all measuring tanks whether fixed, portable or vehicle mounted, that are calibrated in terms of metric units of volume:

TABLE

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(4) Subject to subsection (5), the limits of error set out in the following table apply to all measuring tanks whether fixed, portable or vehicle mounted, that are calibrated in terms of Canadian units of volume: