- Gauging of shore / ship’s tanks
- Weighing of road / rail vehicles
Inspection for cleanliness:
- Inspection of shore / ship’s lines and pumps
- Inspection of ship’s tanks
- Preshipment sampling as per FOSFA 53
- Preshipment sampling and sampling ex ship’s tanks as per FOSFA 54
Visual inspection of the cargo:
- Samples drawn from load pipe throughout loading, first-foot samples and ship’s tanks samples.
FOSFA International – Code of Practice for Member Superintendents
FOSFA 53 – Contract for Vegetable and Marine Oil (in bulk). FOB terms
FOSFA 54 – Contract for Vegetable and Marine Oil (in bulk). CIF Delivered Weights
ISO 5555:1991 – Animal and vegetable fats and oils – sampling.
FOSFA International list of banned immediate previous cargoes
FOSFA List of acceptable previous cargoes
Before vessel’s arrival:
If delivering from tanks by volumes:
a) Dip shore tanks gross. Check dip pattern with regular shore personnel.
b) Test for free water and dip.
c) Take tank temperatures.
d) Draw samples from shore tanks for specific gravity / density test and reference.
e) Check tank main pipelines segregated and reported condition: full or empty.
f) Check installation interconnector and jetty pipelines segregated and reported condition: full or
g) Check pigging facilities.
h) Check pipelines lengths and capacities in installation records.
i) Where pipelines reported full find means to check whether completely or only partly full, and of what (sample and visually examine contents and have pipeline pressed up before commencing loading). If necessary, stop pumping after a few minutes loading and measure shore and ships tanks to compare quantity loaded with theoretical pipe capacity.
j) Where pipelines reported empty, check last product through the line, methods used to clean line, inspect drains and open ends where accessible, if pigging facilities have pig passed through lines.
k) Check pumps segregated and reported condition: full of product or empty and clean.
l) Where pumps reported in product, sample and visually examine contents.
m) Where pumps reported empty and clean, check last product through pump, method used to clean pump, inspect drains and connections where accessible. If necessary have cover plate, etc., removed to inspect.
n) Check make-up and materials of flexibles – suitable for conveying products.
o) Examine visually and check last product through flexibles and method of cleaning.
If loading from road / rail vehicles:
a) Gross weight vehicle prior to discharge.
b) Tare weight vehicle after discharge. Note: always tare weight vehicle – do not accept constant or painted tares. Always compare actual tare weight with painted tare.
c) Rigid horizontal tank vehicle – check free water with water detector.
d) Articulated sloping tank vehicle – check low point outflow for free water prior to loading.
e) Sample each compartment of vehicle separately, when requested.
f) Visually examine sample for physical condition – clarity, colour, sediment, etc.
g) Retain small check sample.
If loading from ship, coaster, barge:
For overside transhipment, refer to check list for “Discharge from ship”.
Upon vessel’s arrival.
- Contact Master.
- Inspect general aspect of vessel.
- Agree loading programme with shore – tank allocation, order in which parcels to be loaded, loading rates, approximate change-over time, etc.
a) Check allocation of ships tanks to receive cargo. Adequate capacity, suitable construction, etc. All valves connected to the loaded tank except load line to be sealed prior to loading.
• In case found that ship’s tanks not totally coated or mild steel, immediately get in touch with principals and head office. Mild steel tanks accepted for carriage of oil up to 2000 NM. In case of mild steel tanks the Letter from the Master to be obtained confirming that the intended voyage will not exceed 2000 NM.
• Heating coils to be of stainless steel construction only, not mild steel.
• No closed blister or loose splits shall be allowed in a coating tank.
b) Check certificate of tank tightness – issuing authority, date, satisfactory report, etc.
c) Check previuos cargo carried in ships tanks.
• If last cargo is ballast find out cargo prior to ballast.
• Master’s Combined Certificate including three last cargo declaration should be compared with Log Book.
• According to FOSFA leaded products shall not be carried as the three previous cargoes. According to GOST 1129 Lead content in SFS oil max 0.1 mg/kg. Non-Poisonous Certificate (Israel) limits 1 mg/kg.
• Gasoline leaded is not accepted. If Master declares any percent of Lead content, vessel to be rejected.
• If instructions detail acceptable cargoes only, in case of any cargo not listed in acceptable list, including Gasoline, vessel to be rejected.
d) Check method employed to clean tanks.
e) Check tanks empty, gas-free and safe to enter. (i.e. sufficient air to support life).
f) Inspect cleanliness of tank surfaces, cross members, shell joints, etc.
g) Check coatings in satisfactory condition.
• Only coatings fit for food grade products and suitable for the carriage of the oils or fats to be loaded shall be used. Zinc silicate coated tanks shall not be used for crude oil unless the acid value is 1 or under.
h) Check fittings functioning correctly, clean where in contact cargo, etc.
i) Inspect internal pipes passing through tank are clean and sound.
j) Check heating coils, flange joints, etc. clean and sound. Subject to live steam working test to ensure there are no blackages. If doubtful insist on hydraulic pressure test. Where not used, they should be disconnected and blanked off from supply and condensate return.
k) Inspect hatch covers seating correctly, packing sound, clamping down arrangements in order. Include sight holes, dip holes, etc., in lids.
l) Check allocation of pipelines for cargo intake, position of deck connections, ship to shore fittings, size of lines, etc.
m) Check allocated line system adequately segregated from other product lines, tanks, etc.
• Oils systems shall not be cross connected to any other cargo system.
n) Check previous cargo handled through line system.
o) Check method employed to clean lines.
p) Inspect lines where accessible, drain low points, air-blow, etc. to ensure no residues or tankwashings remain concealed.
q) If cargo to be loaded overtop, ships lines should be blind-flanged.
r) Check sea cocks are shut and if possible endeavour to check there is no leakage past them.
s) Seal sea cocks shut with identifiable lead, etc., seals.
• No copper and its alloys allow in any constructions or equipment which suppose to be in contact with cargo.
t) If loading into tanks containing already oil from another loading port: draw samples and record ships state: draught, list and ullage / temperatures in respective tanks. Ensure permission is allowed and approved by Principal to load on top.
• Prior to entering of ship's tanks make sure that the same are properly ventilated and safety for the
inspection. Please refer to "Safety oil tanker inspection".
u) Measure and calculate shore tanks quantity using dips, supplied data, temperature, density; check line content, seal all valves.
v) Calculate ship’s quantities ROB (remained on board) as found.
w) Check and calculate ship’s data with V.E.F.
a) Where loading is through ship’s fixed pipework, pressure in this system should be checked to ensure that flexible hoses are not being subjected to excess pressures which might lead to hose burst.
b) Two samples shall be taken at the commencement of loading at origin:
- a line sample at the deck of each cargo loaded,
- a first one-foot sample for each ship’s tank loaded.
Samples to be inspected for clarity, colour, sediment, water, odour.
c) During loading draw samples at regular intervals from jetty-head pipeline and check these show no visible change in quality.
d) Intermediate tank dips / ullages of ship’s tanks should be taken at regular intervals during the loading and calculated to tonnage.
e) Pre-shipment samples to be drawn from nearest practicable point to the ship’s rails for each tank loaded in 5 sets as per FOSFA 53 or 5 composite samples as per FOSFA 54, if required. Samples should be sealed and labelled as per FOSFA requiremets.
f) Record all routine events in chronological order.
g) Record any occurrence with brief explanation and cross reference to detailed information relating to them.
h) Take measurement of quantity ex delivery vessel at regular intervals.
i) Take measurements of quantity into receiving ships tanks.
j) Reconcile quantities delivered against received.
k) Calculate and evaluate rate of loading.
l) Check liquid level in ship’s tank approaching pre- determined ullage.
m) Check pipeline connections into next ship’s tank.
n) Check opening up into empty ships tanks.
o) After flow checked, ease down and close full ship’s tank.
p) Top up full ship’s tank to pre-determined ullage.
q) Check temperature of oil at jetty-head is within limits agreed with shore installation for heating, where applicable.
r) Check temperatures of oil in ship’s tank is within limits agreed with ship for heating.
s) To avoid local burning around steam coils ensure coils are not hot prior to loading.
a) Clear ship to shore connection by air-blowing, etc., either forward into ships tank or back beyond jetty-head fixed pipeline valve.
b) Where connection is flexible, lift and drain hose.
c) Ullage ships tanks and where necessary indicate ullage reference point.
d) Test for free water with water detector.
e) Take temperatures of ships tanks.
f) Calculate ships figures for comparison with shore figures and with ships figures on arrival at port of discharge.
g) Draw and, if possible, seal contamination samples from ships tanks jointly with ship’s representatives. If no seal available obtain masters stamps and signature on sample label.
h) Where required seal ships line valves with identifiable lead, etc., seals.
i) Where required also seal hatches, dip hole covers, etc.
j) Record ships state: draught, list and other relevant details.
k) Check heating instructions placed on board.
l) Check shipping samples placed on board.
m) Check ullage report placed on board.
n) Check any other document, etc.
o) To draw 5 representative samples from each ship’s tank as per FOSFA 54
(General ISO 5555), if required. Samples to be sealed and labelled as per FOSFA requirements.
p) To hand over 2 sealed samples from ship’s tanks to the Ship’s Master against receipt unless instructed otherwise.
• IMPORTANT: Winter time measurement in the tanks to be performed at least after 1 hour after completion of loading due to low temperature of oil.
a) If left full, calculate contents of shore pipelines.
b) If cleared back to tank by air blowing, pigging, etc., check drains, etc., to ensure line empty and reconcile capacity with amount received back into tank.
c) Gross dip shore tanks provisional / final.
d) Check free water unchanged.
e) Measure temperatures – provisional / final.
f) Check all specific gravities / densities for possible contradictions.
• Calculate delivered quantity:
- the loaded weight according to Bill of Lading
- the loaded weight according to gauging shore’s tanks before and after loading
- the loaded weight according to gauging ship’s tanks on completion of loading (with / without Vessel’s Experience Factor)
Notices of Protest:
a) Lodge notes of protest in respect of apparent loss, damage, etc., to ship, shore installation, etc.
b) Lodge notes of protest in respect of delays, stoppages, etc., to ship, shore installation, etc.
c) Notice of Apparent Discrepancy must be issued to the Vessel and Oil Base terminal separately (copy to the Client and Head Office) in case the discrepancy between ship and shore tanks measurements are found to be 1.0 mt or more (up tp 0.5 %), unless instructed otherwise.
d) Letter of Protest must be issued to the Vessel and Oil Base terminal separately (copy to the Client and Head Office) in case the discrepancy between ship and shore tanks measurements are found to be more than 0.5 %, unless instructed otherwise – SEE MEMO.
Advices to discharge ports:
- shippers’ name
- b/l numbers / weights
- stowage particulars
- vessel’s draught, list and tank ullages, temperatures
- other important details useful for discharge
- whether under FOG / CC or ordinary superintendence at port of discharge.
Before vessel’s arrival:
- contact buyers / receivers
- contact vessel’s agents
- study loading details and compare with supervision order
- check differences
Receiving to shore tanks by volume:
a) If shore tanks empty, check allocation of shore tanks to receive intake, adequate capacity, suitable construction, etc.
b) Check commodity last stored in tanks.
c) Check method employed to clean tanks.
d) Check tanks empty, gas-free and safe to enter.
e) Inspect cleanliness of tank surfaces, shell and bottom plate joints, etc.
f) Check heating coils, flange joints, etc., clean and sound. Subject to live steam working test. If doubtful insist on hydraulic pressure test.
g) Check main shell manholes securely boxed up.
h) If shore tanks partly filled, dip gross, check dip pattern with regular shore personnel.
i) Test for free water and dip.
j) Take tank temperatures.
k) Draw samples from shore tanks for specific gravity / density test and reference.
l) Check pipelines segregated and reported condition: full or empty.
m) Check installation interconnector and jetty pipelines segregated and reported condition: full or empty.
n) Check pigging facilities.
o) Check pipeline lengths and capacities in installation records.
p) Where pipelines reported full, sample and visually examine contents and have pipeline pressed up before commencing discharge, possibly stop discharge after a few minutes and measure shore and ship’s tank to compare delivered quantity with theoretical line capacity.
q) Where pipelines reported empty, check last product through the line, methods used to clean line, inspect drains and open ends where accessible, if pigging facilities, have pig passed through line.
r) Check flexible hoses contruction suitable, materials compatible, for conveying product at
s) Check last product through flexible, method of cleaning, etc., and inspect for cleanliness.
t) If receiving through weigh scales, check method of charging and discharging weigh scales tanks.
u) Check that scales, when empty, is balanced at zero reading.
v) Check time of full sequence – filling weigh tanks, stabilizing and weighing, discharging.
w) Arrange full time / part time attendance at weigh scales and access to weight tickets for record weights.
x) If part time attendance make spot checks.
y) Depending upon size of weigh scales tanks and number of weighings to complete throughput, arrange draw samples from weigh tanks. Where larger scales are concerned it is usual to draw a sample from each full weighing tank.
z) Independently check shore tank for free water and visually check weigh tanks to ensure no water present.
Receiving to barges
a) Check existence and authenticity of calibration data.
b) Check allocation barge tanks to receive cargo. Suitable construction, adequate capacity allowing for stability of barge, etc.
c) Check previous cargo carried in barge tanks.
d) Check method employed to clean tanks.
e) Check tanks empty, gas-free and safe to enter (i.e. sufficient air to support life).
f) Inspect cleanliness of tank surfaces, cross members, shell joints, sumps, etc.
g) Where applicable ,check heating coils, flange joints, etc., clean and sound. If necessary subject to live steam working test and if doubtful, insist on hydraulic pressure test.
h) Check last product handled through barge lines.
i) Check method employed to clen lines.
j) Visually inspect suction riser, deck manifold, etc, for cleanliness.
k) Check deck maniholds connecting tank suctions, etc. are segregated by valves or blanks.
l) When barge tanks have been allocated to receive products, agree quantity eith lighterage operator on the site and calculate these quantities in the form of stop dips on each tank.
Receiving to road / rail vehicles:
a) Check each vehicle tank construction suitable, total capacity and compartment sizes.
b) Check estimated time of presentation of empty vehicles.
c) Check previous load carried in vehicle tanks.
d) Check method employed to clean tanks.
e) Check tanks empty, gas- free and safe to enter.
f) Inspect cleanliness of tanks, fittings, etc.
g) Where applicable check heating coils clean and sound and if necessary subject to test.
h) Check foot valves, line systems, maniholds, pumps, outflow valves and caps, etc.
i) Check hatch covers, dip hole covers, etc. seating correctly.
j) Check track / platformscales to be clear of any obstacles and balanced at zero. Check date of last calibration. Detail other persons attending. Jointly sign weighing data.
k) Tare weigh vehicle prior to loading (uncoupled and unmanned).
l) Gross weigh vehicle after loading (uncoupled and unmanned).
m) Check no equipment changes, bunkering, etc., between gross and tare which would affect net weight of load.
n) Check with water detector or, in case of articulated sloping tank vehicles, low point outflow for free water.
o) Sample each compartment of vehicle separately.
p) Visually examine sample for physical condition – clarity, colour, sediment, moisture, etc.
q) If no apparent quality deviation – usual to make up average sample across vehicle tanks to represent whole vehicle.
Upon vessel’s arrival:
a) Contact Master.
b) Compare stowage.
c) General inspection (hatches, stowage, cargo condition).
d) Cleanliness of discharge equipment.
e) Record loaded details:
- loading port, time / date of loading, etc.,
- ship’s state – draught, list, other relevant details,
- ship’s tanks – ullages, free water, temperatures,
- ship’s figures after loading.
f) Claim or sight following:
- extract from ships heating log,
- shipping samples,
- any other documents carried in ship’s bag.
g) Agree with ship and shore installation discharge sequence, discharging rates, approximate change-over and finishing time, etc. If through ship’s and fixed shore lines, priority should be given, wherever possible and subject to safety of vessel and obtaining maximum discharge cargo, in following order:
- human consumption to industrial (unless lines previously in industrial thereby avoiding unnecesssary waste).
h) Stop dips / ullages – If only part cargo to be discharged from a ship’s tank, ullages or dips to be calculated to measure amount to be left on board.
i) Receipt to shore tank – on the basis of ship’s specific gravity, temperature, etc., an approximate quantity into each shore tank should be calculated, allowing for pipeline clearing, etc., and stop dips issued for each shore tank.
j) Check seals intact and note identification on tank valve seals and sea cock seals, etc.
k) Record ship’s arrival state: draught, list and other relevant details.
l) Ullage ships tanks and where necessary indicate ullage point.
m) Test for free water with water detector.
n) Check steam returns of the heating coils for any possible leakage in system.
o) Take temperatures of ship’s tanks.
p) Calculate ship’s figures.
q) Record any inter-tank transfers between loading and arrival.
r) Compare ship’s loaded quantities with arrival quantities. Discrepancies must be investigated.
s) Draw samples from ship’s tanks, jointly with vessel’s representatives. Compare visually with shipping samples. Apparent differences must be investigated. Issue Letter of Protest immediately. Make all interested parties aware. In case of contamination call in average agents.
t) Contaminated material should be pumped to separate receptacle/s. Determine percentage of excessive moisture subsequently enabling you to deduct same from total quantity of contaminated material delivered.
u) Check allocation of pipelines for cargo discharge, position of deck connections, ship to shore fittings, size of lines, etc.
v) Check allocated line system adequately segregated from other product lines, tanks, etc. and any flexible hoseproperly connected and adequately supported by shore hose handling gear and / or ship’s derrick.
w) Check last product through lines with reference to way in which ship was loaded.
x) Where product change involved, check method employed to clean lines.
y) Inspect lines where accessible, drain low points, air-blow, etc.
z) Check allocation of pumps for cargo discharge, type, capacity, pressure rating, etc.
aa) Check pumps adequately segregated from remainder of ship’s pumping system, lines, etc.
bb) Check reported condition of pumps: full of product or empty and clean.
cc) Where pumps reported in product, sample and visually examine contents.
dd) Where pumps reported empty and clean, check last product through pump, methods employed to clean pump, inspect drains and connections where accessible. If necessary, have cover plates etc., removed to inspect.
ee) Do not allow start pumping before oil has reached adequate temperature to be pumpable throughout discharge.
a) If possible take off initial pumpings into drums at jetty head or discharge into shore slop tank.
b) Check initial pumpings by taking samples from shore pipelines.
c) Visually examine samples for physical condition – clarity, colour, sediment, moisture, taste and odour where applicable.
d) Maintain low rate of discharge until shore tank bottom covered. After about 1 foot cover tank bottom, draw sample.
e) If laboratory facilities available, it may be possible to conduct a short contamination test but at least visually inspect samples both when hot and cold.
f) If all in order, increase pumping rate.
g) During discharge, draw samples at intervals from shore pipelines and check these show no visible change in quality.
h) Record all routine events in chronological order.
i) Record any untoward occurrences with brief explanation and cross reference to detailed information relating to them.
j) If discharge interrupted for the night or otherwise for any length of time, take intermediary tank measurements on leaving ship and again prior to resuming discharge operations.
k) Take measurements of quantity into shore tank at regular intervals.
l) Calculate and evaluate rate of discharge.
m) Regularly check pumpability of oil and make sure sweepers / puddlers will enter tanks in sufficient time to achieve good discharge.
n) Clear oil from tank sides with wash back hose or squeegee. Puddle bottom residues and squeegee towards suction. Where applicable arrange loose collection and packing of unpumpable residues.
o) Where possible drain ship’s tanks as discharge progresses in order not to allow solidification.
Completion of pumping.
a) Clear ship to shore connection by air-blowing, etc., from ship to beyond jetty-head fixed pipe-line valve.
b) Where connection is flexible, lift and drain hose.
c) Inspect ships tanks whether well squeegeed (meaning swept out of all contents) and empty, but do not certify “empty”. State “safisfactorily darined of cargo”, instead.
d) After final completion of discharge from all tanks re-inspect all tanks and pumps to check that no accidental refilling has occurred.
e) If residue remains on board, draw samples and assess and agree quantity including clingage over and above normal skinloss jointly with receivers and vessel’s representatives and qualify “certificate of emptiness” accordingly.
f) If only part discharge, take ullage, free water and temperatures of oil remaining on board, by deduction estimate ship’s quantities discharged and record ship’s state: draught, list, other relevent details, reseal valves, etc.
g) If shore pipelines left full, calculate content.
h) If cleared back to tank by air-blowing, pigging, etc. check drains, etc., to ensure line empty and reconcile with amount received back into tank.
i) Provisional – gross dip shore tanks.
j) Provisional – measurement of free water.
k) Provisional – measurement of temperature.
l) Draw final samples for density / specific gravity and quality, where applicable.
m) Allow 24/48 hours settling time for stabilizing surface movement, dispersal of entrained air, breakdown of surface froth, precipitation of moisture, etc. before taking final measurements (volume and temperatures). Beware of foots which may have settled and more or less solidified at tank bottom.
Shortage / Damage
a) Hold ship’s agents, shipowners, carriers responsible in writing, not later than the working day after the day when the goods were handed over to the consignee, specifying the general nature of loss or damage, i.e.:
- leakage / accidental losses,
b) In case of accidental loss / contamination make sure surveyor / average agent called in by B/L holder / insurance policy holder. If not, check with office whether or not to appoint him for account of whom it may concern.
c) Inform ship or ship’s agents of surveyor appointment in order survey to be made joinly with parties concerned.
d) If additional supervision expences necessary and made in agreement with surveyor make sure such expences mentioned in survey report enabling assured to collect from underwriters.
e) If clients are contractually responsible for quality / condition of oil, keep them informed of details about quality / contamination claims.
f) If FOG / CC applying, keep informed about shortage / accidental loss claims.
Counter singning of documents:
Inspector may counter sign the Ullage report. If required, it is essential he conters signs with any necessary remarks such as “above figures calculated with / without VEF” or remarks on any other matters in dispute. In these case inspectors signs “acknowledged only” and add remarks as necessary. If matter serious inspectors issues separate Letter of Protest or Reserve.
Tank Cleanliness report should be signed “for receipt only”.
Daily information to the Client:
a) Client to be daily informed of the progress of our intervention.
b) All messages below to be copy to Oils & Fats Department. In the subject the following info to be mentioned: name of the Principal / Client, goods and quantity, port of loading and discharge, name of the vessel.
• 1st message (after receipt of the order/instructions)
Acknowledgement of the receipt of the order/instructions + confirmation of your attendance at loading/discharge of the above vessel in ……
• 2nd message (before berthing of the vessel)
Goods already stored-ready for loading / goods not ready
Vessel due to berth on ………….
• 3rd message (just after the beginning of loading/discharge)
Vessel berthed on ……....at ……….
NOR accepted on ……. at …….
Pumping started on …….. at ………
• 4th message (after completion of loading/discharge + sailing of the vessel)
Statement of facts
• Other messages
• Reports or certificates to be issued within 48 hours after obtaining all necessary information.
• Reports / certificates to be not issued without authorization .
• Debit notes to be received not later than 3 weeks upon completion of the inspection / analysis.
Whenever instructions are not clear or in case of incidents/accidents, please immediately inform/contact.
5.3 Joint sampling / sealing of ship’s / rail tanks.
Upon instructions received from the Principals for joint sampling or sealing of ship’s / rail tanks, all the parties attending of the inspection to be informed in writing by a letter. This letter shall be countersigned by all the parties attending.
5.4 List of documents required:
Bill of Lading
Time Sheet (copy from Shipping Agent)
Certificate of Ship’s Compliance and Cleanliness and Suitability of Ship’s Tanks (3 originals)
Heating Instructions signed by the Ship’s Master (3 originals)
Combined Masters Certificate (3 originals)
Letter of Protest, if necessary
Copy of Tally Time Sheet
• In the Certificate of Ship’s Compliance and Cleanliness and Suitability of Ship’s Tanks the following wording to be mentioned:
“All information in the Combined Master’s Certificate obtained from the vessel’s representative is the sole responsibility of the vessel.”
7.1 Extracts from FOSFA code of Practice for Member Superintendents
Ship’s Tank – Fitness and Cleanliness
Investigate (including inspection of ship’s log) and report on previous three cargoes and method of cleaning after last cargo, including note of chemicals used in cleaning. Such report to be counter-signed by the owners, Master or authorised agent. Acceptability of tank with or without further specific testing and cleaning to be checked against current contract terms and categorised product lists, as may be currently issued by FOSFA International. Where such review requires specific testing and cleaning, this can only be progressed by the superintending organisation where specialist operatives are available and specialised laboratory facilities close at hand.
Otherwise, if tank empty, safely accessible, gas-free, etc., inspect walls, bulkheads, bottom for cleanliness and surface condition, coated or otherwise. Check no internal fittings of copper or copper alloy.
Report on condition of tank coating. Report on residues, loose scale, hardened product adhesion to cross-members, etc. Where chemical cleaning has taken place, it is essential to check for residual chemicals. Report on any unusual foreign odour, identify if possible. Where not accessible, a very limited inspection can be made from deck manholes. If the condition of tank unacceptable – reject.
Mobile Tanks – Cleanliness
External and internal condition and state of cleanliness and dryness should be readily inspected. Although requirements generally similar to those applying to ships and shore tanks, the nature of their application, particularly road vehicle tanks, is such that they can be cleaned quickly and effectively.