Decree of the Czech Office of Labour Security and the Czech Mining Office No. 92 / 1985 Coll.
Decree of the Czech Labour Safety Authority and the Czech Mining Office on ensuring safety of work with stable bulk containers
Valid
Effective from 01.01.1986
92
DECLARATION
Czech Office for Safety of Labour and Czech Mining Office
of 25 October 1985
on ensuring safety of work with stable bulk containers
The Czech Labour Safety Authority provides, pursuant to § 5 (1) (d) of Act No. 174 / 1968 Coll., on State Professional Safety Supervision, and the Czech Mining Authority pursuant to § 57 (1) (d) of Act No. 41 / 1957 Coll., on the Use of Mineral Wealth (Upper Law), and under § 10 (a) of the Czech National Council Act No. 24 / 1972 Coll., on the Organisation and Extension of Surveillance of State Mining Administration, in agreement with the relevant central authorities:
Preliminary provisions
Scope
The decree covers organisations and their personnel in the design, manufacture, operation, operation, operation, maintenance, repair and reconstruction of fixed bulk containers.
Interpretation of terms
(1) The fixed bulk containers provided for in this Decree are permanently or temporarily built over the ground, under the ground or below the floor level with an internal horizontal diameter of at least 1000 mm or with a non-circular cross-section of which the diameter of the inscribed circle is at least 1000 mm, in which bulk materials of more than 1500 mm may be stored ("containers"); They shall not be considered to be storage tanks resulting from mining works in natural rock structures.
(2) bulk materials are those which consist of individual particles and have no consistency other than friction-induced cohesion; their quantity shall be indicated by volume or weight.
Construction and manufacture of containers
(1) The shape, dimensions, structural material and work1) of the containers must correspond to the characteristics of the bulk materials stored (in particular due to their tendency to self-ignite, chemical reactivity, aggressiveness) and must be chosen with a view to avoiding or reducing as much as possible the dust of the working environment and noise levels. 2) At the same time they must ensure their uniform emptying either automatically or by means of technical devices (vibrator, pneumatic pads, aeration agents, mixers, etc.).
(2) The construction of containers for flammable bulk materials must be made of non-flammable material. The outer shell of these containers shall be of non-combustible material or shall be coated with a protective coating against fire from the outside. By testing the flammable content, the external shell thus modified shall have a degree of flammable in Group C1 - hardly flammable. (3) The effectiveness of the protective coating of the container shall be demonstrated by the organisation responsible for its operation (hereinafter referred to as "operator ') by a record of the test of flammable properties.
(3) Stocks intended for storage of bulk materials which may result in sudden pressure increases (e.g. explosion) during their operation must be equipped with a device enabling the release of the pressure wave (e.g. explosive valve, burst membrane) into a safe area.
(4) A device capable of producing an explosion shall not be fitted to bulk containers.
(5) Vapour storage tanks which freeze low temperatures and are also intended for operation during the freezing period must be equipped with an appropriate device to prevent or, where appropriate, to prevent their freezing.
(6) Bulk storage tanks where there is a risk of lifting vaults even in the prescribed way of storage must be equipped with a device to upset vaults, funnels and overhang; the device must be secured against overload (e.g. by slip coupling, staple element, heat protection of the engine) and against endangering persons or equipment with broken or fallen components.
(7) The upper edges of the hopper for manual loading shall be rounded.
(1) The position, shape of the controls and the forces required to control them shall comply with ergonomic requirements. Drivers must be always accessible and their purpose and function permanently and clearly marked with symbols or inscriptions in the Czech or Slovak language.
(2) The main switch of the electrical equipment of the containers shall be capable of being secured in the off-mode position.
(3) Containers in which all functional and handling points are not directly visible from the control point must have appropriate signaling to alert workers to bring the equipment into operation, to stop it, to fail and so on, and must have retroactive signalling to the control point. Sound signalling shall exceed the ambient noise by at least 10 decibels and shall be frequency distinct from it.
Floors, platforms, footboards, staircases and ladders
(1) The operating, installation, dismantling and maintenance workspace floors shall be flat, undamaged and not slippery. The external platforms, footboards and staircases shall be so constructed that dust, mud, water and other substances do not accumulate on them (e.g. from a grate).
(2) For service and control posts above the level of the floor, platforms or bridge shall be set up at least 500 mm wide with an underpass height of not less than 2100 mm. Exceptionally, the underpass height may be reduced locally to 1900 mm, except for the operating site. In such cases the reduced positions must be adjusted appropriately (oblique linings, elastic linings, etc.) and coloured.
(3) Stairs must lead to platforms and footboards, specially fixed ladders.
Covers and fences
(1) Covers and fences shall:
(a) prevent access to sources of danger, dangerous contact or capture of persons and parts of their clothing;
(b) to protect persons and equipment against falling, departing or scattered bulk materials;
(c) prevent the fall of persons;
(d) prevent unwanted intrusion of foreign objects into mechanisms or equipment;
(e) reduce noise, reduce dust and prevent spatter.
(2) The size and shape of openings in shelters and fences must be chosen taking into account the distance between the source of danger from the cover, structure and size of the material stored and the possibility of forfeiting persons or objects.
(3) Covers and fences must be secured against spontaneous release.
Inputs and openings into containers
(1) Inputs into storage tanks and access openings must be secured by locking bars or lids which must be locked during operation. The locking of bars or lids may replace the locking of doors into a room (space) at the containers, which is used only to enter the containers.
(2) The bars which need to be moved for operational reasons, but which do not serve as communication, must not have openings whose dimensions are more than 60 mm and their strength must correspond to operating conditions.
(3) Grid openings with a crossing ban may have dimensions greater than 60 mm, but not more than 300 X 300 mm.
(1) The openings for entry into containers shall not have any dimension of less than 700 mm.
(2) No outlets or other components may interfere with the inlet space.
Space conditions
The passage profiles under the containers shall comply with the provisions of the specific regulations. 4) However, this does not apply to containers located outside or on roads reserved for a particular type of means of transport (e.g. narrow track, special means of transport); appropriate safety marks shall be affixed to these containers.
(1) The containers from which bulk material is carried by vehicles must bear the largest dimensions of the vehicles allowed to pass; the following minimum distances shall be maintained between their largest contour and the nearest structures:
(a) 600 mm for a single obstacle of less than 300 mm (pillar, pillar, track, etc.);
(b) 750 mm for continuous obstacles (wall, ramp, ceiling, etc.).
(2) The obstacles must be marked with a safety colour.
(3) The workspace at the storage tanks shall be arranged in such a way that workers can quickly withdraw from the vulnerable area in case of danger.
Discharge holes and container closures
The shape and dimensions of discharge holes shall correspond to the characteristics of stored bulk materials and shall be secured against entry into the container during operation.
(1) The type of container closure shall correspond to the required function, environment, properties of stored bulk materials and operational requirements. The seals shall be easily controllable and allow the bulk material to be moved and the container to be emptied.
(2) The seals shall be so designed as to permit the removal of the closing element without disassembly of the motor drive and replacement of the drive at the closed passage of the stored bulk material. If the design allows the removal of the closing element without disassembly of the motor drive, it shall be prohibited to disassemble during operation.
Control of emptying of the container shall be ensured from the control point. The cap or its triggering device shall be adjusted or located in such a way that unauthorised persons cannot handle it.
Obligations of the manufacturer (supplier)
(1) The manufacturer (supplier) is required to label the container permanently in visible place with the following information:
(a) the manufacturer (supplier);
(b) year of manufacture (construction), production number,
(c) energy used to drive the container aggregate;
(d) the maximum permissible mass and the volume of bulk material to be stored.
(2) The container which is part of a technological installation may bear the marking referred to in paragraph 1, together with other data on that installation.
(1) With each container, the manufacturer (supplier) is required to supply accompanying technical documentation containing in particular:
(a) technical parameters and description of the container;
(b) the type and characteristics of the material for which the container is intended to be stored;
(c) dates and scope of inspections, maintenance and periodic repairs;
(d) operating instructions, ordered and prohibited handling,
(e) the measures necessary for proper and exceptional entry into the container;
(f) the method of fire protection laid down with regard to the material stored and, where appropriate, the fire-fighting action including the identification of types of fire extinguishers.
(2) If the container is part of a technological device, the accompanying technical documentation referred to in paragraph 1 may be part of the accompanying technical documentation of the whole technological equipment.
Operators' obligations
(1) The operator shall identify in writing the worker responsible for the operation and technical condition of the containers (hereinafter referred to as the "responsible worker") and the staff to be operated.
(2) Stocks may be operated by mentally and physically competent workers (5) over 18 years of age, theoretically and practically trained and mandated to operate the containers (hereinafter referred to as "operators"). Training and verification of the knowledge of operators shall be carried out by the operator in accordance with this Order and the instructions given in the operator's instructions at least every two years. The operator shall keep records of the training and verification of knowledge.
(1) An operator is required to draw up, in accordance with the accompanying technical documentation, this Regulation and the rules for ensuring safety and health at work and taking into account its own operating conditions, the operating rules in which it provides for:
(a) the duties of responsible personnel, operators and personnel performing maintenance, repair and inspection of containers;
(b) the dates, scope and manner of inspection, maintenance, cleaning, repair and emptying of containers;
(c) dates for inspections, revisions and tests of technical equipment of containers;
(d) the conditions for entry into containers, the working procedure, the way in which the workers are signalled and secured;
(e) measures to ensure safety of work in a harmful environment;
(f) conditions of emergency work in an environment with increased risk;
(g) the way in which workers and workplaces are secured in the maintenance and repair of containers and during work breaks;
(h) the location of the replacement key from the entry into the containers.
(2) The operator shall draw up a fire rules for the operation, operation and maintenance of storage tanks in accordance with the provisions of Section 15 (1) (f).
In order to ensure the safe operation of storage tanks, the operator shall:
(a) to ensure the lighting of containers, their accessories and surroundings;
(b) identify the type, meaning and use of warning signs and inform the relevant staff;
(c) identify the sources of danger by means of safety colours, marks and tables;
(d) identify the worker to whom the key to bars and entrances is entrusted;
(e) equip the workplace with first-aid pharmacies and ensure that in each working shift there is a worker who controls the principles of first-aid provision;
(f) keep an operating journal of the maintenance, operation, cleaning, defects, repairs, inspection results (including the measures proposed to address the deficiencies identified), the output and return of the wrenches from the grates and through the magazine's passages and emergency incidents and measures; for groups of containers of the same type concentrated in one workplace - a production line is sufficient to keep one diary,
(g) check the container and its accessories before any entry into service;
(h) roll together the stored bulk material around the filler openings of deep-sea containers and containers located below the floor level only 1500 mm above the surrounding ground or floor level;
(i) to provide initial and periodic medical examinations of operators;
(j) in the event of an emergency, make available to workers emergency personal protective equipment and work equipment, depending on the nature of the bulk materials and operations stored;
(k) ensure inspection of containers, including their technical equipment, at the dates specified in the operating rules;
(l) in the event of detection of a defect which threatens the safety of workers, remove the container immediately until the fault has been removed;
(m) if defects are detected on bars, take measures to prevent workers from falling into the reservoir until they are removed;
(n) in view of possible self-ignition, keep checking the properties of stored bulk material.
Obligations of staff
(1) It is prohibited
(a) bring the container into operation
1. if there are workers inside,
2. prior to reception of the return signal (§ 4 (3)),
3. if the safety equipment is damaged or disabled; or
4. if other defects have been identified to the safety of workers or equipment;
(b) recharge the container or fill it in a manner specified by the manufacturer;
(c) use safety devices as operating controls;
(d) deactivate security and communication devices, damage or improperly remove security signs and tables;
(e) to clean, repair, adjust or lubricate functional and movable parts of the container in their operation, unless the container is designed for such a process;
(f) staff without a prescribed qualification (§ 16 (2)) to operate the container and its technical equipment;
(g) to enter places which are not work spaces and roads, to crawl or climb the railings of work crossings, platforms, catwalks and other enclosed spaces;
(h) to stay in designated hazardous areas and enter the container without permission;
(i) release the discharge hole to release the cut-off material;
j) enter the container through the discharge hole if the container is not empty,
(k) control the cap of the container from the loading area of the means of transport on which the contents of the container are emptied;
l) dismantle the closure element of the unempty container.
(2) Before filling the container with loose material, the operator must check the status of the lid and grates, in particular whether individual bars of the grates are broken and whether the caps and bars are locked.
(3) Before leaving the workplace, the operator must provide the container and its equipment by an unauthorised person before starting up.
(4) When filling vehicles or transport equipment at the container, the worker must settle bulk material from a safe place of equipment for that purpose.
(1) Only a responsible official may allow entry into the container to determine the working procedure in accordance with the operating rules and to record it in the operating log; in the case of rescue work, make a supplementary entry in the diary.
(2) Before entering the container, the responsible worker must ensure
(a) stopping the supply and collection of bulk material;
(b) a container against putting into service as specified in the operating rules;
(c) the marking of the container by a safety mark indicating that the inside of the container is being operated;
(d) opening the container and securing the open protection grid against fall,
(e) the examination of the presence of hazardous substances in the container and, accordingly, the equipment of the entrant by means of a breathing apparatus, safety lamp, fire-resistant suit, etc.,
(f) re-checking the device enabling entry into the container.
(3) Every worker's entry into and stay inside the magazine must be provided with at least two additional staff trained for the job. The worker entering the container must be fitted with a protective harness (6) and handcuffed by a securing rope.
(4) Entry into the smelting bulk container is only possible in exceptional cases; it may be authorised only after the necessary security measures have been taken.
(1) When removing defects in the container (vaults, sinuses, fungi, overhangs), the responsible worker must manage the work and pay particular attention to:
(a) to enter the container by means of fixed continuous ladders or lifting devices (platforms, baskets, cages, gangways, etc.) or by means of a portable ladders, if it is possible to hang it firmly inside the container and to ensure in this position,
(b) that the worker within the container does not reach deeper than one metre below the limit of the excess of bulk material or funnel produced by him and does not enter the stored material;
(c) that the safety line is still tight and secured by authorised personnel;
(d) that the workers inside the container are kept in constant contact with the agreed signs.
(2) After the work is completed inside the container, the responsible worker will lock the grate or lid of the container opening.
Safety belts and harness, (6) additional and safety ropes, or other personal protective equipment, shall be stowed in the prescribed manner. After each use, these devices must be cleaned, dried and put into a usable state. Regular inspections and tests shall verify their reliability.
Transitional provisions
(1) In the case of containers put into service before the entry into force of this Order, the operator must, within six months of the entry into force of this Order:
(a) to draw up the operating and fire regulations referred to in Article 17;
(b) indicate permanently in visible place the type and maximum permissible weight and volume of bulk material which can be stored in the container;
(c) to implement alternative measures to ensure the safety of work, where it cannot be adapted for technical reasons in accordance with the requirements of this decree.
(2) If the openings for entry into service of containers are of a smaller size than 700 X 700 mm prior to the date of application of this Decree and their additional enlargement would result in a breach of the statics of the containers, they will be left in the original dimension provided that their dimension is at least 500 X 500 mm.
Repeal
The Order of the Czech Labour Safety Authority No. 22 / 1976 Coll., on ensuring the safety of work with stable bulk containers is hereby repealed.
Efficacy
This Decree shall take effect on 1 January 1986.
Chairman of the Czech Mining Office:
Ing. Zíka v. r.
Chairman of the Czech Labour Safety Authority:
Dr Bartek v. r.
1) ČSN 73 5570 Design of container structures. ČSN 73 1701 Design of wooden construction structures.
2) § 5 et seq. of Decree of the Ministry of Health of the Czech Republic No. 13 / 1977 Coll., on the protection of health against adverse effects of noise and vibration.
3) ČSN 73 0862 Determination of the degree of flammable materials.
4) ČSN 73 5105 Manufacturing industrial buildings.
5) Directive No 49 / 1967 of the Ministry of Health of the Czech Republic on the assessment of medical fitness for work, as amended by Directive No 17 / 1970 of the Ministry of Health of the Czech Republic (reg.
6) ČSN 83 2611 Protective belts and harness.
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Regulation Information
| Citation | Decree of the Czech Office of Labour Safety and the Czech Mining Office No. 92 / 1985 Coll., on ensuring safety of work with stable bulk containers |
|---|---|
| Regulation Type | - |
| Author | - |
| Collection | Code of Laws |
| Date of Promulgation | 13.11.1985 |
|---|---|
| Effective from | 01.01.1986 |
| Effective until | - |
| Status | Valid |
The regulation text is for informational purposes only.
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