Joint Storage
Basic rules
(1) Hazardous substances may only be stored jointly if this does not increase the risk.
(2) In order to define the possibilities for joint storage, hazardous substances are assigned to storage classes in these technical rules. Their only purpose is to control the joint storage of substances. Storage classes must be defined according to the procedures stipulated in Annex 4.
(3) Separate storage means separating different stored substances in different warehouse areas of the same warehouse sector by sufficient distances or using barriers (e.g. walls, cabinets made of non-combustible materials, products made of non-combustible substances of storage class 12 or 13) or by storing them separately in structurally separate containment areas.
(4) Separate storage within one warehouse sector may be necessary in order to reduce hazards related to specific stored substances of the same storage class or substances of different storage classes. This can be achieved by sufficient distances or by barriers (e.g. walls, cabinets made of non-combustible materials, products made of non-combustible substances of storage class 12 or 13) or by storing them separately in separate containment areas. Indications for the need to store substances separately may result from, for example:
1. danger features and safety indicators that supplement the risk indicators (R- and S-phrases and/or H-, EUH- and P-sentences) of the marking (this applies in particular to R29, R31, R32, S14, S17, S50, EUH014, EUH029, EUH031, EUH032, P220, P223 and P420) and
2. product-related safety information, such as:
a) safety data sheets (No. 5 Fire fighting measures and No. 7 Handling and Storage; less detailed are data in Safety Data Sheet No. 10 Stability and Reactivity) as experience has shown, or
b) information leaflets issued by the accident insurance funds (example: cyanides shall not be stored jointly with substances – e.g. acids – with which they may produce hydrogen cyanide).
(5) Separate storage means storing substances separately in different warehouse sectors with a fire resistance rating or capability of at least 90 minutes. (
(6) Derogations from joint storage rules are allowed, provided that:
1. no more than 400 kg of hazardous substances are stored of which max. 200 kg may belong to one storage class,
2. hazardous substances of up to 200 kg are additionally stored in a warehouse for storage classes 6.1 C, 6.1 D, 8A, 8B and 10 to 13, and
3. there is no need to fear an increase in the risks encountered.
(7) Stored substances of different storage classes must not be stored in the same warehouse sector if the joint storage table pursuant to No. 7.2 prescribes separate storage in different warehouse sectors with a fire resistance rating or capability of at least 90 minutes (separate storage).
(8) Stored substances from the same storage class or stored substances from different storage classes for which no separate storage is prescribed, must also not be stored jointly if this can cause a substantial increase in risk. This is the case if they, for example:
1. require different extinguishing agents,
2. require different temperature conditions,
3. react with each other while producing flammable or toxic gases or
4. react with each other while causing a fire.
(9) In individual cases it is possible to deviate from the rules in the joint storage table on account of suitable fire protection concepts or risk assessment results.
(10) Exemptions from the rules for joint storage are permissible regarding the storage of hazardous substances in railway tank wagons certified according to dangerous goods rules or tanks on closed company premises if
1. this does not increase the risks,
2. the storage period does not exceed three months,
3. the transport containers are not opened during this time (they may be opened briefly solely for sampling purposes, taking account of the protective measures required for this activity), and
4. the transport containers are regularly, at least daily, inspected to see whether they are kept in good condition.
(11) Joint storage prohibitions shall not apply if packed hazardous substances are kept ready for transport in closed freight containers, e.g. in container berths and in container terminals, and if the closed freight containers are not stacked vertically or placed directly next to each other, and provided the rules for joint storage in the Dangerous Goods Ordinance Road, Railway and Inland Waterways are observed. This requirement shall be deemed to have been complied with if the minimum distance is 0.5 m in all directions.
Joint storage table
(1) The Joint Storage Table (Table 2) indicates for each storage class: whether joint storage with any of the other storage classes is allowed in principle; whether separate storage in different warehouse sectors with a fire resistance rating or capability of at least 90 minutes is present; or whether a restriction for joint storage must be observed (e.g. separate storage required in the event of storage in different warehouse areas in the same warehouse sector). (The Joint Storage Table also includes stored substances that do not come under the scope of application of these technical rules.)
(2) For the purpose of this joint-storage concept, combustible materials shall be stored substances to which no physical hazard is assigned pursuant to the CLP Regulation but that are known from experience to be combustible.
Table 2: Joint storage table according to storage class, explanations see subsequent pages
| Storage class |
10-13 |
13 |
12 |
11 |
10 |
8B |
8A |
7 |
6.2 |
6.1D |
6.1C |
6.1B |
6.1A |
5.2 |
5.1C |
5.1B |
5.1A |
4.3 |
4.2 |
4.1B |
4.1A |
3 |
2B |
2A |
1 |
| Explosive substance |
1 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1 |
| Gases |
2A |
2 |
|
|
2 |
|
|
2 |
|
|
|
|
|
|
|
1 |
|
|
|
|
|
|
|
2 |
3 |
| Aerosol packages |
2B |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1 |
|
|
|
|
|
|
|
|
| Flammable liquids |
3 |
5 |
|
|
5 |
|
|
|
|
|
6 |
|
|
|
|
|
4 |
|
|
|
|
|
|
| Other explosive substances |
4.1A |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
|
|
|
|
|
|
1 |
|
|
|
|
|
1 |
1 |
| Flamable solid or desensitizing explosive substances |
4.1B |
|
|
|
|
|
|
|
|
|
6 |
|
|
4 |
1 |
|
4 |
|
6 |
6 |
|
| Pyrophoric or self-igniting substances |
4.2 |
6 |
|
|
6 |
6 |
6 |
6 |
|
|
6 |
6 |
|
|
|
|
|
|
6 |
|
| Substances producing oxydizing gases with water |
4.3 |
6 |
|
6 |
6 |
6 |
6 |
6 |
|
|
6 |
6 |
|
|
|
|
|
|
|
| Highly oxydising substances |
5.1A |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Oxydizing substance |
5.1B |
7 |
|
|
7 |
7 |
|
7 |
|
|
6 |
6 |
4 |
4 |
|
1 |
|
| Ammonium nitrate and mixtures containing ammonium nitrate |
5.1C |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
|
|
|
|
|
|
|
1 |
| organic peroxydes and self-reactive substances |
5.2 |
1 |
|
|
1 |
1 |
|
|
|
|
|
|
|
|
|
| Combustible, acutely toxic substance |
6.1A |
5 |
|
|
5 |
|
|
|
|
|
|
|
|
|
| Non-combustible, acutely toxic substance |
6.1B |
5 |
|
|
5 |
|
|
|
|
|
|
|
|
| Combustible, acutely toxic or chronic substance |
6.1C |
|
|
|
|
|
|
|
|
|
|
|
| Non-combustible, acutely toxic substance or substances with chronic effects |
6.1D |
|
|
|
|
|
|
|
|
|
|
| infectious substances |
6.2 |
|
|
|
|
|
|
|
|
|
| Radioactive substances |
7 |
|
|
|
|
|
|
|
|
1 |
| Combustible corrosive substances |
8A |
|
|
|
|
|
|
|
|
| Non-combustible corrosive substances |
8B |
|
|
|
|
|
|
|
| Combustible liquids |
10 |
|
|
|
|
|
| Combustible solids |
11 |
|
|
|
|
| Non-combustible liquids |
12 |
|
|
|
| Non-combustible solids |
13 |
|
|
| Other combustible and non-combustible substances |
10-13 |
|
|
Separate storage is requires |
|
Joint storage permitted |
| Number |
Joint storage is only permitted with restrictions (see Number) |
Explanations with regard to Table 2
(1) Specific statutory storage rules must be observed
| Storage class 1 and storage class 4.1.A |
2. Explosion Ordinance (SprengV); |
| Storage class 5.1 C: |
Dangerous Substances Ordinance (GefStoffV) Annex III No. 5 Ammonium nitrate and TRGS 511; |
| Storage class 5.2 |
BGV B 4 “Organic peroxides”; attention: the joint storage rules quoted here shall also be applied by analogy to selfreactive hazardous substances; |
| Storage class 7 |
Radiation Protection Ordinance (StrlSchV) and DIN 25422. |
(2) Joint storage in rooms is only allowed if:
1. max. 50 filled pressurised gas containers are stored, of which no more than 25 contain gases that are flammable, oxidising, acutely toxic, marked with H331 or toxic, and if these
2. are separated by a wall that is at least 2 m high and made of noncombustible materials and if
3. a distance of at least 5 m is observed between the wall and the combustible substances.
(3) Pressurised gas cylinders filled with different gases may only be jointly stored in the same warehouse room under the following conditions.
1. Pressurised gas containers containing gases that are flammable, oxidising, acutely toxic, marked with H331 or toxic, provided the total number of 150 pressurised gas containers or 15 pressure barrels is not exceeded. In addition, pressurised gas containers filled with inert gases may be stored in any quantity.
2. Pressurised gas containers with flammable and pressurised gas containers with inert gases may be stored in any quantity.
3. Pressurised gas containers with oxidising gases and pressurised gas containers with inert gases may be stored in any quantity.
4. Pressurised gas containers with acutely toxic hazardous substances of categories 1, 2 or 3/very toxic, toxic and pressurised gas containers with inert gases may be stored in any quantity.
5. In the cases 1 to 3, an additional 15 pressurised gas containers or a pressure barrel containing gases that are acutely toxic, marked with H330, and/or very toxic may be stored. Larger quantities of pressurised gas containers with acutely toxic gases must be stored in a special storage room.
6. There must be a distance of at least 2 m between pressurised gas containers containing flammable gases and pressurised gas containers containing oxidising gases. .
7. There are no restrictions as to outdoor storage.
(4) Joint storage shall be permitted if the restrictions of:
1. Table 3 are observed for storage classes 3, 5.1B, 6.1A and 6.1B,
2. Table 4 are observed for storage class 4.1B with storage class 6.1A.
Table 3: Preconditions for joint storage of storage classes 3, 5.1B, 6.1A and 6.1B
| Total quantity |
Restrictions |
| up to 1 t |
without restrictions |
| up to 20 t |
in buildings if:
- an automatic fire extinguishing installation exists or
- an automatic fire detection system exists in combination with a non-automatic fire extinguishing installation and a certified plant fire brigade. /td>
|
Table 4: Preconditions for joint storage of storage class 4.1B with 6.1A
| Total quantity |
Restrictions |
| up to 10 t |
without restrictions, |
| up to 20 t |
if
- in buildings: an automatic fire detection system exists,
- outdoors: fire detection and fire alarm are guaranteed by
- hourly controls with alert possibilities (e.g. via telephone, fire alarm, radio equipment, etc.) or if
- there is evidence that an appropriate automatic fire alarm/detection system exists. |
| up to 50 t |
if
- an automatic fire detection system exists and
- the fire brigade can reach the scene of the fire within 10 minutes of the alarm being raised. |
| up to 100 t |
if
- an automatic fire extinguishing installation exists or
- an automatic fire detection system exists in combination with a non-automatic fire extinguishing installation and a certified plant fire brigade.
|
(5) Materials that may contribute to the outbreak or rapid expansion of a fire due to their nature and quantity, as e.g. paper, textiles, wood, wood wool, hay, straw, packagings, combustible packaging filling materials, must not be stored in the warehouse sector unless they form a unit with the non-stationary containers for storage or transport.
(6) Different stored substances may only be stored together or jointly with other materials provided that this will not lead to a substantial increase in risk. A substantial increase in risk can be prevented through separate storage.
(7) Oxidising hazardous materials may be stored jointly with combustible materials:
1. in quantities of up to a total of 1 tonne without restrictions,
2. in quantities of more than 1 tonne according to the restrictions under explanation no. 1.
The requirements under explanation 5 must also be observed.
