UN Code

UN Code Testing Procedure and FAQ (Frequently asked question)

A. INTRODUCTION

The suitability of a drum for international transport is mentioned in the UN recommendation and is determined by subjecting the filled packaging to certain performance tests. In case of plastic drums these tests are…

  • Drop Test (The Height of drop test is determined by the packaging groups and specific gravity /Density of product to be packed)
  • Stack Test for 28 days
  • Air & Hydraulic leak tests for liquids carrying drums

The testing of drums is conducted by approved test authority in India. The certificates in India are issued by the Indian institute of packaging. ( Who are authorised by Director General of Shipping Government of India).

B. UN CODE MARKING INTERPRETATION

Once a packaging has fulfilled the managements set out in the performances tests, the UN recommendations then set out a procedure for marking the packaging in an appropriate manner. The certified packaging is first to be marketed with the UN symbol. This is followed by a sample code for Identifying the type of packaging, e.g. for plastics drums :

  • 1H1 NON REMOVABLE HEAD
  • 1H2 REMOVABLE HEAD.
  • 3H1 JERRICAN, NON REMAVABLE HEAD.
  • 3H2 JERRY CAN, REMOVABLE HEAD

This in turn is followed by a letter X,Y, or Z, which identifies the packaging group to which the drum has been tested. Depending upon whether the drum was tested for solids or liquids, the code will contain an “S” preceded by the gross weight of the package tested in K.G. or followed by a number specifying the hydraulic test pressure in KPA. Underneath this code is the certificate number preceded by letters identifying the country in which the drum was certified. The two example which follow should clarify the above.

C. Validity :-

NORMAL VALIDITY OF CERTIFICATION IS FOR 6 MONTHS

  1. Validity given is for production of the packages. The Packages produced during the validity period can be supplied in additional period of 10 days after expiry of the certificate.
  2. Against certificate manufacturers/Dealers can supply maximum 2500 packages. If the requirement of exporters is more than 2500 packages it is necessary to take a quality checking report by the manufacturers/Dealers of the packages by submitting 5 certificate.
  3. The manufacturers / Dealers of the packages should not supply the packages after 100 days period from date of issue of certificate.
  4. Whatever package produced by the exporters within 100 days those can be used for 3 more months after expiry of the certificate.
  5. If some packages left over after 6 months period from date of issue of certificate. Then it is necessary to check the adequacy of the packages by conducting trails as per IMDG-CODE, ANNEX – I. Once the satisfactory performance is obtained, then the exporter/s can utilise the balance quantity of the packages for three more months (i.e Total 9 months period from date of issue of certificate).

D. TIME/ COST REQUIRED FOR CERTIFICATION

  • For full open mouth drums ( for powders):- The time required for test certification is approx. 7 days ( subject to availability of IIP Inspector).
  • For narrow mouth & wide Mouth drum ( for liquids/pasted):- The time required for test certification is approx. 35 days ( subject to availability of IIP Inspector)
  • For more details and charges contact our sales team.
 

E. TEST PROCEDURE

24 Nos. of the containers to be tested have to be available to the test authority who will in turn draw 8 from the lot to be subjected to the following tests.

i) FOR SOLIDS/POWDERS:

TESTS / OBSERVATION DETAILS

1. Drop Test ( Drop Height) :

Depends on the material to be in the drum

1.1 Test at ambient temperature

  • First set of drums were dropped diagonally on top.
    Observation : Neither damage nor seepage of sand and sawdust for passing mixture was observed from the drums.
  • Second set of drums were dropped flat on body wall.
    Observation : Neither damage nor seepage of sand and saw dust for passing mixture was observed from the drums.

1.2 Test at 18ºC Temperature : The filled drums were exposed to – 18ºC for 24 hours

  • First set of drums were dropped diagonally on top.
    Observation : Neither damage nor seepage of sand and saw dust for passing mixture was observed from the drums.
  • Second set of drums were dropped flat on body wall.
    Observation : Neither damage nor seepage of sand and saw dust for passing mixture was observed from the drums.

2. STACK LOAD TEST

  • Filled drums were stacked one above the other for a period of 24 hours. (Stacking height : 3.0 mtrs.)
    Observation : Neither deformation for seepage of sand & saw dust mixture was observed from the drums.

Conclusion : Passes the tests. ( Test report, however, does not include the compatibility studies.) *Test is performed at the institute.

ii) FOR LIQUIDS/PASTES :

1. DROP TEST: ( Drop height depends on material for which test is conducted)

a. First set of containers were dropped diagonally on top.
OBSERVATION : Neither rupture nor leakage was observed from for passing any of the containers.

b. Second set of containers were dropped on closures.
OBSERVATION : Neither rupture nor leakage was observed from for passing any of the containers.

2. LEAKAGE TEST: The containers were subjected to an air pressure of 02.kg/cm square.
OBSERVATION : No leakage was observed through the closures for passing and moulding joints.

3. STALK LOAD TEST: A superimposed weight was placed on a flat surface resting on the top of the containers arranged in 2x1x1 manner for a period of 28 days. The weight was equivalent to the total weight of filled identical containers which could be stacked on it during the transport. (Stacking height : 3.0 mtrs.) (Test was performed at the institute.)
OBSERVATION : Neither deformation nor leakage was observed for passing.

4. HYDRAULIC TEST: The containers were subjected for a period of 30 minutes to a hydraulic gauge pressure of 1.0 kg/cm square.
OBSERVATION : Neither rupture nor leakage was observed from for passing the containers.

CONCLUSION : Passes the tests. ( Test report, however does not include the compatibility studies.)