Entry Space

Railway Access Door Installation

Contemporary requirements for protective iron doors and their classification methods are contained in the following regulatory documents: GOST P 51072-97, GOST P 50862-96, GOST P 51112-97, GOST P 50941-96, SNIP 21-01-97, GO 78.147-93 MUP RF.

By definition of the above documents:

• Railway protection door - is a permanent hacking device consisting of a door box with a movable vain, which is locked in a door locker or locking mechanism.
• The door is an act aimed at violating the integrity of the door or its components in order to obtain partial or full access to the protected door.
• Sustainability to hack is the ability of the door to resist hacking. The resistance to break-in Ec is determined on a test basis according to the formula:

  Ec = k*t+b

where k is the coefficient of the instrument used which describes its technical parameters (mass, dimensions, electrical power, etc.) and the probability of detecting by means of noise, vibration, smoke, spark, etc., t is the time of use of the tool in the minutes test, b is the so-called base value of the instrument describing the difficulties in its delivery to the water point of entry, the time of electrical power, and

Readed values of k and b for various instruments are given in these regulations. When used to hack several instruments, the Es door resistance value is defined as the time of testing t to the highest k value of the instrument used, and adds the base values of all the tools used in the experience.

The door break-in classes are shown in table 1, respectively, the minimum value of the Es door resistance in the test series using different tools. However, partial access is defined as the possibility of penetration through a doorway of a gauge having a diameter of not less than 125 mm, with full access a template with a diameter of not less than 350 mm.

Table I.