ДСТУ EN ISO 80079-37:2017 Середовища вибухонебезпечні. Частина 37. Неелектричне устатковання для вибухонебезпечних атмосфер. Неелектричний ступінь захисту за допомогою конструкційної безпеки с, керування джер...

ПІДТВЕРДЖУВАЛЬНЕ ПОВІДОМЛЕННЯ

прийнято як національний стандарт
методом «підтвердження» за позначенням
 

FOREWORD

1 Scope

2 Normative references

3 Terms and definitions

4 Determination of suitability

5 Requirements for equipment with Type of Protection constructional safety “c”

5.1 General requirements

5.2 Ingress protection

5.2.1 General

5.2.2 Ingress protection in special cases

5.3 Seals for moving parts

5.3.1 Unlubricated gaskets, seals, sleeves, bellows and diaphragms

5.3.2 Stuffing box seals (packed glands)

5.3.3 Lubricated seals

5.4 Equipment lubricants, coolants and fluids

5.5 Vibration

5.6 Requirements for moving parts

5.6.1 General 

5.6.2 Clearance 

5.6.3 Lubrication

5.7 Requirements for bearings

5.7.1 General

5.7.2 Lubrication

5.7.3 Chemical compatibility

5.8 Requirements for power transmission systems

5.8.1 Gear drives

5.8.2 Belt drives

5.8.3 Chain drives

5.8.4 Other drives

5.8.5 Hydrostatic, hydrokinetic and pneumatic equipment

5.9 Requirements for clutches and variable speed couplings

5.9.1 General

5.9.2 Slipping 

5.9.3 Friction

5.10 Flexible couplings

5.11 Requirements for brakes and braking systems

5.11.1 Brakes used only for stopping in emergency

5.11.2 Service brakes (including friction brakes and fluid based retarders)

5.11.3 Parking brakes

5.12 Requirements for springs and absorbing elements

5.13 Requirements for conveyor belts

5.13.1 Electrostatic requirements

5.13.2 Materials

5.13.3 Belt tension

5.13.4 Alignment

5.13.5 Earthing and bonding

6 Requirements for equipment with Type of Protection control of ignition source “b”

6.1 General

6.2 Determination of the control parameters

6.2.1 General 

6.2.2 Determination of the safety critical values

6.3 Ignition prevention system design and settings

6.3.1 Determining the performance requirements or operating characteristics

6.3.2 Instructions

6.3.3 System lockout

6.3.4 Operator intervention

6.4 Ignition protection of sensors and actuators

6.5 Ignition protection types

6.5.1 Ignition protection type b1

6.5.2 Ignition protection type b2

6.5.3 Application of ignition protection types

6.5.4 Requirements for ignition protection types

6.5.5 Programmable electronic devices

7 Requirements for equipment with Type of Protection liquid immersion “k”

7.1 Determination of the maximum/minimum criteria

7.2 Protective liquid 

7.3 Equipment construction

7.3.1 General

7.3.2 Working angle

7.3.3 Measures to ensure effectiveness of liquid

7.3.4 Accidental loosening

7.3.5 Level monitoring 

7.3.6 Loss of liquid

7.3.7 Open equipment 

8 Type tests

8.1 Type tests for equipment with Type of Protection constructional safety “c”

8.2 Type tests for equipment with Type of Protection control of ignition source “b”

8.2.1 Determination of control parameters

8.2.2 Function and accuracy check of the ignition protection system

8.3 Type tests for equipment with Type of Protection liquid immersion “k”

8.3.1 General

8.3.2 Increased pressure test on enclosed equipment having a sealed enclosure that contains static, or flowing protective liquid

8.3.3 Overpressure test on enclosed equipment having a vented enclosure

9 Documentation

9.1 Documentation for equipment with Type of Protection constructional safety “c”

9.2 Documentation for equipment with Type of Protection control of ignition sources “”b”

9.3 Documentation for equipment with Type of Protection liquid immersion “k”

10 Marking

10.1 General

10.2 Safety devices

Annex A (informative)  Approach and application: equipment with Type of Protection “c”

A.1 General remarks regarding ignition hazard assessment

A.2 Stuffing box seal (see Table A.2)

A.3 Slide ring seal

A.4 Radial seal

A.5 Belt drives

Annex B (normative)  Test requirements

B.1 "Dry run" type test for lubricated sealing arrangements

B.2 Type test for determining the maximum engaging time of clutch assembly

B.2.1 Apparatus 

B.2.2 Procedure

Annex C (informative)  Methodology: equipment with Type of Protection “b”

Annex D (informative)  Approach to assign the required ignition protection type used for equipment to achieve different EPL

D.1 For EPL Gc and Dc

D.2 For EPL Gb and Db

D.3 For EPL Mb

D.4 For EPL Ga and Da

Annex E (informative)  Information on functional safety concept

E.1 ISO 13849-1

E.2 IEC 61508-1

E.3 IEC 62061

E.4 Reliability according to functional safety standards

Bibliography

Figure C.1 – Flow diagram of the procedures described in this document

Table 1 – Minimum ignition protection types required when Ex “b” is selected to achieve the intended EPL for Group II and III equipment

Table 2 – Minimum ignition protection types required when Ex “b” is selected to achieve the intended EPL for Group I equipment

Table A.1 – List of examples for some of the thought processes and principles used

Table A.2 – Stuffing box seal

Table A.3 – Slide ring seal

Table A.4 – Radial seal

Table A.5 – Belt drives

Table E.1 – Application of ignition protection type