IS 12159:1987 is the Indian Standard (BIS) for concrete vibrators - mechanical poker type - safety requirements. This standard specifies the safety requirements for the design and construction of mechanically-driven, poker-type concrete vibrators. It covers the power unit, flexible shaft, and poker head to ensure operator safety from mechanical, thermal, and electrical hazards during use.
Lays down safety requirements for mechanical poker type concrete vibrators.
| Parameter | IS Value | International | Source |
|---|---|---|---|
| Stability Test | Unit must be stable on a floor with a slope of 15 degrees. | Unit must be stable on a test platform with a 15% slope (approx. 8.5 degrees). | EN 12649:2008+A1:2011 |
| Hand-Arm Vibration (HAV) Declaration | Not specified. | Mandatory. Value must be measured as per ISO 20643 and declared in the manual and on the machine marking if over 2.5 m/s². | EN 12649:2008+A1:2011 |
| Noise Emission Declaration | Specifically excluded from the scope. | Mandatory. The A-weighted sound power level must be measured (e.g., per ISO 3744) and declared. | EN 12649:2008+A1:2011 |
| Lifting Provision Threshold | Required if the mass of the unit exceeds 20 kg. | Required for all machines not intended to be moved by hand. No specific mass threshold; based on risk assessment for safe handling. | EN 12649:2008+A1:2011 |
| Hot Surface Protection | Not explicitly specified, covered generally under 'Safety Precautions'. | Parts that can be touched and exceed touch-temperature limits must be guarded or marked with a warning symbol (ISO 7010-W017). | EN 12649:2008+A1:2011 |
| Emergency Stop | Requires a device for stopping the prime mover which is readily identifiable and accessible. | Specifies requirements based on ISO 13850 for emergency stop functions, which is more detailed regarding performance and reliability. | EN 12649:2008+A1:2011 |