RISK ASSESSMENT
QPP147
Section 2
Rev. March 07
C.
HAZARDS WHEN
CONTROLLING BOOM
DERRICKING AND
LOWERING:
RISK CONTROLS & GENERAL PRECAUTIONS
C1
Reduced stability and possible
tip over during boom derricking
and lowering. (When
derricking and lowering the
boom, the working radius
increases as the angle of the
boom decreases thus increasing
the risk of tip over)
C1
When derricking and lowering the boom, ensure that the load will not cause the crane to tip over at the
largest radius. Refer to the load chart in this manual.
C2
Damage to hook from
overhoisting.
C2
The Franna AT-15 and AT-20 models fully compensate for the hook height below the boom head whilst
telescoping in or out. It is safe to two block the hook block against the boom head when reeved on two
parts and with no load on hook (for road travel). When lifting a load caution should be taken not to allow
the load or hook block to come in contact with the boom and damage it. The size of the lifting load must
also be taken into account.
The MAC-25 only compensates hook height on boom 1 & 2, but not for boom 3. Normally the
overhoisting protection device will cut to prevent this, but if it is inoperative and overhoisting occurs –
lower the hook to the correct position. It is safe to override the anti-two block for road travel. When
lifting a load, caution should be exercised not to allow the load or hook block to come in contact with the
boom and damage it. The size of the lifting load must also be taken into account.
Summary of Contents for Franna AT-15
Page 1: ...QPP147 1 RISK ASSESSMENT...
Page 2: ...QPP147 Inside Cover Revised Mar07 RISK ASSESSMENT...
Page 6: ...RISK ASSESSMENT QPP147 Section 1 Rev March 07 1 GENERAL POTENTIAL HAZARDS RISK CONTROLS...
Page 15: ...RISK ASSESSMENT QPP147 Section 2 Rev March 07 2 OPERATIONAL POTENTIAL HAZARDS RISK CONTROLS...
Page 34: ...RISK ASSESSMENT QPP147 Appendix 1 Rev March 07 APPENDIX 1 WORKING ENVIRONMENT SITE CHECKLIST...
