APPENDIX F—COMMENTARY ON MAINTENANCE
C.4.3.2 Maintenance Procedure
a. The following additional precautions, where applicable,
should be taken, before adjustments, repairs and maintenance
are started on a crane.
1. Boom shall be lowered to the deck or boom rest or otherwise
secured against dropping and swinging.
2. Blocks shall be lowered to the deck or otherwise
secured against dropping and swinging.
3. All controls shall be in the off or neutral position.
b. Adjustments should include the following:
1. All operating mechanisms and control systems.
2. Limit devices.
3. Swing circle assembly.
4. Prime mover.
5. Non-mechanical SystemÑAppropriate out of service
signs should be placed at the control station and/or prime
mover by a qualiÞed operator or qualiÞed inspector. Corrective
action should be taken by the owner.
After adjustments, repairs and maintenance have been
completed, the crane should not be put in service until all
guards have been reinstalled, limit devices reactivated and
maintenance equipment removed.
C.4.3.3 Repairs and Replacements
a. Booms which are being assembled or disassembled on the
deck, with or without support of the boom harness, shall be
securely blocked to prevent dropping of the boom and/or
boom sections.
b. No welding repairs shall be made to critical components,
such as booms and swing circle assemblies, without speciÞc
repair procedures and recommendations from the original
crane manufacturer, or other qualiÞed source (such as an API
licensed 2C crane manufacturer, authorized surveyor, or an
engineer experienced in the design of the crane, as determined
by the owner).
Copyright American Petroleum Institute
Reproduced by IHS under license with API
Document provided
ภาคผนวก APPENDIX F- —ความเห็นเกี่ยวกับการบำรุงรักษาCOMMENTARY ON MAINTENANCE
C.4.3.2 C.4.3.2 Maintenance Procedure
ข้อควรระวังเพิ่มเติมต่อไปนี้ที่ใช้บังคับจะต้องดำเนินการก่อนที่จะปรับเปลี่ยนซ่อมแซมและบำรุงรักษาจะเริ่มต้นบนเครน1 บูมจะถูกลดลงไปส่วนที่เหลือดาดฟ้าหรือบูมหรือมิฉะนั้นการรักษาความปลอดภัยกับการลดลงและแกว่ง2 บล็อกจะถูกลดลงไปบนดาดฟ้าหรือมิฉะนั้นการรักษาความปลอดภัยกับการลดลงและแกว่ง3 การควบคุมทั้งหมดจะต้องอยู่ในหรือออกจากตำแหน่งที่เป็นกลางข ปรับควรจะรวมถึงต่อไปนี้1 กลไกการดำเนินงานทั้งหมดและระบบการควบคุม2 อุปกรณ์ จำกัด 3 สวิงประกอบวงกลม4 นายก5 a. The following additional precautions, where applicable,
should be taken, before adjustments, repairs and maintenance
are started on a crane.
1. Boom shall be lowered to the deck or boom rest or otherwise
secured against dropping and swinging.
2. Blocks shall be lowered to the deck or otherwise
secured against dropping and swinging.
3. All controls shall be in the off or neutral position.
b. Adjustments should include the following:
1. All operating mechanisms and control systems.
2. Limit devices.
3. Swing circle assembly.
4. Prime mover.
5. Non-mechanical SystemÑAppropriate out of service
signs should be placed at the control station and/or prime
mover by a qualiÞed operator or qualiÞed inspector. Corrective
action should be taken by the owner.
After adjustments, repairs and maintenance have been
completed, the crane should not be put in service until all
guards have been reinstalled, limit devices reactivated and
maintenance equipment removed.
C.4.3.3 Repairs and Replacements
a. Booms which are being assembled or disassembled on the
deck, with or without support of the boom harness, shall be
securely blocked to prevent dropping of the boom and/or
boom sections.
b. No welding repairs shall be made to critical components,
such as booms and swing circle assemblies, without speciÞc
repair procedures and recommendations from the original
crane manufacturer, or other qualiÞed source (such as an API
licensed 2C crane manufacturer, authorized surveyor, or an
engineer experienced in the design of the crane, as determined
by the owner).
Copyright American Petroleum Institute
Reproduced by IHS under license with API
Document provided
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