The 7 Steps That Save Lives - ABB ACS5000 User Manual

2.3.2. The 7 steps that save lives

ABB's 7 steps that save lives concept is a series of actions that must take place prior to
commencing work on or near electrical installations.
1) Prepare for the work: do an on-site risk assessment or job hazard analysis that considers
the limits of approach for shock and arc-flash.
• Be in possession of a clear work order to execute the work.
• When required, the access or work permit is to be obtained by a person who is authorized
for the specific electrical system.
• Engage the person responsible for electrical equipment or system to review single-line
diagrams, schematics, switching plans, etc.
• Ensure the competence of workers.
• Check for proper tools for the job.
• Determine and select the proper arc-rated Personal Protective Equipment (PPE).
• Decide of the appropriate work methods and initiate the Permit To Work (PTW) process.
2) Clearly identify the work location and equipment.
• Use your senses (sight, hearing and smell) to identify problem areas.
• Define the work area via barriers and barricading and label equipment.
• Avoid distractions such as talking or texting on the phone.
3) Disconnect all sources of supply and secure against reconnection by applying
Lockout/Tagout.
• If ABB is responsible for switching and it cannot be done remotely, then the person
performing the switching must be properly trained and wearing the proper PPE
identified in step 1.
• The Person in Charge of Work (PICW) must ensure that switching is performed in the
proper manner by witnessing it from a safe distance if present on site or by engaging the
person responsible for switching to identify all isolation points.
• Apply Lockout/Tagout (LOTO) to the energy isolation device and if multiple energy
isolation devices are involved, then Group LOTO must be implemented with the PICW
serving as the Group LOTO Leader.
4) Verify the absence of operating voltage: always test before you touch!
Only use properly rated and inspected voltage detection devices and wear proper PPE
identified in step 1:
• Test voltage detection device
• Test for voltage
• Test voltage detection device
It is highly important that the voltage detection device is tested on a known voltage source
such as a Proving Unit or by performing an internal self-test, according to the
manufacturer's instructions, before and after testing for the absence of operating voltage.
5) Carry out earthing and short-circuiting.
• Close and lock the earthing switch if the electrical equipment is designed for this
purpose or apply portable equipment for earthing and short-circuiting.
If this is carried out by the customer, then the PICW must ensure that this equipment is
properly earthed as a part of the integration/verification and during step 7 when the PICW
walks the PTW.
PRODUCT
ACS5000W gen. 2
DOCUMENT KIND
User manual
IMPORTANT SAFETY INFORMATION
DOCUMENT ID.
3BHS799208 E01
REV. LANG. PAGE
J en 25/186