Safety Cards

The following cards shall not be placed or removed without authorization from the System Operator or Generation Operator/Constructor having jurisdiction.

Exception: See Field Clearance Section.

MASTER SAFETY CARD

These cards are red and white and are only used in association with clearances. These cards shall be filled out and securely attached on or near the point of control for the device or operating mechanisms of each switch, breaker, or source that could energize the line, cable, station, and equipment to be worked on. This card shall also be used at the Jackson Hydro Facility on devices to indicate clearance points. The Master Safety Card, as shown in this section, shall also be used for terminal and field clearances.

Supervisory Control and Data Acquisition (SCADA) will be tagged electronically.

When a clearance is released, the Master Safety Card may be discarded.

DANGER - DO NOT OPERATE CARD

These cards are white and red and are used on the District’s lines or equipment, or customer equipment to indicate an isolation point for the customer from the District’s electric system. The card may be used at an isolation point for District employee/workers from the customer’s electric system. The card can also be used at our Generation Facilities for LO/TO requirements. They are attached on or near the point of control for the device or operating mechanisms.

Exception: The card may also be used at an isolation point for District employee/workers working on any electric system under 601 volts without ECC approval.

SCADA will be tagged electronically.

HOT LINE HOLD SAFETY CARD

These cards are safety yellow and indicate that the auto reclosing is disabled and instantaneous trip is enabled on circuit breakers or line reclosers. They are attached on or near the point of control for the device or operating mechanisms.

SCADA will be tagged electronically.

ABNORMAL CONDITION CARD

These cards are yellow and shall be used as a warning to identify equipment or a part of the system that may be defective, operating in an unusual manner, or subject to special operating conditions.

TROUBLE CARD

These cards are used during localized/major emergencies in the field to identify system damage

Informational Cards

These may be placed or removed in the field for conditions not relating to system operating issues and are not under the control of the System Operator or Generation Operator/Constructor.

CAUTION CARD

These cards are yellow and may be placed by the employee/worker in the field to provide information to other field employees.

Where to Attach Cards

Attach the appropriate safety card to equipment during switching and clearance operations. Never place in front of or cover a Master Safety Card with any other type of card.

Circuit Breakers and Switches - Attach to the control devices. SCADA is also electronically tagged when it is a control device.

Switch Operating Mechanisms - Place in card holder(s) or securely attach on or near the mechanism so it is out of reach from the ground on pole mounted facilities.

Single/Multi-Pole Disconnect Switches - Place in card holder(s) or attach securely to the pole out of reach from the ground.

Substations- Place in card holders or other device(s) and attach to switch(s), circuit breaker(s), disconnect switch(s), or transfer bus switch(s) which could energize the line or equipment to be worked on. All threephase, single-pole disconnect switch(s) shall be tagged; however, only the center disconnect is required to have clearance information. For stations with a local computer that can operate device(s), a card shall be placed on the computer’s enable/disable switch.

Underground Conductors - Attach the card on, or if not possible, near each switchable device or elbow. At least one of the cards for a threephase circuit shall contain the clearance information. If more than one multi-phase circuit is under clearance in a vault, all cards shall be filled out completely.