Revision Summary

Summary of Changes in 2025

Note: Replaced "Worker" with Employee in all sections

Section	Section title	Description
COVER	COVER	Publication Date
Section A	Operating Authority	New section; Patrolling Requirements
Section B	Communications	No Changes
Section C	Safety Cards	No Changes
Section D	Tagging Procedures	Adding Distribution SCADA Switches and Reclosers
Section E	Clearance Procedures	Substation Islanding
Section F	Field Clearance Procedures	No Changes
Section G	General Operating Procedures	No Changes
Section H	Substation Switching Procedures	No Changes
Section I	Substation Voltage Regulators, LTC’s and Controls	No Changes
Section J	Distribution Switching Devices and Equipment	Adding Distribution SCADA Switches and Reclosers
Section K	Transmission Switching Procedures	No Changes
Section L	District Generating Facilities	Updated language around demarcation points, LOTO for JHP, Youngs Creek, and Woods Creek.
Section M	Appendix I	No Changes
Section N	Appendix II	No Changes
Note		No notes

Summary of Changes in 2024

Section	Section title	Description
COVER	COVER	Publication Date
Section A	Patrolling Requirements	New section
Section B	Communications	No Changes
Section C	Safety Cards	No Changes
Section D	Tagging Procedures	No Changes
Section E	Clearance Procedures	No Changes
Section F	Field Clearance Procedures	Updated definition of a "lateral", and specifies field clearances are only allowed on hot taps and not wedge or bolted connections.
Section G	General Operating Procedures	No Changes
Section H	Substation Switching Procedures	No Changes
Section I	Substation Voltage Regulators, LTC’s and Controls	No Changes
Section J	Distribution Switching Devices and Equipment	No Changes
Section K	Transmission Switching Procedures	No Changes
Section L	District Generating Facilities	No Changes
Section M	Appendix I	No Changes
Section N	Appendix II	No Changes
Note		No notes

Summary of Changes in 2022

Section	Section title	Description
Section F	Field Clearances	Field Clearance subheading updated
COVER	COVER	Publication Date
Section A	Patrolling Requirements	New section
Section B	Communications	No Changes
Section C	Safety Cards	No Changes
Section D	Tagging Procedures	Added language for breaker lockout, Steps 1&2
Section E	Clearance Procedures for District Employees	Added “Recloser bypass switches are not preferred devices for clearance points but may be used as a clearance point if agreed to by the clearance holder.”
	Clearance Procedures for Tree Trimmers	Tree Trimers shall always treat the conductor(s) or equipment as ENERGIZED and maintain minimum approach distances noted in WAC 296-45-325 table 2 unless working under a clearance with equal potential grounding in place.
Section F	Field Clearance Procedures	Step 1: Lead Employee, submits a completed Switching Request to ECC (See Section A) Step 2: Lead Employee, Verifies the location of the worksite and clearance point Step 3 (previous step 2) Step 4 (previous step 3) Step 5 (previous step 4)
Section G	General Operating Procedures	No Changes
Section H	Substation Switching Procedures	No Changes
Section I	Substation Voltage Regulators, LTC’s and Controls	No Changes
Section J	Distribution Switching Devices and Equipment	No Changes
Section K	Transmission Switching Procedures	No Changes
Section L	District Generating Facilities	Added Arlington Microgrid
Section M	Appendix I	No Changes
Section N	Appendix II	Defining Hot Line Hold
Note		Energy Control Center has been abbreviated in several areas. Several typos have been corrected throughout that have no impact on operations.