Hydro Plant Risk Assessment Guide

EMERGENCY CLOSURE SYSTEM
TIER 2 CONDITION ASSESSMENT SUMMARY
Date: _________________________________ Location: _______________________________
Unit: ___________________ Type of Gate: __________________________________
Part I: Determine Adjustment to Tier 1 Emergency Closure System Condition Index.
Emergency Closure System – Gates with Electric Operators
Adjustment to
Tier 1
No. Tier 2 Test (Table No.) Condition Index
Gates (Structural Integrity and Functional Operation):
T2.1.1 Corrosion (11)
T2.1.2 Yielding, Fracture, Fatigue, and Fabrication Discontinuities (12)
T2.1.3 Improper Field Repair and/or Modifications (13)
T2.1.4 Raising/Lowering Performance (14)
T2.1.5 Slots, Seals, and Sealing Surfaces (15)
T2.1.6 Wheels, Rollers, Roller Chains, Bearings, and Bushings (16)
Electric Operators (Structural Integrity and Functional Operation):
T2.3.1 Corrosion (23)
T2.3.2 Anchoring (24)
T2.3.3 Yielding, Fracture, Fatigue, and Fabrication Discontinuities (25)
T2.3.4 Improper Field Repair and/or Modifications (26)
T2.3.11 Actuation Performance (32)
T2.3.12 Electric Controls (33)
T2.3.13 Electric Motors (34)
T2.3.14 Electric Brakes (35)
T2.3.15 Wire Ropes and Chains (36)
T2.3.16 Power Screws (37)
T2.3.17 Drums and Sheaves (38)
T2.3.18 Gearboxes, External Gearing, and Chain Sprockets (39)
T2.3.19 Bearings and Bushings (40)
Miscellaneous Tests and Conditions:
T2.4 Miscellaneous Deficiencies (41)
T2.5 Annunciation (42)
T2.6 Maintenance Escalation (43)
T2.7 Other Specialized Diagnostic Tests
E11-41