BC00101 - Amendment 0002 - Drawings.PDF
PDF 22 MB Posted
- Attached to
- Bear Creek Service & Emergency Gates Replacement
- Solicitation number
- W9128F26RA079
About this file
This document is a set of technical design drawings for the Bear Creek Dam coating project issued by the U.S. Army Corps of Engineers Omaha District. The project involves replacing service and emergency gates at Bear Creek Lake, Colorado, and coating various steel components with a 5-coat vinyl system designated as System 5-E-Z.
The primary work scope includes: blasting two new service gates and two new emergency gates to SSPC-SP-5 white metal blast cleaning standards (NACE No. 1) and applying the 5-coat vinyl coating system, with this work performed off-site at QP-3 certified shops; coating four embedded gate slot areas on-site using QP-1 field certified contractors, with special angled blasting nozzles required to access confined spaces; and coating two embedded steel liners located in a tunnel measuring approximately 13 feet 1 inch in length and 6 feet 2 inches to 10 feet 6 inches in height, with the tunnel width at 3 feet except in the gate slot area. Critical specifications include brush stripe coating on all inside, outside corners, and welded areas with spray application for general areas; full protection of all brass components before any blasting occurs; avoidance of coating service gate stems, emergency gate stems, stainless steel hydraulic surfaces, and brass alloy components; and emergency provisions to seal slot areas during a potential 21-day lake drawdown period that encompasses tunnel drying with dehumidified air, surface preparation, five coats of vinyl application, and approximately seven days of curing. The drawings reference specification 09 97 02 and include details on containment requirements, HEPA filter exhaust placement, and an optional off-site coating scope for the emergency gates contingent upon new service gates being installed on-site.
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OPTION TO COAT NEW EMERGENCY GATES, 2
EACH. SEE NOTE 2. SEE PHOTO ON CG-009.
COAT 2 EACH EMERGENCY
GATES WITH SYSTEM 5-E-Z,
ALSO SEE PHOTOS ON SHEET
CG-009 (SEE NOTE 2).
OFF-SITE OPTION.EMERGENCY GATE SLOTS.
SEE NOTE 4.
SERVICE GATE SLOTS
SEE NOTE 3.
COAT 2 EACH NEW
SERVICE GATES WITH
SYSTEM 5-E-Z, ALSO SEE
PHOTOS ON SHEET
CG-009, (SEE NOTE 1).
BASIC OFF-SITE.
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COAT 2 EACH EMBEDDED
STEEL LINER WITH SYSTEM
5-E-Z, ALSO SEE PHOTO ON
SHEET CG-009 (SEE NOTE 5).
BASIC OFF-SITE.
COAT 2 EACH EMBEDDED STEEL LINER
WITH SYSTEM 5-E-Z, ALSO SEE PHOTO
ON SHEET CG-009 (SEE NOTE 5). BASIC
OFF-SITE.
NOTES:
1. BLAST THE 2 EACH NEW SERVICE GATES TO SSPC-SP-5 WHITE
METAL BLAST CLEANING (NACE NO.1) AND COAT 2 EACH SERVICE
GATES WITH A 5-COAT VINYL SYSTEM 5-E-Z. SHOP MUST BE QP-3
SHOP CERTIFIED. BRUSH A STRIPE COAT ON ALL INSIDE, OUTSIDE
CORNERS AND WELDED AREAS. SPRAY GENERAL AREAS. BASIC
OFF-SITE.
2. BLAST THE NEW EMERGENCY GATES 2 EACH TO SSPC-SP-5
WHITE METAL BLAST CLEANING (NACE NO.1) AND COAT 2 EACH
NEW EMERGENCY GATES WITH A 5-COAT VINYL SYSTEM 5-E-Z.
SHOP MUST BE QP-3 SHOP CERTIFIED. BRUSH A STRIPE COAT ON
ALL INSIDE, OUTSIDE CORNERS AND WELDED AREAS. SPRAY
GENERAL AREAS. THESE EMERGENCY GATES WILL BE AVAILABLE
TO BE COATED ONCE THE NEW SERVICE GATES ARE BACK ON
SITE AND OPTION IS AWARDED. THESE OLD GATES MUST REMAIN
ONSITE DURING THE 21 DAY LAKE DRAW DOWN. OPTIONAL
OFF-SITE.
3. SERVICE GATE AND EMERGENCY GATE SLOT AREAS WILL BE
DIFFICULT TO ACCESS TO OBTAIN THE SSPC-SP 5 WHITE METAL
BLAST CLEANING (NACE NO. 1). SURFACE PREPARATION
CONTRACTOR SHALL UTILIZE SPECIAL ANGLED BLASTING
NOZZLES TO GET INTO CREVICES WITH THE WIDTH RESTRICTIONS
SHOWN ON PLAN (BONNET) ON SHEET CG-007. COAT 4 EACH
EMBEDDED GATE SLOTS WITH A 5-COAT VINYL SYSTEM 5-E-Z.
CONTRACTOR MUST BE QP-1 FIELD CERTIFIED. BRUSH A STRIPE
COAT ON ALL INSIDE, OUTSIDE CORNERS AND WELDED AREAS.
CONTRACTOR MAY APPLY THE COATING SYSTEM BY ROLLERS
AND OR BRUSHES TO OBTAIN COVERAGE IN THE EMERGENCY
AND SERVICE GATES SLOT AREAS. BASIC ON-SITE COATING.
4. SERVICE GATE AND EMERGENCY GATE SLOT AREAS SHALL
HAVE EMERGENCY PROVISIONS TO SEAL THE SLOT AREAS IF A
FLOOD EVENT THAT WOULD EXCEED THE LAKE WATER DRAW
DOWN DURING THE 21 DAY COATING DURATION. THE 21 DAY
COATING DURATION INCLUDES DRYING THE TUNNEL WITH
DEHUMIDIFIED AIR, SURFACE PREPARATION TO SSPC-SP-5 WHITE
METAL BLAST CLEANING (NACE 1), COATING 5-COATS OF VINYL
(SYSTEM 5-E-Z) AND THEN CURE THE COATING SYSTEM FOR
APPROXIMATELY 7 DAYS. THIS WOULD INCLUDE REPLACING THE
OLD EMERGENCY AND SERVICE GATES . BASIC ON-SITE COATING.
5. BLAST THE EMBEDDED STEEL LINER TO SSPC-SP-5 WHITE
METAL BLAST CLEANING (NACE NO.1) AND COAT 2 EACH
EMBEDDED STEEL LINER WITH COATING SYSTEM 5-E-Z PER
SPECIFICATION 09 97 02. BRUSH A STRIPE COAT ON ALL INSIDE,
OUTSIDE CORNERS AND WELDED AREAS. SPRAY GENERAL
AREAS. PLAN VIEW IS SHOWN ON SECTION 4. PROFILE IS SHOWN
ON SECTION 1. THE STEEL LINER REQUIRES COATING THE
EXPOSED STEEL SURFACES AREAS LOCATED IN THE TUNNEL TO
INCLUDE FLOOR, WALLS, AND CEILING. FLOOR LENGTH IS ABOUT
13'-1” FEET LONG, AND HEIGHT VARIES FROM 6'2” TO 10'6” HIGH.
SEE SECTION 1. THE TUNNEL WIDTHS ARE 3' AS SHOWN ON
SECTION 3. THE TUNNEL WIDTH IN THE GATE SLOT AREA IS
WIDER. SEE PLAN BONNET ON SHEET CG-007. SEAL WITH
CONTAINMENT UPSTREAM OF EMERGENCY GATE AND
DOWNSTREAM OF MARINE DOOR WITH BARRIER. PLACE HEPA
FILTER ON EXHAUST. BASIC ON-SITE COATING.
DO NOT COAT SERVICE
GATE STEMS. 2 EACH
DO NOT COAT
EMERGENCY GATE
STEMS. 2 EACH
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BEFORE ANY BLASTING
OCCURS, CONTRACTOR WILL
FULLY PROTECT ALL BRASS
COMPONENTS.
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NOTES:
1. BLAST THE NEW EMERGENCY GATES TO SSPC-SP-5 WHITE METAL
BLAST CLEANING (NACE NO.1) AND COAT 2 EACH NEW EMERGENCY
GATES WITH A 5-COAT VINYL SYSTEM 5-E-Z. SHOP MUST BE QP-3
SHOP CERTIFIED. BRUSH A STRIPE COAT ON ALL INSIDE, OUTSIDE
CORNERS AND WELDED AREAS. SPRAY GENERAL AREAS. THESE
EMERGENCY GATES WILL BE AVAILABLE TO BE COATED ONCE THE
NEW SERVICE GATES ARE BACK ON SITE AND OPTION IS AWARDED.
THESE OLD GATES MUST REMAIN ONSITE DURING THE 21 DAY LAKE
DRAW DOWN. OPTIONAL OFF-SITE.
2. SERVICE GATE AND EMERGENCY GATE SLOTS AREAS WILL BE
DIFFICULT TO ACCESS TO OBTAIN THE SSPC-SP 5 WHITE METAL
BLAST CLEANING (NACE NO. 1). SURFACE PREPARATION
CONTRACTOR SHALL UTILIZE SPECIAL ANGLED BLASTING NOZZLES
TO GET INTO CREVICES WITH THE WIDTH RESTRICTIONS SHOWN ON
PLAN (BONNET) ON SHEET CG-007. COAT 4 EACH EMBEDDED GATE
SLOTS WITH A 5-COAT VINYL SYSTEM 5-E-Z. CONTRACTOR MUST BE
QP-1 FIELD CERTIFIED. BRUSH A STRIPE COAT ON ALL INSIDE,
OUTSIDE CORNERS AND WELDED AREAS. CONTRACTOR MAY APPLY
THE COATING SYSTEM BY ROLLERS AND OR BRUSHES TO OBTAIN
COVERAGE IN THE EMERGENCY AND SERVICE GATES SLOT AREAS.
BASIC ON-SITE.
3. SERVICE GATE AND EMERGENCY GATE SLOT AREAS SHALL HAVE
EMERGENCY PROVISIONS TO SEAL THE SLOT AREAS IF A FLOOD
EVENT THAT WOULD EXCEED THE LAKE WATER DRAW DOWN DURING
THE 21 DAY COATING DURATION. THE 21 DAY COATING DURATION
INCLUDES DRYING THE TUNNEL WITH DEHUMIDIFIED AIR, SURFACE
PREPARATION TO SSPC-SP-5 WHITE METAL BLAST CLEANING (NACE 1),
COATING 5-COATS OF VINYL (SYSTEM 5-E-Z) AND THEN CURE THE
COATING SYSTEM FOR APPROXIMATELY 7 DAYS. THIS WOULD
INCLUDE REPLACING THE OLD EMERGENCY AND SERVICE GATES .
BASIC ON-SITE COATING.
4. BLAST THE EMBEDDED STEEL LINER TO SSPC-SP-5 WHITE METAL
BLAST CLEANING (NACE NO.1) AND COAT 2 EACH EMBEDDED STEEL
LINER WITH COATING SYSTEM 5-E-Z PER SPECIFICATION 09 97 02.
BRUSH A STRIPE COAT ON ALL INSIDE, OUTSIDE CORNERS AND
WELDED AREAS. SPRAY GENERAL AREAS. PLAN VIEW IS SHOWN ON
SECTION 4. PROFILE IS SHOWN ON SECTION 1. THE LINER REQUIRES
COATING THE EXPOSED STEEL SURFACES AREAS LOCATED IN THE
TUNNEL TO INCLUDE FLOOR, WALLS, AND CEILING. FLOOR LENGTH IS
ABOUT 13'-1” FEET LONG, AND HEIGHT VARIES FROM 6'2” TO 10'6” HIGH.
SEE SECTION 1. THE TUNNEL WIDTHS ARE 3' AS SHOWN ON SECTION
3. THE TUNNEL WIDTH IN THE GATE SLOT AREA IS WIDER. SEE PLAN
BONNET ON SHEET CG-007. SEAL WITH CONTAINMENT UPSTREAM OF
EMERGENCY GATE AND DOWNSTREAM OF MARINE DOOR WITH
BARRIER. PLACE HEPA FILTER ON EXHAUST. BASIC ON-SITE COATING.
COAT 2 EACH
EMERGENCY GATE
SLOTS WITH SYSTEM
5-E-Z (SEE NOTE 2 & 3).
BASIC ON-SITE.
COAT 2 EACH SERVICE GATE SLOTS
WITH SYSTEM 5-E-Z (SEE NOTE 2 & 3).
BASIC ON-SITE.
SEE NOTE 4.
SEE NOTES 2 & 3.
BEFORE ANY BLASTING OCCURS,
CONTRACTOR WILL FULLY PROTECT
ALL BRASS COMPONENTS.
COAT 2 EACH NEW EMERGENCY
GATES WITH SYSTEM 5-E-Z. ALSO
SEE PHOTOS ON SHEET CG-009
(SEE NOTE 1). OFF-SITE-OPTION.
EMERGENCY GATE
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ALSO SEE PHOTO ON SHEET CG-009 (SEE NOTE 4). BASIC
ON-SITE.
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COAT 2 EACH NEW SERVICE
GATES AND LOW FLOW
ASSEMBLY WITH SYSTEM
5-E-Z. (SEE NOTE 1).
COAT 2 EACH NEW LOW FLOW
ASSEMBLY WITH SYSTEM 5-E-Z.
(SEE NOTE 1). DO NOT COAT
STAINLESS STEEL HYDRAULIC
SURFACES. DO COAT MILD STEEL
ASSEMBLIES.NOTES:
1. BLAST THE 2 EACH NEW SERVICE GATES TO SSPC-SP-5 WHITE METAL
BLAST CLEANING (NACE NO.1) AND COAT 2 EACH SERVICE GATES WITH A
5-COAT VINYL SYSTEM 5-E-Z. SHOP MUST BE QP-3 SHOP CERTIFIED.
BRUSH A STRIPE COAT ON ALL INSIDE, OUTSIDE CORNERS AND WELDED
AREAS. SPRAY GENERAL AREAS. BASIC OFF-SITE.
DO NOT COAT
STAINLESS STEEL
HYDRAULIC SURFACE
OR BRASS ALLOY.
BEFORE ANY
BLASTING OCCURS,
CONTRACTOR WILL
FULLY PROTECT ALL
BRASS COMPONENTS.
BEFORE ANY BLASTING OCCURS,
CONTRACTOR WILL FULLY PROTECT ALL
BRASS COMPONENTS.
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| GEOTECHNICAL | |
| CG005 | GATE AND HOIST ASSMBLIES / EMEGENCY GATES, SERVICE GATES, EMBEDED STEEL FRAMES AND SLOTS (1) |
| CG007 | OUTLET WORKS - GATE STRUCTURES / EMERGENCY GATES, SERVICE GATES, SLOTS AND EMBEDED STEEL FRAME (1) |
| CG008 | OUTLET WORKS - GATE STRUCTURES / SERVICE GATE & LOW FLOW GATE WITH HOIST ASSEMBLY (1) |
| MECHANICAL | |
| M-103 | GATE SEALS AND GATE SLOT SEALS (1) |
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