Nuclear Power Generation. Solenoid Operated Valves

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1 Nuclear Power Generation Solenoid Operated Valves

A Nuclear Legacy Over 50 Years of Nuclear Experience Target Rock, a business unit of Curtiss-Wright Flow Control Company, was founded in 1951 to meet the special severe service valve requirements of

The first Target Rock valves were installed on the U.S.S. Nautilus, the U.S. Navy s first nuclear powered submarine. Target Rock valves continue to be the valve of choice for the U.S. Navy and they are installed on every nuclear powered submarine and aircraft carrier commissioned by the United States.

Target Rock was also one of the first recipients of the ASME N stamp in the early 1970s.

applications. An Innovative Spirit Purchased by Curtiss-Wright Corporation in 1972, Target Rock is a business unit of the Curtiss- Wright Flow Control Company.

3 A Nuclear Legacy Over 50 Years of Nuclear Experience Target Rock, a business unit of Curtiss-Wright Flow Control Company, was founded in 1951 to meet the special severe service valve requirements of the United States Nuclear Navy. Today Target Rock is the premier supplier of highly engineered, critical service valves and related products to both the U.S. Navy nuclear fleet and the global nuclear power generation industry. The first Target Rock valves were installed on the U.S.S. Nautilus, the U.S. Navy s first nuclear powered submarine. Target Rock valves continue to be the valve of choice for the U.S. Navy and they are installed on every nuclear powered submarine and aircraft carrier commissioned by the United States. Since those early days, Target Rock has expanded to be the leading designer of critical solenoid valves for nuclear power reactors. Target Rock was also one of the first recipients of the ASME N stamp in the early 1970s. With over 6,000 valves installed in nuclear safety-related applications worldwide, Target Rock has the proven products and experience to handle the nuclear power industry s most difficult applications. An Innovative Spirit Purchased by Curtiss-Wright Corporation in 1972, Target Rock is a business unit of the Curtiss- Wright Flow Control Company. Curtiss-Wright was established in 1929 with the merger of Wright Aeronautical Company and Curtiss Aeroplane and Motor Company and has been listed on the New York Stock Exchange (NYSE - CW) since its inception. Over the years, Curtiss-Wright has transitioned from an aircraft company to a diversified provider of highly engineered and technologically advanced products and services to a broad range of industries. With the backing of a multinational company, Target Rock has an outstanding reputation for its custom products and technologies. With state of the art manufacturing facilities, in-house testing capability for duplicating reactor conditions, and nuclear experienced engineers and technicians, Target Rock has the capabilities to meet the industry s toughest challenges. Quality Assurance Target Rock s extensive manufacturing facilities house some of the most advanced metalworking, welding and heat treating equipment. These state-of-the-art capabilities assure that Target Rock products are manufactured to the highest standards of quality in accordance with: ASME Section NQA-1 ANSI N CFR50 Appendix B MIL-Q-9858, MIL , MIL-STD-45662, MIL-STD-767 Certified for ultrasonic, magnetic particle, liquid penetrant, and radiographic non-destructive tests in accordance with military and ASME specifications. Target Rock maintains ASME N, NPT, and NV Code Stamps. NUPIC and NIAC audits are conducted regularly. 1

4 Features and Benefits of Solenoid Operated Valves Solenoid Operated Valves (SOV) are installed in critical safety applications throughout a nuclear plant. The primary advantages of using a SOV include reliability, durability, simplicity, small size, and reduced operating and maintenance costs. Reliability Solenoid Valves have no friction which results in unlimited cycle life Process fluid is confined to a full static pressure related boundary There are no elastomeric diaphragms that can wear or age Solenoid Valves have no stem, eliminating packing or bellows seals that can leak or fail Ease of Maintenance Elimination of valve mounted components decreases overall maintenance activities Bolted Bonnet design provides for faster repair and reduced ALARA exposure Solenoid Valves have only three moving parts and no packing to maintain or replace Simplified Controls All electric fly by wire design Solenoid Valves exhibit no hysteresis, high breakaway forces, or accelerated stem wear ancillary equipment required: volume boosters, airsets, or solenoids air system required Low Installed Cost seismic supports required - Low Cg allows line mounting safety related nitrogen backup system required for Post Accident Operation heavy power cable - Requires only #18 AWG wire Low power requirement watts of electrical power motor control center - Simple relay on switch outlets 2

5 Solenoid Operated Valve Features Compared to Air Operated Valves (AOV) and Motor Operated Valves (MOV) Features SOV AOV MOV Light Weight - Low Weight to Cv Ratio 42 lbs 185 lbs 300 lbs Compact - Extra Accessories True False True Stroke Time Fast Slow Very Slow Air Backup Required for Safety-Related Systems Motor Control Required Sliding or Rotating Stem Against Packing Friction Coefficients to Calculate Selectable Failure Mode Requires Stem Packing Subject to GL89-10 Testing Elastomeric Diaphragm Operators Instrument Air Issues Requires Class 1E Nitrogen Back-Up Frequency Response Excellent Average Poor Modulating Valves with Hysteresis Typical Control Valve Installation Schematic Solenoid Actuated Control Valve Pneumatic Actuated Control Valve Power Supply Flow Demand Signal Positioner Valve Control Signal Instrument Air Regulator I/P Transducer Solenoid 3-15 psi Booster Positioner Target Rock Control Valve 3

6 General Valve Specifications Solenoid Coil Class H insulation (200 C) Valve Position Sensor } Electrical Assembly Designed for continuous duty Designed for DC electrical power, rectified for AC service. Fixed Core Trim Materials Solenoid Coil Pilot Disc Plunger Return Spring Main Disc Main Disc PH or 420 SS Pilot Disc - Haynes 25, Colmonoy Guide - 440C or 316 SS Seat - 440C, Stellite, rem Seals - Spiral-Wound Gasket - Welded - Elastomer O-Rings Seating Options Hard Seat: All trims are available with a hard seat option, which provides ANSI B Class IV or V leakage ratings. Soft Seat: Many trims are available with a soft seat option for ANSI B Class VI Leakage Rating. Valve Size 1/2 1 Max Liquid Flow (GPM) Max Cv 2 15 General Valve Data - ANSI B31.1, B Available to ASME Section I or III requirements - End Connection - Butt or Socket Weld, Flanged - Flow Direction - Over Seat - Body Material - A182 (316SS or F22CrMo) A105 (CS) - IEEE Qualified - IEEE 323, 344, ,158 2, Valve Options - rmally Open/rmally Closed - Position Indication Switches - LVDT Position Output on Modulating Valves - Specialized Trim Characteristics - Anti-Cavitation Trim 4

7 On/Off Valve Operation On/Off Valve Closed To actuate the valve, a magnetic force is generated between the Plunger and the Fixed Core. This force is proportional to the electric current supplied to the coil. The current magnetizes the Plunger, which is attached to the Pilot Disc and is attracted upward toward the Fixed Core. This action compresses the return spring and opens a vent port in the Main Disc. As the vent port opens, the Control Pressure above the Main Disc decreases, causing the Main Disc to lift, opening the valve by developing a differential pressure across the disc. To close the valve, the current is removed, allowing the return spring to move the Plunger and Pilot Disc downward, closing the vent port in the Main Disc. As the vent port closes, the Control Pressure above the Main Disc increases, which, along with the return spring, causes the Main Disc to move downward, closing the valve. Pilot Disc Lifts Modulating For Modulating Service, the Valve Assembly is similar to the On/Off version except for certain trim modifications which provide for: Proportional positioning of the Pilot Disc Control Pressure Vents Stable and smooth follow of the Main Disc relative to the Pilot Disc positioning Valve operation is similar to the On/Off Valve except that the solenoid current is modulated by an electronic positioner to modulate magnetic force. By selecting an appropriate spring rate and preload, the magnetic force and return spring force is balanced anywhere between zero and full stroke, thus positioning the Pilot Disc to any desired position. An increase in power to the coil is required to move the Pilot Disc from point A to point B. An incremental increase in power to the coil results in an incremental movement of the valve trim. Valve Open (Main Disc Lifts) Position feedback is inherent in the hydraulically coupled Pilot Disc/Main Disc arrangement. Any movement of the Main Disc will change the area of the pilot discharge orifice thereby restoring the force balance required to maintain the position of the Main Disc as determined by the location of the Pilot Disc. Stable control of the Main Disc position is assured. The mechanical coupling, by means of the link pin, provides for Main Disc actuation when the system is depressurized. 5

Target Rock Solenoid Valves Featured Applications: Sampling Valve (DASV) Reactor Head Vent Valve (RHV) Product Description: The Target Rock DASV is a Direct Acting, reduced orifice solenoid valve

The Target Rock RHV is a Y-pattern unidirectional solenoid actuated valve specifically designed for use in the nuclear reactor coolant system high point vent application.

internals - Screw adjustable reed switches reduces maintenance time High Opening Forces - Magnetic force increased by 400% over previous designs - Improved coil and plunger design Single Pilot Design

life Simplified Maintenance - Bolted bonnet design for quick access to internals - Screw adjustable reed switches reduces maintenance time Valve Specification: Size: 1/4 to 1 Type: Globe, T-Pattern

8 Target Rock Solenoid Valves Featured Applications: Sampling Valve (DASV) Reactor Head Vent Valve (RHV) Product Description: The Target Rock DASV is a Direct Acting, reduced orifice solenoid valve that meets the challenges presented by reactor coolant and containment sampling applications. The Target Rock RHV is a Y-pattern unidirectional solenoid actuated valve specifically designed for use in the nuclear reactor coolant system high point vent application. Features and Benefits: Direct Acting Design - Elimination of pilot, even at high pressures - Operation over a wide range of pressures Simplified Maintenance - Bolted bonnet design for quick access to internals - Screw adjustable reed switches reduces maintenance time High Opening Forces - Magnetic force increased by 400% over previous designs - Improved coil and plunger design Single Pilot Design - Opens against full RCS pressure - Tight shut-off in high pressure, high temperature applications 50% Increase in Pilot Return Spring Force - Provides tight sealing at all pressures - Extends pilot life Simplified Maintenance - Bolted bonnet design for quick access to internals - Screw adjustable reed switches reduces maintenance time Valve Specification: Size: 1/4 to 1 Type: Globe, T-Pattern Body Material: 316 SS or 316L SS Operating Mode: On-Off, Fail Closed/Open Size: 1 (typical) Type: Globe, Y-Pattern Body Material: 316 SS or 316L SS Operating Mode: On-Off, Fail Closed/Open Service Conditions: Inlet Pressure: 2500 psig (max) Inlet Temperature: 700 F (max) Cv Range: 0.15 to 1.0 Delta-P Shut-Off (Flow): 2500 psid (max) Delta-P Shut-Off (Rev. Flow): 1000 psid (max) Process Fluid: Water, Gas, or Steam Inlet Pressure: 2500 psig (max) Inlet Temperature: 700 F (max) Cv Range: 2.0 to 15.0 Operating Delta-P: 2500 psid (max) Process Fluid: Water, Gas, or Steam 6

ASME Code: Section III, Class 1, 2, and 3 N - Stamped Qualification: IEEE 323, 344, 382 and ANSI B16.

control steam pressure during plant transients below Main Steam Safety Valve setpoints.

The Target Rock Pressurizer Spray Valve is a Y-pattern unidirectional solenoid actuated valve used to control steam pressure and temperature in the steam generator.

motion Cage Guided Seat - Field replacement of all seating components Magnetic actuation requires electrical wiring only Abate TM Trim - Anti-cavitation trim to protect seat during in-service testing

9 ASME Code: Section III, Class 1, 2, and 3 N - Stamped Qualification: IEEE 323, 344, 382 and ANSI B16.41, ASME QME-1 Pressurizer Operated Relief Valve (PORV) Emergency Feedwater Control Valve Pressurizer Spray Valve The Target Rock PORV is a Y-pattern unidirectional solenoid actuated valve used to control steam pressure during plant transients below Main Steam Safety Valve setpoints. The Target Rock Emergency Feedwater Valve is a Y-Pattern unidirectional solenoid valve used to control the flow of feedwater in an emergency condition. The Target Rock Pressurizer Spray Valve is a Y-pattern unidirectional solenoid actuated valve used to control steam pressure and temperature in the steam generator. Separate Pilot Assembly - The valve pilot is nested into the main disc within the valve body Positive Position Indication - High performance magnetic reed switches are directly actuated by disc motion Cage Guided Seat - Field replacement of all seating components Magnetic actuation requires electrical wiring only Abate TM Trim - Anti-cavitation trim to protect seat during in-service testing Simplified Maintenance - Bolted bonnet design for quick access to internals - Screw adjustable reed switches reduces maintenance time Magnetically Actuated -- Stem - packing to wear from boron crystals - bellows to fail from cyclic fatigue Magnetically Actuated -- Stem - packing to wear from boron crystals - bellows to fail from cyclic fatigue Low Maintenance - Tested for over 100,000 cycles with borated water - air supply system to maintain On/Off or Modulating Designs - Fly-by-Wire modulating valve option - Magnetic actuation requires electrical wiring only Integral By-Pass Orifice Available Size: 2.5 x 4 (typical) Type: Globe, Y-Pattern Body Material: CS or 316 SS Operating Mode: On-Off, Fail Closed Size: 4 and 6 (typical) Type: Y-Body Forging Body Material: 316 SS, 316L SS, or CS Operating Mode: Modulating, Fail Closed/Open Size: 4 (typical) Type: Y-Body Forging Body Material: 316 SS or 316L SS Operating Mode: Modulating, Fail Closed/Open Inlet Pressure: 2500 psig (max) Inlet Temperature: 650 F (max) Cv Range: 15.0 to 60.0 Minimum Operating Pressure: 0 psig Operating Delta-P: 2500 psid (max) Process Fluid: Water and/or Steam Inlet Pressure: 2850 psig Inlet Temperature: 140 F Cv Range: 40.0 to Operating Delta-P: 2850 psid (max) Process Fluid: Condensate Inlet Pressure: 2485 psig Inlet Temperature: 650 F Cv Range: 40.0 to Operating Delta-P: 50 psid (typical) Process Fluid: Borated Water 7

Additional Target Rock Products Motor Operated

Pressure Class: 900, 1500, 2500 - Design

1050 F (max) - Body Materials: Carbon Steel &

1, IEEE 323, 344, 382 - ASME Code Section III

to 2 - Design Pressure: 3000 psig (max) -

Materials: Carbon Steel & 316 SS - Type:

Piston - Qualification: ANSI B16.34, B31.

Pilot Solenoid Valves - Supply Pressure: 150

Design Temperature: -40 F to 180 F - Flow Rate:

28 - Qualification: IEEE 382, 323, 344 I/P

Design Temperature: 32 F to 150 F - Input

5 Current Control Unit (CCU) - Uses pulse width

10 Additional Target Rock Products Motor Operated Gate and Globe Valves - Size: 1 to 8 - ANSI Pressure Class: 900, 1500, Design Pressure: 2500 psig (max) - Design Temperature: 1050 F (max) - Body Materials: Carbon Steel & 316 SS - Qualification: ANSI B16.34, B31.1, IEEE 323, 344, ASME Code Section III Class 1, 2, 3 Pressure Regulators - Size: 3/8 to 2 - Design Pressure: 3000 psig (max) - Design Temperature: 400 F (max) - Body Materials: Carbon Steel & 316 SS - Type: Diaphragm Element or Metal Bellows Sealed Piston - Qualification: ANSI B16.34, B ASME Code Section III Class 1, 2, 3 3-Way Pilot Solenoid Valves - Supply Pressure: 150 psi (max) - Voltage: 48 VDC and 125 VDC - Design Temperature: -40 F to 180 F - Flow Rate: Cv = Qualification: IEEE 382, 323, 344 I/P Converter - Supply Pressure: 30 psi (typical) - Design Temperature: 32 F to 150 F - Input Signal: 4-20ma - Output Signal: 3-15 psig - Qualification: IEEE 382, Canadian Registration: CRN# OF Current Control Unit (CCU) - Uses pulse width modulation to reduce coil heat load by one-half for continuously energized applications - Input: 90 to 140 VDC - Output: 60% of full rated current - Qualification: IEEE 344, 323 8

Testing Capabilities Target Rock has designed, engineered and constructed an extensive array of test facilities to support the design, development and qualification testing of its products.

cu ft. The accumulators supply two 4 and one 6 2500# test section inlet flanges with the test section discharge piping sized at 10.

11 Testing Capabilities Target Rock has designed, engineered and constructed an extensive array of test facilities to support the design, development and qualification testing of its products. All of Target Rock s flow test facilities are supported by complete instrumentation services for measuring and recording pressures, temperatures, flows, noise levels, accelerations, displacements, forces and strains. High Pressure Steam Testing Two high pressure (2700 psi) boilers, with a steam generating capacity of 10,000 #/hr, supply four high pressure, stainless steel accumulators with a total capacity of 85 cu ft. The accumulators supply two 4 and one # test section inlet flanges with the test section discharge piping sized at 10. This unique facility may be used to achieve extremely high steam flow rates for seat leakage and set point certificate testing or may be used for long duration, endurance type steam tests within the generating capacity of the boilers. Pressurized High Temperature Water Testing Four closed-loop, high temperature-pressurized water facilities constructed of stainless steel and rated at 3, F can provide continuous flow rates of up to 300 GPM across the test sections. Higher flow tests may be conducted by injecting steam over pressurized hot water using a 65 cu ft., 3,000 psi stainless steel accumulator. Cold Water Flow Facilities Various closed-loop ambient temperature water flow test facilities are available which can produce a wide range of flow rates and pressure drops. One such loop uses a 600 HP diesel to power a four stage centrifugal pump which delivers flow rates up to 1,000 GPM and differential pressures to 1,100 psid. High Pressure Air Two four stage compressors with a combined capacity of 40 CFM supply a bank of high pressure air receivers with a total storage capacity of 72 cu. ft. Extremely high flow rates can be achieved when this facility is used in a blowdown mode in conjunction with a 65 cu. ft. accumulator. Customer Support for the Life of the Valve Target Rock provides aftermarket support for all of our products; maintaining a high level of commitment to our customers. Our technical staff and service engineers provide prompt response and in-depth 24/7 support. Our field service capabilities include: Commissioning Troubleshooting Witness Start-Up Process, Start-Up Sequence Study Valve Repair, Refurbishment, Upgrade Tooling and Lapping Equipment Specifically Designed to Meet the Requirements of Our Equipment 9

Solenoid Operated Valves for Nuclear Power Generation First

Enertech, a business unit of Curtiss-Wright Flow Control

solenoid valves and accessories in the U.S.

Enertech is an engineering, manufacturing, distribution and

the unique requirements of the nuclear power industry.

instrumentation, heat exchangers, fluid sealing products,

dedication services, maintenance, repair, and engineering

Located in Southern California, Enertech is a member of the

Rock, Trentec), continuously supporting the global nuclear

12 Solenoid Operated Valves for Nuclear Power Generation First in Customer Service to the Global Nuclear Power Industry Enertech, a business unit of Curtiss-Wright Flow Control Company, is the exclusive distributor of Target Rock solenoid valves and accessories in the U.S. and select countries worldwide. Enertech is an engineering, manufacturing, distribution and service company committed to providing solutions to meet the unique requirements of the nuclear power industry. Enertech provides advanced valves, actuators, pumps, instrumentation, heat exchangers, fluid sealing products, snubbers, diagnostic and test equipment, qualification and dedication services, maintenance, repair, and engineering services to the nuclear power industry. Located in Southern California, Enertech is a member of the Nuclear Group of companies (EMD, va, Scientech, Target Rock, Trentec), continuously supporting the global nuclear power industry for over 50 years. Enertech enertech.cwfc.com enertech@curtisswright.com 2950 Birch Street Brea, CA BR R1 - ET

Severe Service Hydraulic Actuators for the Nuclear Power Industry. Enertech Nuclear Qualified Electro-Hydraulic Actuators

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