N6230619K0010_salient_characteristics.pdf

SALIENT CHARACTERISTICS

FOR EQUIPMENT & INSTRUMENTS

TO COLLECT ACOUSTIC & NON-ACOUSTIC

PHYSICAL OCEANOGRAPHIC PARAMETERS

Prepared by:

Ocean Instrumentation Branch NP322

On: March 8, 2019

AOP/IOP & ACOUSTIC SALIENT CHARACTERISTICS 3/8/19

Salient_Characteristics_Optics_Package.docx PAGE - 2

TABLE OF CONTENTS

1) IN SITU APPARENT OPTICAL PROPERTIES (AOP) HYPERSPECTRAL RADIOMETER _______ 3

2) IN SITU AOP WINCH _______________________________________________________ 4

3) SURFACE AOP HYYPERSPECTRAL RADIOMETER _________________________________ 5

4) CTD SENSOR _____________________________________________________________ 6

5) TRANSMISSOMETER _______________________________________________________ 7

6) FLUOROMETER AND TURBIDITY SENSOR ______________________________________ 8

7) FLUOROMETER AND BACKSCATTERING SENSOR _________________________________ 9

8) pH SENSOR _____________________________________________________________ 10

9) INHERENT OPTICAL PROPERTIES (IOP) HYPERSPECTRAL SPECTRORADIOMETER ______ 11

10) BIOLUMINESCENCE COLLECTION ____________________________________________ 12

11) OCEANOGRAPHIC WINCH __________________________________________________ 13

12) ACOUSTIC DOPPLER CURRENT PROFILER ______________________________________ 15

13) SUBMERSIBLE DATA LOGGER AND DECK BOX __________________________________ 16

14) CAGE TO MOUNT/DEPLOY INSTRUMENTS ____________________________________ 17

15) SUBMERISIBLE ALTIMETER _________________________________________________ 18

16) CRATE CHARACTERISTICS __________________________________________________ 19

17) REPLACEMENT CABLES ____________________________________________________ 20

18) DATA COLLECTION COMPUTERS ____________________________________________ 21

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1) IN SITU APPARENT OPTICAL PROPERTIES (AOP) HYPERSPECTRAL

RADIOMETER

a) Unit shall provide full characterization of radiance and irradiance from 350 to 800 nm with at least 10 nm resolution.

b) Unit shall have a spectral bandwidth between 10 and 20 nm.

c) Unit shall free-fall at approximately 1 m/s while sampling at no less than 2 Hz.

d) Unit shall be designed for both tethered and profiling operation mode.

e) Unit shall have power input of 10 - 80 VDC.

f) Unit shall have a depth rating of no less than 250 meters.

g) Unit shall be capable of operation in temperature ranges of 0 – 45 degrees centigrade.

h) Unit shall have a pressure sensor.

i) Unit shall have hyperspectral surface reference sensor.

i) Cable for the reference sensor should be no less than 40 meters

j) Unit shall come with no less than 500 m of deployment cable.

i) Or maximum communication length – whichever is less – as determined by the manufacturer of the instrument.

k) Spare cable – see section 17.

l) Unit should have own data acquisition, power control, and communication system.

m) Unit shall be capable of operating with Windows 10 Operating System.

n) Unit should have own documentation for proper use.

o) Unit shall be supplied with a one (1) year warranty.

p) Unit shall be repaired and recalibrated in accordance with section 20.2.1 of the SOW.

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2) IN SITU AOP WINCH

a) Unit motor should be able to pay out at a speed sufficient to allow the AOP to free-fall at no less the 1 m/s and prevent the cable on the drum from bird-nesting.

b) Unit shall have a manual release break to allow the drum to free wheel.

c) Unit shall have a capacity of at least 500 m of ¼” (6.3mm) diameter cable

d) Unit shall be supplied with no less than 400 m of ¼” (6.3mm) deployment cable

e) Unit shall be capable of no less than 650 lbs. (300 kg) bare drum line pull

f) Unit shall have no less than 120 m/min bare drum line speed with adjustable speed control

g) Unit shall incorporate an Focal Technologies Model 180 eight (8) conductor slip ring

h) Shall have either a screw-type or electrical level wind with manual clutch and hand wheel

i) Unit shall have aluminum or 316 stainless steel construction with epoxy powder coat paint for marine applications

j) All fasteners, shafts and level wind should be 316 stainless steel with isolation from other dissimilar metals

k) Unit shall be supplied with 1.5” (3.8cm) holes for deck bolt pattern to accommodate 24”

(61cm) centers

l) Unit shall be pre-wrapped with appropriate cable

m) Unit shall be supplied with a power cable of no less than 30 m and with the appropriate plug to accommodate the power requirements.

n) Unit shall be provided with a sturdy, reusable shipping crate capable of lasting up to 10 years. Refer to Crate Characteristics.

o) Unit shall be controlled/operated at a height of no less than 32” (81.3cm) and no more than 48” (121cm) and a stand may be used to accommodate.

i) If a stand is needed, the stand shall be sturdy to allow the winch to sit at an appropriate height for the user. The stand should be comprised of the same material as the winch with the same epoxy powder coat. The stand and the winch should be easy to attach to one another with no less than four (4) sturdy bolts. All fasteners should be 316 stainless steel with isolation from other dissimilar metals. The stand should accommodate the deck hole pattern (section k above).

p) Spare cable – see section 17.

q) Unit should have own documentation for proper use

r) Unit shall be supplied with a one (1) year warranty

s) Unit shall be repaired in accordance with section 20.2.14 of the SOW.

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3) SURFACE AOP HYYPERSPECTRAL RADIOMETER

a) Unit shall provide full characterization of radiance and irradiance from 350 to 800 nm with at least 10 nm resolution

b) Unit shall have a spectral bandwidth between 10 and 20 nm.

c) Unit shall have power input of 10 - 80 VDC.

d) Unit shall be capable of operation in temperature ranges of 0 – 45 degrees centigrade

e) Unit shall have hyperspectral surface reference sensor

i) The reference sensor should connect directly to the controller box as the other sensors so only one deck cable is required.

ii) Cable for the reference sensor should be no less than 25 meters

f) Unit shall have a field of view no less than 0 – 75 degrees

g) Unit shall be supplied with no less than 150 m of deck cable.

i) The deck cable will come with a reel to store the cable. The reel can be operated manually and/or air powered. If a hand crank is present, the crank shall be removable. The reel shall be able to accommodate the entire length of the cable. A separation of the ends of the cable shall be included such that the end connecting to the power supply is no less than 15 m and the remaining cable connects to the instruments.

(1) If the reel is air powered, the reel will be supplied with the appropriate hose of no less than 10 m.

(2) Reel shall be supplied with 1.5” (3.8cm) holes for deck bolt pattern to accommodate 24” (61cm) centers

h) Unit should have own data acquisition, power control, and communication system.

i) Unit shall be capable of operating with Windows 10 Operating System

j) Spare cable – see section 17.

k) Unit should have own documentation for proper use

l) Unit shall be supplied with a one (1) year warranty

m) Unit shall be repaired and recalibrated in accordance with section 20.2.2 of the SOW.

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4) CTD SENSOR

a) Unit shall have a conductivity range of no less than 0 to 95 S·m-1

b) Unit shall have a conductivity accuracy of no less than ±0.0005 S·m-1

c) Unit shall have a temperature range of no less than -5 to +35 °C

d) Unit shall have a temperature accuracy of no less than ±0.005 °C

e) Unit shall have a pressure rating of no less than 600m

f) Unit shall have a pressure accuracy of no less than ±0.1% of full scale

g) Unit shall have a memory storage of no less than 64 MB

h) Unit shall have an operating life of no less than 60 hours when running on batteries

i) Unit shall have the capability to run off a standard sea cable for power and communication.

j) Unit shall have a RS-232 output

k) Unit shall be capable of running no less than six (6) instruments.

l) Unit shall come with an A/D channel

m) Unit shall come with all necessary software to acquire and process data.

n) Unit shall be capable of operating with Windows 10 Operating System

o) Spare cable – see section 17.

p) Unit should have own documentation for proper use

q) Unit shall be supplied with a one (1) year warranty

r) Unit shall be repaired and recalibrated in accordance with section 20.2.3 of the SOW.

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5) TRANSMISSOMETER

a) Unit shall be compatible with standard CTD package

b) Unit shall have power input of 7-15 VDC.

c) Unit shall provide beam transmission at a user-defined wavelength to be specified at the time of purchase.

d) Unit shall have a depth rating of no less than 6000 m.

e) Unit shall have an optical path length of ten (10) to twenty-five (25) cm to be specified at the time of purchase.

f) Unit shall be capable of operation in temperature ranges of 0-35 degrees centigrade.

g) Unit shall have a sampling rate of no less than 2Hz.

h) Unit shall have a spectral bandwidth of no greater than 25 nm.

i) Unit shall come with all necessary software to acquire and process data.

j) Unit shall be capable of operating with Windows 10 Operating System

k) Spare cable – see section 17.

l) Unit should have own documentation for proper use

m) Unit shall be supplied with a one (1) year warranty

n) Unit shall be repaired and recalibrated in accordance with section 20.2.4 of the SOW.

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6) FLUOROMETER AND TURBIDITY SENSOR

a) Unit shall be compatible with standard CTD package

b) Unit turbidity sensor shall measure at a wavelength of no less than 700 nm

c) Unit turbidity sensor shall have a sensitivity of no less than 0.013 NTU

d) Unit turbidity sensor shall have a range of about 0-20 NTU

e) Unit fluorescence sensor shall measure at a wavelengths between 400 to 720 nm

f) Unit fluorescence sensor shall have a sensitivity of no less than 0.025 µg·l-1 Chl

g) Unit fluorescence sensor shall have a range of about 0-45 µg·l-1 Chl

h) Unit shall have a RS-232 output

i) Unit shall have a output signal between 0-5 V

j) Unit shall have a data memory of no less than 90,000 samples

k) Unit shall have a sample rate of no less than 8 Hz.

l) Unit shall have a temperature range of between 0-35 °C

m) Unit shall have a depth rating of no less than 600m

n) Unit shall come with all necessary software to acquire and process data.

o) Unit shall be capable of operating with Windows 10 Operating System

p) Spare cable – see section 17.

q) Unit should have own documentation for proper use

r) Unit shall be supplied with a one (1) year warranty

s) Unit shall be repaired and recalibrated in accordance with section 20.2.5 of the SOW.

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7) FLUOROMETER AND BACKSCATTERING SENSOR

a) Unit shall be compatible with standard CTD package.

b) Unit shall have a depth rating of no less than 600 meters

c) Unit shall have RS-232 output

d) Unit shall operate in temperatures between 0 – 30 degrees Centigrade

e) Unit shall have a sample rate of no less than 4 Hz

f) Unit scattering wavelengths shall cover the range between 400 and 700 nm

g) Unit shall have the capability to measure no less than four (4) scattering wavelengths simultaneously.

h) Unit fluorescence sensor shall measure at wavelengths between 400 to 720 nm

i) Unit fluorescence sensor shall have a sensitivity of no less than 0.025 µg·l-1 Chl

j) Unit fluorescence sensor shall have a range of about 0-45 µg·l-1 Chl

k) Unit shall come with all necessary software to acquire and process data.

l) Unit shall be capable of operating with Windows 10 Operating System

m) Spare cable – see section 17.

n) Unit should have own documentation for proper use

o) Unit shall be supplied with a one (1) year warranty

p) Unit shall be repaired and recalibrated in accordance with section 20.2.6 of the SOW.

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8) pH SENSOR

a) Unit shall be compatible with standard CTD package

b) Unit should have a measurement range of for the entire pH scale (0-14)

c) Unit should have an accuracy greater than ±0.3pH

d) Unit should have a time response to reach final value better than 3 seconds

e) Unit should have electrical input power between 5-25 VDC at ~ 15mA

f) Unit should have electrical output signal range between 0 to +8V

g) Unit should have a depth rating of no less than 1000m or better

h) Unit shall come with all necessary software to acquire and process data.

i) Unit shall be capable of operating with Windows 10 Operating System

j) Spare cable – see section 17.

k) Unit should have own documentation for proper use

l) Unit shall be supplied with a one (1) year warranty

m) Unit shall be repaired and recalibrated in accordance with section 20.2.7 of the SOW.

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9) INHERENT OPTICAL PROPERTIES (IOP) HYPERSPECTRAL

SPECTRORADIOMETER

a) Unit shall provide in situ hyperspectral beam attenuation and absorption, 400 to 720 nm with 4 nm resolution.

b) Unit shall have a spectral bandwidth between 10 and 20 nm.

c) Unit shall have an optical path length of twenty-five (25) cm

d) Unit shall have power input of 10 - 35 VDC.

e) Unit shall have a depth rating of no less than 500 meters.

f) Unit shall be capable of operation in temperature ranges of 0 – 40 degrees centigrade.

g) Unit shall have a pressure sensor.

h) Unit shall have a temperature sensor

i) Unit shall have a sampling rate of no less than 2Hz.

j) Unit shall have submersible pump.

k) Unit should have own data acquisition, power control, and communication system.

l) Unit shall come with all necessary software to acquire and process data.

m) Unit shall be capable of operating with Windows 10 Operating System

n) Spare cable – see section 17.

o) Unit should have own documentation for proper use

p) Unit shall be supplied with a one (1) year warranty

q) Unit shall be repaired and recalibrated in accordance with section 20.2.8 of the SOW.

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10) BIOLUMINESCENCE COLLECTION

a) Unit shall provide high resolution, calibrated data of mechanically stimulated bioluminescent organisms.

b) Unit should be easy to maintain in a field setting.

c) Unit shall have a depth rating of no less than 600 meters.

d) Unit shall be capable of operation in temperature ranges of 0 – 35 degrees centigrade.

e) Unit shall be able to maintain flow rate of no less than 320 mL/s.

f) Unit’s detection chamber shall exhibit > 95% reflectance between 430 – 700 nm.

g) Unit shall have be capable of measuring in the dynamic range of 2.5 e6 – 2.5 e13 Photons/s

h) Unit’s data output shall be digital and RS232.

i) Unit’s data sampling rate shall be no less than 60 Hz.

j) Unit should come with all associated hardware and software for the collection of and processing of data.

k) Unit shall be capable of operating with Windows 10 Operating System

l) Spare cable – see section 17.

m) Unit should have own documentation for proper use

n) Unit shall be supplied with a one (1) year warranty

o) Unit shall be repaired and recalibrated in accordance with section 20.2.9 of the SOW.

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11) OCEANOGRAPHIC WINCH

a) Unit should come with a constant tension system to prevent the cable from bird nesting

b) Unit motor should be no less than 7.5 HP

c) Unit shall have a capacity of 600m of 3/8” (9.5 mm) diameter cable

d) Unit shall be supplied with no less than 600 m of 3/8” (9.5 mm) of double armored seven

(7) conductor cable

i) Or maximum communication length – whichever is less – as determined by the manufacturer of the instrument.

ii) Termination of the cable for connection to the instruments shall be a solid core type that minimizing twisting/flexing of the termination to prolong life.

e) Unit shall be capable of no less than 2000 lbs. (907 kg) bare drum line pull

f) Unit shall have no less than 60 m/min bare drum line speed

g) Unit shall incorporate a Focal Technologies Model 180 eight (8) conductor slip ring

h) Shall have either a screw-type or electrical level wind with manual clutch and hand wheel

i) Unit shall have 316 stainless steel construction with epoxy powder coat paint for marine applications

j) All fasteners, shafts and level wind should be stainless steel with isolation from other dissimilar metals

k) Unit shall operate at 200-240 VAC, one or three phase, 48-62 Hz electrical power

i) Unit shall be supplied with a power cable of no less than 20 m and be supplied with the appropriate connector to plug into ship power (Hubbell AC Plus 5100P9W).

l) Unit shall be supplied with 1.5” (3.8cm) holes for deck bolt pattern to accommodate 24”

(61cm) centers

m) Unit shall be provided with a sturdy, reusable shipping crate capable of lasting up to 10 years. Refer to Crate Characteristics.

n) Unit shall come with lifting points to lift the unit via crane and accommodate ½” shackles.

o) Lifting the unit by the lift points should be completed in a balanced and level manner.

p) The unit should come with a lifting bridle that attaches to the lifting points and a single ring that attaches to the crane. The bridle shall meet US NAVY standards and regulations.

q) Unit shall have the ability to be moved via pallet jack or forklift with supplied space to accommodate the forks.

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r) Prefer the unit to have the capability to fit inside a standard shipping container

i) If the unit cannot fit into a standard shipping container and a shipping crate is not feasible, the unit must come with a ‘box-in-a-box’ design where the entire winch can be enclosed to facilitate shipping and still maintain access to lifting points and forklift fork slots.

s) The unit should come with a dual drum configuration where one drum will be used with the optical package to communicate and record the data in real-time. The second drum will be used strictly for lifting and shall have the following requirements

i) 200-240 VAC, one or three phase, 48-62 Hz electrical power

ii) No less than 7.5 HP

iii) Digital speed control, full torque creep speed to 60 Hz speed, constant hp above 60

Hz speed, adjustable minimum and maximum frequency limits, and selectable preset speeds, dynamic braking resistors for 100% payout rating.

iv) The portable winch is a connectorized system. 60-foot long power and control cables are included. The cables are hardwired to the power / control skid, terminated with connectors, and receptacles provided on the winch skid

v) Power / Control Skid features ‘box-in-a box’ design. Rectangular framework with fabricated, removable side and top covers protect drive panel from impact of ‘green’ water. Drive panel is NEMA-4x rated electrical enclosure with closed loop package

A/C unit and heating resistors. Open hatch covers to dissipate heat when operating winch.

vi) One (1) cable drum designed for ROCHESTER Type 7-H-314A cable with grooved drum shell with appropriate level wind (Optical Package Drum).

vii) One (1) rope drum designed for no less than ½” synthetic rope with smooth core.

Appropriate level wind with ratio to ‘open spool’ soft line. Level wind rollers off set

3 inches to pass scientific mooring jewelry (Lifting Drum).

t) Spare cable – see section 17.

u) Unit should have own documentation for proper use

v) Unit shall be supplied with a one (1) year warranty

w) Unit shall be repaired in accordance with section 20.2.14 of the SOW.

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12) ACOUSTIC DOPPLER CURRENT PROFILER

a) Unit shall be small enough to mount on the deployment package with all the other sensors.

b) Unit shall have a depth rating of no less than 300 meters.

c) Unit shall operate between 12-48 V DC

d) Unit shall operate in temperature between 0 to 40 °C

e) Unit shall have a temperature accuracy of 0.1 °C and a resolution of 0.01 °C

f) Unit shall have a solid state magnetometer for a compass

g) Unit shall have no less than 5 beams for mean currents and turbulence

h) Unit shall have a water velocity measurement profiling range of 10 cm to 25 meters

i) Unit shall have a water velocity measurement minimum accuracy of 0.3% of measured value ± 0.3 cm/s

j) Unit shall have a water velocity measurement max sampling rate of no less than 16 Hz.

k) Unit shall have a high resolution (HR) option with a profiling range of 10 cm to 8 m.

l) Unit shall have a data recording capability of no less than 256 GB

m) Unit shall have capability to communicate via Ethernet cable.

n) Unit shall have capability to communicate via RS-232

o) Unit shall be capable of transmitting real-time data up the sea cable to view and record data to a topside (on deck) computer while still recording internally..

p) Unit should come with all associated hardware and software for the collection and processing of data.

q) Unit shall be capable of operating with Windows 10 Operating System

r) Spare cable – see section 17.

s) Unit should have own documentation for proper use

t) Unit shall be supplied with a one (1) year warranty

u) Unit shall be repaired and recalibrated in accordance with section 20.2.10 of the SOW.

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13) SUBMERSIBLE DATA LOGGER AND DECK BOX

a) Unit shall be able to handle all data types on the cage

b) Unit shall come with no less than five (5) channels.

c) Unit shall have independent output voltages of no less than 12 to 24 VDC

d) Unit shall have an operating temperature of no less than -2.5 to 40 °C

e) Unit shall have a memory capacity of no less than 256 MB

f) Unit shall have a depth rating of no less than 600 m

g) Unit shall be compatible with RS-232 interfaces

h) Unit shall be able to activate/deactivate individual sensors

i) Unit shall be compatible with all maximum baud rates from the attached instruments.

j) Unit shall be able combine all data from individual instruments, send data through the sea cable, and parse out the data within the deck box to connected computers with appropriate software to run, view, and collect data in real-time from each instrument, either individually with commercial software or into a single program developed commercially or in-house.

k) Unit shall come with all necessary software to acquire and process data.

l) Unit shall be capable of operating with Windows 10 Operating System

m) Spare cable – see section 17.

n) Unit should have own documentation for proper use

o) Unit shall be supplied with a one (1) year warranty

p) Unit shall be repaired and recalibrated in accordance with section 20.2.11 of the SOW.

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14) CAGE TO MOUNT/DEPLOY INSTRUMENTS

a) Unit shall have be comprised of no less than marine grade stainless steel (316 SS)

b) Unit shall have ability to be deployed via standard sea cable winch system on board T-

AGS vessels

c) Unit shall be large enough to hold all instruments in a balanced format where most/all measured parameters are collected at the same level.

i) Unit shall have a width and depth of no less the 2’ (61 cm) square and a height of no less than 4’ (121.9 cm), not including the bridle.

ii) The overall height of the cage, including the bridle, should not exceed 5’ (152.4 cm).

d) The unit shall have vertically adjustable horizontal brackets that will allow for a user configurable placement/orientation of any and all instruments to be attached.

e) Unit shall have a bridle to a single point connection with a standard sea cable (b above)

f) Unit shall have rubber bumpers for collision protection.

g) Unit shall have rubber bumpers/feet on the bottom to help protect from drops and vibration from the ship.

h) The unit shall be supplied with a box/shipping crate to transport the unit with attached instruments.

i) The box shall be large enough to accommodate the rubber bumpers and feet so that removing the bumpers will not be required.

i) Unit should have own documentation for proper use

j) Unit shall be supplied with a one (1) year warranty

k) Unit shall be repaired and recalibrated in accordance with section 20.2.13 of the SOW.

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15) SUBMERISIBLE ALTIMETER

a) Unit shall be compatible with standard CTD package

b) Unit shall have an operating depth of no less than 6000m

c) Unit shall have a data output of RS-232

d) Unit shall be programmable.

e) Unit shall be small, no larger than 3” diameter

f) Unit shall come with all necessary software to acquire and process data.

g) Unit shall be capable of operating with Windows 10 Operating System

h) Spare cable – see section 17.

i) Unit should have own documentation for proper use

j) Unit shall be supplied with a one (1) year warranty

k) Unit shall be repaired and recalibrated in accordance with section 20.2.12 of the SOW.

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16) CRATE CHARACTERISTICS

a) The crate should be comprised heavy grade aluminum with an epoxy powder coat paint for marine applications.

b) The crate should have the capability to anchor the winch and ancillary components to the crate to minimize movement within the crate during shipping

c) The crate should have the capability to withstand the weight of the winch, wrapped cable, and any ancillary components.

d) The crate should have the capability to facilitate the removal and installation of the winch from/to the crate

i) Able to remove the top and the walls

e) The crate should be durable enough to withstand multiple installs/removals, for 4-5 per year for 10+ years

f) The crate should have lifting points to facilitate lifting the crate into and out of place via crane, forklift, and pallet jacks.

i) Lifting points for the crane should be large enough to accept a lifting shackle of no less than ½ inch in diameter.

g) Unit should have own documentation for proper use

h) Unit shall be supplied with a one (1) year warranty

i) Unit shall be repaired and recalibrated in accordance with section 20.2.17 of the SOW.

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17) REPLACEMENT CABLES

a) Per piece of equipment, a spare/replacement cable shall be provided.

b) Spare/replacement cables shall also include deck cables.

c) Spare/replacement cables shall also include deployment cables.

d) Each spare cable shall be clearly labeled for easy identification.

e) Each cable shall be supplied with a one (1) year warranty free of manufacture defects and not to include damage of normal wear and tear.

f) Cables shall be repaired in accordance with section 20.2.15 of the SOW.

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18) DATA COLLECTION COMPUTERS

a) 2U rackmount computer systems with the following minimal requirements

i) The unit’s processor shall be an Intel I7-8700 Hexa-Core with UHD Graphics.

ii) The unit’s memory shall be 32GB DDR4.

iii) The unit’s controller shall be an Intel Z370 chipset.

iv) The unit’s hard drive shall be 2 x 1.0 TB SATA Drive.

v) The unit’s optical drive shall be a Slim SATA DVD-RW.

vi) The unit’s power supply shall be 400W.

vii) The unit’s operating system shall be Windows 10 Professional.

viii) The unit’s software shall be Microsoft Office.

ix) The unit’s warranty shall be three (3)-years.

x) The unit shall have installed an 8 port MOXA CP-168U 8 port RS-232 universal PCI serial board and be supplied with the compatible 8 port DB9 serial octopus connection cable.

b) Unit shall be repaired in accordance with section 20.2.16 of the SOW.