Attach 1 SOW Irradiator Recharge.pdf

N00173-19-R-RG05

PR 12-5022-19

STATEMENT OF WORK

Well Irradiation System with Sealed Sources”

01/14/2020

1. Introduction

The Naval Research Laboratory (NRL) at Washington DC has a need to replace a Well Irradiator System – including the radioactive sources. Well Irradiator System is required to be capable of performing calibrations in accordance with (IAW) the standards set forth National Council on Radiation Protection and Measurements Report No.112 – Calibration of Survey Instruments Used in Radiation Protection for the Assessment of Ionizing Radiation Fields and Radioactive Surface Contamination, ANSI N42.17A – Performance Specifications for Health Physics Instrumentation - Portable Instrumentation for Use in Normal Environmental Conditions, and ANSI N323 – Radiation Protection Instrumentation Test and Calibration.

2. Description

The contractor shall remove and replace NRL’s existing Well Irradiator System and Sealed Sources. The contractor shall design, deliver, and install a Well Irradiator System and sealed sources for NRL’s existing two wells. The existing wells are 10 inches in diameter and 20 feet deep, and in Building 83 Room 108 the ceiling/roof above the wells has no access port available. The design of the system shall minimize scatter (e.g. clear air path from source to detector platform, no platform material in-between detector chamber and source) and shall not require the demolition of the existing well or building structure (well and building structure shall remain intact).

3. Requirements

3.1 CLIN 0001: Sealed Radioactive Sources

3.1.1 The contractor shall deliver Two (2) sealed Cs-137 radioactive sources (min. 8 Ci not to exceed 12 Ci. each).

3.1.2 The contractor shall provide Sealed Sources and Devices Registry (SSDR) Certificates for each source.

SSDR Certificate information shall include:

a) Manufacturer name

b) Model number(s)

c) Maximum activity for each source.

3.1.3 The contractor shall ensure each source includes the following parameters:

a) National Institute of Standards and Technology (NIST) traceable.

b) Cesium Chloride

c) Stainless Steel Capsule

d) Magnetic (Ferro or para magnetic) able to retrieve with a magnet if dislodged from source platform

e) Point source geometry at a distance of 18 inches

f) Maximum Source Dimensions – Cylinder with a diameter no larger than ½ inch and no longer than 1 ½ inches.

The contractor shall delivery the parameter information to NRL within 60 days of award. The parameter information will be subject to NRL and NAVY Approval.

3.2 CLIN 0002: Facility Evaluation

3.2.1 The contractor shall perform two facility evaluations, pre and post source and Well

Irradiator System installation, with Monte Carlo N-Particle code shielding analysis of calibration room with affected well with NRLs established exterior criteria:

a) 2 mR/hr

b) 100 mrem per year

Pre-Facility Evaluation shall occur within 30 days of acceptance of the radioactive source parameter information by NRL.

Post-Facility Evaluation shall occur 30 days after installation of irradiator system.

3.3 CLIN 0003: Removal of NRL’s Well Irradiator System and Radioactive Sources

3.3.1 The contractor shall remove and dispose of NRL’s current well irradiator system, which includes: Elevator assembly (e.g. mechanism, platform, motor, etc.)

3.3.2 The contractor shall remove current radioactive sources. Both sources are presumed attached to their platforms. One platform and source is located at the bottom of the well and the height actuator for that well is not functional.

3.4 CLIN 0003: Well Irradiator System

3.4.1 The contractor shall design, install, and setup a Well Irradiator System in accordance with following requirements.

The contractor shall provide an automated irradiator control system that includes single computer control and with components that are fully integrated in the electronic system to function as a single program.

The system shall include a real time display of values and settings to measure data as listed below:

a) Exposure Rate o Units Roentgen, Rad, Sievert, and Gray per unit time (i.e. R/hr, rad/hr, Sv/hr, Gy/hr)

b) Cumulative Exposure o Units Roentgen, Rad, Sievert, and Gray (i.e. Rr, rad, Sv, Gy)

The system shall control all functions of irradiator system to include actuators for:

a) Source Platform

b) Irradiation Platforms

c) Attenuators

The system shall display the real time status of the following components:

a) High Radiation Area Safety System that includes:

o Proximity Sensor o Visual and Audible Alarms o Reset Switch

The system shall display the real time status and store the information for calibration reports for the following components:

a) Exposure Rate or Cumulative Exposure

b) Source Platform Position

c) Irradiation Platform Position

d) Attenuators Position

e) Calibration Room Temperature, Pressure, and Humidity Sensor o Logged in Software o This shall be an optional input (e.g. instruments can be calibrated and data printed if this sensor is not functional)

The contractor shall provide an irradiation routine function with the following capability (e.g. survey calibration, experiments):

a) User defined steps in computer via a routine or equivalent

b) User defined steps shall include all parameters for well configuration to perform instrument calibration or other irradiations.

c) One or two button operation to initiate routine o Steps are cycled through acquiring data Password Controlled o Failsafe – (e.g. power loss or errors shield the source)

The Contractor shall provide a system that is able to generate specified reports

a) Reporting option that includes necessary information (e.g. duration, position of platforms, calculated dose and/or dose rate at each position) for:

o Experiment irradiation o Calibrations

The Contractor shall provide a Physical emergency off button at operator’s station

The Contractor shall provide a durable infrastructure with moving components, with the ability to operate the source platform manually, and manual switches.

The Contractor shall provide an irradiation platform that is able to be placed over the well (opening is 10 inches) as described below:

a) Able to mount survey instruments in a consistent repeatable manner to platform

b) Opening in platform to eliminate attenuation in the direct path from the source to the detector chamber

The Contractor shall design the system such that a demolition of the facility is not required for installation

The Contractor shall deliver a source platform with custom source holder for radioactive sources such as:

a) Materials: Low Z Metal (e.g. Steel or Aluminum)

b) Source firmly attached to source platform

The Contractor shall deliver a system for which the elevator will comprise of:

a) Movement system designed to prevent a stuck platform

b) Designed to fit or adaptable to fit our current well configuration

c) Accurate remote operation via the computer controls, with an accurate numeric display on the computer (both accurate within 0.5 cm)

d) Prevents movement of source within 18 inches from the well opening

e) Platform driven using a secure material (e.g. steel chain) o Travel speed > 10 cm/s o Source Free Fall Prevention Mechanism

The Contractor shall deliver a system which temperature, humidity, and pressure monitoring system will be NIST calibrated.

The Contractor shall deliver a system with a proximity sensor at the High Radiation area boundary with features including the following:

a) Triggers when a High Radiation Area exists over the wells and a person passes the sensor boundary o This will place the irradiation system in a safe condition (e.g. shield closed, attenuator closed, source at the bottom of the well)

b) Sensor system should be located to ensure irradiation system is placed in a safe condition prior to personnel entering the High Radiation Area

The Contractor shall deliver a system with attenuators with these features:

a) Each controlled by actuators to allow any combination of these attenuators remotely via the computer control.

b) Attenuator status (e.g. open, closed) has a visual indication.

3.4.2 The contractor shall perform an initial calibration of the installed wells.

a) Calibrated to the ANSI N323 standard as NIST traceable

b) Provide a written calibration report, including calibration factors

3.4.3 The contractor shall provide training to the operators and will include at a minimum:

a) the operation of the new irradiation system

b) safety

c) calibration features - how to perform a calibration

d) performing quality control checks

e) performing irradiations

f) In-house routine maintenance

3.5 CLIN 0005: Maintenance and Calibration Service

3.5.1 The contractor shall provide the Manufacturer recommended maintenance and calibration service for 1 year (12 months).

3.5.2 Calibration Service shall include:

a) Calibrated to the ANSI N323 standard as NIST traceable

b) Provide a written calibration report, including calibration factors

3.6 CLINs 0006 – 0010: Optional Items

Optional Items are to be priced separately. The Government may choose to purchase any or none of the Optional Items. Any purchase of an Optional Item by the Government will be made at contract award.

3.6.1 CLIN 0006: Electrometers with the following specifications

a) ± 1000 V, 0.001 pC - 999.9 uC w/ 1 fC resolution, 0.001 pA – 500 nA

3.6.2 CLIN 0007: Ion Chambers

a) 30 cc, 100 cc, 800 cc

3.6.3 CLIN 0008: Survey Instrument Jigs

a) 10 custom made jigs

3.6.4 CLIN 0009: Storage Cask

a) Reduces exposure rate of old sources to 5 mR/hr on contact

3.6.5 CLIN 0010: Transfer of current sources

a) Redistribution, or

b) Full disposal of IAW NAVY Standard

4. Shipping

The contractor shall ship to NRL all irradiation system components, to include new sources

5. Place of Performance

Primary place of performance is on-site at NRL.

6. Delivery Schedule

The Delivery Schedule will be 180 days after award of contract.