SSP_57011_Rev_E.docx

SSP 57011 June 2014 Revision E Payload Verification Program Plan

International Space Station Program

Revision E

June 2014

Type 4

This document contains information that falls under the jurisdiction of the U.S. Department of Commerce Export Administration Regulations, 15 CFR 730-774, and is classified as EAR99. The Export, Re-export or re-transmission of this document or any of the data contained therein in violation of the Export Administration Regulations or other applicable U.S. export control laws and regulations is strictly prohibited. (JCD-016865-1)

National Aeronautics and Space Administration International Space Station Program Johnson Space Center Houston, Texas Contract No. NAS15-10000 CAGE Code 2B945

REVISION AND HISTORY PAGE

This is the first release on IPIC 04-30-03

Approved Early

Approved 11-13-07

02-22-08

Revision E also incorporates the following PIRNs:

57011-NA-0027 - SSCN 012607; 57011-NA-0030A, 57011-NA-0032B, 57011-NA-0034A, 57011-NA-0035, 57011-NA-0036, 57011-NA-0037A, 57011-NA-0038A, 57011-NA-0039, 57011-NA-0040, 57011-NA-0041, 57011-NA-0042, 57011-NA-0043, 57011-NA-0045, 57011-NA-0046, 57011-NA-0047, 57011-NA-0048A, 57011-NA-0049A, 57011-NA-0050, 57011-NA-0051B, 57011-NA-0053, 57011-NA-0054, 57011-NA-0057A, 57011-NA-0058, 57011-NA-0059A - SSCN 013159; 57011-NA-0061A, 57011-NA-0063, 57011-NA-0064 02-20-15

ERU: /s/Beth Mason 2-20-15 SSP 57011 June 2014 Revision E

International Space Station Program payload verification Program plan

PREFACE

This document establishes the program-level policy for assuring the compatibility of International Space Station (ISS) payloads with respect to each other and with respect to their interfaces with the ISS. It also documents the underlying principles and rationale upon which the policy is based. Detailed compatibility verification procedures and requirements for payload complements at the Element-Level and the ISS-Level are contained in Appendix D, Compatibility Verification Definition Sheets 1.

Element-Level and ISS-Level payload complement verification shall all be in accordance with this document.

APPROVED BY:

See Directive

Jesus Jimenez ESA ISS Exploitation Engineering Board European Space Agency, ESTEC

Date

APPROVED BY:

See Directive

Yusuke Matsumura Manager, Mission Engineering Integration JEM Mission Operations and Integration Center Human Spaceflight Mission Directorate Japan Aerospace Exploration Agency Partner Member, MPCB

Date

International Space Station Program payload verification Program plan

PREFACE (continued)

1 After each payload rack/non-rack/pallet/integrated external payload adapter/attached payload has been verified to comply with all requirements, it then becomes necessary to verify that the group of payload racks/non-racks/pallets/integrated external payload adapters (payload complement) that are to be operated together are compatible with each other, and that they can share resources appropriately. The next level of integration is thus referred to as Element-Level integration. It includes analyses of the interaction between payload racks/non-racks in a pressurized module with the module subsystem, between payload pallets/integrated external payload adapters on the truss with the ISS subsystem, and between attached payloads on the JEM-EF with the ISS subsystem. Beyond this, there are also questions that must be satisfied at the ISS-Level, such as whether vented contaminants from inside the station will affect attached payloads, whether the vibrations of an attached payload will affect the micro-gravity environment of a pressurized payload, and whether the Element-Level or ISS-Level payload complement is within its power budget.

INTERNATIONAL SPACE STATION PROGRAM

payload verification Program plan june 2014 concurrence payload verification Program plan june 2014 concurrence (CONTINUED)

Payload Verification Program Plan

June 2014 list of changes

All changes to paragraphs, tables, and figures in this document are shown below:

SSCN

Entry Date

Change

Paragraph(s)

001693

September 1999

Initial Release

All

003256

02-19-01

Revision A

All

005879

04-16-03

Revision B

All

010729

November 2007

Revision C

All

011463

April 2009

Revision D

All

014273

February 2015

Revision E

All

TABLE OF CONTENTS

appendiCES

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INTRODUCTION

PURPOSE

This document establishes the program-level policy for managing the verification and compatibility assessment analysis of International Space Station (ISS) payloads, and the validation of ISS systems to ensure that the ISS is ready to accept any visiting vehicle and its cargo, and that planned operations are within the capability of the on-orbit ISS, as bounded by the requirements defining the capability of the ISS system.

This document includes policies and procedures for compatibility verification of payload complements, both at the Element-Level and at the ISS-Level. These categories of verification shall be in accordance with this document. This document also defines Element-Level and ISS-Level verification requirements of the payload complement.

SCOPE

This document applies to all ISS program participants and defines and establishes organizational roles and responsibilities for implementing the verification process for Element-Level and ISS-Level payload integration and ISS system validation. It encompasses the verification planning as well as the acquisition, review, approval, closure, and tracking of verification data leading to certification of payload complement compatibility with the ISS systems and resources, and the system requirement validations ensuring the ISS is ready to support the planned operations. Element-Level payload safety verification shall be performed in accordance with SSP 50417, Integrated Experiment Hazard Assessment Generic Baseline. This document also describes the underlying principles upon which the payload verification program policy is based.

Some of the verification functions described in this document are the responsibility of the payload rack/non-rack/pallet/integrated external payload adapter integrators. Other verification functions are the responsibility of the International Partners (IPs) as well as the ISS Program Payload Engineering Integration (PEI) team for total Space Station verification. ISS validation tasks are the responsibility of the NASA ISS subsystem teams.

The detailed information required for verification of individual payloads, racks, non-racks, integrated external payload adapters, or pallets is not addressed in this document. Detailed verification requirements pertaining to pressurized module and attached sites payload integration and to ISS-Level payload complements are contained in Appendix D, Compatibility Verification Definition Sheets, of this document.

Appendix F is used to plan the closure of SSP 41000, System Specification for the International Space Station, requirements as determined necessary to validate the acceptance of any visiting vehicle to the ISS and planned operations until the next visiting vehicle arrival are within the capability of the as-built, as-designed ISS vehicle. Appendix F applies only to NASA.

Requirement applicability is driven by visiting vehicle type, manifest/duration of the stage, and planned stage operations. The validation tasks should be ISS integrated validation activities and should not be a duplication of lower level hardware verification or interface verification for the visiting vehicles.

precedence Inconsistencies among ISS program payload verification–related documentation shall be resolved by giving precedence in the following top–down order (also see Figure 1.5–1):

background information Payloads are categorized as pressurized or attached (unpressurized). Integration of pressurized payloads, which are any payloads operated inside the modules, is the responsibility of the pressurized payload integrator (e.g., the Payload Developer [PD] or Expedite the Processing of Experiments to Space Station [EXPRESS] Program). Attached payloads are integrated onto pallets (or porches) and the Japanese Experiment Module-Exposed Facility (JEM-EF), or the Columbus External Payload Facility (CEPF), which are also the responsibility of the attached payload integrator. Moreover, after each payload rack/non-rack payload/integrated external payload adapters/pallets/attached payloads have completed verification of all requirements, it then becomes necessary to verify that the group of payload racks/non-rack payloads/integrated external payload adapters/pallets/attached payloads that are to be operated together are compatible with each other and with ISS systems.

This integration and compatibility verification of pressurized racks/non-rack payloads and unpressurized pallets/integrated external payload adapters/attached payloads into (or onto) pressurized modules or attached payload sites is handled by the respective module or attached site IP. Beyond this, there are also some questions that must be satisfied at the ISS-Level, such as whether vented contaminants from inside the ISS will affect attached payloads, whether the vibrations of an attached payload will affect the microgravity environment of a pressurized payload, and whether the ISS-Level payload complement is within its power budget. This final compatibility assessment, which relies on inputs from the IPs, is the responsibility of the National Aeronautics and Space Administration (NASA).

process flow Figure 1.5-1 summarizes the generic payload verification process flow. Figure 1.5-2 summarizes the generic increment and stage analysis process schedule requirements for the Element-Level and ISS-Level complement leading up to the payload verification analysis process. For the complete, overall payload engineering integration template that includes expected activities and events leading up to launch, refer to Figure 3.1.3-1 of SSP 50200-04. This figure depicts key increment milestones identifying the planned start of developing Interface Control Documents (ICDs), Increment Definition and Requirements Documents (IDRDs), safety reviews, and configuration data.

change process This document will be updated using a Preliminary Interface Revision Notice (PIRN). The NASA Payloads Office (OZ) process used for approving PIRNs and Exceptions documented in SSP 57001, Section 5, will be used for review and approval of PIRNs for this document.

FIGURE 1.5-1 PAYLOAD VERIFICATION PROCESS FLOW

1-3

FIGURE 1.5-2 INCREMENTAL ELEMENT/ISS-LEVEL STAGE ANALYSIS PROCESS SCHEDULE

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Documentation applicable documents The following documents include specifications, standards, guidelines, procedures, handbooks, and other special publications. Specific date and revision number of documents under control of the Space Station Control Board can be found in SSP 50257, Program Controlled Document Index, or SSP 50258, Prime Controlled Document Index, or the ISS Payloads Office web page under Payloads Requirements Documents.

NSTS 1700.7B

ISS Addendum Safety Policy and Requirements for Payloads Using the International Space Station

SSP 30482

Volume 1 Electrical Power Specifications and Standards Volume 1: EPS Electrical Performance Specifications

SSP 30550

Volume 1 Space Station Program Robotic Systems Integration Standards Volume 1 Robotic Accommodation Requirements

SSP 41017

Part 1 Rack to Mini Pressurized Logistics Module Interface Control Document (ICD) Part 1

SSP 42004

Part 1 Mobile Servicing System (MSS) to User (Generic) Interface Control Document Part 1

SSP 42004

Part 2 Mobile Servicing System to User (Generic) Interface Control Document Part 2

SSP 52051

Volume 1 User Electric Power Specifications and Standards Volume 1: 120 Volt DC Loads

SSP 52051

Volume 2 User Electric Power Specifications and Standards Volume 2: Multi-Segment, Portable, 28 Volt DC Equipment

SSP 531XX

(Series Document) Unique Hardware Interface Control Document

SSP 540XX

(Series Document) Increment Definition and Requirements Document

SSP 571XX

(Series Document) Unique Payload Integration Agreement

SSP 572XX

(Series Document) Unique Hardware Interface Control Document

SSP 573XX

(Series Document) Unique Software Interface Control Document

SSP 576XX

(Series Document) Unique Payload Element-Level Engineering Analysis Report

PARTNER DOCUMENTS

european space agency (esa)

* Note: Per JESA 30000, Section 3, Space Station Joint Program Definition and Requirements Document, this document “meets or exceeds” SSP 30237, Space Station Electromagnetic Emission and Susceptibility Requirements, SSP 30238, Space Station Electromagnetic Techniques and SSP 30482, Volume 1, as determined by the ISS NASA/Boeing, ESA/DASA Power and EMC TIM of February 8-11, 2000 and the NASA/ESA/Boeing/Astrium EMC/Electrical Power System (EPS) TIM of October 2000; and as a result is acceptable for substitution for the CAPM program.

japan aerospace eXploration agency (JAXA)

JX-ESPC-XXXXXX

(Series Document) Unique Payload Hardware ICD

REFERENCE DOCUMENTS

JESA 30000

Section 3 APM Revision B June 1993 Space Station Joint Program Definition and Requirements Document

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Element-Level and ISS-Level verification process The verification process is divided into 4 major phases: planning, implementation, certification, and certification maintenance. The planning phase allows all parties to agree and document how and when the verification is to be completed. The implementation phase is the execution of the plan. The certification phase is the official declaration the implementation is complete and the requirements are satisfied. The certification maintenance phase focuses on changes to the configuration or requirements. Payload integration overview is shown in Figure 3.0-1. Programmatic information of the Element-Level and ISS-Level verification process is discussed in Paragraphs 3.2 and 3.3. SSP 50200-04, defines the IP’s and NASA’s PEI processes, products, interfaces, and schedules required for successful integration into the ISS.

Figure 3.0-1 payload integration overview

PAYLOAD VERIFICATION

Payload verification is performed in accordance with SSP 50200-04.

ELEMENT-LEVEL PAYLOAD VERIFICATION

The Element-Level analysis is the integration of payloads into an element. This analysis is necessary to ensure integrated payload complement compatibility with the appropriate ISS element, and supports ISS-Level analysis. The appropriate PEI team shall perform the Element-Level integration and analysis/verification.

Element-Level payload verification planning The Payload Verification Program Plan (PVPP) forms the plan for the Element-Level payload verification activities, invoked by SSP 50200-04. The PVPP encompasses all Element-Level payload requirements and these requirements are contained in Appendix D.

ELEMENT-LEVEL PAYLOAD VERIFICATION IMPLEMENTATION

The implementation phase consists of performing the analyses contained in Appendix D. Analysis based on initial ground testing will be employed since the ISS elements will be modified on orbit, ruling out any integrated Element-Level testing. These analyses will be based upon payload verification data, element data, and ISS data where applicable. NASA PEI will provide the necessary payload data and ISS data defined in Appendix D to the IP for Element-Level verification. The process flows for implementing these requirements can be seen in Figures 3.2.2-1 through 3.2.2-16 for process flow responsibility.* In the case that an Element-Level analysis identifies a potential noncompliance, Payloads Operations Guidelines and Constraints (GL&C) will be developed to eliminate the noncompliance. In the event that operational constraints can not eliminate the noncompliance an exception shall be requested through the Payload Control Board (PCB), the Multilateral Payloads Control Board (MPCB), the Program Integration Control Board (PICB), and/or the Multilateral Program Integration Control Board (MPICB) as appropriate. The MPCB/MPICB should only be used in cases where the noncompliance impacts another IP elements or payloads. As part of this process, NASA PEI will be the point of contact for working IP exceptions at the element and selected payload level. The process defined in the referenced SSP 57001, Pressurized Payloads Hardware Interface Control Document Template, will be used to process the exceptions.

*The process flows (Figures 3.2.2-2 through 3.2.2-16) are not requirements but only intended to show at a high level the NASA products and responsible organizations that provide Element and ISS payload complement verification support for the United States Laboratory (USL). It is recognized that both the European Space Agency (ESA) and Japan Aerospace Exploration Agency (JAXA) will have their own approaches for their Element verification responsibilities and these process flows do not show that.

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FIGURE 3.2.2-1 PAYLOAD ENGINEERING INTEGRATION PROCESS, ELEMENT-LEVEL AND ISS-LEVEl

FIGURE 3.2.2-2 PEI ELEMENT-LEVEL ELECTRICAL POWER STABILITY ANALYSIS PROCESS

FIGURE 3.2.2-3 PEI ELEMENT-LEVEL AND ISS-LEVEL EMI/EMC ANALYSIS PROCESS

fIGURE 3.2.2-4 PEI ELEMENt-LEVEL AND ISS-LEVEL C&DH ANALYSIS PROCESS FOR PAYLOADS

FIGURE 3.2.2-5 PEI ELEMENT-LEVEL AND ISS-LEVEL CHANNELIZED POWER/ANALYSIS PROCESS

FIGURE 3.2.2-6 PEI ELEMENT-LEVEL AND ISS-LEVEL CONSUMABLES ANALYSIS PROCESS

FIGURE 3.2.2-7 PEI ELEMENT-LEVEL AND ISS-LEVEL EXTERNAL CONTAMINATION/VENTING

FIGURE 3.2.2-8 PEI PRESSURIZED ELEMENT-LEVEL THERMAL ANALYSIS PROCESS

FIGURE 3.2.2-9 PEI ELEMENT-LEVEL AND ISS-LEVEL MICROGRAVITY ANALYSIS PROCESS

FIGURE 3.2.2-10 PEI ELEMENT-LEVEL HUMAN FACTORS/IVA ANALYSIS PROCESS

FIGURE 3.2.2-11 PEI ELEMENT-LEVEL ACOUSTICS ANALYSIS PROCESS

FIGURE 3.2.2-12 PEI ELEMENT-LEVEL AND ISS-LEVEL EVA ANALYSIS PROCESS

FIGURE 3.2.2-13 PEI ELEMENT-LEVEL AND ISS-LEVEL PAYLOAD FIELD OF VIEW ANALYSIS PROCESS

FIGURE 3.2.2-14 PEI ELEMENT-LEVEL THERMAL COMPATIBILITY OF ATTACHED PAYLOADS ANALYSIS PROCESS

FIGURE 3.2.2-15 PEI ELEMENT-LEVEL AND ISS –LEVEL INTEGRATED ATTACHED PAYLOAD COLLISION AVOIDANCE ANALYSIS PROCESS

FIGURE 3.2.2-16 PEI ELEMENT-LEVEL AND ISS-LEVEL ATTACHED PAYLOAD ROBOTICS ANALYSIS PROCESS

FIGURE 3.2.2-17 ISS-Level Plasma Analyses

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June 2014 Revision E

3-20 Element-Level payload verification certification Element-Level certification process consists of the baselining of the Payload Element-Level Engineering Analysis Report documenting the results of the Element-Level analysis process and providing the required Certificate of Flight Readiness (CoFR) endorsements as specified in SSP 50108, Certification of Flight Readiness Process Document. Each IP’s Payload Element-Level Engineering Analysis Report is approved internally by each IP. When an Element-Level exception occurs, it is coordinated between the IP and NASA PEI.

Element-Level payload verification certification maintenance The certification maintenance ensures that the Payload Element-Level Engineering Analysis Report and Payload Operations Guidelines and Constraints Element-Level Report are updated when necessary. When the payload configuration is modified an analysis or engineering judgment shall be made to determine if the modification invalidates the existing Payload Element-Level Engineering Analysis Report and Payload Operations Guidelines and Constraints Element-Level Report. Updates shall be completed per the schedule in Figure 1.5-2.

ISS-Level payload verification The ISS-Level analysis is the integration of the individual elements into the ISS vehicle. The NASA PEI team shall be the party responsible for performing and certifying the ISS-Level analysis. The ISS-Level analysis shall begin as soon as all the Element-Level analyses have been completed.

ISS-Level payload verification planning This document, the PVPP, forms the plan for the ISS-Level payload verification activities, invoked by SSP 50200-04. The PVPP encompasses all ISS-Level payload requirements. These requirements are contained in Appendix D.

ISS-Level payload verification implementation The implementation phase consists of performing the analyses contained in Appendix D. Analysis is the only verification method that will be employed since the integrated ISS will be modified on orbit, making integrated testing impossible. These analyses will be based upon Element-Level analyses as well as ISS data where applicable. The process flows for implementing these requirements can be seen in Figures 3.2.2-1 through 3.2.2-16.

In the case that an ISS-Level analysis identifies a potential noncompliance, Operational Guidelines and Constraints will be developed to eliminate the noncompliance. In the event that operational constraints can not eliminate the noncompliance, an exception shall be requested through the MPCB and/or the MPICB. The ISS-Level exception submittal, coordination, and approval process is referenced in SSP 57001.

ISS-Level payload verification certification ISS-Level certification process consists of the baselining of the Payload ISS-Level Engineering Analysis Report documenting the results of the ISS-Level analysis process and providing the required CoFR endorsements as specified in SSP 50108.

ISS-Level payload verification certification maintenance The certification maintenance ensures that the Payload ISS-Level Engineering Analysis Report and Payload Operations Guidelines and Constraints ISS-Level Report are updated when necessary. When an element is modified an analysis or engineering judgment shall be made to determine if the modification invalidates the existing Payload ISS-Level Engineering Analysis Report and Payload Operations Guidelines and Constraints ISS-Level Report. Updates shall be completed per the schedule in Figure 1.5-2.

ISS Stage Validation The ISS stage validation process supports ISS readiness for each ISS stage, documents compliance with the ISS system, and provides a traceable archive of data needed to sustain ISS operations. The process is used for the closure of all applicable ISS system specification requirements as determined necessary to validate that the ISS is ready to accept any visiting vehicle and its cargo, and that planned operations are within the capability of the on-orbit ISS, as bounded by the requirements defining the capability of the ISS system.

ISS stage validation planning This document, the PVPP, forms the plan for the ISS stage validation activities. The overall ISS performance capability is defined by the system level requirements documented in SSP 41000. The validation requirements are defined in each CVDS in Appendix F. The CVDSs and the decision criteria determining when a validation is needed are listed in Table F2.1-1.

ISS stage validation closure is performed with the implementation and completion of the activities identified during the stage validation planning process.

ISS stage validation implementation The implementation phase consists of performing the applicable validation activities per Table F2.1-1 and the CVDSs for the flights/stages planned to occur within a planning cycle defined by the IDRD, typically two Increments. The resulting data is collected.

In case ISS stage validation results identify potential non-compliances, issues and operational constraints are identified and documented in the closure summary report. If a noncompliance is not eliminated by operational constraints and is deemed to be of acceptable risk, a validation exception is requested through the VSP, T&VCP, or any higher level board deemed necessary by either VSP or T&VCP. In the event that the results of the validation show a requirement is not met, the issue would be presented to the stakeholder and either the VSP and/or T&VCP.

Analysis results require the additional step of a formal presentation to the VSP, unless other arrangements are made between subsystem/technical team and VSP co-chairs.

ISS stage validation closure The ISS stage validation closure process consists of consolidating all approved closure reports for a given flight/stage after the last closure, and documenting them in an Appendix in the ISS-Level Compatibility Analysis Report for the Increment in which that flight/stage occurs. Each Appendix addresses a single flight/stage. The Appendix consists of the completed compliance matrix for a given flight/stage, and all closure reports signed by the applicable stakeholders.

Closure reports for each applicable requirement or group of requirements are developed for each or multiple applicable flights/stages to document the outcome of the validation tasks and close the requirements tied to the task. Status tracking and accounting for work in the critical path for a flight Stage Operations Readiness Review (SORR) is performed using standard open paper tracking tools.

ISS stage validation closure maintenance Closure maintenance is to ensure that the ISS stage validation Appendix in the ISS-Level Compatibility Analysis Report is updated when necessary. The ISS-Level Compatibility Analysis initial and final versions for an Increment are released to EDMS. It is updated at each flight/stage SORR in a working version between the two releases.

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ABBREVIATIONS AND ACRONYMS

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GLOSSARY OF TERMS

Agreement – A documented recognition of the mutually understood requirements imposed on the ISS Program and the PD or Facility-Payload Integrator, pertaining to the eventual integration and operation of the Customer’s payload on-board the ISS.

Analysis – A technical evaluation process using techniques and tools such as mathematical models and computer simulation, historical/design/test data, and other quantitative assessments to calculate characteristics and verify specification compliance. Analysis is used to verify requirements compliance in cases where established techniques are adequate to yield confidence or where testing is impractical.

Analytical Integrator – The party responsible for performing the analyses necessary to support the integration of a component (e.g., a rack, pallet, etc.).

Attached Payload – A payload that is designed to operate in an unpressurized environment. It is placed on board the ISS on an external attachment point (e.g., S3 Truss, JEM-EF, CEPF, etc.).

Carrier – Structures that physically accommodate one or more pressurized racks, attached payloads, and/or external Orbital Replacement Units (ORUs) for ground integration into a launch vehicle for assembly on-orbit.

Checkout – An on-orbit activity that follows installation of a rack/pallet, or the installation of a maintenance/repair component. It demonstrates that the rack, pallet or hardware item is in proper working order. This activity does not involve re-verification (see verification, below).

Demonstration – The qualitative determination of compliance with requirements by observation during actual operation or simulation under preplanned conditions and guidelines.

Deviation – A noncompliance proposed before the Payload-unique ICD is baselined. It may require additional analysis or control to eliminate risk and is acceptable when properly documented. It is referred to a Control Board for adjudication.

Distributed Verification – Verification of requirements is performed at various places, by the people who design and build the equipment, rather than by a centralized verification authority. In other words, at the payload/rack/pallet level, each group is responsible for checking their own work. Also, the International Partners who supply elements are responsible for the Element-Level verification.

Element – A major component of the ISS. For example, in the NASA program, a pressurized module or an attached payload site is considered an element. For ESA, a single element may accommodate both pressurized and external attached payloads (e.g., Columbus module).

Element-Level Verification – Verification of a pressurized module which includes the payload complement and the pressurized module subsystems, or an attached payload site which includes the attached payload complement and ISS subsystems outside the pressurized module.

Element-Level Payload Complement – A collection of payloads that share a common spacecraft element and associated resources, i.e., S3 truss payload complement, lab module payload complement.

Engineering Analysis Report – The report documents the projected available payload resources, payload requirements, and the resulting complement compatibility for a specific ISS Stage.

Exception – A general term for any payload-proposed departure from requirements or interfaces. They may be further classified as deviations or waivers.

Experiment – A test or trial undertaken to discover or demonstrate something. On Station, this would be an activity performed using a payload, with or without human assistance.

Express Logistics Carrier – An attachment point platform with additional hardware for accommodating smaller attached payloads via express pallet adapters.

Express Rack– An International Standard Payload Rack (ISPR) with additional hardware for accommodating small sub–rack payloads, such as those in Shuttle middeck lockers and Standard Interface Rack (SIR) drawers.

Facility – A long term or permanent ISS resident that provides services and accommodations for experiments in a particular science discipline.

Facility Class Payload – A payload pre–installed with hardware subsystems for supporting a variety of experiments. Experiment–specific hardware is modular and subject to support separately. Facility hardware will occupy one or more rack location and remains on board the ISS for many increments, but is not an element itself.

Increment – That period of time (from crew up to crew down) which defines the available resources (i.e., crew plan, crew days, total power available, power consumption/allocation/transfer to systems, and power allocation for payloads), flight attitude, and accommodations (i.e., assembly/system objectives, utilization objectives, etc.).

Inspection – A physical measurement or visual evaluation of equipment and associated documentation. Inspection is used to verify construction features, drawing compliance, workmanship, and physical condition.

Integrator - A group that assembles multiple subcomponents to make one larger component.

International Space Station – The first space station to be comprised of major elements from many nations, including the United States, Russia, Europe, Japan, Canada, and Italy. The ISS is a place for humans to perform scientific and commercial research to improve the lives of others on Earth and in space.

IP-Equivalent – The International Partner equivalent piece of equipment, hardware or software.

ISS-Level Verification – Verification of multiple elements to assure station integrated compatibility with available ISS resources and constraints of the integrated payload complement.

ISS Program – A cooperative international program involving the following partners: ESA, NASA, and JAXA.

ISS Program–Provided – Provided by the ISS program to the Customer for use on the ground and/or in space. ISS program–provided items are provided only on Customer request, and usually for a fee.

Non-Rack Payload – Payload that is mounted and operated in the module aisle and requires power from a Utility Outlet Panel (UOP) or equivalent.

Payload – The load carried by a vehicle exclusive of what is necessary for its operation; especially, the load carried by an aircraft or spacecraft consisting of things (as passengers or instruments) necessary to the purpose of the flight. In the context of this document, payload refers to equipment that is used to conduct scientific or engineering research. In some cases, payloads will consist of a fully-integrated ISPR or pallet that interfaces and functions with the mechanical, thermal, electrical and data accommodations provided by the ISS. In other cases, the payload may be integrated into a rack, external payload adapter or pallet along with other, unrelated payloads, or may be a small stand-alone experiment in the aisleway. Thus the payload can be any size or shape, ranging from one that could fit in a stowage drawer or middeck locker location, to one that occupies several rack locations (see Facility–Class Payload) or an entire external pallet. Payloads are classified as either facility-class payloads or sub-rack/sub-pallet payloads. The Payload Engineering Integration function of the ISS program deals will all sizes of payloads although sub-rack payloads are typically managed by the payload developer, who integrates the sub-rack payloads into the EXPRESS rack or the facility-class payload.

Payload Engineering & Integration – The organization responsible for analytical integration of a payload rack/non-rack payload/integrated external payload adapter/pallet or payload hardware to comply with ISS/SSP imposed design–to…