INTERNATIONAL ATOMIC ENERGY AGENCY 

DEPARTMENT OF SAFEGUARDS

DESIGN INFORMATION 

QUESTIONNAIRE *

IAEA USE ONLY

N-94 (11-2020)

SEPARATE STORAGE INSTALLATIONS

APPROVED BY OMB: NO. 3150-0056 EXPIRES: 11/30/2023

Estimated burden per response to comply with this mandatory collection request: 360 hours. NRC is 

required to collect this information for reporting to IAEA from facility licensees appearing on the U.S. 

Eligible List. Send comments regarding burden estimate to the FOIA, Library, and Information 

Collections Branch (T-6 A10M), U.S. Nuclear Regulatory Commission, Washington, DC 20555-0001, 

or by e-mail to Infocollects.Resource@nrc.gov, and the OMB reviewer at: OMB Office of Information 

and Regulatory Affairs, (3150-0056), Attn: Desk Officer for the Nuclear Regulatory Commission, 725 

17th Street NW, Washington, DC 20503; e-mail: oira_submission@omb.eop.gov. The NRC may 

not conduct or sponsor, and a person is not required to respond to, a collection of information unless 

the document requesting or requiring the collection displays a currently valid OMB control number.

The purpose of this document is to 

obtain the facility design information 

required by the Agency in order to 

discharge its safeguards responsibilities. 

It will also serve as a checklist for 

examination of design information by 

Agency inspector(s). If, in any area, 

insufficient space is available add further 

shee ts to the extent necessary.

TYPE

IAEA USE ONLY 

COUNTRY 

COUNTRY OFFICER

DATE OF INITIAL DATA

VERIFICATION

LAST REVIEW AND UPDATING

Separate storage installations
N-94 (11-2020)

ALL FACILITIES

GENERAL INFORMATION

1. Name of the facility 

(include usual abbreviation)

2. Location and postal 

address

3. Owner 

(Legally responsible)

4. Operator 

(Legally responsible)

5. Description 

(Main features only)

6. Purpose

7. Status 

(e.g., planned; under construction, in 

operation; shut down; closed 

down; decommissioned)

8. Construction schedule dates 

(if not in operation) 

Start of Construction (MM/DD/YYYY) Commissioning (MM/DD/YYYY) Operation (MM/DD/YYYY)

9. Normal operating mode 

(days only, two shift, three shift; 

number of days/annum, etc.)

10. Facility layout 

(structural containment, fences, 

access, nuclear material storage 

areas, laboratories, waste disposal 

areas, routes followed by nuclear 

material, experimental and test areas, 

etc.) 

DRAWING(S) ATTACHED UNDER REF. NOs.

DRAWING(S) AND/OR MAPS ATTACHED UNDER REF. NOs.

12. Names and/or titles and address 

of responsible officers 

(for nuclear material accountancy and 

control and contact with the Agency. If 

possible attach organization charts 

showing position of officers) 

11. Sitting of facility 

(Maps showing in sufficient detail: 

location, premises and perimeter of 

facility, other buildings, roads, railways, 

rivers, etc.) 
GENERAL STORAGE DATA

13. Facility Description 

(indicating important items of 

equipment which use, produce or 

process nuclear material)

GENERAL FLOW DIAGRAM(S) ATTACHED UNDER REF. NOs.

N-94 (11-2020)

14. Design Capacity

15. Anticipated annual throughput 

and inventory 

(in the form of forward program 

indicating the proportion of various 

receipts and shipments)

16. Types of units handled at the 

facility

NUCLEAR MATERIAL DESCRIPTION AND FLOW

17. Main material description 

(In general) 

i) Physical (mechanical) form and 

dimensions (for the items stored, 

attach drawings) 

vi) Means of nuclear material 

identification

vii) Types of containers, packaging

viii) Radiation level at nuclear material 

location

ix) Other nuclear material in the 

facility (Quantity, form and location of 

inventory) not already specified

IF NECESSARY, ATTACH DRAWING(S)

DRAWING(S) ATTACHED UNDER REF. NOs

iv) Range of weight of nuclear material

v) Cladding materials

18. Schematic flowsheet for 

nuclear material 

(identifying measurement points, 

accountability areas, inventory 

location, etc., for operator purposes) 

DIAGRAM(S) ATTACHED UNDER REF. NOs. 

ii) Chemical form (Indicate chemical 

composition or main alloy constituents

iii) Enrichment range and Pu content 
N-94 (11-2020)

HANDLING OF NUCLEAR MATERIAL

19. Description of each nuclear 

material storage area 

(Inventory location)

24. Shielding 

(For storage and transfer)

DIAGRAM(S) ATTACHED UNDER REF. NOs.

20. Design range of inventories of 

nuclear material in each storage 

area

21. Method of positioning of 

nuclear material in storage

IF NECESSARY, ATTACH DRAWING(S)

22. Routes and equipment used for 

movement of nuclear material 

(If applicable)

DRAWING(S) ATTACHED UNDER REF. NOs.

23. Frequency of receipt and 

shipment

25. Basic measures for physical 

protection of nuclear material

PROTECTION AND SAFETY MEASURES

26. Specific health and safety rules 

for inspector compliance 

(If extensive, attach separately)

NUCLEAR MATERIAL ACCOUNTANCY AND CONTROL

27. System description 

give description of: 

• the nuclear material accountancy 

system; 

• the method of recording and reporting 

accountancy data and establishing 

material balances 

• the procedures for account 

adjustment after inventory and 

correction of mistakes, etc. 

under the following headings: 

i) General

SPECIMEN FORMS USED IN ALL PROCEDURES ATTACHED UNDER REF. NO.

iii) Shipments (including wastes)

ii) Receipts 

(including method of dealing with 

shipper/receiver differences and 

subsequent account corrections)
N-94 (11-2020)

iv) Physical inventory 

Frequency, procedures, estimated 

distribution of nuclear material, 

methods of operator's inventory taking 

(both for item and/or bulk accountancy, 

including relevant assay methods), 

accessibility and possible verification 

method for irradiated nuclear material, 

expected accuracy, access to nuclear 

material

NUCLEAR MATERIAL ACCOUNTANCY AND CONTROL

v) Operational records and accounting 

records 

(including method of adjustment or 

correction and place of preservation 

and language)

28. Features related to containment 

and surveillance measures 

(general description of applied or 

possible measures)

29. For each measurement point of 

accountability areas, identified 

under QS. 18, Give the following 

(If applicable) 

For each measurement point fill in 

separate sheet. 

Number of measurement points: 1 

i) Description of location, type, 

identification 

SPECIMEN FORMS USED IN ALL PROCEDURES ATTACHED UNDER REF. NO.

ii) Anticipated types of inventory 

change and possibilities to use this 

measurement point for physical 

inventory taking

iv) Nuclear material containers, 

packaging

v) Sampling procedure and equipment 

used

vi) Measurement method(s) and 

equipment used

vii) Source and level of random and 

systematic errors 

(weight, volume, sampling, NDA) 

viii) Technique and frequency of 

calibration of equipment used

iii) Physical and chemical form of 

nuclear material 

(with cladding materials description)

ix) Method of converting source data 

to batch data
N-94 (11-2020)

NUCLEAR MATERIAL ACCOUNTANCY AND CONTROL

x) Means of batch identification

xi) Anticipated batch flow rate per year

xii) Anticipated number of inventory 

batches

xiii) Anticipated number of items per 

flow and inventory batches

xiv) Type, composition and quantity of 

nuclear material per batch 

(with indication of batch data, total 

weight of each element of nuclear 

material, and the isotopic composition 

(for uranium) and Pu content, when 

appropriate; form of nuclear material) 

xv) Features related to containmentsurveillance measures

POST-OPERATION INFORMATION

PLAN(s) ATTACHED UNDER REF. NOs 

31. Facility decommissioning 

plan 

i) Key events of the decommissioning 

plan

iii) Removing or rendering inoperable 

of essential equipment

OPTIONAL INFORMATION

Date (MM/DD/YYYY)

32. Optional information 

(that the operator considers relevant to 

safeguarding the facility)

30. Decommissioning schedule 

dates 

End of operations (MM/DD/YYYY) Decommissioned (MM/DD/YYYY)

ii) Removal and recovery of 

nuclear material

Signature of Responsible Officer