TITLE:	ES&H Manual
DOCUMENT ID:	3210 Appendix T3 Risk Code Assignment

1.0 Purpose

Identification of work hazards and understanding their risks is an essential part of Jefferson Lab’s work process as defined in ES&H Manual Chapter 3210 Appendix T1 Work Planning, Control, and Authorization Procedure. The purpose of this document is to demonstrate the accepted method for determining the Risk Code for task steps identified while completing ES&H Manual Chapter 3210 Appendix T2 Task Hazard Analysis (THA) Worksheet.

2.0 Scope

This appendix describes the procedure for determining the Risk Code for a task as defined by Jefferson Lab.

3.0 Responsibilities

3.1 Document Author

· Uses due diligence in the recognition of task steps and possible consequences.

· Solicits the advice of ES&H professionals and Subject Matter Experts to mitigate and reduce hazards.

4.0 Process Steps

4.1 Determining Risk Codes

Identify hazards associated with each task step. A list of recognized hazard issues relevant to Jefferson Lab activities is listed in ES&H Manual Chapter 2410 Appendix T1 Hazard Issues List

4.1.1 Consequence Level

Using Table 1 (below) to determine the consequence of an incident/accident for each task step. For example:

· Injury or death?

· Environmental contamination?

· Disruption to facility operation?

· Significant property loss?

4.1.1.1 Assign the appropriate Consequence Level to each task step

Table 1: Consequence Levels

Consequence Level	Severity	Property Loss
High (H)	Serious impact on-site and off-site. May cause deaths or loss of facility operation. Major impact on the environment	> $100,000
Medium (M)	Major impact on and/or minor impact off-site. May cause death, severe injury, severe occupational illness to personnel, major damage to the facility operation, or minor impact on the environment.	> $50,000
Low (L)	Minor impact on-site with no off-site impact. May cause minor injury, minor occupational illness, or minor impact on the environment.	> $500
Extremely Low (EL)	Will not result in a significant injury, occupational illness, or provide a significant impact on the environment	< $500

4.1.2 Probability Level

Using Table 2 (below) determine how often the incident/accident(s) is likely to occur.

4.1.2.1 Assign the appropriate probability level to each task step.

Table 2: Probability of Accident

Probability Level	Description*	Estimated Probability of Accident Occurrence per Year
High (H)	An accident is likely to occur several times during task.	> 10^–1
Medium (M)	An accident may occur during the task.	10^–2 to 10^–1
Low (L)	Probability of an accident occurring is unlikely to happen during the task.	10^–4 to 10^–2
Extremely Low (EL)	Probability of an accident occurring is extremely unlikely to happen during the task.	10^–6 to 10^–4
* Assuming a person performed the task 2000 hours per year.

4.2 Determine the Risk Code

Risks associated with an activity are determined by the consequence of an incident/accident and the probability of its occurrence. These two parameters together determine the Risk Code rating used at Jefferson Lab. Use Table 3 (below) to assign a Risk Code value to each task step.

If there are multiple potential bad outcomes associated with a task, the Risk Code value representing the highest risk outcome is assigned to the task. If you are uncertain what Risk Code value to assign, assign the higher value.

Table 3: Risk Code Assignment

Consequence Level	H	1			3		4		4
	M	1			2		3		4
	L	N*			1		2		3
	EL	N*			N*		1		1
		EL		L		M		H
		Probability Level (Estimated likelihood per full-time active person)
			*Negligible Risk

Operations with an internal Risk Code of 3 or 4 require a formal safety work control document per ES&H Manual Chapter 3310 Operational Safety Procedure Program

Table 4: Risk Codes and Task Review Requirements

Risk Code assigned based on hardware and procedures already in place		Level of Task Review required before new work can begin
4	High	Formal written and approved procedures in the form of an OSP, or temporary work permit. Division ESH&Q Officer may require additional approvals. Generally requires Laboratory Director Approval.
3	Medium	Formal written and approved procedures in the form of an OSP, or temporary work permit
2	Low	None Workers and supervisors should explicitly review the hazards and mitigating measures.
1	Extremely Low	None This level of risk is common for appropriately trained personnel.
N	Negligible	None This level of risk is common, and the relevant measures are addressed as part of general education of the public.

ISSUING AUTHORITY	APPENDIX AUTHOR	APPROVAL DATE	EFFECTIVE DATE	EXPIRATION DATE	REV.
ESH&Q Division	Harry Fanning	10/05/09	01/01/10	10/05/12	0

This document is controlled as an on line file. It may be printed but the print copy is not a controlled document. It is the user’s responsibility to ensure that the document is the same revision as the current on line file. This copy was printed on 10/13/2009.