OMB Control Number: 2040-0281 Plant ID: Insert Plant ID

Approval Expires: 05/31/2013 Plant Name: Insert Plant Name

Section Title Tab Name

Part E Instructions

Part E Section 1

Generating Unit Cleaning Data Part E Section 2

Cleaning Operation Data Part E Section 3

Part E Comments Part E Comments

Metal Cleaning Operations

Steam Electric Questionnaire 

PART E - WASTES FROM CLEANING METAL PROCESS EQUIPMENT

Table of Contents

Part E Instructions

Approved: May 20, 2010
Steam Electric Questionnaire Part E. Instructions

Plant ID: Insert Plant ID

Plant Name: Insert Plant Name

PART E. WASTES FROM CLEANING METAL PROCESS EQUIPMENT

Use the Comments page at the end of Part E to do the following: provide additional 

information as requested in certain questions within Part E; indicate atypical data (e.g., if 

2009 information is not representative of normal operations); and note methods used to 

make best engineering estimates in the event that exact data are not available.

INSTRUCTIONS

Complete Part E of the questionnaire for your plant. As you are completing the 

electronic form, note the following: When you enter your plant name and plant ID on the 

Part E TOC tab, all name and ID fields throughout Part E will automatically populate. 

Refer to the overall questionnaire instructions, the glossary, and the acronym list for 

assistance with completing Part E. 

Please provide all free response answers in the highlighted yellow areas. Throughout 

Part E, you may need to make copies of certain sections/questions. Instructions are 

provided throughout Part E regarding making copies. Note that steam electric 

generating unit or metal cleaning operation names must be populated on the copied tab 

or section, located in the upper right corner under "Plant ID" and "Plant Name", in order 

to correlate the requested information with the steam electric generating unit or metal 

cleaning operation.

Approved: May 20, 2010
Steam Electric Questionnaire Part E. Wastes from Cleaning Metal Process Equipment

Plant Name: Insert Plant ID

Plant ID: Insert Plant Name

Part: E

Section Title:

 Instructions:

CBI? E1-1.

(Continue)

(Skip to next Questionnaire Part)

1. Metal Cleaning Operations

Complete Part E of the questionnaire for your plant. This part collects information on operations that produce metal cleaning 

wastes at the plant. Metal cleaning wastes include any process wastewaters resulting from cleaning [with or without chemical 

cleaning compounds] any metal process equipment, including, but not limited to, boiler tube cleaning, boiler fireside cleaning, 

and air heater cleaning. This part also collects information on combined cycle combustion turbine and air compressor cleaning, 

and soot blowing. For Part E of the questionnaire, report all soot blowing operations that use water or steam during the 

cleaning event. 

Has the plant generated any wastes from cleaning metal process equipment associated with fossil- or nuclear-fueled steam 

Yes electric generating units since January 1, 2000?

Yes

No 

E-1 Approved: May 20, 2010
Steam Electric Questionnaire Part E. Wastes from Cleaning Metal Process Equipment

Plant Name:

Plant ID:

SE Unit ID:

Part: E

Section Title:

Instructions:

CBI? E2-1.

Does Type of 

Cleaning Occur 

at the Plant?

Typical Dose 

Concentration 

for Each 

Chemical 

(Grams per 

Liter)

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify):

2. Generating Unit Cleaning Data

Typical Frequency of 

Cleaning Events (e.g., 1 

time every 3 years)

Table E-1. Metal Process Equipment Cleaning Operations Using Chemicals Performed on Steam Electric Generating Units

In Table E-1, provide information about a typical cleaning event for each type of cleaning operation that uses chemical compounds on metal process equipment associated with fossil- or nuclear-fueled steam electric 

generating units. In addition, please note whether or not each type of cleaning operation occurs at the plant. 

NOTE: “Typical Dose Concentration” refers to the average concentration of the chemical within the cleaning water and "cleaning event" refers to one instance in which the plant performs a cleaning 

operation on metal process equipment.

Complete Section 2 (Questions E2-1 and E2-2) for each fossil- or nuclear-fueled steam electric generating unit for which the plant has performed at least one cleaning operation on metal process equipment since January 1, 

2000. See Part A Section 8 for unit classifications. Enter the steam electric generating unit ID under the section heading above (use steam electric generating unit IDs assigned in Table A-8). Make a copy of Section 2 for 

each steam electric generating unit identified in Table A-8 using the "Copy Section 2" button below. Please provide all free response answers in the highlighted yellow areas.

NOTE: Combined cycle systems are considered steam electric generating units and, therefore, any cleaning operations performed on ANY portion of a combined cycle system, including cleaning operations 

associated with the combustion turbine portion of the system should be reported in this part. When responding to these questions, provide answers that describe the typical cleaning operation for the steam 

electric generating unit.

Type of Metal Cleaning 

Operation ID Operation

Typical 

Amount 

Added for 

Each 

Chemical per 

Cleaning 

Event 

(Gallons)

Type of Water Used in Cleaning 

Operation 

Insert Plant ID

Insert Plant Name

Insert Unit ID

Typical Volume 

of Metal 

Cleaning Waste 

Generated per 

Cleaning Event 

(Gallons)

Chemical Addition

Type of Chemical Used in 

Operation 

Other (specify):

Other (specify):

Other (specify):

yrs

yrs

time(s) 

every

time(s) 

every

FIRE_CHEM Boiler fireside cleaning

Other (specify):

Other (specify):

TUBE_CHEM Boiler tube cleaning

Other (specify):

Copy Section 2

Yes

Yes

No

Yes

No

E-2 Approved: May 20, 2010
Steam Electric Questionnaire Part E. Wastes from Cleaning Metal Process Equipment

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify):

yrs

yrs

SOOT_CHEM Soot blowing

AIR_CHEM Air heater cleaning

yrs

time(s) 

every

time(s) 

every

time(s) 

every

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify):

ST-TURB_CHEM Steam turbine cleaning

Yes

No

Yes

No

Yes

No

E-3 Approved: May 20, 2010
Steam Electric Questionnaire Part E. Wastes from Cleaning Metal Process Equipment

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify): yrs

yrs

time(s) 

every

time(s) 

every

time(s) 

every

yrs

yrs

time(s) 

every

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify):

Other (specify):

CT-COMPR_CHEM Combustion turbine 

cleaning (compressor 

portion of combustion 

turbine)

CT-COMB_CHEM Combustion turbine 

cleaning (combustion 

portion of turbine)

Other Other:

Other Other:

Yes

No

Yes

No

Yes

No

Yes

No

E-4 Approved: May 20, 2010
Steam Electric Questionnaire Part E. Wastes from Cleaning Metal Process Equipment

CBI? E2-2.

Other (specify):

yrs

Other (specify):

Other (specify):

Other (specify):

yrs

Other (specify):

Other (specify):

Other (specify):

yrs

Other (specify):

Other (specify):

Table E-2. Metal Process Equipment Cleaning Operations Without Chemicals 

Performed on Steam Electric Generating Units

Operation ID

Type of Metal Cleaning 

Operation

Type of Water Used in Cleaning 

Operation 

AIR_NO_CHEM Air heater cleaning

TUBE_NO_CHEM Boiler tube cleaning

FIRE_NO_CHEM Boiler fireside cleaning

In Table E-2, provide information about a typical cleaning event for each type of cleaning operation that does not use chemical compounds on metal process equipment associated with fossil- or nuclear- fueled steam 

electric generating units. In addition, please note whether or not each type of cleaning operation occurs at the plant.

NOTE: “Typical Dose Concentration” refers to the average concentration of the chemical within the cleaning water and "cleaning event" refers to one instance in which the plant performs a cleaning 

operation on metal process equipment.

Typical Frequency of Cleaning 

Events (e.g., 1 time every 3 

years)

time(s) 

every

time(s) 

every

time(s) 

every

Typical Volume 

of Metal 

Cleaning Waste 

Generated per 

Cleaning Event 

(Gallons)

Does Type of 

Cleaning Occur 

at the Plant?

Yes

Yes

No

Yes

No

Yes

No

E-5 Approved: May 20, 2010
Steam Electric Questionnaire Part E. Wastes from Cleaning Metal Process Equipment

Other (specify):

yrs

Other (specify):

Other (specify):

Other (specify):

yrs

Other (specify):

Other (specify):

Other (specify):

yrs

Other (specify):

Other (specify):

Other (specify):

yrs

Other (specify):

Other (specify):

Other (specify):

yrs

Other (specify):

Other (specify):

Other (specify):

yrs

Other (specify):

Other (specify):

SOOT_NO_CHEM Soot blowing

Other Other:

ST-TURB_NO_CHEM Steam turbine cleaning

CT-COMB_NO_CHEM Combustion turbine 

cleaning (combustion 

portion of turbine)

CTCOMPR_NO_CHEMCombustion turbine 

cleaning (compressor 

portion of combustion 

turbine)

Other Other:

time(s) 

every

time(s) 

every

time(s) 

every

time(s) 

every

time(s) 

every

time(s) 

every

Yes

No

Yes

No

Yes

No

Yes

No

Yes

No

Yes

No

E-6 Approved: May 20, 2010
Steam Electric Questionnaire Part E. Wastes from Cleaning Metal Process Equipment

Plant Name: Insert Plant ID

Plant ID: Insert Plant Name

SE Unit ID: Insert Unit ID

Insert Operation ID

Part: E

Section Title:

 Instructions:

CBI? E3-1.

Example: The plant uses citric acid to remove copper deposits and iron oxides from the steel tube surfaces of the boiler. The citric 

acid is diluted to a pH of 3.5 and then used for cleaning in a two-stage process. In the first stage, the citric acid dissolves iron oxides. 

In the second stage anhydrous ammonia is added to raise the pH of the cleaning solution between 9 and 10 and air is bubbled 

through the solution to dissolve copper deposits. 

Metal Cleaning Operation ID:

Complete Section 3 (Questions E3-1 through E3-8) for each type of metal cleaning operation performed on the steam electric 

generating unit, which is identified in Tables E-1 and E-2 of Section 2. Make a copy of Section 3 using the "Copy Section 3" button 

below. Enter the steam electric generating unit ID under the section heading above (use steam electric generating unit IDs assigned 

in Table A-8). In addition, enter the metal cleaning operation ID performed on the steam electric generating unit (use the IDs from 

Tables E-1 and E-2). Please provide all free response answers in the highlighted yellow areas.

In the space below, provide a description of the process equipment cleaning operation. Include the type of equipment and metal 

cleaned, any chemical preparation steps (e.g., diluting the chemical prior to use), and a short description of the cleaning operation. An 

example is provided below. 

3. Cleaning Operation Data

Yes

Copy Section 3

E-7 Approved: May 20, 2010
Steam Electric Questionnaire Part E. Wastes from Cleaning Metal Process Equipment

CBI? E3-2.

CBI? E3-3.

CBI? E3-4.

 (Continue)

Are residues or other solid by-products generated from the cleaning operation?

 (Skip to next Questionnaire Part)

Is the cleaning waste commingled with other process wastewaters ? If yes, indicate the process wastewaters with which the metal 

cleaning waste is commingled. [Check all boxes that apply.]

What is the destination(s) of the cleaning waste? If the plant recycles the waste, indicate the plant process to which this waste is 

recycled. [Check all boxes that apply.]

Yes

Yes

Yes

Fly ash transport water

Bottom ash transport water

FGD scrubber purge

Cooling tower blowdown

Once through cooling water

Other:

Chemical precipitation

Constructed wetlands

pH adjustment Other, specify: 

Immediately recycled back to plant process. Please describe how the cleaning waste is reused:

Transferred to on-site treatment system. Identify the type of treatment system below. [Check all boxes that apply.]

Discharged to surface water. Provide NPDES permitted outfall number (from Part A Section 2.2): 

Indirect discharge to a publicly or privately owned treatment works

Other, explain: 

Yes

No

Evaporated during a cleaning operation

Yes

No

Settling Pond

E-8 Approved: May 20, 2010
Steam Electric Questionnaire Part E. Wastes from Cleaning Metal Process Equipment

CBI? E3-5.

CBI? E3-6. Indicate what characteristic(s) make the waste hazardous.

CBI? E3-7. 

tons per cleaning event

If residues are generated, indicate if they are considered always hazardous, sometimes hazardous, or non-hazardous waste. 

tons per cleaning event

tons per cleaning event

tons per cleaning event

Indicate how the plant handles the residue or other solid by-products and provide the tons per cleaning event for each type of storage 

handling technique. If the solid by-products are stored in a landfill or pond/impoundment , indicate whether the solid by-products are 

stored permanently or temporarily. [Check all boxes that apply.]

(Skip to Question E3-7)

tons per cleaning event

tons per cleaning event

(Continue)

(Continue)

(Skip to Question E3-7)

Yes

Yes

Yes

Landfilled

Stored permanently

Stored temporarily (later hauled off-site)

Sent to a pond/impoundment

Stored permanently

Stored temporarily (later hauled off-site)

Hauled off-site for disposal

Other (specify):

Always hazardous

Unknown

Always non-hazardous

Sometimes hazardous

E-9 Approved: May 20, 2010
Steam Electric Questionnaire Part E. Wastes from Cleaning Metal Process Equipment

CBI? E3-8. If the plant stores the residues or other solid by-products from cleaning operations in a landfill or pond/impoundment, are they 

combined with other solid by-products generated at the plant? If yes, indicate which. [Check all boxes that apply.]

Fly ash

Bottom ash

FGD solids

Mill rejects

Other:

Yes

Yes

No (residues/solid by-products transferred to landfill but not combined with other wastes)

NA (residues/solid by-products not transferred to landfill or pond/impoundment)

E-10 Approved: May 20, 2010
Steam Electric Questionnaire Part E. Wastes from Cleaning Metal Process Equipment

Plant ID: Insert Plant ID

Plant Name: Insert Plant Name

Part: E

Section Title: Part E Comments

Instructions:

Question 

Number

CBI?

CBI?

CBI?

CBI?

CBI?

CBI?

CBI?

CBI?

CBI?

CBI?

CBI?

Comment

Cross reference your comments by question number and indicate the confidential status of your comment by checking the box 

next to “Yes” under "CBI?" (Confidential Business Information). 

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

E-11 Approved: May 20, 2010
Steam Electric Questionnaire Part E. Wastes from Cleaning Metal Process Equipment

CBI?

CBI?

CBI?

CBI?

CBI?

CBI?

CBI?

CBI?

CBI?

CBI?

CBI?

CBI?

CBI?

CBI?

CBI?

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

E-12 Approved: May 20, 2010