MDTL Acid Mixing Checklist

Etching identifier number: \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

Description of samples to be etched:

⁯An acid work zone has been designated.

⁯The 'HF Use in Progress' lighted sign and the audible alarm system are
activated.

⁯Other laboratory workers in the area have been informed that
hydrofluoric acid will be used and they have been warned not to enter
36a Neuqua.

⁯Personnel that will work within the acid work zone have been identified
and their training has been verified. (List personnel and training dates
below. Note: a print-out from TRAIN is also sufficient.)

+-----------------+----------+----------+------+---------+-----------+
| Name            | HF First | Chem.    | Ha   | HF      | Acid      |
|                 | Aid      | Hyg.     | zCom | Safety  | Mixing    |
|                 |          |          |      |         |           |
|                 | TD-0000  | TD505    | FN00 | FN00    | TD000     |
|                 | 03-CR-01 | 101-MDTL | 0156 | 0404/CR | 011-01-CR |
+-----------------+----------+----------+------+---------+-----------+
|                 |          |          |      |         |           |
+-----------------+----------+----------+------+---------+-----------+
|                 |          |          |      |         |           |
+-----------------+----------+----------+------+---------+-----------+
|                 |          |          |      |         |           |
+-----------------+----------+----------+------+---------+-----------+
|                 |          |          |      |         |           |
+-----------------+----------+----------+------+---------+-----------+

⁯A Work Authorization Form has been approved for this operation.

⁯A third person identified to monitor personnel working within acid work
zone and to provide assistance to acid workers. (i.e.: phone calls,
retrieve extra equipment, etc.). (List individual below.)

> Name:

⁯The eyewash has been tested and is working properly. DO NOT TEST THE
SAFETY SHOWER!

⁯The portable and stationary HF acid detectors have been checked and are
working.

⁯The hood exhaust and hood light have been checked and are working
properly.

⁯The location of the HF antidote, calcium gluconate, is known and the
expiration date has been checked and found to be in date.

⁯The location of the HF rated gel sorbent powder, sorbent pads, pillows,
and chemical sorbent dikes used in case of an acid spill have been
identified.

⁯All safety signs in the hood area have been reviewed.

⁯The emergency response plan has been reviewed and each individual's
response discussed.

⁯The equipment and any additional engineering controls needed for acid
mixing have been collected (list below):

⁯The HF acid worker PPE listed below has been inspected for any
mechanical, chemical, and physical damage and donned before entering the
acid work zone:

-   Chemical goggles

-   Face shield with crown protector

-   Neoprene gloves (minimum 15mil)

-   Disposable nitrile gloves (worn inside neoprene gloves)

-   Acid resistant boots, minimum height 14 inches

-   Tyvek/Saranex coveralls worn over the cuff of the gloves and over
    the top of the boots.

⁯The acids are retrieved from their locked storage cabinet and
transported to the hood area using acid carriers.

For BCP: the acids are hydrofluoric, nitric, and phosphoric.

For EP: the acids are hydrofluoric and sulfuric.

⁯The hood is setup for the acid mixing and the process can start.

⁯The mixture of thoroughly mixed acids has been placed in Nalgene jugs,
labeled respectively with: "BCP" or "EP" and stored in an acid carrier
for future use. The acid container must be stored in one of the
ventilated and locked areas. The cap has been tightly secured.

⁯At the completion of the acid mixing, all lab ware rinsed with basic
water and then cleaned using normal laboratory cleaning procedures.

⁯Unused acids returned to their respective locked storage using acid
carriers and the bottles cap have been completely tightened.

⁯The 'HF Use in Progress' lighted sign and the audible alarm system are
deactivated.

Signature(s) of individual(s) participating:

ID Number: \_\_\_\_\_\_\_\_\_ Date: \_\_\_\_\_\_\_\_\_\_\_\_

ID Number: \_\_\_\_\_\_\_\_\_ Date: \_\_\_\_\_\_\_\_\_\_\_\_

ID Number: \_\_\_\_\_\_\_\_\_ Date: \_\_\_\_\_\_\_\_\_\_\_\_

ID Number: \_\_\_\_\_\_\_\_\_ Date: \_\_\_\_\_\_\_\_\_\_\_\_