Notes for the personnel associated with the mirror washing procedure during re-coating work

すばるの鏡の蒸着時に，洗浄工程に従事する可能性のある職員あての資料

(SSH, 11-27-00)

Appendix C to Sec. 1910.134: OSHA Respirator Medical Evaluation Questionnaire (Mandatory)

レスピレータ着用者のための，OSHAの規定による新しい問診票

11. Check the type of respirator you will use（使用するレスピレータの種類）:

a. ______ N, R, or P disposable respirator (filter-mask, non- cartridge type only).（使い捨ての簡易型）

b. ______ Other type (for example, half- or full-facepiece type, powered-air purifying, supplied-air, self-contained breathing apparatus).（フィルターや給気機構などの付いた重装備）

主鏡洗浄作業に従事する場合は，bタイプを使います．光学実験などで使うガーゼ・マスクやホコリよけマスクはaタイプです． Staffs involved in the primary mirror washing procedure will use full-facepiece respirator. Type a respirators are used commonly when handling optics or instruments.

Part B Any of the following questions, and other questions not listed, may be added to the questionnaire at the discretion of the health care professional who will review the questionnaire.

1. In your present job, are you working at high altitudes (over 5,000 feet (=1524 m)) or in a place that has lower than normal amounts of oxygen（高山など酸素濃度の低いところでの作業か）: Yes/No

すばる望遠鏡での作業は，これに該当します．Subaru site is 13796 feet altitude.

3. Have you ever worked with any of the materials, or under any of the conditions, listed below:

（下記の物質を取り扱ったか）

a. Asbestos（石綿）: Yes/No

b. Silica (e.g., in sandblasting)（ケイ土）: Yes/No

c. Tungsten/cobalt (e.g., grinding or welding this material)（タングステン，コバルト）: Yes/No

すばるの鏡の蒸着には，タングステン・フィラメントを使用しますが，その加工をするわけではないので，該当しない．We do use tungsten filaments for mirror coating, but we do not grind or weld them.

d. Beryllium（ベリリウム）: Yes/No

e. Aluminum（アルミニウム）: Yes/No

アルミニウムも蒸着に用いるが，人によってはその加工に従事することがあるのでご注意下さい．Aluminum is used for mirror coating, and some staffs do work on them.

f. Coal (for example, mining)（石炭）: Yes/No

g. Iron（鉄）: Yes/No

h. Tin（ブリキ）: Yes/No

i. Dusty environments（ほこりっぽい環境）: Yes/No

j. Any other hazardous exposures（その他の危険度の高い環境）: Yes/No

10. Will you be using any of the following items with your respirator(s)?

（下記の物をレスピレータとともに使用するか）

a. HEPA Filters(HEPAフィルター): Yes/No

b. Canisters (for example, gas masks)（ガスマスクなど用のフィルター内蔵キャニスター）: Yes/No

c. Cartridges（フィルター内蔵カートリッジ）: Yes/No

すばるの主鏡洗浄作業時に装着するfull-facepiece respiratorには，酸および有機溶剤対応のフィルターを内蔵したカートリッジを付ける．During the mirror washing, the full-facepiece respirators will be equipped with cartridges for acid and solvent fumes.

12. During the period you are using the respirator(s), is your work effort:

（レスピレータ使用時の労働負荷）

b. Moderate (200 to 350 kcal per hour)（中程度の作業）: Yes/No

Examples of moderate work effort are sitting while nailing or filing; driving a truck or bus in urban traffic; standing while drilling, nailing, performing assembly work, or transferring a moderate load (about 35 lbs. (= 15.9 kg)) at trunk level; walking on a level surface about 2 mph or down a 5-degree grade about 3 mph; or pushing a wheelbarrow with a heavy load (about 100 lbs. (= 45.4 kg)) on a level surface.

すばるの主鏡洗浄作業時には，機械による洗浄の残りを手作業で行う．すなわち鏡面をこする作業がある．また薬液の混合，注入，容器の洗浄その他の作業がある．ここでいう中程度の負荷に該当．Some manual work is required during the primary mirror washing, such as scrubbing the residuals from the side of the mirror. Probably the moderate load.

13. Will you be wearing protective clothing and/or equipment (other than the respirator) when you're using your respirator（レスピレータ使用時に他の安全装備を装着するか）: Yes/No

クリーン作業用つなぎ，フード，耐薬品手袋，長靴；薬品混合担当者はさらに耐薬品エプロン，袖抜き．Coverall, hood, rubber boots, acid-resistant gloves, sleeves and apron for persons mixing chemicals

16. Describe the work you'll be doing while you're using your respirator(s)（作業内容）:

主鏡洗浄作業時

アルミ剥離の手作業，薬品混合と薬液タンクへの注入，アルコールの供給，拭き取りなど

For mirror washing

Prepare chemical mixtures, provide chemicals onto the large glass mirror, scrub residuals from the mirror, wipe the mirror etc.

18. Provide the following information, if you know it, for each toxic substance that you'll be exposed to when you're using your respirator(s)（取り扱い物質について）:

Name of the first toxic substance: hydrochloric acid(塩酸)

Estimated maximum exposure level per shift: __________________________________

Duration of exposure per shift: ______________________________________________

Name of the second toxic substance: ethyl alcohol(エチルアルコール)

Estimated maximum exposure level per shift: __________________________________

Duration of exposure per shift: ______________________________________________

Name of the third toxic substance: perchloric acid mixture for silver/chromium coating (to be handled by only specified personnel)　特定のスタッフだけ　過塩素酸混合物

Estimated maximum exposure level per shift: __________________________________

Duration of exposure per shift: ______________________________________________

The name of any other toxic substances that you'll be exposed to while using your respirator:

_____________________________________________________________________________