Hydrogen Sulfide - PEC Safety | Contractor Management · PPT-SM-H 2 S 2017 Hydrogen sulfide (H 2 S)...
Transcript of Hydrogen Sulfide - PEC Safety | Contractor Management · PPT-SM-H 2 S 2017 Hydrogen sulfide (H 2 S)...
Hydrogen Sulfide
PPT-SM-H2S 2017
Hydrogen sulfide (H2S) is an invisible hazard that can be released and produced during industry processes, such as drilling.
H2S can also develop naturally in oxygen deficient environments, such as bogs,
swamps, polluted water, and manure pits.
2
PPT-SM-H2S 2017 3
H2S can collect in: Low-lying areas Any enclosed facility or piping that contains
H2S or H2S-contaminated fluids Pits Tanks Vacuum trucks Confined spaces
PPT-SM-H2S 2017 4
At high concentrations, H2S can kill in a single breath.
PPT-SM-H2S 2017
Multiple agencies provide guidelines to help workers avoid H2S exposure, including the American National Standards Institute (ANSI).
ANSI recently updated its Z-390 standard for Accepted Practices for Hydrogen Sulfide
Safety Training Programs.
5
PPT-SM-H2S 2017 6
The 2006 version of the ANSI Z-390 standard was revised to address:
References to obsolete technologyNon-flexible presentation formatRequired presentation of material that wasn’t pertinent to most workersStructure of documentVisitor trainingRefresher trainingThreshold limit value –time-weighted average (TLV-TWA)
PPT-SM-H2S 2017
The updated 2017 version of the ANSI Z-390 standard now:
7
References updated technologyHas flexible structure open to partial remote instructionStates that students must be presented with relevant information to ensure their safetyHas an improved structureStates that visitors must receive full worker training programRequires refresher training annually with full course presentation
Includes the updated American Conference of Governmental Industrial Hygienists (ACGIH) TLV-TWA
PPT-SM-H2S 2017
Companies must use engineering and administrative controls to protect workers from H2S exposure and provide workers with training appropriate to their potential level of exposure to H2S.
8
PPT-SM-H2S 2017 9
Some examples of what training should cover include:Wind direction awareness and routes of
egressWhat to do in an emergency Participating in drills
PPT-SM-H2S 2017 10
H2S goes by many names, including The Silent Killer, rotten egg gas, swamp gas, and sour gas.
Characteristics of H2S include: Highly toxic, colorless gas Extremely flammable, may ignite at high
temperatures Extremely explosive, containers of H2S may
explode if exposed to fire or handled carelessly
PPT-SM-H2S 2017
You can only smell low concentrations of H2S.
At high concentrations, H2S impairs and eventually wipes out your sense of smell. Do not use your nose to detect H2S.
11
PPT-SM-H2S 2017 12
You can be exposed to H2S through: InhalationSkin contact
Inhalation is your main concern.
PPT-SM-H2S 2017 13
Symptoms of H2S exposure include:
Acute Toxicity Chronic Toxicity• Loss of sense of smell• Excitement or giddiness• Eye irritation• Coughing and sneezing• Headaches• Nausea• Respiratory tract irritation• Diarrhea
• Eye irritation • Corneal blistering, pitting, and
opacity• Headaches• Nausea• Respiratory tract irritation• Pulmonary edema• Loss of appetite • Sleep disturbances
PPT-SM-H2S 2017 14
The industry accepted exposure level for H2S is 10 ppm: Check with your company for its accepted
exposure level
PPT-SM-H2S 2017 15
If the H2S concentration may exceed 10 ppm, you need to wear a personal monitor: Position the monitor as close to your mouth
and nose as possible to measure air from the breathing zone
If your monitor goes off, leave the area immediately
PPT-SM-H2S 2017 16
Wind conditions tell you which way H2S will spread: Check the windsock or streamer regularly
and any time you are unsure which way the wind is blowing
Stay on the upwind sideMake sure you are not downwind of an H2S
source Always move crosswind and then
upwind to get away from an H2S source
PPT-SM-H2S 2017 v2 17
ANSI and the American Petroleum Institute (API) recommend wearing one of the following respiratorswhen you work in environments with more than 10 ppm H2S: Positive-pressure full-facepiece hoseline/airline
supplied-air respirator (SAR) and carry an escape pack
Positive-pressure self-contained breathing apparatus (SCBA)
PPT-SM-H2S 2017
H2S is a deadly hazard that can kill you in a single breath. Know your role in your company’s H2S contingency plan and participate in drills.
18
PPT-SM-H2S 2017 19
Do not rely on your sense of smell to detect the presence of H2S.
Always wear a personal monitor when working in potential H2S environments. If your monitor goes off, leave the area immediately.
Copyright © 2016 by PEC/Premier Safety Operations, LLC
Safe
ty M
eetin
g Quiz
: Hyd
roge
n Su
lfide
Sign and date this quiz sheet. Circle the letter representing the correct answer to each quiz question below.
Name:©
201
7 PE
C S
afet
y, In
c.
QUIZ-SM-Hydrogen SUlfIdeJUne 2017
Date:
1. ______________ can develop naturally in oxygen deficient environments, such as bogs, swamps, polluted water, and manure pits.
A. BenzeneB. Hydrogen sulfideC. AsbestosD. Silica
2. H2S can _______________ in low-lying areas.
A. CollectB. DisperseC. DissolveD. Not collect
3. At high concentrations, H2S can kill _______________.
A. In a single breathB. Very slowlyC. Over a period of daysD. Years after exposure
4. _______________ recently updated its Z-390 standard for Accepted Practices for Hydrogen Sulfide Safety Training Programs.
A. OSHAB. NIOSHC. BSEED. ANSI
5. _______________ use your nose to detect H
2S.A. AlwaysB. Do notC. SometimesD. Regularly
6. For exposure to H2S, ________________ is your main concern.
A. Skin contactB. InhalationC. AbsorptionD. Injection
7. The industry accepted exposure level for H2S is ________________.
A. 50 ppmB. 100 ppmC. 25 ppmD. 10 ppm
8. If the H2S concentration may exceed 10 ppm, you need to wear _______________.
A. A hard hatB. A personal monitorC. Safety glassesD. Hearing protection
9. If your monitor goes off, ________________.
A. Ignore itB. Investigate to find out whyC. Leave the area
immediatelyD. Call your supervisor
10. ________________ tell you which way H2S will spread.
A. Wind conditionsB. Your sensesC. Your coworkersD. Warning signs
Hydr
ogen
Sulfi
de
Safety Meeting Answer Keys: Hydrogen Sulfide Instructors: The following key shows the answers for the Hydrogen Sulfide safety meeting quiz.
© 2017 PEC
Safety, Inc.
Key-SM-Hydrogen SUlfIdeJUne 2017
1. B
2. A
3. A
4. D
5. B
6. B
7. D
8. B
9. C
10. A
This is to certify that
has successfully completed thePEC Safety Meeting
Hydrogen Sulfide
Instructor Date Awarded
STUDENT ROSTER
PRINT STUDENT NAME (CLEARLY) STUDENT SIGNATURE LAST 4 SSN or DOB1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
INSTRUCTOR NAME SAFETY MEETING DATE
SAFETY MEETING NAME COMPANY NAME
Student Instructions: Print and sign your name. Also, provide your date of birth or the last four digits of your social security number.
©2014 PEC Safety, Inc. All rights reserved.